CAT5132ZI-10 Datasheet, PDF (2/12 Pages) ON Semiconductor – 16 Volt Digital Potentiometer (POT) with 128 Taps and I2C Interface

CAT5132
V_CC
V+
SDA
SCL
A0
CONTROL LOGIC AND
ADDRESS DECODE
127
R_H
A1
128 TAP POSITION
DECODE CONTROL
7−BIT
NONVOLATILE
MEMORY
REGISTER
(DR)
7−BIT WIPER
CONTROL
REGISTER
(WCR)
0
R_L
Figure 1. Block Diagram
R_W
Table 1. PIN FUNCTION DESCRIPTION
Pin No. Pin Name
Description
1
SDA
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.
2
GND
Ground
3
V_CC
Digital Supply Voltage (2.7 V to 5.5 V)
4
A1
Address Select Input to select slave address for I²C bus.
5
A0
Address Select Input to select slave address for I²C bus.
6
R_H
High Reference Terminal for the potentiometer
7
R_W
Wiper Terminal for the potentiometer
8
R_L
Low Reference Terminal for the potentiometer
9
V+
Analog Supply Voltage for the potentiometer (+8.0 V to 16.0 V)
10
SCL
Serial Bus Clock input for the I²C Serial Bus. This clock is used to clock all data transfers into and out of
the CAT5132
Table 2. ABSOLUTE MAXIMUM RATINGS
Rating
Value
Unit
Temperature Under Bias
−55 to +125
C
Storage Temperature
−65 to +150
C
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
−0.3 to V_CC + 0.3
V
V+
−0.3 to +6
V
−0.3 to +16.5
V
Wiper Current (10 sec)
6
mA
Lead Soldering temperature (10 sec)
+300
C
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
Unit
+2.7 to +5.5
V
+8.0 to +16
V
−40 to +85
C
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