CAT512 datasheet, PDF - EEWORLD Datasheet

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CAT512: Description8-Bit Dual Digital POT with Independent Reference Inputs; File Size71KB，10 Pages; ManufacturerCatalyst; Websitehttp://www.catalyst-semiconductor.com/

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CAT512 Overview

8-Bit Dual Digital POT with Independent Reference Inputs

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CAT512

8-Bit Dual Digital POT with Independent Reference Inputs

FEATURES

Output settings retained without power

Independent Reference Inputs

Output range includes both supply rails

Programming voltage generated on-chip

2 independently addressable outputs

Serial

P interface

Single supply operation: 2.7V-5.5V

APPLICATIONS

Automated product calibration.

Remote control adjustment of equipment

Offset, gain and zero adjustments in Self-

Calibrating and Adaptive Control systems.

Tamper-proof calibrations.

DESCRIPTION

The CAT512 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 and

systems capable of self calibration, it is also well suited

for applications were equipment requiring periodic ad-

justment is either difficult to access or located in a

hazardous environment.

The CAT512 offers 2 independently programmable DACs

each having its own reference inputs and each capable

of rail to rail output swing. Output settings, stored 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.

FUNCTIONAL DIAGRAM

Control of the CAT512 is accomplished with a simple 3

wire serial interface. A Chip Select pin allows several

CAT512's to share a common serial interface and com-

munications back to the host controller is via a single

serial data line thanks to the CAT512’s Tri-Stated Data

Output pin. A RDY/BSYoutput working in concert with

an internal low voltage detector signals proper operation

of EEPROM Erase/Write cycle.

The CAT512 operates from a single 3–5 volt power

supply. The high voltage required for EEPROM Erase/

Write operations is generated on-chip.

The CAT512 is available in the 0°C to 70°C Commercial

and –40°C to +85°C Industrial operating temperature

ranges and offered in 14-pin plastic DIP and Surface

mount packages.

PIN CONFIGURATION

RDY/BSY

SERIAL DATA OUTPUT

DIP Package (P)

SOIC Package (J)

VDD

CLK

RDY/BSY

PROG

VREF H1

VREF H2

VOUT1

VOUT2

VREF L2

VREF L1

GND

PROG

PROGRAM

CONTROL

EEPROM

LATCH

DAC 1

REF

VDD

CLK

OUT

V REF L1

VREF H1

VREF H2

VOUT1

VOUT2

VREF L2

VREF L1

GND

CLK

DATA

CONTROLLER

RDY/BSY

EEPROM

LATCH

DAC 2

REF

OUT

VREF L2

PROG

CAT512

H.V.

CHARGE

PUMP

CAT512

GND

Characteristics subject to change without notice

CAT512 Related Products

	CAT512	CAT512JITE13	CAT512PITE13	CAT512PTE13	CAT512JTE13
Description	8-Bit Dual Digital POT with Independent Reference Inputs	8-Bit Dual Digital POT with Independent Reference Inputs	8-Bit Dual Digital POT with Independent Reference Inputs	8-Bit Dual Digital POT with Independent Reference Inputs	8-Bit Dual Digital POT with Independent Reference Inputs

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