CAT5126 查看數據表（PDF） - ON Semiconductor
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CAT5126 Datasheet PDF : 11 Pages
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CAT5126
One-Time Digitally Programmable 32-Tap Potentiometer
FEATURES
Wiper position stored after one-time non-
volatile programming
User-defined Power-On wiper position
32-tap positions
Wiper position programmed through simple
2-wire serial interface
Low 0.35 µA (typ) static supply current
2.5 V to 5.5 V single-supply operation
10 kΩ, 50 kΩ, and 100 kΩ end-to-end
resistances
50 ppm/°C end-to-end temperature coefficient
and 5 ppm/°C ratiometric temperature
coefficient
TDFN 8-pad (2 x 3 mm) and MSOP 8-lead packages
APPLICATIONS
Mechanical potentiometer replacement
Products using one-time factory calibration
Contrast, brightness, volume controls
Programmable analog functions
DESCRIPTION
The CAT5126 is a digital programmable
potentiometer. The wiper position is controlled with a
simple 2-wire digital interface. This digital
potentiometer is unique in that it has an optional one-
time programmable feature that either sets the wiper’s
position upon power-on to a user-defined value, or the
wiper can be set and the interface also disabled to
prevent further adjustment.
The CAT5126 has an end-to-end resistance of 10 kΩ,
50 kΩ, and 100 kΩ. All CAT5126 devices have
32-wiper positions and operate from a single 2.5 V to
5.5 V supply.
The CAT5126 is available in TDFN 8-pad and MSOP
8-lead packages. Each device is guaranteed over the
industrial temperature range of -40°C to +85°C.
For Ordering Information details, see page 10.
PIN CONFIGURATION
MSOP (Z)
(top view)
RW 1
8 RH
¯C¯S¯ 2 CAT 7 RL
VDD 3 5126 6 U/D¯
GND 4
5 VPP
TDFN (VP2)
(top view)
RW 1
¯C¯S¯ 2
VDD 3
GND 4
8 RH
7 RL
6 U/D¯
5 VPP
FUNCTIONAL DIAGRAM
VDD 3
GND
4
2
CS
U/D 6
UP/DOWN
COUNTER
32-POSITION
DECODER
RH
8
R31
R30
ONE-TIME
5
VPP
PROGRAM
BLOCK
R2
R1
7
RL
RW 1
RW
© 2009 SCILLC. All rights reserved.
1
Characteristics subject to change without notice
Doc. No. MD-2129 Rev. D
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