CAT5126(2007) Просмотр технического описания (PDF) - Catalyst Semiconductor => Onsemi

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CAT5126
(Rev.:2007)

One-Time Digitally Programmable 32 Tap Potentiometer

Catalyst Semiconductor => Onsemi 

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 0.35µA (typ) static supply current

„ 2.5V to 5.5V single-supply operation

„ 10kΩ, 50kΩ, and 100kΩ end-to-end resistances

„ 50ppm/°C end-to-end temperature coefficient

and 5ppm/°C ratiometric temperature

coefficient

„ 8-Pin TDFN (2mm x 3mm) and MSOP 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 10kΩ,

50kΩ, and 100kΩ. All CAT5126 devices have 32

wiper positions and operate from a single 2.5V to 5.5V

supply.

The CAT5126 is available in 8-pin TDFN and MSOP

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

CS 2

U/D 6

5

VPP

UP/DOWN

COUNTER

ONE-TIME

PROGRAM

BLOCK

RH

8

R31

R30

32-POSITION

DECODER

R2

R1

7

RL

RW 1

RW

© 2007 Catalyst Semiconductor, Inc.

1

Characteristics subject to change without notice

Doc. No. 2129 Rev. A

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