CAT5140_13 Datasheet, PDF (2/10 Pages) ON Semiconductor – Single Channel 256 Tap Digital Potentiometer (POT)

CAT5140
Table 1. ORDERING INFORMATION
Part Number
Resistance
Temperature Range
Package
Shipping^†
CAT5140ZI−50−GT3
CAT5140ZI−00−GT3
50 kW
100 kW
−40C to 85C
MSOP−8 3x3
(Pb-Free)
3000/Tape & Reel
3000/Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
1. For detailed information and a breakdown of device nomenclature and numbering systems, please see the ON Semiconductor Device
Nomenclature document, TND310/D, available at www.onsemi.com.
Table 2. PIN FUNCTION DESCRIPTION
Pin No.
Pin Name
1
WP
Memory Write Protect: Active Low
2
SCL
Serial Clock
3
SDA
Serial Data
4
GND
Ground
5
R_W
Wiper Terminal
6
R_L
Potentiometer Low Terminal
7
R_H
Potentiometer High Terminal
8
V_CC
Supply Voltage
Description
WP: Write Protect Input
The WP pin when tied low prevents any write operations
within the device.
SCL: Serial Clock
The CAT5140 serial clock input pin is used to clock all
data transfers into or out of the device.
SDA: Serial Data
The CAT5140 bidirectional serial data pin is used to
transfer data into and out of the device. The SDA pin is an
open drain output and can be wire-Ored with the other open
drain or open collector I/Os.
R_H, R_L: Resistor End Points
The set of R_H and R_L pins is equivalent to the terminal
connections on a mechanical potentiometer.
R_W: Wiper
The R_W pin is equivalent to the wiper terminal of a
mechanical potentiometer and its position is controlled by
the WR register.
Table 3. ABSOLUTE MAXIMUM RATINGS
Parameter
Rating
Unit
V_IN Supply Voltage V_CC to Ground (Note 2)
Terminal voltages: R_H, R_L, R_W , SDA, SCL, WP
Wiper Current
Storage Temperature Range
Junction Temperature Range
Lead Soldering Temperature (10 seconds)
−0.5 to +7
V
−0.5 to V_CC + 0.5
V
6.0
mA
−65 to +150
C
−40 to +150
C
300
C
ESD Rating HBM (Human Body Model)
2000
V
ESD Rating MM (Machine Model)
200
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.
2. The minimum DC input voltage is –0.5 V. During transitions, inputs may undershoot to –2.0 V for periods of less than 20 ns. Maximum DC
voltage on output pins is V_CC +0.5 V, which may overshoot to V_CC +2.0 V for periods of less than 20 ns.
Table 4. RECOMMENDED OPERATING CONDITIONS
Parameter
V_CC
Wiper Current
Temperature Range
Rating
Unit
2.5 to 5.5
V
3
mA
−40 to +85
_C
http://onsemi.com
2