ISL22323UFV14Z [RENESAS]
Dual Digitally Controlled Potentiometer (XDCP™), Low Noise, Low Power, I2C® Bus, 256 Taps; QFN16, TSSOP14; Temp Range: -40° to 125°C;型号: | ISL22323UFV14Z |
厂家: | RENESAS TECHNOLOGY CORP |
描述: | Dual Digitally Controlled Potentiometer (XDCP™), Low Noise, Low Power, I2C® Bus, 256 Taps; QFN16, TSSOP14; Temp Range: -40° to 125°C 光电二极管 转换器 电阻器 |
文件: | 总19页 (文件大小:1145K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
NOT RECOMMENDED FOR NEW DESIGNS
NO RECOMMENDED REPLACEMENT
contact our Technical Support Center at
1-888-INTERSIL or www.intersil.com/tsc
DATASHEET
ISL22323
Dual Digitally Controlled Potentiometer (XDCP)
Low Noise, Low Power, I C Bus, 256 Taps
FN6422
Rev.2.00
Aug 17, 2015
2
The ISL22323 integrates two digitally controlled
potentiometers (DCP), control logic and non-volatile memory
on a monolithic CMOS integrated circuit.
Features
• Two potentiometers in one package
• 256 resistor taps
The digitally controlled potentiometer is implemented with a
combination of resistor elements and CMOS switches. The
position of the wipers are controlled by the user through the
2
• I C serial interface
- Three address pins, up to eight devices per bus
• Non-volatile EEPROM storage of wiper position
• 13 General Purpose non-volatile registers
2
I C bus interface. The potentiometer has an associated
volatile Wiper Register (WRi) and a non-volatile Initial Value
Register (IVRi) that can be directly written to and read by the
user. The contents of the WRi control the position of the
corresponding wiper. At power up the device recalls the
contents of the DCP’s IVRi to the correspondent WRi.
• High reliability
- Endurance: 1,000,000 data changes per bit per register
- Register data retention: 50 years @ T +55°C
The ISL22323 also has 13 general purpose non-volatile
registers that can be used as storage of lookup table for
multiple wiper position or any other valuable information.
• Wiper resistance: 70 typical @ 1mA
• Standby current <4µA max
• Shut-down current <4µA max
• Dual power supply
The ISL22323 features a dual supply, that is beneficial for
applications requiring a bipolar range for DCP terminals
between V- and VCC.
- V
CC
= 2.25V to 5.5V
- V- = -2.25V to -5.5V
Each DCP can be used as three-terminal potentiometers or
as two-terminal variable resistors in a wide variety of
applications including control, parameter adjustments, and
signal processing.
• 10k 50kor 100k total resistance
• Extended industrial temperature range: -40 to +125°C
• 14 Ld TSSOP or 16 Ld QFN
• Pb-free (RoHS compliant)
Block Diagram
RH0
RH1
V-
VCC
SCL
SDA
POWER UP
INTERFACE
CONTROL
AND
,
2
I C
A2
A1
WR0
WR1
INTERFACE
VOLATILE
REGISTER
AND
WIPER
CONTROL
CIRCUITRY
VOLATILE
REGISTER
AND
WIPER
CONTROL
CIRCUITRY
STATUS
LOGIC
A0
NON-VOLATILE
REGISTERS
RW0
RL0
RW1
RL1
GND
FN6422 Rev.2.00
Aug 17, 2015
Page 1 of 19
ISL22323
Ordering Information
RESISTANCE
OPTION
(k)
TEMPERATURE
RANGE
PART NUMBER
PACKAGE
(RoHS Compliant)
(Notes 1, 2)
ISL22323TFV14Z
ISL22323TFR16Z
PART MARKING
(°C)
PKG. DWG. #
M14.173
22323 TFVZ
223 23TFRZ
22323 UFVZ
100
100
50
-40 to +125
-40 to +125
-40 to +125
14 Ld TSSOP
16 Ld QFN
L16.4x4A
M14.173
ISL22323UFV14Z
(No longer available,
recommended
14 Ld TSSOP
replacement:
ISL22323TFV14Z-TK)
ISL22323UFR16Z
(No longer available,
recommended
replacement:
ISL22323TFV14Z-TK)
223 23UFRZ
22323 WFVZ
223 23WFRZ
50
10
10
-40 to +125
-40 to +125
-40 to +125
16 Ld QFN
14 Ld TSSOP
16 Ld QFN
L16.4x4A
M14.173
L16.4x4A
ISL22323WFV14Z
(No longer available,
recommended
replacement:
ISL22323TFV14Z-TK)
ISL22323WFR16Z
(No longer available,
recommended
replacement:
ISL22323TFV14Z-TK)
NOTES:
1. These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte
tin plate PLUS ANNEAL - e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations.
Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J
STD-020.
2. Add “-TK” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
Pinouts
ISL22323
(14 LD TSSOP)
TOP VIEW
ISL22323
(16 LD QFN)
TOP VIEW
RH0
RL0
RW0
RH1
RL1
RW1
A2
1
2
3
4
5
6
7
14
VCC
A0
16 15 14 13
13
12
11
10
9
1
2
3
4
12
11
10
9
A1
A2
NC
NC
V-
RL0
RH0
VCC
GND
SCL
SDA
V-
A0
8
5
6
7
8
FN6422 Rev.2.00
Aug 17, 2015
Page 2 of 19
ISL22323
Pin Descriptions
TSSOP PIN
QFN PIN
SYMBOL
RH0
RL0
RW0
RH1
RL1
RW1
A2
DESCRIPTION
1
2
11
12
13
14
15
16
1
“High” terminal of DCP0
“Low” terminal of DCP0
“Wiper” terminal of DCP0
“High” terminal of DCP1
“Low” terminal of DCP1
“Wiper” terminal of DCP1
3
4
5
6
2
7
Device address input for the I C interface
8
4
V-
Negative power supply pin
2
9
5
SDA
SCL
GND
A1
Open drain Serial data I/O for the I C interface
2
10
11
12
13
14
6
I C interface clock input
7
Device ground pin
2
8
Device address input for the I C interface
2
9
A0
Device address input for the I C interface
10
2, 3
EPAD*
VCC
NC
Positive power supply pin
No connection
Exposed Die Pad internally connected to V-
NOTE: *PCB thermal land for QFN EPAD should be connected to V- plane or left floating. For more information refer to
http://www.intersil.com/data/tb/TB389.pdf
FN6422 Rev.2.00
Aug 17, 2015
Page 3 of 19
ISL22323
Absolute Maximum Ratings
Thermal Information
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Voltage at any Digital Interface Pin
Thermal Resistance (Typical, Note 3)
(°C/W)
(°C/W)
JC
JA
14 Lead TSSOP. . . . . . . . . . . . . . . . . .
16 Lead QFN (Note 4) . . . . . . . . . . . . .
Maximum Junction Temperature (Plastic Package) . . . . . . . +150°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
105
39
N/A
3.0
with Respect to GND . . . . . . . . . . . . . . . . . . . . . -0.3V to V +0.3
CC
V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to +6V
CC
V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -6V to 0.3V
Voltage at any DCP Pin with
respect to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V- to V
CC
(10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±6mA
I
W
Recommended Operating Conditions
Latchup . . . . . . . . . . . . . . . . . . . . . . . . . Class II, Level A at +125°C
Temperature Range (Full Industrial) . . . . . . . . . . . .-40°C to +125°C
Power Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15mW
ESD
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5kV
Machine Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .350V
V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.25V to 5.5V
CC
V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-2.25V to -5.5V
Max Wiper Current Iw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±3.0mA
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
NOTE:
3. is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
JA
4. For , the “case temp” location is the center of the exposed metal pad on the package underside.
JC
Analog Specifications Over recommended operating conditions unless otherwise stated.
MIN
TYP
MAX
SYMBOL
PARAMETER
RHi to RLi Resistance
TEST CONDITIONS
(Note 21) (Note 5) (Note 21)
UNIT
k
R
W option
U option
T option
10
50
TOTAL
k
100
k
RHi to RLi Resistance Tolerance
-20
V-
+20
%
End-to-End Temperature Coefficient
W option
±85
±45
ppm/°C
ppm/°C
V
U, T option
V
, V
RHi RLi
DCP Terminal Voltage
Wiper Resistance
V
and V to GND
RL
V
RH
CC
R
RH - floating, V = V-, force Iw current to
RL
the wiper, I = (V
70
10/10/25
0.1
250
W
- V )/R
W
CC RL TOTAL
C /C /C
W
Potentiometer Capacitance
Leakage on DCP Pins
See Macro Model below.
pF
µA
H
L
(Note 19)
I
Voltage at pin from V- to V
1
LkgDCP
CC
VOLTAGE DIVIDER MODE (V- @ RLi; V
@ RHi; measured at RWi, unloaded)
W option
CC
INL
Integral Non-linearity
-1.5
-1.0
-1.0
-0.5
±0.5
±0.2
1.5
1.0
1.0
0.5
LSB
(Note 6)
(Note 10)
Monotonic Over All Tap Positions
U, T option
W option
LSB
(Note 6)
DNL
(Note 9)
Differential Non-linearity
Monotonic Over All Tap Positions
±0.4
LSB
(Note 6)
U, T option
±0.15
LSB
(Note 6)
ZSerror
(Note 7)
Zero-scale Error
W option
0
0
1
0.5
-1
5
2
0
0
2
LSB
(Note 6)
U, T option
W option
FSerror
(Note 8)
Full-scale Error
-5
-2
-2
LSB
(Note 6)
U, T option
-1
V
DCP-to-DCP Matching
Wipers at the same tap position, the same
voltage at all RH terminals and the same
voltage at all RL terminals
LSB
(Note 6)
MATCH
(Note 11, 19)
FN6422 Rev.2.00
Aug 17, 2015
Page 4 of 19
ISL22323
Analog Specifications Over recommended operating conditions unless otherwise stated. (Continued)
MIN
TYP
MAX
SYMBOL
PARAMETER
TEST CONDITIONS
DCP register set to 80 hex
(Note 21) (Note 5) (Note 21)
UNIT
TC (Note 12, Ratiometric Temperature Coefficient
V
±4
ppm/°C
19)
f
-3dB Cut Off Frequency
Wiper at midpoint (80hex) W option (10k)
Wiper at midpoint (80hex) U option (50k)
Wiper at midpoint (80hex) T option (100k)
1000
250
kHz
kHz
kHz
cutoff
(Note 19)
120
RESISTOR MODE (Measurements between RWi and RLi with RHi not connected, or between RWi and RHi with RLi not connected)
RINL
(Note 16)
Integral Non-linearity
Differential Non-linearity
Offset
W option
-3
±1.5
±0.4
±0.5
±0.15
1
3
MI
(Note 13)
U, T option
W option
-1
1
MI
(Note 13)
RDNL
(Note 15)
-1.5
-0.5
0
1.5
0.5
5
MI
(Note 13)
U, T option
W option
MI
(Note 13)
Roffset
MI
(Note 14)
(Note 13)
U, T option
0
0.5
2
MI
(Note 13)
R
DCP-to-DCP Matching
Wipers at the same tap position with the
same terminal voltages
-2
2
MI
(Note 13)
MATCH
(Note 17)
TC
Resistance Temperature Coefficient
DCP register set between 32hex and FF hex
±40
ppm/°C
R
(Notes 18, 19)
Operating Specifications Over the recommended operating conditions unless otherwise specified.
MIN
TYP
MAX
SYMBOL
PARAMETER
TEST CONDITIONS
(Note 21) (Note 5) (Note 21)
UNIT
2
I
V
Supply Current (Volatile
V
= 5.5V, f = 400kHz; (for I C Active,
SCL
0.01
0.005
-0.05
0.2
mA
CC1
CC
CC
Write/Read)
Read and Volatile Write states only)
2
V
= 2.25V, f
= 400kHz; (for I C Active,
SCL
0.1
mA
mA
CC
Read and Volatile Write states only)
I
V- Supply Current (Volatile
Write/Read)
V- = -5.5V, V = 5.5V, f = 400kHz; (for
I C Active, Read and Volatile Write states
-0.2
-0.1
V-1
CC
SCL
2
only)
V- = -2.25V, V
= 2.25V, f
= 400kHz;
SCL
(for I C Active, Read and Volatile Write
states only)
-0.02
1.0
mA
mA
mA
mA
mA
CC
2
I
V
Supply Current (Non-volatile
V = 5.5V, V- = 5.5V, f
CC SCL
= 400kHz; (for
I C Active, Read and Non-volatile Write
states only)
2.0
1.0
CC2
CC
2
Write/Read)
V
= 2.25V, V- = -2.25V, f
SCL
= 400kHz;
0.3
CC
2
(for I C Active, Read and Non-volatile Write
states only)
I
V- Supply Current (Non-volatile
Write/Read)
V- = -5.5V, V
= 5.5V, f
CC SCL
= 400kHz; (for
I C Active, Read and Non-volatile Write
states only)
-2.0
-1.0
-1.2
-0.4
V-2
2
V- Supply Current (Non-volatile
Write/Read)
V- = -2.25V, V
= 2.25V, f
= 400kHz;
SCL
(for I C Active, Read and Non-volatile Write
states only)
CC
2
FN6422 Rev.2.00
Aug 17, 2015
Page 5 of 19
ISL22323
Operating Specifications Over the recommended operating conditions unless otherwise specified. (Continued)
MIN
TYP
MAX
SYMBOL
PARAMETER
TEST CONDITIONS
= +5.5V, V- = -5.5V @ +85°C, I C
(Note 21) (Note 5) (Note 21)
UNIT
2
I
V
Current (Standby)
V
0.5
1.0
2.0
4.0
1.0
2.0
µA
SB
CC
CC
interface in standby state
2
V
= +5.5V, V- = -5.5V @ +125°C, I C
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µs
CC
interface in standby state
2
V
= +2.25V, V- = -2.25V @ +85°C, I C
0.2
CC
interface in standby state
2
V
= +2.25V, V- = -2.25V @ +125°C, I C
0.5
CC
interface in standby state
2
I
V- Current (Standby)
V- = -5.5V, V = +5.5V @ +85°C, I C
-3.0
-5.0
-2.0
-3.0
-0.7
-1.5
-0.3
-0.4
0.5
V-SB
CC
interface in standby state
2
V- = -5.5V, V
= +5.5V @ +125°C, I C
CC
interface in standby state
2
V- = -2.25V, V
= +2.25V @ +85°C, I C
CC
interface in standby state
2
V- = -2.25V, V
= +2.25V @ +125°C, I C
CC
interface in standby state
2
I
V
Current (Shut-down)
V
= +5.5V, V- = -5.5V @ +85°C, I C
2.0
4.0
1.0
2.0
SD
CC
CC
interface in standby state
2
V
= +5.5V, V- = -5.5V @ +125°C, I C
1.0
CC
interface in standby state
2
V
= +2.25V, V- = -2.25V @ +85°C, I C
0.2
CC
interface in standby state
2
V
= +2.25V, V- = -2.25V @ +125°C, I C
0.5
CC
interface in standby state
2
I
V- Current (Standby)
V- = -5.5V, V = +5.5V @ +85°C, I C
-3.0
-5.0
-2.0
-3.0
-1
-0.7
-1.5
-0.3
-0.4
V-SB
CC
interface in standby state
2
V- = -5.5V, V
= +5.5V @ +125°C, I C
CC
interface in standby state
2
V- = -2.25V, V
= +2.25V @ +85°C, I C
CC
interface in standby state
2
V- = -2.25V, V
= +2.25V @ +125°C, I C
CC
interface in standby state
I
Leakage Current, at Pins A0, A1, A2, Voltage at pin from GND to V
SDA, and SCL
1
LkgDig
CC
t
DCP Wiper Response Time
SCL falling edge of last bit of DCP data byte
to wiper new position
1.5
1.5
WRT
(Note 19)
t
DCP Recall Time from Shut-down
SCL falling edge of last bit of ACR data byte
to wiper stored position and RH connection
µs
ShdnRec
(Note 19) Mode
Vpor
Power-on Recall Voltage
Ramp Rate
Minimum V
at which memory recall occurs
1.9
0.2
2.1
5
V
CC
VCCRamp
V
V/ms
ms
CC
t
Power-up Delay
V
above Vpor, to DCP Initial Value
CC
D
2
Register recall completed, and I C Interface
in standby state
FN6422 Rev.2.00
Aug 17, 2015
Page 6 of 19
ISL22323
Operating Specifications Over the recommended operating conditions unless otherwise specified. (Continued)
MIN
TYP
MAX
SYMBOL
EEPROM SPECIFICATION
EEPROM Endurance
PARAMETER
TEST CONDITIONS
(Note 21) (Note 5) (Note 21)
UNIT
1,000,000
50
Cycles
Years
ms
EEPROM Retention
Temperature T +55°C
t
Non-volatile Write Cycle Time
12
20
WC
(Note 20)
SERIAL INTERFACE SPECS
V
A0, A1, A2, SDA, and SCL Input
Buffer LOW Voltage
0.3*V
V
V
IL
CC
V
A0, A1, A2, SDA, and SCL Input
Buffer HIGH Voltage
0.7*V
CC
IH
Hysteresis SDA and SCL Input Buffer Hysteresis
(Note 19)
0.05*V
0
V
CC
V
SDA Output Buffer LOW Voltage,
0.4
10
V
OL
(Note 19) Sinking 4mA
Cpin
A0, A1, A2, SDA, and SCL Pin
pF
(Note 19) Capacitance
f
SCL Frequency
Pulse Width Suppression Time at SDA Any pulse narrower than the max spec is
400
50
kHz
ns
SCL
t
sp
and SCL Inputs suppressed
t
SCL Falling Edge to SDA Output Data SCL falling edge crossing 30% of V , until
CC
900
ns
ns
AA
(Note 19) Valid
SDA exits the 30% to 70% of V
window
CC
during a STOP
condition, to SDA crossing 70% of V
t
Time the Bus Must be Free Before The SDA crossing 70% of V
CC
1300
BUF
(Note 19) Start of a New Transmission
CC
during the following START condition
t
Clock LOW Time
Measured at the 30% of V
Measured at the 70% of V
crossing
crossing
1300
600
ns
ns
ns
LOW
CC
CC
t
Clock HIGH Time
HIGH
t
START Condition Setup Time
SCL rising edge to SDA falling edge; both
crossing 70% of V
600
SU:STA
HD:STA
SU:DAT
CC
From SDA falling edge crossing 30% of V
t
t
START Condition Hold Time
Input Data Setup Time
600
100
ns
ns
CC
to SCL falling edge crossing 70% of V
CC
From SDA exiting the 30% to 70% of V
CC
window, to SCL rising edge crossing 30% of
V
CC
t
Input Data Hold Time
From SCL rising edge crossing 70% of V
0
ns
HD:DAT
CC
to SDA entering the 30% to 70% of V
window
CC
t
STOP Condition Setup Time
From SCL rising edge crossing 70% of V
,
600
1300
0
ns
ns
ns
SU:STO
CC
to SDA rising edge crossing 30% of V
CC
t
STOP Condition Hold Time for Read, From SDA rising edge to SCL falling edge;
HD:STO
or Volatile Only Write
Output Data Hold Time
both crossing 70% of V
CC
t
From SCL falling edge crossing 30% of V
,
DH
(Note 19)
CC
CC
until SDA enters the 30% to 70% of V
window
t
SDA and SCL Rise Time
SDA and SCL Fall Time
From 30% to 70% of V
20 +
0.1*Cb
250
250
ns
ns
R
CC
(Note 19)
t
From 70% to 30% of V
20 +
F
CC
(Note 19)
0.1*Cb
FN6422 Rev.2.00
Aug 17, 2015
Page 7 of 19
ISL22323
Operating Specifications Over the recommended operating conditions unless otherwise specified. (Continued)
MIN
TYP
MAX
SYMBOL
PARAMETER
TEST CONDITIONS
Total on-chip and off-chip
(Note 21) (Note 5) (Note 21)
UNIT
Cb
(Note 19)
Capacitive Loading of SDA or SCL
10
1
400
pF
Rpu
SDA and SCL Bus Pull-up Resistor
Maximum is determined by t and t
k
R
F
(Note 19) Off-chip
For Cb = 400pF, max is about 2k~ 2.5k
For Cb = 40pF, max is about 15k~ 20k
t
A0, A1, and A2 Setup Time
A0, A1, and A2 Hold Time
Before START condition
After STOP condition
600
600
ns
ns
SU:A
t
HD:A
NOTES:
5. Typical values are for T = +25°C and 3.3V supply voltage.
A
6. LSB: [V(R
)
– V(R ) ]/255. V(R
)
and V(R ) are V(R ) for the DCP register set to FF hex and 00 hex respectively. LSB is the
W 0 W
W 255
W 0 W 255
incremental voltage when changing from one tap to an adjacent tap.
7. ZS error = V(RW) /LSB.
0
8. FS error = [V(RW)
– V ]/LSB.
CC
255
9. DNL = [V(RW) – V(RW) ]/LSB-1, for i = 1 to 255. i is the DCP register setting.
i-1
i
10. INL = [V(RW) – i • LSB – V(RW) ]/LSB for i = 1 to 255
i
0
11. V
12.
= [V(RWx)i -V(RWy)i]/LSB, for i = 0 to 255, x = 0 to 1, y = 0 to 1.
MATCH
MaxVRW – MinVRW
6
10
i
i
for i = 16 to 240 decimal, T = -40°C to +125°C. Max( ) is the maximum value of the wiper
MaxVRW + MinVRW 2 165°C voltage and Min ( ) is the minimum value of the wiper voltage over the temperature range.
--------------------------------------------------------------------------------------------- ----------------
TC
=
V
+
i
i
13. MI = |RW
– RW |/255. MI is a minimum increment. RW
and RW are the measured resistances for the DCP register set to FF hex and 00
255 0
255
hex respectively.
0
14. R
= RW /MI, when measuring between RW and RL.
OFFSET
0
R
= RW
/MI, when measuring between RW and RH.
OFFSET
255
15. RDNL = (RW – RW )/MI -1, for i = 16 to 255.
i-1
i
16. RINL = [RW – (MI • i) – RW ]/MI, for i = 16 to 255.
i
0
17. R
18.
= [(Rx)i -(Ry)i]/MI, for i = 0 to 255, x = 0 to 1, y = 0 to 1.
6
MATCH
for i = 16 to 240, T = -40°C to +125°C. Max( ) is the maximum value of the resistance and Min ( ) is
the minimum value of the resistance over the temperature range.
MaxRi – MinRi
10
--------------------------------------------------------------- ----------------
TC
=
R
165°C
MaxRi + MinRi 2
+
19. This parameter is not 100% tested.
2
20. t
is the time from a valid STOP condition at the end of a Write sequence of I C serial interface, to the end of the self-timed internal non-volatile
WC
write cycle.
21. Parts are 100% tested at +25°C. Temperature limits established by characterization and are not production tested.
FN6422 Rev.2.00
Aug 17, 2015
Page 8 of 19
ISL22323
DCP Macro Model
R
TOTAL
RH
RL
C
L
C
H
C
W
10pF
10pF
25pF
RW
SDA vs SCL Timing
t
sp
t
t
t
t
R
F
HIGH
LOW
SCL
t
SU:DAT
t
t
t
SU:STO
SU:STA
HD:DAT
t
HD:STA
SDA
(INPUT TIMING)
t
t
t
BUF
AA
DH
SDA
(OUTPUT TIMING)
A0, A1 and A2 Pin Timing
STOP
START
SCL
CLK 1
SDA
t
t
HD:A
SU:A
A0, A1, A2
Typical Performance Curves
80
2.0
1.5
1.0
0.5
0
T = +125°C
70
60
50
40
30
20
10
0
T = +25°C
I
CC
-0.5
-1.0
-1.5
-2.0
I
V-
T = -40°C
0
50
100
150
200
250
-40
0
40
TEMPERATURE (°C)
80
120
TAP POSITION (DECIMAL)
FIGURE 2. STANDBY I
and I vs TEMPERATURE
V-
FIGURE 1. WIPER RESISTANCE vs TAP POSITION
[ I(RW) = V /R ] FOR 10k (W)
CC
CC TOTAL
FN6422 Rev.2.00
Aug 17, 2015
Page 9 of 19
ISL22323
Typical Performance Curves (Continued)
0.50
0.50
0.25
0
V
= 5.5V
CC
T = +25°C
T = +25°C
V
= 2.25V
CC
0.25
0
-0.25
-0.50
-0.25
-0.50
V
= 5.5V
V
= 2.25V
100
CC
100
TAP POSITION (DECIMAL)
CC
0
50
150
200
250
0
50
150
200
250
TAP POSITION (DECIMAL)
FIGURE 3. DNL vs TAP POSITION IN VOLTAGE DIVIDER
FIGURE 4. INL vs TAP POSITION IN VOLTAGE DIVIDER
MODE FOR 10k (W)
MODE FOR 10k (W)
2.0
0
10k
1.6
1.2
-1
V
= 2.25V
CC
50k
V
= 5.5V
CC
-2
-3
-4
0.8
50k
10k
V
= 2.25V
V
= 5.5V
CC
CC
0.4
0
-5
-40
0
40
80
120
-40
0
40
TEMPERATURE (ºC)
80
120
TEMPERATURE (ºC)
FIGURE 6. FS ERROR vs TEMPERATURE
FIGURE 5. ZS ERROR vs TEMPERATURE
2.0
0.5
0.25
0
T = +25°C
T = +25°C
1.5
1.0
V
= 5.5V
CC
V
= 2.25V
CC
0.5
0
-0.25
-0.50
V
= 2.25V
100
CC
V
= 5.5V
CC
-0.5
0
50
100
150
200
250
0
50
150
200
250
TAP POSITION (DECIMAL)
TAP POSITION (DECIMAL)
FIGURE 8. INL vs TAP POSITION IN RHEOSTAT MODE FOR
FIGURE 7. DNL vs TAP POSITION IN RHEOSTAT MODE FOR
10k (W)
10k (W)
FN6422 Rev.2.00
Aug 17, 2015
Page 10 of 19
ISL22323
Typical Performance Curves (Continued)
200
160
120
80
1.60
10k
1.20
10k
0.80
5.5V
0.40
0.00
50k
40
50k
2.25V
0
-0.40
16
66
116
166
216
266
-40
0
40
80
120
TAP POSITION (DECIMAL)
TEMPERATURE (ºC)
FIGURE 10. TC FOR VOLTAGE DIVIDER MODE IN ppm
FIGURE 9. END TO END R
% CHANGE vs
TOTAL
TEMPERATURE
500
400
300
INPUT
OUTPUT
10k
200
100
50k
WIPER AT MID POINT (POSITION 80h)
R
= 10k
TOTAL
0
16
66
116
166
216
TAP POSITION (DECIMAL)
FIGURE 11. TC FOR RHEOSTAT MODE IN ppm
FIGURE 12. FREQUENCY RESPONSE (1MHz)
CS
SCL
WIPER UNLOADED,
WIPER
MOVEMENT FROM 0h to FFh
FIGURE 13. MIDSCALE GLITCH, CODE 7Fh TO 80h
FIGURE 14. LARGE SIGNAL SETTLING TIME
FN6422 Rev.2.00
Aug 17, 2015
Page 11 of 19
ISL22323
the corresponding WRi to set the wipers to their initial
positions.
Pin Description
Potentiometers Pins
RHI AND RLi
DCP Description
The DCP is implemented with a combination of resistor
elements and CMOS switches. The physical ends of each DCP
are equivalent to the fixed terminals of a mechanical
The high (RHi) and low (RLi) terminals of the ISL22323 are
equivalent to the fixed terminals of a mechanical
potentiometer. RHi and RLi are referenced to the relative
position of the wiper and not the voltage potential on the
terminals. With WRi set to 255 decimal, the wiper will be
closest to RHi, and with the WRi set to 0, the wiper is closest to
RLi.
potentiometer (RHi and RLi pins). The RWi pin of the DCP is
connected to intermediate nodes, and is equivalent to the
wiper terminal of a mechanical potentiometer. The position of
the wiper terminal within the DCP is controlled by an 8-bit
volatile Wiper Register (WRi). When the WRi of a DCP
contains all zeroes (WRi[7:0]= 00h), its wiper terminal (RWi) is
closest to its “Low” terminal (RLi). When the WRi register of a
DCP contains all ones (WRi[7:0] = FFh), its wiper terminal
(RWi) is closest to its “High” terminal (RHi). As the value of the
WRi increases from all zeroes (0) to all ones (255 decimal), the
wiper moves monotonically from the position closest to RLi to
the position closest to RHi. At the same time, the resistance
between RWi and RLi increases monotonically, while the
resistance between RHi and RWi decreases monotonically.
RWi
RWi is the wiper terminal, and it is equivalent to the movable
terminal of a mechanical potentiometer. The position of the
wiper within the array is determined by the WRi register.
Bus Interface Pins
SERIAL DATA INPUT/OUTPUT (SDA)
2
The SDA is a bidirectional serial data input/output pin for I C
interface. It receives device address, operation code, wiper
address and data from an I C external master device at the
rising edge of the serial clock SCL, and it shifts out data after
each falling edge of the serial clock.
2
While the ISL22323 is being powered up, the WRi is reset to
80h (128 decimal), which locates RWi roughly at the center
between RLi and RHi. After the power supply voltage becomes
large enough for reliable non-volatile memory reading, the WRi
will be reloaded with the value stored in corresponding non-
volatile Initial Value Register (IVRi).
SDA requires an external pull-up resistor, since it is an open
drain input/output.
SERIAL CLOCK (SCL)
The WRi and IVRi can be read or written to directly using the
I C serial interface as described in the following sections.
2
2
This input is the serial clock of the I C serial interface. SCL
requires an external pull-up resistor.
Memory Description
DEVICE ADDRESS (A2, A1, A0)
The ISL22323 contains two non-volatile 8-bit Initial Value Register
(IVRi), thirteen General Purpose non-volatile 8-bit registers and
three volatile 8-bit registers: two Wiper Registers (WRi) and
Access Control Register (ACR). Memory map of ISL22323 is in
Table 1. The non-volatile registers (IVRi) at address 0 and 1,
contain initial wiper position and volatile registers (WRi) contain
current wiper position.
The address inputs are used to set the least significant 3 bits of
the 7-bit I C interface slave address. A match in the slave
2
address serial data stream must match with the Address input
pins in order to initiate communication with the ISL22323. A
2
maximum of eight ISL22323 devices may occupy the I C serial
bus (See Table 3).
TABLE 1. MEMORY MAP
Principles of Operation
The ISL22323 is an integrated circuit incorporating two DCPs
with its associated registers, non-volatile memory and an I C
serial interface providing direct communication between a host
and the potentiometer and memory. The resistor arrays are
comprised of individual resistors connected in a series. At
either end of the array and between each resistor is an
electronic switch that transfers the potential at that point to the
wiper.
ADDRESS
(hex)
10
F
NON-VOLATILE
VOLATILE
2
N/A
ACR
Reserved
E
General Purpose
General Purpose
General Purpose
General Purpose
General Purpose
General Purpose
General Purpose
General Purpose
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
D
C
B
The electronic switches on the device operate in a “make
before break” mode when the wiper changes tap positions.
A
9
When the device is powered down, the last value stored in IVRi
will be maintained in the non-volatile memory. When power is
restored, the contents of the IVRi are recalled and loaded into
8
7
FN6422 Rev.2.00
Aug 17, 2015
Page 12 of 19
ISL22323
2
TABLE 1. MEMORY MAP (Continued)
All communication over the I C interface is conducted by
sending the MSB of each byte of data first.
ADDRESS
(hex)
NON-VOLATILE
General Purpose
General Purpose
General Purpose
General Purpose
General Purpose
IVR1
VOLATILE
Protocol Conventions
6
5
4
3
2
1
0
N/A
N/A
Data states on the SDA line must change only during SCL
LOW periods. SDA state changes during SCL HIGH are
reserved for indicating START and STOP conditions (see
Figure 16). On power-up of the ISL22323, the SDA pin is in the
input mode.
N/A
N/A
N/A
2
All I C interface operations must begin with a START
WR1
WR0
condition, which is a HIGH to LOW transition of SDA while SCL
is HIGH. The ISL22323 continuously monitors the SDA and
SCL lines for the START condition and does not respond to
any command until this condition is met (see Figure 16). A
START condition is ignored during the power-up of the device.
IVR0
The non-volatile IVRi and volatile WRi registers are accessible
with the same address.
2
The Access Control Register (ACR) contains information and
control bits described in Table 2.
All I C interface operations must be terminated by a STOP
condition, which is a LOW to HIGH transition of SDA while SCL
is HIGH (see Figure 16). A STOP condition at the end of a read
operation, or at the end of a write operation places the device
in its standby mode.
The VOL bit (ACR[7]) determines whether the access to wiper
registers WRi or initial value registers IVRi.
TABLE 2. ACCESS CONTROL REGISTER (ACR)
An ACK (Acknowledge) is a software convention used to
indicate a successful data transfer. The transmitting device,
either master or slave, releases the SDA bus after transmitting
eight bits. During the ninth clock cycle, the receiver pulls the
SDA line LOW to acknowledge the reception of the eight bits of
data (see Figure 17).
BIT #
7
6
5
4
0
3
0
2
0
1
0
0
0
NAME
VOL
SHDN WIP
If VOL bit is 0, the non-volatile IVRi registers are accessible. If
VOL bit is 1, only the volatile WRi are accessible. Note: value
is written to IVRi register also is written to the corresponding
WRi. The default value of this bit is 0.
The ISL22323 responds with an ACK after recognition of a
START condition followed by a valid Identification Byte, and
once again after successful receipt of an Address Byte. The
ISL22323 also responds with an ACK after receiving a Data
Byte of a write operation. The master must respond with an
ACK after receiving a Data Byte of a read operation
The SHDN bit (ACR[6]) disables or enables Shut-down mode.
When this bit is 0, DCPs are in Shut-down mode. Default value of
the SHDN bit is 1.
RHi
A valid Identification Byte contains 1010 as the four MSBs, and
the following three bits matching the logic values present at
pins A2, A1 and A0. The LSB is the Read/Write bit. Its value is
“1” for a Read operation and “0” for a Write operation (See
Table 3).
RWi
TABLE 3. IDENTIFICATION BYTE FORMAT
RLi
FIGURE 15. DCP CONNECTION IN SHUT-DOWN MODE
LOGIC VALUES AT PINS A2, A1 AND A0, RESPECTIVELY
The WIP bit (ACR[5]) is a read-only bit. It indicates that
non-volatile write operation is in progress. It is impossible to
write to the WRi or ACR while WIP bit is 1.
1
0
1
0
A2
A1
A0
R/W
(MSB)
(LSB)
2
I C Serial Interface
2
The ISL22323 supports an I C bidirectional bus oriented
protocol. The protocol defines any device that sends data onto
the bus as a transmitter and the receiving device as the
receiver. The device controlling the transfer is a master and the
device being controlled is the slave. The master always
initiates data transfers and provides the clock for both transmit
and receive operations. Therefore, the ISL22323 operates as a
slave device in all applications.
FN6422 Rev.2.00
Aug 17, 2015
Page 13 of 19
ISL22323
SCL
SDA
START
DATA
DATA
DATA
STOP
STABLE
CHANGE STABLE
FIGURE 16. VALID DATA CHANGES, START AND STOP CONDITIONS
SCL FROM
MASTER
1
8
9
SDA OUTPUT FROM
TRANSMITTER
HIGH IMPEDANCE
HIGH IMPEDANCE
SDA OUTPUT FROM
RECEIVER
START
ACK
FIGURE 17. ACKNOWLEDGE RESPONSE FROM RECEIVER
WRITE
S
SIGNALS FROM
THE MASTER
T
A
R
T
S
T
O
P
IDENTIFICATION
BYTE
ADDRESS
BYTE
DATA
BYTE
SIGNAL AT SDA
1 0 1 0 A2A1A0 0
0 0 0 0
SIGNALS FROM
THE SLAVE
A
C
K
A
C
K
A
C
K
FIGURE 18. BYTE WRITE SEQUENCE
S
T
A
R
T
S
T
A
R
T
SIGNALS
FROM THE
MASTER
S
T
O
P
A
C
K
A
C
K
IDENTIFICATION
BYTE WITH
R/W = 0
IDENTIFICATION
BYTE WITH
R/W = 1
A
C
K
ADDRESS
BYTE
SIGNAL AT SDA
1 0 1 0 A2A1A0 0
0 0 0 0
1 0 1 A2A1A0 1
0
A
C
K
A
C
K
A
C
K
SIGNALS FROM
THE SLAVE
FIRST READ
DATA BYTE
LAST READ
DATA BYTE
FIGURE 19. READ SEQUENCE
FN6422 Rev.2.00
Aug 17, 2015
Page 14 of 19
ISL22323
More application examples can be found at:
http://www.intersil.com/data/an/AN1145.pdf
Write Operation
A Write operation requires a START condition, followed by a
valid Identification Byte, a valid Address Byte, a Data Byte, and
a STOP condition. After each of the three bytes, the ISL22323
responds with an ACK. At this time, the device enters its
standby state (See Figure 18).
The non-volatile write cycle starts after STOP condition is
determined and it requires up to 20ms delay for the next non-
volatile write. Thus, non-volatile registers must be written
individually.
Read Operation
A Read operation consist of a three byte instruction followed by
one or more Data Bytes (See Figure 19). The master initiates
the operation issuing the following sequence: a START, the
Identification byte with the R/W bit set to “0”, an Address Byte,
a second START, and a second Identification byte with the R/W
bit set to “1”. After each of the three bytes, the ISL22323
responds with an ACK. Then the ISL22323 transmits Data
Bytes as long as the master responds with an ACK during the
SCL cycle following the eighth bit of each byte. The Data Bytes
are from the registers indicated by an internal pointer. This
pointers initial value is determined by the Address Byte in the
Read operation instruction, and increments by one during
transmission of each Data Byte. After reaching the memory
location 0Fh, the pointer “rolls over” to 00h, and the device
continues to output data for each ACK received.The master
terminates the read operation issuing a NACK (ACK) and a
STOP condition following the last bit of the last Data Byte (See
Figure 19).
Applications Information
Wiper Transition
When stepping up through each tap in voltage divider mode,
some tap transition points can result in noticeable voltage
transients (or overshoot/undershoot) resulting from the sudden
transition from a very low impedance “make” to a much higher
impedance “break within an extremely short period of time
(<50ns). Two such code transitions are EFh to F0h, and 0Fh to
10h. Note that all switching transients will settle well within the
settling time as stated on the datasheet. A small capacitor can
be added externally to reduce the amplitude of these voltage
transients, but that will also reduce the useful bandwidth of the
circuit, thus this may not be a good solution for some
applications. It may be a good idea, in that case, to use fast
amplifiers in a signal chain for fast recovery.
Application Example
Figure 20 shows an example of using ISL22323 for gain setting
and offset correction in high side current measurement
application. DCP0 applies a programmable offset voltage of
±25mV to the FB+ pin of the Instrumentation Amplifier EL8173
to adjust output offset to zero voltages. DCP1 programs the
gain of the EL8173 from 90 to 110 with 5V output for 10A
current through current sense resistor.
FN6422 Rev.2.00
Aug 17, 2015
Page 15 of 19
ISL22323
1.2V
DC/DC CONVERTER
OUTPUT
PROCESSOR LOAD
10A, MAX
0.005
+5V
10k
10k
0.1µF
8
EL8173IS
1
V +
S
3
2
7
5
IN+
IN-
EN
6
V
V
= 0V TO +5V to ADC
OUT
OUT
FB+
+5V
R
4
FB-
V -
S
150k, 1%
R
1
4
50k, 1%
RH1
RL1
RH0
RW1
R
5
309, 1%
R
2
1k, 1%
RW0
RL0
50k
50k
DCP0 (1/2 ISL22323U)
PROGRAMMABLE OFFSET ±25mV
DCP1 (1/2 ISL22323U)
PROGRAMMABLE GAIN 90 TO 110
R
6
R
3
1.37k, 1%
50k, 1%
-5V
ISL22323UFV14Z
14
1
2
3
+5V
I C BUS
VCC
RH0
RL0
RW0
DCP0
DCP1
10
9
7
12
13
2
SCL
SDA
A2
A1
A0
4
5
6
RH1
RL1
RW1
11
8
GND
-5V
V-
FIGURE 20. CURRENT SENSING WITH GAIN AND OFFSET CONTROL
FN6422 Rev.2.00
Aug 17, 2015
Page 16 of 19
ISL22323
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to the web to make
sure that you have the latest revision.
DATE
REVISION
CHANGE
August 17, 2015
FN6422.2
- Ordering Information Table on page 2.
- Added Revision History
- Added About Intersil Verbiage.
- Updated POD L16.4X4A to latest revision changes are as follow:
Updated to new POD format by removing table listing dimensions and moving dimensions onto drawing.
Added Typical Recommended Land Pattern. Removed package option.
- Updated POD M14.173 to most current version changes are as follow:
Updated drawing to remove table and added land pattern.
About Intersil
Intersil Corporation is a leading provider of innovative power management and precision analog solutions. The company's products
address some of the largest markets within the industrial and infrastructure, mobile computing and high-end consumer markets.
For the most updated datasheet, application notes, related documentation and related parts, please see the respective product
information page found at www.intersil.com.
You may report errors or suggestions for improving this datasheet by visiting www.intersil.com/ask.
Reliability reports are also available from our website at www.intersil.com/support
© Copyright Intersil Americas LLC 2008-2015. All Rights Reserved.
All trademarks and registered trademarks are the property of their respective owners.
For additional products, see www.intersil.com/en/products.html
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found at www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such
modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets are
current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its
subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
FN6422 Rev.2.00
Aug 17, 2015
Page 17 of 19
ISL22323
Package Outline Drawing
L16.4x4A
16 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE
Rev 3, 03/15
2.40
4.00
A
4X 1.50
6
B
PIN #1
INDEX AREA
13
16
6
PIN 1
INDEX AREA
12
0.50
1
4
12X
2.40
9
(4X)
0.15
5
8
0.10 M C A B
TOP VIEW
16x 0.40±0.01
+0.05
0.25
4
-0.07
BOTTOM VIEW
SEE
DETAIL "X"
0.90±0.10
C
0.10
SEATING
PLANE
0.08 C
C
SIDE VIEW
(3.8 TYP)
(
2.40)
(12x 0.50)
5
C
0.20 REF
(16x 0.25)
(16x 0.60)
+0.03/-0.02
DETAIL "X"
TYPICAL RECOMMENDED LAND PATTERN
NOTES:
1. Dimensions are in millimeters.
Dimensions in ( ) for Reference Only.
2. Dimensioning and tolerancing conform to ASME Y14.5m-1994.
3. Unless otherwise specified, tolerance: Decimal ± 0.05
4. Dimension applies to the metallized terminal and is measured
between 0.15mm and 0.30mm from the terminal tip.
5. Tiebar shown (if present) is a non-functional feature.
6. The configuration of the pin #1 identifier is optional, but must be
located within the zone indicated. The pin #1 identifier may be either
a mold or mark feature.
FN6422 Rev.2.00
Aug 17, 2015
Page 18 of 19
ISL22323
Package Outline Drawing
M14.173
14 LEAD THIN SHRINK SMALL OUTLINE PACKAGE (TSSOP)
Rev 3, 10/09
A
1
3
5.00 ±0.10
SEE
DETAIL "X"
14
8
6.40
PIN #1
I.D. MARK
4.40 ±0.10
2
3
1
7
0.20 C B A
B
0.65
0.09-0.20
TOP VIEW
END VIEW
1.00 REF
0.05
H
C
0.90 +0.15/-0.10
1.20 MAX
SEATING
PLANE
GAUGE
PLANE
0.25
5
0.25 +0.05/-0.06
0.10 CBA
0°-8°
0.60 ±0.15
0.05 MIN
0.15 MAX
0.10 C
SIDE VIEW
DETAIL "X"
(1.45)
NOTES:
1. Dimension does not include mold flash, protrusions or gate burrs.
Mold flash, protrusions or gate burrs shall not exceed 0.15 per side.
2. Dimension does not include interlead flash or protrusion. Interlead
flash or protrusion shall not exceed 0.25 per side.
(5.65)
3. Dimensions are measured at datum plane H.
4. Dimensioning and tolerancing per ASME Y14.5M-1994.
5. Dimension does not include dambar protrusion. Allowable protrusion
shall be 0.80mm total in excess of dimension at maximum material
condition. Minimum space between protrusion and adjacent lead is 0.07mm.
6. Dimension in ( ) are for reference only.
(0.65 TYP)
(0.35 TYP)
7. Conforms to JEDEC MO-153, variation AB-1.
TYPICAL RECOMMENDED LAND PATTERN
FN6422 Rev.2.00
Aug 17, 2015
Page 19 of 19
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