Datasheet > LTC1661

LTC1661

更新时间： 2023-12-20 18:44:03

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
14页	239K
描述
MSOP 封装的微功率、双通道 10 位 DAC

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LTC1661 数据手册

LTC1661

Micropower Dual

10-Bit DAC in MSOP

Features

Description

The LTC^®1661 integrates two accurate, serially address-

able, 10-bitdigital-to-analogconverters(DACs)inasingle

tiny MS8 package. Each buffered DAC draws just 60µA

total supply current, yet is capable of supplying DC output

currents in excess of 5mA and reliably driving capacitive

loads up to 1000pF. Sleep mode further reduces total

supply current to a negligible 1µA.

Tiny: Two 10-Bit DACs in an 8-Lead MSOP—

Half the Board Space of an SO-8

Micropower: 60µA per DAC

Sleep Mode: 1µA for Extended Battery Life

Rail-to-Rail Voltage Outputs Drive 1000pF

Wide 2.7V to 5.5V Supply Range

Double Buffered for Independent or Simultaneous

DAC Updates

Linear Technology’s proprietary, inherently monotonic

voltage interpolation architecture provides excellent lin-

earity while allowing for an exceptionally small external

form factor. The double-buffered input logic provides

simultaneous update capability and can be used to write

to either DAC without interrupting sleep mode.

Reference Range Includes Supply for Ratiometric

0V-to-V Output

Reference Input Has Constant Impedance over All

Codes (260kΩ Typ)—Eliminates External Buffers

3-Wire Serial Interface with Schmitt Trigger Inputs

Differential Nonlinearity: ≤ 0.75LSB Max

Ultralow supply current, power-saving sleep mode and

extremely compact size make the LTC1661 ideal for

battery-powered applications, while its straightforward

usability, high performance and wide supply range make

it an excellent choice as a general purpose converter.

applications

Mobile Communications

Digitally Controlled Amplifiers and Attenuators

Portable Battery-Powered Instruments

Automatic Calibration for Manufacturing

For additional outputs and even greater board density,

please refer to the LTC1660 micropower octal DAC for

10-bit applications. For 8-bit applications, please consult

the LTC1665 micropower octal DAC.

Remote Industrial Devices

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

Block Diagram

GND

OUT A

OUT B

Differential Nonlinearity (DNL)

0.75

0.60

10-BIT

DAC A

10-BIT

DAC B

0.40

0.20

CONTROL

LOGIC

ADDRESS

DECODER

–0.20

–0.40

–0.60

–0.75

SHIFT REGISTER

256

512

768

1023

CODE

1661 G02

1661 BD

CS/LD

SCK

REF

1661fb

For more information www.linear.com/LTC1661

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