CAT5132
16 Volt Digital
Potentiometer (POT)
with 128 Taps
and I
2
C Interface
Description
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The CAT5132 is a high voltage digital POT with non-volatile wiper
setting memory, operating like a mechanical potentiometer. The tap
points between the 127 equal resistive elements are connected to the
wiper output via CMOS switches. The switches are controlled by a
7-bit Wiper Control Register (WCR). The wiper setting can be stored
in a 7-bit non-volatile Data Register (DR). The WCR is accessed via
the I
2
C serial bus.
Upon power-up, the WCR is set to mid-scale (1000000). After the
power supply is stable, the contents of the DR are transferred to the
WCR and the wiper is returned to the memorized setting.
The CAT5132 has two voltage supplies: V
CC
, the digital supply and
V+, the analog supply. V+ can be much higher than V
CC
, allowing for
16 V analog operations.
The CAT5132 can be used as a potentiometer or as a two-terminal
variable resistor.
Features
MSOP−10
Z SUFFIX
CASE 846AE
MARKING DIAGRAM
ANBx
YMR
Single Linear Digital Potentiometer with 128 Taps
End-to-end Resistance of 10 kW, 50 kW or 100 kW
I
2
C Interface
Fast Up/Down Wiper Control Mode
Non-volatile Wiper Setting Storage
Automatic Wiper Setting Recall at Power−up
Digital Supply Range (V
CC
): 2.7 V to 5.5 V
Analog Supply Range (V+): +8 V to +16 V
Low Standby Current: 15
mA
100 Year Wiper Setting Memory
Industrial Temperature Range:
−40C
to +85C
10-pin MSOP Package
These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS
Compliant
LCD Screen Adjustment
Volume Control
Mechanical Potentiometer Replacement
Gain Adjustment
Line Impedance Matching
VCOM Setting Adjustments
ANBU = CAT5132ZI-10-GT3
ANBK = CAT5132ZI-50-GT3
ANBP = CAT5132ZI-00-GT3
Y = Production Year (Last Digit)
M = Production Month (1-9, A, B, C)
R = Production Revision
PIN CONFIGURATION
SDA
GND
V
CC
A1
A0
(Top View)
1
SCL
V+
R
L
R
W
R
H
ORDERING INFORMATION
Device
CAT5132ZI−10−GT3
CAT5132ZI−50−GT3
CAT5132ZI−00−GT3
MSOP
(Pb−Free)
3,000 /
Tape & Reel
Package
Shipping
†
Applications
†For information on tape and reel specifications, in-
cluding part orientation and tape sizes, please refer
to our Tape and Reel Packaging Specifications Bro-
chure, BRD8011/D.
1. For detailed information and a breakdown of
device nomenclature and numbering systems,
please see the ON Semiconductor Device No-
menclature document, TND310/D, available at
www.onsemi.com.
2. The standard lead finish is NiPdAu.
3. For additional package and temperature options,
please contact your nearest ON Semiconductor
Sales office.
1
Publication Order Number:
CAT5132/D
Semiconductor Components Industries, LLC, 2013
July, 2013
−
Rev. 7
CAT5132
V
CC
SDA
SCL
A0
A1
128 TAP POSITION
DECODE CONTROL
7−BIT
NONVOLATILE
MEMORY
REGISTER
(DR)
7−BIT WIPER
CONTROL
REGISTER
(WCR)
0
CONTROL LOGIC AND
ADDRESS DECODE
127 RESISTIVE
ELEMENTS
V+
127
R
H
R
L
R
W
Figure 1. Block Diagram
Table 1. PIN FUNCTION DESCRIPTION
Pin No.
1
2
3
4
5
6
7
8
9
10
Pin Name
SDA
GND
V
CC
A1
A0
R
H
R
W
R
L
V+
SCL
Description
Serial Data Input/Output
−
Bidirectional Serial Data pin used to transfer data into and out of the CAT5132.
This is an Open-Drain I/O and can be wire OR’d with other Open-Drain (or Open Collector) I/Os.
Ground
Digital Supply Voltage (2.7 V to 5.5 V)
Address Select Input to select slave address for I
2
C bus.
Address Select Input to select slave address for I
2
C bus.
High Reference Terminal for the potentiometer
Wiper Terminal for the potentiometer
Low Reference Terminal for the potentiometer
Analog Supply Voltage for the potentiometer (+8.0 V to 16.0 V)
Serial Bus Clock input for the I
2
C Serial Bus. This clock is used to clock all data transfers into and out of
the CAT5132
Table 2. ABSOLUTE MAXIMUM RATINGS
Rating
Temperature Under Bias
Storage Temperature
Voltage on any SDA, SCL, A0 & A1 pins with respect to Ground (Note 4)
Voltage on R
H
, R
L
& R
W
pins with respect to Ground
V
CC
with respect to Ground
V+ with respect to Ground
Wiper Current (10 sec)
Lead Soldering temperature (10 sec)
Value
−55
to +125
−65
to +150
−0.3
to V
CC
+ 0.3
V+
−0.3
to +6
−0.3
to +16.5
6
+300
V
V
mA
C
Unit
C
C
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
4. Latch-up protection is provided for stresses up to 100 mA on address and data pins from
−0.3
V to V
CC
+0.3 V.
Table 3. RECOMMENDED OPERATING CONDITIONS
Rating
V
CC
V+
Operating Temperature Range
Value
+2.7 to +5.5
+8.0 to +16
−40
to +85
Unit
V
V
C
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2
CAT5132
Table 4. POTENTIOMETER CHARACTERISTICS
(Over recommended operating conditions unless otherwise stated.)
Limits
Symbol
R
POT
R
POT
R
POT
R
TOL
I
W
R
W
V
TERM
RES
A
LIN
R
LIN
TC
RPOT
TC
Ratio
fc
Parameter
Potentiometer Resistance (100 kW)
Potentiometer Resistance (50 kW)
Potentiometer Resistance (10 kW)
Potentiometer Resistance Tolerance
Power Rating
Wiper Current
Wiper Resistance
I
W
=
1
mA @ V+ = 12 V
I
W
=
1
mA @ V+ = 8 V
Voltage on R
W
, R
H
or R
L
Resolution
Absolute Linearity (Note 6)
Relative Linearity (Note 7)
Temperature Coefficient of R
POT
Ratiometric Temperature Coefficient
V
W(n)(actual)
−
V
W(n)(expected)
(Notes 9, 10)
V
W(n+1)
−
[V
W(n)
+ LSB] (Notes 9, 10)
(Note 5)
(Note 5)
(Note 5)
R
POT
= 50 kW
10/10/25
0.4
300
30
GND = 0 V; V+ = 8 V to 16 V
GND
0.78
1
0.5
70
110
25C
Test Conditions
Min
Typ
100
50
10
20
50
3
150
200
V+
Max
Units
kW
kW
kW
%
mW
mA
W
W
V
%
LSB
(Note 8)
LSB
(Note 8)
ppm/C
ppm/C
pF
MHz
C
H
/C
L
/C
W
Potentiometer Capacitances
Frequency Response
5. This parameter is tested initially and after a design or process change that affects the parameter.
6. Absolute linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as a
potentiometer.
7. Relative linearity is utilized to determine the actual change in voltage between two successive tap positions when used as a potentiometer.
8. LSB = (R
HM
−
R
LM
)/127; where R
HM
and R
LM
are the highest and lowest measured values on the wiper terminal.
9. n = 1, 2, ..., 127
10. V
+
@ R
H
; 0 V @ R
L
; V
W
measured @ R
W
with no load.
Table 5. D.C. ELECTRICAL CHARACTERISTICS
(Over recommended operating conditions unless otherwise stated.)
Symbol
I
CC1
I
CC2
I
SB(VCC)
I
SB(V+)
I
LI
I
LO
V
IL
V
IH
V
OL1
Parameter
Power Supply Current
(Volatile Write/Read)
Power Supply Current
(Nonvolatile WRITE)
Standby Current (V
CC
= 5 V)
V+ Standby Current
Input Leakage Current
Output Leakage Current
Input Low Voltage
Input High Voltage
Output Low Voltage (V
CC
= 3.0)
I
OL
= 3 mA
Test Conditions
F
SCL
= 400 kHz, SDA Open,
V
CC
= 5.5 V, Input = GND
F
SCL
= 400 kHz, SDA Open,
V
CC
= 5.5 V, Input = GND
V
IN
= GND or V
CC
, SDA = V
CC
V
CC
= 5 V, V+ = 16 V
V
IN
= GND to V
CC
V
OUT
= GND to V
CC
−1
V
CC
x 0.7
Min
Max
1
3.0
5
10
10
10
V
CC
x 0.3
V
CC
+ 1.0
0.4
Units
mA
mA
mA
mA
mA
mA
V
V
V
Table 6. CAPACITANCE
(T
A
= 25C, f = 1.0 MHz, V
CC
= 5.0 V)
Symbol
C
I/O
C
IN
Parameter
Input/Output Capacitance (SDA)
Input Capacitance (A0, A1, SCL)
Test Conditions
V
I/O
= 0 V (Note 11)
V
IN
= 0 V (Note 11)
Min
Max
8
6
Units
pF
pF
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CAT5132
Table 7. A.C. CHARACTERISTICS
V
CC
= 2.7
−
5.5 V
Symbol
F
SCL
T
I
(Note 11)
t
AA
t
HD:STA
t
LOW
t
HIGH
t
SU:STA
t
HD:DAT
t
R
(Note 11)
t
F
(Note 11)
t
SU:STO
t
DH
Clock Frequency
Noise Suppression Time Constant at SCL & SDA Inputs
SLC Low to SDA Data Out and ACK Out
1.2
0.6
1.2
0.6
0.6
0
0.3
300
0.6
100
Parameter
(see Figure 6)
Min
Max
400
50
1
Units
kHz
ns
ms
ms
ms
ms
ms
ms
ns
ms
ns
ms
ns
t
BUF
(Note 11) Time the bus must be free before a new transmission can start
Start Condition Hold Time
Clock Low Period
Clock High Period
Start Condition Setup Time (for a Repeated Start Condition)
Data in Hold Time
SDA and SCL Rise Time
SDA and SCL Fall Time
Stop Conditions Setup Time
Data Out Hold Time
11. This parameter is tested initially and after a design or process change that affects the parameter.
Table 8. POWER UP TIMING
(Notes 12, 13)
Symbol
t
PUR
t
PUW
Power-up to Read Operation
Power-up to Write Operation
Parameter
Min
Max
1
1
Units
ms
ms
Table 9. WIPER TIMING
Symbol
t
WRPO
t
WRL
Parameter
Wiper Response Time After Power Supply Stable
Wiper Response Time After Instruction Issued
Min
5
5
Max
10
10
Units
ms
ms
Table 10. WRITE CYCLE LIMITS
Symbol
t
WR
Write Cycle Time (see Figure 7)
Parameter
Min
Max
5
Units
ms
The write cycle is the time from a valid stop condition of a write sequence to the end of the internal program/erase cycle. During the write
cycle, the bus interface circuits are disabled, SDA is allowed to remain high and the device does not respond to its slave address.
Table 11. RELIABILITY CHARACTERISTICS
Symbol
N
END
(Note 12)
T
DR
(Note 12)
Parameter
Endurance
Data Retention
Reference Test Method
MIL−STD−883, Test Method 1033
MIL−STD−883, Test Method 1008
Min
100,000
100
Max
Units
Cycles
Years
12. This parameter is tested initially and after a design or process change that affects the parameter.
13. t
PUR
and t
PUW
are the delays required from the time VCC is stable until the specified operation can be initiated.
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4
CAT5132
TYPICAL PERFORMANCE CHARACTERISTICS
12
10
8
R
WL
(KW)
6
4
2
0
I
CC
2 (mA)
V
CC
= 2.7 V; V+ = 8 V
V
CC
= 5.5 V; V+ = 16 V
400
350
300
250
200
150
100
50
0
16
32
48
64
80
96
112
128
0
−50 −30
−10
10
30
50
70
90
110 130
V
CC
= 2.7 V
V
CC
= 5.5 V
TAP POSITION
TEMPERATURE (C)
Figure 2. Resistance between R
W
and R
L
1.0
0.8
0.6
A
LIN
ERROR (LSB)
0.4
0.2
0
−0.2
−0.4
−0.6
−0.8
−1.0
V
CC
= 2.7 V; V+ = 8 V
V
CC
= 5.5 V; V+ = 16 V
0
16
32
48
64
80
96
112
128
T
amb
= 25C
R
total
= 10 K
A
LIN
ERROR (LSB)
0.5
0.4
0.3
0.2
0.1
0
−0.1
−0.2
−0.3
−0.4
−0.5
Figure 3. I
CC
2 (NV Write) vs. Temperature
T
amb
= 25C
R
total
= 10 K
V
CC
= 2.7 V; V+ = 8 V
V
CC
= 5.5 V; V+ = 16 V
0
16
32
48
64
80
96
112 128
TAP POSITION
TAP POSITION
Figure 4. Absolute Linearity Error per Tap
Position
Figure 5. Relative Linearity Error
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