Datasheet > LTC1257I

LTC1257I

更新时间： 2024-11-18 22:34:27

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
12页	264K
描述
Complete Single Supply 12-Bit Voltage Output DAC in SO-8

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LTC1257I 数据手册

LTC1257

Complete Single Supply

12-Bit Voltage Output

DAC in SO-8

DESCRIPTIO

EATURE

The LTC^®1257 is a complete single supply, 12-bit voltage

output D/A converter (DAC) in an SO-8 package. The

LTC1257 includes an output buffer amplifier, 2.048V

voltagereferenceandaneasytousethree-wirecascadable

serial interface. An external reference can be used to

override the internal reference and extend the output

voltage range to 12V. The power supply current is a low

350µA when operating from a 5V supply, making the

LTC1257idealforbattery-poweredapplications.Thespace-

saving 8-pin SO package and operation with no external

components provide the smallest 12-bit D/A system

available.

■

8-Pin SO Package

Buffered Voltage Output

Built-In 2.048V Reference

500µV/LSB with 2.048V Full Scale

1/2LSB Max DNL Error

Guaranteed 12-Bit Monotonic

3-Wire Cascadable Serial Interface

Wide Single Supply Range: V_CC= 4.75V to 15.75V

Low Power: I_CCTyp = 350µA with 5V Supply

O U

PPLICATI

■

Digital Offset/Gain Adjustment

Industrial Process Control

Automatic Test Equipment

, LTC and LT are registered trademarks of Linear Technology Corporation.

TYPICAL APPLICATI

Daisy-Chained Control Outputs

Differential Nonlinearity

vs Input Code

0.5

0.0

0.1µF

CLK

LTC1257

µP

CONTROL OUTPUT 1

OUT

LOAD

GND

OUT

REF

0.1µF

CLK

LTC1257

CONTROL OUTPUT 2

OUT

LOAD

GND

REF

OUT

–0.5

512 1024 1536 2048 2560 3072 3584 4098

CODE

TO NEXT DAC

1257 TA01

1257 TA05

12 3 4 5 6 7...12

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