CAT5132GZ-100TE13 CATALYST [Catalyst Semiconductor], CAT5132GZ-100TE13 Datasheet

CAT5132GZ-100TE13

Manufacturer Part Number

CAT5132GZ-100TE13

Description

15 Volt Digitally Programmable Potentiometer (DPP) with 128 Taps and 2-wire Interface

Manufacturer

CATALYST [Catalyst Semiconductor]

Datasheet

1.CAT5132GZ-100TE13.pdf (13 pages)

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Characteristics subject to change without notice

FEATURES

APPLICATIONS

BLOCK DIAGRAM

Single linear Digitally Programmable Potentiometer

128 Resistor taps

End-to-end resistance of 10k , 50k & 100k

Potentiometer control and memory access via

2-wire interface (I

Nonvolatile memory storage for wiper settings

Automatic recall of saved wiper setting at power up

Special increment/decrement instruction mode for

automatic trimming adjustments

V+ (Analog Voltage Supply) operation from +8 V to

+15V

Standby current less than 15 A

100 year nonvolatile memory data retention

10-pin MSOP package

Operating temperature of -40˚C to + 85˚C

LCD screen adjustment

Volume control

Mechanical potentiometer replacement

Gain adjustment

Line impedance matching

VCOM setting adjustments

operation from 2.7 V to 5.5 V

15 Volt Digitally Programmable Potentiometer (DPP™)

SDA

SCL

C-like)

NONVOLATILE

MEMORY

with 128 Taps and 2-wire Interface

7-BIT

(DR)

CONTROL LOGIC AND

ADDRESS DECODE

V CC

7-BIT WIPER

CONTROL

(WCR)

DESCRIPTION

The CAT5132 is a high voltage Digitally Programmable

Potentiometer (DPP) integrated with EEPROM memory

and control logic to operate in a similar manner as a

mechanical potentiometer. The DPP consists of a series

of resistive elements connected between two externally

accessible end points. The tap points between each

resistive element are connected to the wiper output with

CMOS switches. A separate 7-bit control register (WCR)

independently controls the wiper tap switches for the

DPP. Associated with the control register is a 7-bit

nonvolatile memory data register (DR) used for storing

wiper settings. Writing to the wiper control register or the

nonvolatile data register is via a 2-wire serial bus (I

like).

On power-up, WCR is set to mid scale (1000000) and

after the Power Supply becomes stable, the contents of

the data register (DR) are transferred to the wiper control

location.

The CAT5132 comes with 2 voltage supply inputs: V

the digital supply voltage input and V+, an analog supply

voltage input. These inputs allow the V+ to be as much

as 10 volts higher than the V

terminal values to be as much as 15 volts above ground.

The CAT5132 can be used as a potentiometer or as a

two-terminal variable resistor. It is intended for circuit

level adjustments. It is supplied standard in the -40 C to

+85 C industrial operating temperature range and offered

in the 10-pin MSOP package.

V+

DECODE CONTROL

128 TAP POSITION

127

and allow the DPP

Doc. No. 25092, Rev. 00

R H

R L

R W

CAT5132

C-

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CAT5132GZ-100TE13 Summary of contents

Page 1

Volt Digitally Programmable Potentiometer (DPP™) with 128 Taps and 2-wire Interface FEATURES Single linear Digitally Programmable Potentiometer 128 Resistor taps End-to-end resistance of 10k , 50k & 100k Potentiometer control and memory access via 2 2-wire interface (I C-like) ...

Page 2

CAT5132 PIN CONFIGURATION SDA 1 10 SCL GND MSOP 10-Pin Package ORDERING INFORMATION Prefix Device # 5132 CAT Company ID Product ...

Page 3

ABSOLUTE MAXIMUM RATINGS Temperature Under Bias....................-55˚C to +125˚C Storage Temperature ........................ -65˚C to +150˚C Voltage on any SDA, SCL, A0 & A1 pins with respect (1)(2) to Ground .............................. -2. Voltage & R Pins ...

Page 4

CAT5132 D.C. ELECTRICAL CHARACTERISTICS (Over recommended operating conditions unless otherwise stated ...

Page 5

POWER UP TIMING (1)( ...

Page 6

CAT5132 TYPICAL PERFORMANCE CHARACTERISTICS (CONT) Absolute Linearity Error per Tap Position 1.000 Tamb = 25 C 0.800 Rtotal = 10K 0.600 0.400 0.200 0.000 -0.200 -0.400 -0.600 -0.800 -1.000 Tap position LOW ...

Page 7

SERIAL BUS PROTOCOL The following defines the features of the 2-wire bus protocol: (1) Data transfer may be initiated only when the bus is not busy. (2) During a data transfer, the data line must remain stable whenever the clock ...

Page 8

CAT5132 DEVICE DESCRIPTION Access Control Register The volatile register WCR and the non-volatile register DR of CAT5132 are accessed only by addressing the volatile Access Register AR first, using the 3 byte I interface for all read and write operations ...

Page 9

Wiper Control Register (WCR) Description The CAT5132 contains a 7-bit Wiper Control Register which is decoded to select one of the 128 switches along its resistor array. The WCR is a volatile register and is written with the contents of ...

Page 10

CAT5132 Data Register (DR) The Data Register (DR nonvolatile register and its contents are automatically written to the Wiper Control Register (WCR) on power-up. It can be read at any time without effecting the value of the WCR. ...

Page 11

POTENTIOMETER OPERATION Power-On The CAT5132 is a 128-position, digital controlled potentiometer. At power-up the device turns on at the mid-point wiper location (64) until the wiper register can be loaded with the nonvolatile memory location previously stored in the device. ...

Page 12

Page 13

REVISION HISTORY Date Rev. Reason 09/12/2005 00 Initial Issue Copyrights, Trademarks and Patents Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: 2 DPP ™ AE ™ MiniPot™ Catalyst Semiconductor has been issued U.S. and foreign patents ...

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