1

RDY/BSY

PROG

PROGRAM

CONTROL

DI

CS

DATA

REGISTER

& EEPROM

CLK

SERIAL

CONTROL

DAC 2

SERIAL

DATA

OUTPUT

REGISTER

GND

V

L

REF

V

H

REF

V

DD

14

7

5

2

4

DAC 1

V

1

13

6

12

OUT

OUT

V

2

DO

89

31

© 2001 by Catalyst Semiconductor, Inc.

Characteristics subject to change without notice

Advance Information

FEATURES

APPLICATIONS

Calibrating and Adaptive Control systems.

DESCRIPTION

The CAT513 is a dual 8-Bit Memory DAC designed as an

electronic replacement for mechanical potentiometers

and trim pots. Intended for final calibration of products

such as camcorders, fax machines and cellular tele-

phones on automated high volume production lines, it is

also well suited for systems capable of self calibration,

and applications where equipment which is either diffi-

cult to access or in a hazardous environment, requires

periodic adjustment.

The 2 independently programmable DAC's have an

output range which includes both supply rails. Output

settings, stored in non-volatile EEPROM memory, are

not lost when the device is powered down and are

automatically reinstated when power is returned. Each

output can be dithered to test new output values without

effecting the stored settings and stored settings can be

read back without disturbing the DAC’s output.

Control of the CAT513 is accomplished with a simple 3

wire serial interface. A Chip Select pin allows several

CAT513's to share a common serial interface and com-

munication back to the host controller is via a single

serial data line thanks to the CAT513’s Tri-Stated Data

Output pin. A Rdy/

Bsy output working in concert with an

internal low voltage detector signals proper operation of

EEPROM Erase/Write cycle.

The CAT513 is available in the 0 to 70

° C Commercial

and –40

° C to + 85° C Industrial operating temperature

ranges and offered in 14-pin plastic DIP and SOIC

packages.

FUNCTIONAL DIAGRAM

PIN CONFIGURATION

CAT513

8-Bit Dual Digital POT

DIP Package (P)

SOIC Package (J)

CAT513

Doc. No. ______ 3/01 M-1

RDY/

BSY

CLK

CS

PROG

DI

DO

VDD

2

3

4

13

12

11

5

6

7

10

9

8

114

GND

VREFH

VOUT1

VOUT2

VREFL

CAT

513

CLK

CS

PROG

DI

DO

VDD

2

3

4

13

12

11

5

6

7

10

9

8

114

GND

VREFH

VOUT1

VOUT2

VREFL

CAT

513

RDY/

BSY

NC

NC

NC

NC