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| CAT5126_13 Datasheet, PDF (2/9 Pages) ON Semiconductor – One‐time Digital 32‐tap Potentiometer (POT) | |||
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VDD 3
GND
4
2
CS
U/D
6
5
VPP
CAT5126
RH 8
UP/DOWN
COUNTER
ONEâTIME
PROGRAM
BLOCK
R31
R30
32âPOSITION
DECODER
R2
R1
RW
1
RW
RL 7
Figure 1. Functional Diagram
Table 1. PIN DESCRIPTION
Pin
Name
Function
1
RW
Wiper Connection
2
CS
Chip-Select Input. A high-to-low CS transition determines the mode: increment if U/D is high, or decrement if
U/D is low. CS is also used for one-time programming (see the One-Time Programming section).
3
VDD
PowerâSupply Voltage
4
GND
Ground
5
VPP
Programming Voltage for One-Time Programming. Connect VPP to 10 V supply when one-time programming
the device. For normal operation, connect to ground or let float.
6
U/D
Up/Down Control Input. With CS low, a low-to-high transition increments or decrements the wiper position.
7
RL
Low Terminal of Resistor
8
RH
High Terminal of Resistor
Table 2. ABSOLUTE MAXIMUM RATINGS
Parameters
Ratings
Units
VDD to GND
VPP to GND
All other pins to GND
Maximum Continuous Current into H, L, and W
â0.5 to +7.0
V
â0.5 to +12.0
V
â0.5 to VDD +0.5
V
ï±1.5
mA
Continuous Power Dissipation (TA = +70ï°C)
MSOP 8-lead (derate 4.5 mW/ï°C above +70ï°C)
TDFN 8-pad (derate 24.4 mW/ï°C above +70ï°C)
mW
362
1951
Operating Temperature Range
â40 to +85
ï°C
Junction Temperature
+150
ï°C
Storage Temperature Range
â65 to +150
ï°C
Lead Temperature (soldering, 10 s)
+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.
http://onsemi.com
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