Datasheet > LTC1285

LTC1285

更新时间： 2023-12-20 18:44:49

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
24页	346K
描述
采用 SO-8 封装的 3V、微功率采样、12 位 A/D 转换器

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中文翻译

获取价格

数据手册

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LTC1285 数据手册

LTC1285/LTC1288

3V Micropower Sampling

12-Bit A/D Converters in

SO-8 Packages

DESCRIPTION

FEATURES

TheLTC^®1285/LTC1288are3Vmicropower, 12-bit, suc-

cessive approximation sampling A/D converters. They

typically draw only 160µA of supply current when con-

verting and automatically power down to a typical supply

currentof1nAwhenevertheyarenotperformingconver-

sions. They are packaged in 8-pin SO packages and

operate on 3V to 6V supplies. These 12-bit, switched-

capacitor, successive approximation ADCs include

sample-and-holds. The LTC1285 has a single differential

analog input. The LTC1288 offers a software selectable

2-channel MUX.

■

12-Bit Resolution

■

8-Pin SO Plastic Package

■

Low Cost

■

Low Supply Current: 160µA Typ

■

Auto Shutdown to 1nA Typ

■

Guaranteed ±3/4LSB Max DNL

■

Single Supply 3V to 6V Operation

■

Differential Inputs (LTC1285)

■

2-Channel MUX (LTC1288)

■

On-Chip Sample-and-Hold

■

100µs Conversion Time

■

Sampling Rates:

On-chip serial ports allow efficient data transfer to a wide

rangeofmicroprocessorsandmicrocontrollersoverthree

wires.This,coupledwithmicropowerconsumption,makes

remote location possible and facilitates transmitting data

through isolation barriers.

7.5ksps (LTC1285)

6.6ksps (LTC1288)

■

^{I/O Compatible with}U ^{SPI, Microwire, etc.}

APPLICATIONS

These circuits can be used in ratiometric applications or

with an external reference. The high impedance analog

inputs and the ability to operate with reduced spans (to

1.5V full scale) allow direct connection to sensors and

transducersinmanyapplications, eliminatingtheneedfor

gain stages.

■

Pen Screen Digitizing

■

Battery-Operated Systems

■

Remote Data Acquisition

■

Isolated Data Acquisition

Battery Monitoring

■

Temperature Measurement

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

TYPICAL APPLICATIONS N

12µW, S0-8 Package, 12-Bit ADC

Supply Current vs Sample Rate

Samples at 200Hz and Runs Off a 3V Supply

1000

= 25°C

= 2.7V

REF

CLK

1µF

= 2.5V

= 120kHz

100

MPU

(e.g., 8051)

P1.4

P1.3

P1.2

REF

+IN

CLK

ANALOG INPUT

0V TO 3V RANGE

LTC1285

–IN

OUT

SERIAL DATA LINK

GND

CS/SHDN

LTC1285/88 • TA01

0.1

100

SAMPLE FREQUENCY (kHz)

LTC1285/88 • TA02

12 3 4 5 6 7...24

中文翻译

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与LTC1285相关器件

型号	品牌	获取价格	描述	数据表
LTC1285_15	Linear	获取价格	3V Micropower Sampling 12-Bit A/D Converters in SO-8 Packages
LTC1285CN8	Linear	获取价格	3V Micropower Sampling 12-Bit A/D Converters in SO-8 Packages
LTC1285CN8#PBF	Linear	获取价格	暂无描述
LTC1285CS8	Linear	获取价格	3V Micropower Sampling 12-Bit A/D Converters in SO-8 Packages
LTC1285CS8#PBF	Linear	获取价格	LTC1285 - 3V Micropower Sampling 12-Bit A/D Converters in SO-8 Packages; Package: SO; Pins
LTC1285CS8#TR	Linear	获取价格	暂无描述
LTC1285CS8#TRPBF	Linear	获取价格	LTC1285 - 3V Micropower Sampling 12-Bit A/D Converters in SO-8 Packages; Package: SO; Pins
LTC1286	Linear	获取价格	Micropower Sampling 12-Bit A/D Converters In S0-8 Packages
LTC1286	ADI	获取价格	采用 SO-8 封装的微功率采样、12 位 A/D 转换器
LTC1286_15	Linear	获取价格	Micropower Sampling 12-Bit A/D Converters In S0-8 Packages

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