CAT5127 [CATALYST]
32-Tap Digitally Programmable Potentiometer (DPP™); 32抽头数字可编程电位计（ DPP ™ ）
| 型号： | CAT5127 |
| 厂家： | 
CATALYST SEMICONDUCTOR |
| 描述： | 32-Tap Digitally Programmable Potentiometer (DPP™) |
| 文件： | 总13页 (文件大小：233K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CAT5127, CAT5129
32-Tap Digitally Programmable Potentiometer (DPP™)
FEATURES
DESCRIPTION
32-position linear taper potentiometer
Non-volatile EEPROM wiper storage
Low standby current
The CAT5127/CAT5129 are single digitally programmable
potentiometers (DPP™) designed as a electronic
replacement for mechanical potentiometers and trim
pots. Ideal for automated adjustments on high volume
production lines, they are also well suited for
applications where equipment requiring periodic
adjustment is either difficult to access or located in a
hazardous or remote environment.
Single supply operation: 2.5V – 5.5V
Increment Up/Down serial interface
Resistance values: 10kΩ, 50kΩ and 100kΩ
CAT5127 in tiny 8-lead 2mm x 2.5mm TDFN and
MSOP packages
The CAT5127 contains a 32-tap series resistor array
connected between two terminals RH and RL. The
CAT5129 contains a 32-tap series resistor array
connected between two terminals RH and GND. An
up/down counter and decoder that are controlled by
three input pins, determines which tap is connected to
the wiper. The wiper setting, stored in nonvolatile
memory, is not lost when the device is powered down
and is automatically reinstated when power is
returned. The wiper can be adjusted to test new
system values without effecting the stored setting.
CAT5129 in the 6-lead TSOT23 package
APPLICATION
Automated product calibration
Remote control adjustments
Offset, gain and zero control
Tamper-proof calibrations
Contrast, brightness and volume controls
Motor controls and feedback systems
Programmable analog functions
Wiper-control
of
the
CAT5127/CAT5129
¯¯
is
¯
accomplished with three input control pins, CS, U/D,
¯¯¯
¯¯¯
and INC. The INC input increments the wiper in the
direction which is determined by the logic state of the
¯
¯¯
U/D input. The CS input is used to select the device
and also store the wiper position prior to power down.
For Ordering Information details, see page 12.
The devices are used as two-terminal variable
resistors. DPPs bring variability and programmability
to a wide variety of applications including control,
parameter adjustments, and signal processing.
FUNCTIONAL DIAGRAM
CAT5127
CAT5129
V
V
CC
CC
R
P
R
H
(U/D)
R
R
H
(U/D)
(INC)
(CS)
Control
and
(INC)
(CS)
Memory
Control
and
Memory
POR
GND
L
POR
GND
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. MD-2127 Rev. C
CAT5127, CAT5129
PIN CONFIGURATION
PIN DESCRIPTIONS
MSOP/TDFN
CAT5127 CAT5129
MSOP/TDFN SOT23
Name Function
CAT5127
¯¯¯
INC
1
2
3
4
8
7
6
5
VCC
¯¯¯
INC
Increment Control
Up/Down Control
1
2
4
3
¯
U/D
¯¯
CS
¯
U/D
RH
RL
Potentiometer High
Terminal
RH
3
5
GND
NC
GND Ground
4
5
2
-
TSOT23-6
NC No Connect
CAT5129
Potentiometer Low
Terminal
¯¯
CS
1
2
3
6
5
4
VCC
RH
RL
6
-
GND
¯¯
CS
Chip Select
7
8
1
6
¯
U/D
¯¯¯
INC
VCC Supply Voltage
DEVICE DESCRIPTION
¯¯¯
INC: Increment Control Input
RL: Low End Potentiometer Terminal (CAT5127 only)
¯¯¯
The INC input moves the wiper in the up or down
RL is the low end terminal of the potentiometer. It is
not required that this terminal be connected to a
potential less than the RH terminal. Voltage applied to
the RL terminal cannot exceed the supply voltage, VCC
or go below ground, GND. RL and RH are electrically
interchangeable.
¯
direction determined by the condition of the U/D input.
¯
U/D: Up/Down Control Input
¯
The U/D input controls the direction of the wiper
¯¯
movement. When in a high state and CS is low, any
¯¯¯
high-to-low transition on INC will cause the wiper to
¯¯
CS: Chip Select
move one increment toward the RH terminal. When in
¯¯
a low state and CS is low, any high-to-low transition
The chip select input is used to activate the control
input of the device and is active low. When in a high
¯¯¯
on INC will cause the wiper to move one increment
¯¯¯
¯
towards the RL terminal.
state, activity on the INC and U/D inputs will not affect
or change the position of the wiper. CAT5127 has an
¯¯
RH: High End Potentiometer Terminal
internal pull-up resistor on the CS input pin.
RH is the high end terminal of the potentiometer. It is
not required that this terminal be connected to a
potential greater than the RL terminal. Voltage applied
to the RH terminal cannot exceed the supply voltage,
VCC or go below ground, GND.
VCC: Supply Input for the device.
Doc. No. MD-2127 Rev. C
2
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5127, CAT5129
DEVICE OPERATION
¯¯
With CS set LOW, the device is selected and will
The CAT5127 operates like a digitally controlled
variable resistor with RH and RL equivalent to the high
and low terminals. There are 32 available tap posi-
tions including the resistor end points, RH and RL.
There are 31 resistor elements connected in series
between the RH and RL terminals.
¯
¯¯¯
respond to the U/D and INC inputs. HIGH to LOW
¯¯¯
transitions on INC wil increment or decrement the
¯
wiper (depending on the state of the U/D input and
five-bit counter). The wiper, when at either end
terminal, acts like its mechanical equivalent and does
not move beyond the last position. The value of the
¯¯
The CAT5129 operates like a digitally controlled
variable resistor with RH equivalent to the high
terminal. There are 32 available tap positions
including the resistor end points, RH and GND. There
are 31 resistor elements connected in series between
the RH and GND terminals.
counter is stored in nonvolatile memory whenever CS
¯¯¯
transitions HIGH while the INC input is also HIGH.
When the device is powered-down, the last stored
wiper counter position is maintained in the nonvolatile
memory. When power is restored, the contents of the
memory are recalled and the counter is set to the
value stored.
¯¯¯
¯
Operation is controlled by three inputs, INC, U/D and
¯¯
¯¯¯
CS. These inputs control a five-bit up/down counter
With INC set low, the device may be de-selected and
whose output is decoded to select the wiper position.
The selected wiper position can be stored in
powered down without storing the current wiper
position in nonvolatile memory. This allows the system
to always power up to a preset value stored in
nonvolatile memory.
¯¯¯
¯¯
nonvolatile memory using the INC and CS inputs.
OPERATION MODES
¯¯¯
INC
¯¯
CS
¯
U/D
Operation
High to Low
High to Low
High
Low
Low
High
Low
X
Wiper toward H
Wiper toward L/GND
Store Wiper Position
No Store, Return to Standby
Standby
Low to High
Low to High
High
Low
X
X
X
R
H
C
H
C
L
R /GND
L
Variable Resistor Equivalent Circuit
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
3
Doc. No. MD-2127 Rev. C
CAT5127, CAT5129
ABSOLUTE MAXIMUM RATINGS(1)
Parameters
Supply Voltage
VCC to GND
Inputs
Ratings
Units
V
Parameters
Ratings
Units
Operating Ambient Temperature
Commercial (‘C’ or Blank suffix)
Industrial (‘I’ suffix)
-0.5 to +7V
0 to 70
-40 to +85
+150
ºC
ºC
ºC
ºC
ºC
¯¯
-0.5 to VCC +0.5
-0.5 to VCC +0.5
-0.5 to VCC +0.5
-0.5 to VCC +0.5
-0.5 to VCC +0.5
-0.5 to VCC +0.5
V
V
V
V
V
V
Junction Temperature
Storage Temperature
CS to GND
¯¯¯
INC to GND
-65 to 150
+300
¯
Lead Soldering (10 sec max)
U/D to GND
H to GND
L to GND
W to GND
RELIABILITY CHARACTERISTICS
Symbol Parameter
Test Method
Min
2000
Typ
Max
Units
V
(2)
VZAP
ESD Susceptibility MIL-STD-883, Test Method 3015
(2) (3)
ILTH
TDR
NEND
Latch-Up
JEDEC Standard 17
100
mA
Data Retention
Endurance
MIL-STD-883, Test Method 1008
MIL-STD-883, Test Method 1003
100
Years
Stores
1,000,000
Notes:
(1) Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this
specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability.
(2) This parameter is tested initially and after a design or process change that affects the parameter.
(3) Latch-up protection is provided for stresses up to 100mA on address and data pins from -1V to VCC + 1V
(4) These parameters are periodically sampled and are not 100% tested.
Doc. No. MD-2127 Rev. C
4
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5127, CAT5129
DC ELECTRICAL CHARACTERISTICS
VCC = +2.5V to +5.5V unless otherwise specified
Power Supply
Symbol Parameter
VCC Operating Voltage Range
Conditions
Min
Typ
Max
5.5
Units
V
2.5
VCC = 5.5V, f = 1MHz, IW = 0
VCC = 3.3V, f = 1MHz, IW = 0
VCC = 5.5V, f = 1MHz, IW = 0
260
150
160
50
µA
µA
µA
µA
µA
µA
CAT5127
Supply Current (Increment)
ICC1
CAT5129
Supply Current (Increment)
VCC = 3.3V, f = 1MHz, IW = 0
Programming, VCC = 5.5V
Programming, VCC = 3.3V
300
150
600
400
ICC2
Supply Current (Write)
¯¯
CS = VCC - 0.3V
¯ ¯¯¯
U/D, INC = VCC or GND
(1)
ISB1
Supply Current (Standby)
0.35
1
µA
Logic Inputs
Symbol Parameter
Conditions
Min
Typ
Max
Units
µA
µA
µA
µA
µA
µA
V
¯ ¯¯¯
U/D, INC = VCC
1
CAT5127 Input Leakage Current
CAT5129 Input Leakage Current
IIH
¯¯
1
CS = VCC-0.3V
VIN = VCC
1
-1
¯ ¯¯¯
U/D, INC = 0
CAT5127 Input Leakage Current
IIL
¯¯
CS = 0
-120
-1
CAT5129 Input Leakage Current
CMOS High Level Input Voltage
CMOS Low Level Input Voltage
VIN = 0V
VIH2
VIL2
VCC x 0.7
-0.3
VCC + 0.3
2.5V ≤ VCC ≤ 5.5V
V
CC x 0.2
V
CAT5129 TTL High Level Input
Voltage
VIH1
VIL1
2
0
VCC
V
V
3.6V ≤ VCC ≤ 5.5V
CAT5129 TTL Low Level Input
Voltage
0.8
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5
Doc. No. MD-2127 Rev. C
CAT5127, CAT5129
POTENTIOMETER CHARACTERISTICS
Symbol
Parameter
Conditions
-10 Device
-50 Device
-00 Device
Min
Typ
10
Max
Units
RPOT
Potentiometer Resistance
kΩ
50
100
RTOL
VRH
Pot Resistance Tolerance
Voltage on RH pin
± 20
VCC
VCC
%
V
0
0
VRL
Voltage on RL pin
V
RES
INL
Resolution
3.2
0.5
%
Integral Linearity Error
Differential Linearity Error
1
LSB
LSB
Ω
DNL
0.25
70
0.5
100
200
VCC = 5V
RWi
Wiper Resistance
VCC = 2.5V
150
±30
±3
Ω
(3)
TCRPOT
TCRATIO
TC of Pot Resistance
Ratiometric TC
±300 ppm/ºC
(3)
20
ppm/ºC
nV/√Hz
pF
(3)
VN
Noise
100kHz / 1kHz
8/24
8/8/25
1.7
(3)
CH/CL/CW
Fc (3)
Potentiometer Capacitances
Frequency Response
Passive Attenuator, 10kΩ
MHz
Notes:
(1) Latch-up protection is provided for stresses up to 100mA on address and data pins from -1V to VCC + 1V
(2) W = source or sink
(3) These parameters are periodically sampled and are not 100% tested.
I
Doc. No. MD-2127 Rev. C
6
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5127, CAT5129
AC TEST CONDITIONS
VCC Range
2.5V ≤ VCC ≤ 5.5V
0.2VCC to 0.7VCC
10ns
Input Pulse Levels
Input Rise and Fall Times
Input Reference Levels
0.5VCC
AC OPERATING CHARACTERISTICS
VCC = +2.5V to +5.5V, VH = VCC, VL = 0V, unless otherwise specified
Symbol Parameter
Min
Typ(1)
Max
Units
ns
¯¯
¯¯¯
tCI
tDI
100
50
CS to INC Setup
¯
¯¯¯
ns
U/D to INC Setup
¯
¯¯¯
tID
100
250
250
1
ns
U/D to INC Hold
¯¯¯
tIL
ns
INC LOW Period
¯¯¯
tIH
ns
INC HIGH Period
¯¯¯
tIC
µs
INC Inactive to CS Inactive
¯¯
tCPH
tCPH
tIR
100
10
ns
CS Deselect Time (NO STORE)
¯¯
ms
µs
CS Deselect Time (STORE)
¯¯¯
1
2
5
INC to RH Change
¯¯¯
tCYC
1
µs
INC Cycle Time
(2)
¯¯¯
tR, tF
500
1
µs
INC Input Rise and Fall Time
(2)
tPU
tWR
Power-up to Wiper Stable
Store Cycle
ms
ms
5
A.C. TIMING
CS
(store)
tCYC
tIC
tCPH
tCI
tIL
tIH
90%
90%
INC
U/D
10%
tDI
tID
tF
tR
(3)
tIR
MI
R
H
Notes:
(1) Typical values are for TA = 25ºC and nominal supply voltage.
(2) This parameter is periodically sampled and not 100% tested.
(3) MI in the A.C. Timing diagram refers to the minimum incremental change in the W output due to a change in the wiper position.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
7
Doc. No. MD-2127 Rev. C
CAT5127, CAT5129
APPLICATION INFORMATION
Potentiometer Configurations
(a) resistive divider
(b) variable resistance
(c) two-port
Applications
A
3
2
1
R
R
+5V
+
–
3
V
(-)
4
1
1
+5V
8
2
R
R
R
R
A
1
6
1
7
+5V
+5V
A
3
DPP
9
4
}
}
pR
POT
–
+
8
R
2
2
1
7
V
4
8
O
8
R
4
(1-p)R
POT
1
R
10
11
2
3
7
6
3
5
B
CAT5127
2
4
555
6
5
R
3
R
A
4
2
–
+
CAT5127
+2.5V
7
V
2
(+)
2
1
C
0.01µF
0.01µF
0.003µF
Programmable Instrumentation Amplifier
Programmable Sq. Wave Oscillator (555)
+5V
8
100kꢀ
2
CAT5127
1
7
V
V
(REG)
OUT
O
4
0.1µF
R
2952
1
6.8µF
V
(UNREG)
pR (1-p)R
11kꢀ
IN
330
330
1M
1.23V
SD
GND
FB
SHUTDOWN
6
3
1µF
+5V
+5V
7
R
2
2
3
+5V
8
2
820
–
+
–
+
7
4
2
3
6
6
V
O
A1
4
A2
3
I
S
1
7
R
3
10k
LT1097
+2.5V
CAT5127
6
4
Programmable Voltage Regulator
Programmable I to V convertor
Doc. No. MD-2127 Rev. C
8
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5127, CAT5129
PACKAGE OUTLINE DRAWING
MSOP 8-Lead 3.0 x 3.0mm (Z)
SYMBOL
MIN
NOM
MAX
1.10
0.15
0.95
0.38
0.23
3.10
5.00
3.10
A
A1
A2
b
0.05
0.75
0.22
0.13
2.90
4.80
2.90
0.10
0.85
c
D
3.00
4.90
3.00
E
E
E1
E1
e
0.65 BSC
0.60
L
0.40
0º
0.80
6º
L1
L2
θ
0.95 REF
0.25 BSC
TOP VIEW
D
A2
A
DETAIL A
A1
e
b
c
SIDE VIEW
END VIEW
θ
L2
L
L1
DETAIL A
For current Tape and Reel information, download the PDF file from:
http://www.catsemi.com/documents/tapeandreel.pdf.
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC Specification MO-187.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
9
Doc. No. MD-2127 Rev. C
CAT5127, CAT5129
TDFN 8-Lead 2.5 x 2.0mm
PIN#1
IDENTIFICATION
SYMBOL
MIN
NOM
0.75
MAX
0.80
0.05
A
A1
A3
b
0.70
0.00
0.02
0.20 REF
0.25
0.20
1.90
1.40
2.40
1.20
0.30
2.10
1.60
2.60
1.40
D
2.00
D2
E
1.50
2.50
E2
e
1.30
0.50TYP
0.30
L
0.20
0.40
A1
A3
For current Tape and Reel information, download the PDF file from:
http://www.catsemi.com/documents/tapeandreel.pdf.
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC specification MO-229.
Doc. No. MD-2127 Rev. C
10
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5127, CAT5129
TSOT-23 6-Lead (TD)
SYMBOL
MIN
NOM
MAX
1.00
0.10
0.90
0.45
0.20
D
A
A1
A2
b
e
0.01
0.80
0.30
0.12
0.05
0.87
c
0.15
D
2.90 BSC
2.80 BSC
1.60 BSC
0.95TYP
0.40
E1
E
E
E1
e
L
0.30
0º
0.50
8º
L1
L2
θ
0.60 REF
0.25 BSC
TOP VIEW
A2 A
A1
θ
L
b
c
L2
L1
SIDE VIEW
END VIEW
For current Tape and Reel information, download the PDF file from:
http://www.catsemi.com/documents/tapeandreel.pdf.
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC specification MO-193.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
11
Doc. No. MD-2127 Rev. C
CAT5127, CAT5129
EXAMPLE OF ORDERING INFORMATION
Prefix
Device #
Suffix
CAT
5127
Z
I
-10
–
G
T3
Temperature Range
I = Industrial (-40ºC to 85ºC)
Tape & Reel
T: Tape & Reel
3: 3000/Reel
Company ID
Product Number
5127
Resistance
-10: 10k ohms
-50: 50k ohms
-00: 100k ohms
Lead Finish
Blank: Matte-Tin
G: NiPdAu
5129
Package
Z: MSOP
TD: TSOT23
ZD7: TDFN
ORDERING INFORMATION
Device
Ordering Part Number
Resistor [kꢀ]
Top Marking
ABPU
ABPV
Pin/Package
MSOP-8
MSOP-8
MSOP-8
MSOP-8
MSOP-8
MSOP-8
TDFN-8
Part Per Reel
3000
CAT5127
CAT5127ZI-10-T3
CAT5127ZI-50-T3(5)
CAT5127ZI-00-T3(5)
CAT5127ZI-10-GT3
CAT5127ZI-50-GT3(5)
CAT5127ZI-00-GT3(5)
CAT5127ZD7I-10-GT3
CAT5127ZD7I-50-GT3(5)
CAT5127ZD7I-00-GT3(5)
CAT5129TDI-10-T3
CAT5129TDI-50-T3(5)
CAT5129TDI-00-T3(5)
CAT5129TDI-10-GT3
CAT5129TDI-50-GT3(5)
CAT5129TDI-00-GT3(5)
10
50
3000
100
10
ABPY
3000
ABNA
ABNB
ABNK
HB
3000
50
3000
100
10
3000
3000
50
HC
TDFN-8
3000
100
10
HD
TDFN-8
3000
CAT5129
SWym(6)
SXym(6)
SYym(6)
SJym(6)
SUym(6)
SVym(6)
TSOT23-6
TSOT23-6
TSOT23-6
TSOT23-6
TSOT23-6
TSOT23-6
3000
50
3000
100
10
3000
3000
50
3000
100
3000
Notes:
(1) All packages are RoHS-compliant (Lead-free, Halogen-free).
(2) The standard lead finish is NiPdAu.
(3) The device used in the above example is a CAT5127ZI-10-GT3 (MSOP, Industrial Temperature range, 10kꢀ, NiPdAu, Tape & Reel).
(4) For additional package and temperature options, please contact your nearest Catalyst Semiconductor Sales office.
(5) Contact factory for availability.
(6) y = Production year (digit), m = Production month (digit).
Doc. No. MD-2127 Rev. C
12
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
REVISION HISTORY
Date
Rev. Reason
12/18/06
A
Initial Issue
Updated the Functional Diagram
Updated the DC Electrical Characteristics table
02/23/07
08/03/07
B
Updated Package Outline Drawing
Updated Ordering Information
C
Copyrights, Trademarks and Patents
© Catalyst Semiconductor, Inc.
Trademarks and registered trademarks of Catalyst Semiconductor include each of the following:
Beyond Memory™, DPP™, EZDim™, LDD™, MiniPot™ and Quad-Mode™
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RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING
OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES.
Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where
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Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled
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Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical
semiconductor applications and may not be complete.
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Document No: MD-2127
Revision:
C
Issue date:
08/03/07
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