CAT521

更新时间： 2025-08-22 22:54:19

品牌	Logo	应用领域
CATALYST		电位器
页数	文件大小	规格书
9页	58K
描述
8-Bit Digital POT With Independent Reference Inputs

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CAT521 数据手册

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CAT521

8-Bit Digital POT With Independent Reference Inputs

FEATURES

APPLICATIONS

ꢀꢀꢀBuffered Outputs

ꢀ Automated product calibration.

ꢀ Output settings retained without power

ꢀ Output range includes both supply rails

ꢀ Programming voltage generated on-chip

ꢀ Serial µP interface

ꢀ Remote control adjustment of equipment

ꢀ Offset, gain and zero adjustments in Self-

Calibrating and Adaptive Control systems.

ꢀ Tamper-proof calibrations.

ꢀ Single supply operation: 2.7V-5.5V

DESCRIPTION

and stored settings can be read back without disturbing

the DAC’s output.

TheCAT521isadual8-BitMemoryDACdesignedasan

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.

Control of the CAT521 is accomplished with a simple 3

wire serial interface. A Chip Select pin allows several

CAT521'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 CAT521’s Tri-Stated Data

Output pin. A RDY/BSY output working in concert with

aninternallowvoltagedetectorsignalsproperoperation

of EEPROM Erase/Write cycle.

The CAT521 consists of a programmable DAC with

independent high and low reference inputs and is ca-

pable of a rail to rail output swing. The output is buffered

by a rail to rail OP AMP. 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. The output can be dithered to test

new output values without effecting the stored settings

The CAT521 operates from a single 3–5 volt power

supply. The high voltage required for EEPROM Erase/

Write operations is generated on-chip.

The CAT521 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.

FUNCTIONAL DIAGRAM

PIN CONFIGURATION

DIP Package (P)

SOIC Package (J)

RDY/BSY

SERIAL DATA OUTPUT

REF

CLK

PROGRAM

CONTROL

PROG

OUT

RDY/BSY

OUT

RDY/BSY

REF

CAT521

EEPROM

LATCH

–

DAC 1

OUT

REF

CLK

REF

DATA

CONTROLLER

GND

PROG

GND

PROG

H.V.

CHARGE

PUMP

CAT521

GND

Characteristics subject to change without notice

12 3 4 5 6 7...9

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与CAT521相关器件

型号	品牌	获取价格	描述	数据表
CAT521J	CATALYST	获取价格	Analog Circuit, 1 Func, PDSO14, SOIC-14
CAT521J-TE10	CATALYST	获取价格	Configured Digitally Programmable Potentiometer
CAT521J-TE13	ETC	获取价格	DIGITAL POTENTIOMETER\|SOP\|14PIN\|PLASTIC
CAT521JI	CATALYST	获取价格	Analog Circuit, 1 Func, PDSO14, SOIC-14
CAT521JI-TE10	CATALYST	获取价格	Configured Digitally Programmable Potentiometer
CAT521JI-TE13	CATALYST	获取价格	Analog Circuit, 1 Func, PDSO14, SOIC-14
CAT521JITE13	CATALYST	获取价格	8-Bit Digital POT With Independent Reference Inputs
CAT521JTE13	CATALYST	获取价格	8-Bit Digital POT With Independent Reference Inputs
CAT521L	CATALYST	获取价格	Analog Circuit, 1 Func, PDIP14, LEAD-FREE, PLASTIC, DIP-14
CAT521L-TE10	CATALYST	获取价格	Configured Digitally Programmable Potentiometer

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