ISL23512 [INTERSIL]
Single Push Button Controlled Potentiometer; 单按钮控制电位器
| 型号： | ISL23512 |
| 厂家： | 
Intersil |
| 描述： | Single Push Button Controlled Potentiometer |
| 文件： | 总9页 (文件大小：225K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ISL23512
®
Single Push Button Controlled Potentiometer (XDCP™)
Data Sheet
November 27, 2007
FN6590.0
Low Noise, Low Power, 16 Taps, Push
Button Controlled Potentiometer
Features
• Solid-state volatile potentiometer
• Push button controlled
he Intersil ISL23512 is a three-terminal digitally-controlled
potentiometer (XDCP) implemented by a resistor array
composed of 15 resistive elements and a wiper switching
network. The ISL23512 features a pushbutton control, a
shutdown mode, as well as an industry-leading microTQFN
package.
• Single or Auto increment/decrement
- Fast Mode after 1s button press
• Shutdown Mode
• 16 wiper tap points
The pushbutton control has individual PU and PD inputs for
adjusting the wiper. To eliminate redundancy the wiper
position will automatically increment or decrement if one of
these inputs is held longer than one second.
- Zero scale wiper position on power-up
• Low power CMOS
- VCC = 2.7V to 5.5V
- Terminal voltage, 0 to V
CC
Forcing both PU and PD low for more than two seconds
activates shutdown mode. Shutdown mode disconnects the
top of the resistor chain and moves the wiper to the lowest
position, minimizing power consumption.
- Standby current, 3µA max
• RTOTAL value = 10kΩ
• Packages
- 10 Ld µTQFN (2.05mmx1.55mm)
- Pb-free (RoHS compliant)
The three terminals accessing the resistor chain naturally
configure the ISL23512 as a voltage divider. A rheostat is
easily formed by floating an end terminal or connecting it to
the wiper.
Applications
• Volume Control
Pinout
ISL23512
(10 LD µTQFN)
TOP VIEW
• LED/LCD Brightness Control
• Contrast Control
NC
• Programming Bias Voltages
• Ladder Networks
O
10
NC
V
PU
1
2
3
4
9
8
7
6
PD
RH
CC
NC
RL
V
SS
5
RW
Ordering Information
PART NUMBER
(Notes 1, 2)
RTOTAL
(kΩ)
TEMPERATURE
RANGE (°C)
PACKAGE
(Pb-free)
PART MARKING
PKG. DWG. #
ISL23512WFRU10Z-TK
NOTES:
GB
10
-40 to +125
10 Ld µTQFN
L10.2.1x1.6A
1. These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and NiPdAu
plate - e4 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. Please refer to TB347 for details on reel specifications.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL23512
Pin Descriptions
µTQFN
PIN
SYMBOL
PU
BRIEF DESCRIPTION
1
The PU is a negative-edge triggered input with internal pull-up. Toggling PU will move the wiper close to RH terminal.
The PD is a negative-edge triggered input with internal pull-up. Toggling PD will move the wiper close to RL terminal.
The RH and RL pins of the ISL23512 are equivalent to the fixed terminals of a mechanical potentiometer. The minimum
2
PD
3
RH
voltage is V
and the maximum is V . The terminology of RH and RL references the relative position of the terminal in
SS
CC
relation to wiper movement direction selected by the PU/PD input.
4
5
VSS
RW
Ground
The RW pin is the wiper terminal of the potentiometer which is equivalent to the movable terminal of a mechanical
potentiometer.
6
RL
The RH and RL pins of the ISL23512 are equivalent to the fixed terminals of a mechanical potentiometer. The minimum
voltage is V
and the maximum is V . The terminology of RH and RL references the relative position of the terminal in
SS
CC
relation to wiper movement direction selected by the PU/PD input.
7, 9, 10
8
NC
No connection.
Supply Voltage.
VCC
Block Diagrams
V
(SUPPLY VOLTAGE)
CC
4-BIT
UP/DOWN
COUNTER
RH
15
PU
PD
14
13
12
RH
PU
PD
CONTROL
BLOCK
ONE
OF
RW
RW
SIXTEEN
DECODER
RESISTOR
ARRAY
TRANSFER
GATES
RL
2
1
0
V
(GROUND)
SS
RL
GENERAL
DETAILED
FN6590.0
November 27, 2007
2
ISL23512
Absolute Maximum Ratings
Thermal Information
Storage temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Voltage at PU and PD Pin with Respect to GND . . -0.3V to VCC+0.3
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to +6V
Voltage at any DCP Pin with Respect to GND. . . . . . . .-0.3V to VCC
IW (10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±6mA
Latchup . . . . . . . . . . . . . . . . . . . . . . . . . Class II, Level A @ +125°C
ESD Rating
Thermal Resistance (Typical, Notes 3, 4)
10 Ld µTQFN . . . . . . . . . . . . . . . . . . . .
Maximum Junction Temperature (Plastic Package). . . . . . . . +150°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
θ
JA (°C/W)
150
θ
JC (°C/W)
48.3
Recommended Operating Conditions
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3kV
Machine Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .250V
Temperature Range (Extended Industrial). . . . . . . .-40°C to +125°C
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
Power Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15mW
Wiper Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±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. θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
4. θJC is for the location in the center of the exposed metal pad on the package underside.
Potentiometer Specifications
Over recommended operating conditions, unless otherwise specified.
MIN
TYP
MAX
SYMBOL
PARAMETER
TEST CONDITIONS
(Note 18) (Note 5) (Note 18)
UNIT
kΩ
RTOTAL
RH to RL Resistance
W option
W option
10
RH to RL Resistance Tolerance
End-to-End Temperature Coefficient
-20
+20
%
±80
130
ppm/°C
(Note 16)
RW
Wiper Resistance
wiper current = VCC/RTOTAL
VRH and VRL to GND
400
VCC
Ω
V
VRH, VRL
VRH and VRL Terminal Voltages
Potentiometer Capacitance
0
CH/CL/CW
(Note 17)
10/10/25
0.1
pF
ILkgDCP
Leakage on DCP Pins
Voltage at pin from GND to VCC
1
µA
VOLTAGE DIVIDER MODE (0V @ RL; VCC @ RH; measured at RW unloaded)
INL
(Note 10)
Integral Non-linearity
Differential Non-linearity
Zero-scale Error
-1
-0.5
0
1
0.5
3
LSB
(Note 6)
DNL
(Note 9)
Monotonic over all tap positions
W option
LSB
(Note 6)
ZSerror
(Note 7)
0.3
-0.3
±4
LSB
(Note 6)
FSerror
(Note 8)
Full-scale Error
W option
-3
0
LSB
(Note 6)
TCV
Ratiometric Temperature Coefficient
DCP register set to 8 hex
ppm/°C
(Note 11)
RESISTOR MODE (Measurements between RW and RL with RH not connected, or between RW and RH with RL not connected)
RINL
(Note 15)
Integral Non-linearity
Differential Non-linearity
Offset
DCP register set between 1 hex and F
hex; monotonic over all tap positions
-1.5
1.5
MI
(Note 12)
RDNL
(Note 14)
W option
-1
1
MI
(Note 12)
Roffset
W option
0
1
3
MI
(Note 13)
(Note 12)
FN6590.0
November 27, 2007
3
ISL23512
DC Electrical Specifications Over recommended operating conditions unless otherwise specified.
MIN
TYP
MAX
SYMBOL
PARAMETER
VCC Active Current
TEST CONDITIONS
(Note 18) (Note 5) (Note 18)
UNIT
ICC
VCC = 5.5V, perform wiper move
operation
150
µA
ISB
ILkg
VIH
VIL
Stand-by Current
Monotonic over all tap positions
VIN = VSS to VCC
0.6
3
µA
µA
V
PU, PD Input Leakage Current
PU, PD Input HIGH Voltage
PU, PD Input LOW Voltage
PU, PD Input Capacitance
-2
+2
VCC x 0.7
VCC x 0.1
V
CIN
(Note 17)
VCC = 3.3V, TA = +25°C, f = 1MHz
10
1
pF
Rpull_up
(Note 17)
Pull-up Resistor for PU and PD
MΩ
AC Electrical Specifications Over recommended operating conditions, unless otherwise specified. Limits are established by
characterization.
MIN
TYP
MAX
SYMBOL
tGAP
PARAMETER
Time Between Two Separate Push Button Events
Debounce Time
(Note 18)
(Note 5)
(Note 18)
UNIT
1
15
250
50
2
ms
ms
ms
ms
s
tDB
30
375
75
tS SLOW
tS FAST
tstdn
Wiper Change on a Slow Mode
100
25
Wiper Change on a Fast Mode
Time to Enter Shutdown Mode (Keep PU and PD Low)
Power-up to Wiper Stable, if Different from Zero Scale
Vcc Power-up Rate
tPU
500
50
µs
t
R VCC
NOTES:
5. Typical values are for TA = +25°C and 3.3V supply voltage.
0.2
V/ms
6. LSB: [V(RW)15 – V(RW)0]/15. V(RW)15 and V(RW)0 are voltage on RW pin for the DCP register set to F hex and 0 hex respectively. LSB is the
incremental voltage when changing from one tap to an adjacent tap.
7. ZS error = V(RW)0/LSB.
8. FS error = [V(RW)15 – VCC]/LSB.
9. DNL = [V(RW)i – V(RW)i-1]/LSB -1, for i = 1 to 15; i is the DCP register setting.
10. INL = [V(RW)i – i • LSB – V(RW)]/LSB for i = 1 to 15
Max(V(RW) ) – Min(V(RW) )
6
10
i
i
11.
for i = 5 to 15 decimal, T = -40°C to +125°C. Max( ) is the maximum value of the wiper
[Max(V(RW) ) + Min(V(RW) )] ⁄ 2 +165°C voltage and Min ( ) is the minimum value of the wiper voltage over the temperature range.
--------------------------------------------------------------------------------------------- --------------------
TC
=
×
V
i
i
12. MI = |RW15 – RW0|/15. MI is a minimum increment. RW15 and RW0 are the measured resistances for the DCP register set to 0F hex and 00
hex respectively.
13. Roffset = RW0/MI, when measuring between RW and RL.
Roffset = RW15/MI, when measuring between RW and RH.
14. RDNL = (RWi – RWi-1)/MI, for i = 1 to 15.
15. RINL = [RWi – (MI • i) – RW0]/MI, for i = 1 to 15.
6
16.
for i = 5 to 15, 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.
[Max(Ri) – Min(Ri)]
10
--------------------------------------------------------------- --------------------
TC
=
×
R
+165°C
[Max(Ri) + Min(Ri)] ⁄ 2
17. Limits should be considered typical and are not production tested.
18. Parts are 100% tested at +25°C. Over-temperature limits established by characterization and are not production tested.
FN6590.0
November 27, 2007
4
ISL23512
Slow Mode Timing
t
DB
t
GAP
PU
*
MI
V
W
*MI in the AC timing diagram refers to the minimum incremental change in the wiper voltage.
Fast Mode Timing
t
DB
PU
t
S FAST
t
S SLOW
*
MI
V
W
1s
*MI in the AC timing diagram refers to the minimum incremental change in the wiper voltage.
Shutdown Mode Timing
t
DB
2 SECONDS
SHUTDOWN MODE
PU
PD
V
W
FN6590.0
November 27, 2007
5
ISL23512
Typical Performance Curves
3.0
2.5
2.0
1.5
1.0
0.5
0
160
V
= 5.5V
CC
+125ºC
+25ºC
140
120
V
= 5V
CC
100
80
60
40
20
0
V
= 2.7V
CC
-40ºC
0
3
6
9
12
15
-40
-15
10
35
60
85
110
TEMPERATURE (°C)
TAP POSITION (DECIMAL
FIGURE 1. WIPER RESISTANCE vs TAP POSITION
FIGURE 2. STANDBY ICC vs TEMPERATURE
[ I(RW) = VCC/RTOTAL ] FOR 10kΩ (W)
0.05
0.10
0.05
V
= 5.5V
CC
0.03
0.01
V
= 5.5V
CC
0.00
-0.01
-0.03
-0.05
V
= 2.7V
CC
-0.05
-0.10
V
= 2.7V
CC
0
3
6
9
12
15
0
3
6
9
12
15
TAP POSITION (DECIMAL
TAP POSITION (DECIMAL)
FIGURE 3. DNL vs TAP POSITION IN VOLTAGE DIVIDER
FIGURE 4. INL vs TAP POSITION IN VOLTAGE DIVIDER
MODE FOR 10kΩ (W)
MODE FOR 10kΩ (W)
0.0030
0
V
= 2.7V
CC
0.0025
0.0020
0.0015
0.0010
0.0005
0
-0.2
-0.4
-0.6
-0.8
-1
V
= 5.5V
V
= 5.5V
CC
CC
V
= 2.7V
CC
-40
-15
10
35
60
85
110
-40
-15
10
35
60
85
110
TEMPERATURE (ºC)
TEMPERATURE (ºC)
FIGURE 6. FS ERROR vs TEMPERATURE
FIGURE 5. ZS ERROR vs TEMPERATURE
FN6590.0
November 27, 2007
6
ISL23512
Typical Performance Curves (Continued)
0.2
0.5
0.3
V = 2.7V
CC
V
= 2.7V
CC
0.1
0.0
0.1
-0.1
-0.3
-0.5
V
= 5.5V
-0.1
-0.2
CC
V
= 5.5V
CC
0
3
6
9
12
15
0
3
6
9
12
15
TAP POSITION (DECIMAL)
TAP POSITION (DECIMAL)
FIGURE 7. DNL vs TAP POSITION IN RHEOSTAT MODE FOR
FIGURE 8. INL vs TAP POSITION IN RHEOSTAT MODE FOR
10kΩ (W)
10kΩ (W)
1.20
30
25
V
= 5.5V
CC
0.60
0.00
V
= 2.7V
20
15
10
5
CC
V
= 5.5V
CC
V
= 2.7V
CC
-0.60
-1.20
0
5
7
9
11
13
15
-40
-15
10
35
60
85
110
TAP POSITION (DECIMAL)
TEMPERATURE (ºC)
FIGURE 10. TC FOR VOLTAGE DIVIDER MODE IN ppm
FIGURE 9. END TO END RTOTAL % CHANGE vs
TEMPERATURE
300
250
200
INPUT SINEWAVE
V
= 2.7V
CC
150
100
50
V
= 5.5V
CC
MIDSCALE
OUTPUT
3dB CUT OFF = 500kHz
0
5
7
9
11
13
15
TAP POSITION (DECIMAL)
FIGURE 11. TC FOR RHEOSTAT MODE IN ppm
FIGURE 12. FREQUENCY RESPONSE (500kHz)
FN6590.0
November 27, 2007
7
ISL23512
Internal debounce circuitry prevents inadvertent switching of
Power-Up and Power-Down Requirements
the wiper position if PU or PD remain LOW for less than
15ms, typical. Each of the buttons can be pushed either
once for a single increment/decrement or continuously for a
multiple increments/decrements. The number of
There are no restrictions on the power-up or power-down
conditions of VCC and the voltages applied to the
potentiometer pins provided that VCC is always more
positive than or equal to VRH and VRL, i.e., VCC ≥ VRH,VRL
.
increments/decrements of the wiper position depend on how
long the button is being pushed. When making a continuous
push, after the first second, the increment/decrement speed
increases. For the first second, the device will be in the slow
scan mode. Then, if the button is held for longer than 1s, the
device will go into the fast scan mode. As soon as the button
is released, the ISL23512 will return to a stand-by condition.
The VCC ramp rate specification is always in effect.
Pin Descriptions
RH and RL
The RH and RL pins of the ISL23512 are equivalent to the
fixed terminals of a mechanical potentiometer. The minimum
voltage is V and the maximum is V . The terminology of
SS
CC
If both PU and PD buttons are pulled low more than 15ms
from each other, all commands are ignored upon release of
ALL buttons.
RH and RL references the relative position of the terminal in
relation to wiper movement direction.
RW
The wiper, when at either fixed terminal, acts like its
mechanical equivalent and does not move beyond the last
position. That is, the counter does not wrap around when
clocked to either extreme.
The RW pin is the wiper terminal of the potentiometer, which
is equivalent to the movable terminal of a mechanical
potentiometer. The default wiper position at power-up is at
0 tap.
Shutdown Mode
PU
The ISL23512 enters into Shutdown Mode if both PU and
PD inputs are kept LOW for 2 seconds. In this mode, the
resistors array is totally disconnected from its RH pin and the
wiper is moved to the position closest to the RL pin, as
shown in Figure 13.
The debounced PU input is used to increment the wiper
position. An on-chip pull-up holds the PU input HIGH. A
switch closure to ground or a LOW logic level will, after a
debounce time, move the wiper to the next adjacent higher
tap position.
RH
PD
The debounced PD input is used to decrement the wiper
position. An on-chip pull-up holds the PD input HIGH. A
switch closure to ground or a LOW logic level will, after a
debounce time, move the wiper to the next adjacent lower
tap position.
RW
RL
FIGURE 13. DCP CONNECTION IN SHUTDOWN MODE
Device Operation
There are three sections of the ISL23512: the input control,
the counter and decode section and the resistor array. The
input control section operates just like an up/down counter.
The output of this counter is decoded to turn on a single
electronic switch, connecting a point on the resistor array to
the wiper output. The resistor array is comprised of 15
individual resistors connected in 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.
Note that PU and PD inputs must be pulled LOW within tDB
time window of 15ms (see “Shutdown Mode Timing” on
page 5.) otherwise all commands will be ignored until both
inputs are released.
Holding either PU or PD input LOW for more than 15ms will
exit shutdown mode and return wiper to prior shutdown
position. If PU or PD will be held LOW for more than 250ms,
the ISL23512 will start auto-increment or auto-decrement of
wiper position.
The ISL23512 is designed to interface directly to two push
button switches for effectively moving the wiper up or down.
The PU and PD inputs increment or decrement a 4-bit counter
respectively. The output of this counter is decoded to select
one of the sixteen wiper positions along the resistive array.
The wiper increment input, PU and the wiper decrement input,
PD are both connected to an internal pull-up so that they
normally remain HIGH. When pulled LOW by an external
push button switch or a logic LOW level input, the wiper will be
switched to the next adjacent tap position.
R
with V Removed
CC
TOTAL
The end to end resistance of the array will fluctuate once
CC is removed.
V
FN6590.0
November 27, 2007
8
ISL23512
Ultra Thin Quad Flat No-Lead Plastic Package (UTQFN)
L10.2.1x1.6A
D
A
B
10 LEAD ULTRA THIN QUAD FLAT NO-LEAD PLASTIC
PACKAGE
6
MILLIMETERS
INDEX AREA
N
E
SYMBOL
MIN
0.45
NOMINAL
MAX
0.55
NOTES
2X
0.10 C
A
A1
A3
b
0.50
-
1
2
2X
0.10 C
-
-
0.05
-
TOP VIEW
0.127 REF
-
0.15
2.05
1.55
0.20
0.25
2.15
1.65
5
0.10 C
0.05 C
D
2.10
-
C
A
E
1.60
-
SEATING PLANE
e
0.50 BSC
-
A1
k
0.20
0.35
-
0.40
10
4
-
-
SIDE VIEW
L
0.45
-
(DATUM A)
N
2
PIN #1 ID
Nd
Ne
θ
3
4xk
1
2
NX L
1
3
N
0
-
12
4
(DATUM B)
Rev. 3 6/06
N-1
NOTES:
5
NX b
e
1. Dimensioning and tolerancing conform to ASME Y14.5-1994.
2. N is the number of terminals.
3. Nd and Ne refer to the number of terminals on D and E side,
respectively.
0.10 M C A B
0.05 M C
3
(ND-1) X e
4. All dimensions are in millimeters. Angles are in degrees.
5. Dimension b applies to the metallized terminal and is measured
between 0.15mm and 0.30mm from the terminal tip.
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.
BOTTOM VIEW
C
L
(A1)
NX (b)
L
5
7. Maximum package warpage is 0.05mm.
e
8. Maximum allowable burrs is 0.076mm in all directions.
9. Same as JEDEC MO-255UABD except:
SECTION "C-C"
TERMINAL TIP
C C
No lead-pull-back, "A" MIN dimension = 0.45 not 0.50mm
"L" MAX dimension = 0.45 not 0.42mm.
FOR ODD TERMINAL/SIDE
10. For additional information, to assist with the PCB Land Pattern
Design effort, see Intersil Technical Brief TB389.
b
2.50
1.75
0.05 MIN
L
2.00
0.80
0.275
0.10 MIN
0.25
0.50
DETAIL “A” PIN 1 ID
10
LAND PATTERN
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets 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
FN6590.0
November 27, 2007
9
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Terminal Voltage ±3V or ±5V, 128 Taps Up/Down Interface; MSOP10; Temp Range: -40° to 85°C
RENESAS
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