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| CAT5273 Datasheet, PDF (2/14 Pages) ON Semiconductor – Dual 256‐position I2C Compatible Digital Potentiometers (POTs) | |||
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CAT5271, CAT5273
VCC
SCL
SDA
GND
Wiper Control
A1
Register 1
W1
B1
Wiper Control
A2
Register 2
W2
B2
Figure 1. CAT5271 Functional Block Diagram
VCC
Wiper Control
Register 1
W1
SCL
B1
SDA
Wiper Control
Register 2
W2
GND
Control Logic
B2
AD0
AD1
Figure 2. CAT5273 Functional Block Diagram
Table 1. PIN FUNCTION DESCRIPTION
CAT5271
Pin No.
Pin Name
Description
1
B1
B1 Terminal
2
A1
A1 Terminal
3
W2
W2 Terminal
4
GND
Digital Ground
5
VDD
Positive Power Supply
6
SCL
Serial Clock Input
7
SDA
Serial Data Input / Output
8
A2
A2 Terminal
9
B2
B2 Terminal
10
W1
W1 Terminal
Pin Name
B1
AD0
W2
GND
VDD
SCL
SDA
AD1
B2
W1
CAT5273
Description
B1 Terminal
Device Address Bit 0
W2 Terminal
Digital Ground
Positive Power Supply
Serial Clock Input
Serial Data Input / Output
Device Address Bit 1
B2 Terminal
W1 Terminal
Table 2. ABSOLUTE MAXIMUM RATINGS (Note 1)
Rating
Value
Unit
VDD to GND
A1, B1, W1, A2, B2, W2 Voltage to GND
IMAX
Digital Inputs and Output Voltage to GND
â0.3 to 6.5
V
VDD
ï±20
mA
0 to 6.5
V
Operating Temperature Range
â40 to +85
ï°C
Maximum Junction Temperature (TJMAX)
Storage Temperature
150
ï°C
â65 to +150
ï°C
Lead Temperature (Soldering, 10 sec)
300
ï°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.
1. Maximum terminal current is bounded by the maximum current handling of the switches, maximum power dissipation of the package, and
maximum applied voltage across any two of the A, B, and W terminals at a given resistance.
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