Datasheet > ADS7844

ADS7844

更新时间： 2024-11-26 11:10:51

品牌	Logo	应用领域
德州仪器 - TI		转换器模数转换器
页数	文件大小	规格书
24页	648K
描述
12 位 8 通道串行输出采样模数转换器

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ADS7844 数据手册

ADS7844

SBAS100A – JANUARY 1998 – REVISED OCTOBER 2003

12-Bit, 8-Channel Serial Output Sampling

ANALOG-TO-DIGITAL CONVERTER

DESCRIPTION

FEATURES

ꢀ SINGLE SUPPLY: 2.7V to 5V

The ADS7844 is an 8-channel, 12-bit sampling analog-to-

digital converter (ADC) with a synchronous serial interface.

Typical power dissipation is 3mW at a 200kHz throughput

rate and a +5V supply. The reference voltage (V_REF) can be

varied between 100mV and V_CC, providing a corresponding

input voltage range of 0V to V_REF. The device includes a

shutdown mode that reduces power dissipation to under

1µW. The ADS7844 is ensured down to 2.7V operation.

ꢀ 8-CHANNEL SINGLE-ENDED OR

4-CHANNEL DIFFERENTIAL INPUT

ꢀ UP TO 200kHz CONVERSION RATE

ꢀ ±1 LSB MAX INL AND DNL

ꢀ NO MISSING CODES

ꢀ 72dB SINAD

Low power, high speed, and onboard multiplexer make the

ADS7844 ideal for battery-operated systems such as personal

digital assistants, portable multichannel data loggers, and

measurement equipment. The serial interface also provides

low-cost isolation for remote data acquisition. The ADS7844

is available in a 20-lead QSOP package and the MAX147

equivalent 20-lead SSOP package and is ensured over the

–40°C to +85°C temperature range.

ꢀ SERIAL INTERFACE

ꢀ 20-LEAD QSOP AND

20-LEAD SSOP PACKAGES

ꢀ ALTERNATE SOURCE FOR MAX147

APPLICATIONS

ꢀ DATA ACQUISITION

ꢀ TEST AND MEASUREMENT

ꢀ INDUSTRIAL PROCESS CONTROL

ꢀ PERSONAL DIGITAL ASSISTANTS

ꢀ BATTERY-POWERED SYSTEMS

CH0

CH1

CH2

SAR

DCLK

Eight

Channel

Multiplexer

CH3

CH4

Comparator

SHDN

DIN

Serial

Interface

and

CH5

CH6

CH7

COM

V_REF

CDAC

Control

DOUT

BUSY

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

www.ti.com

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与ADS7844相关器件

型号	品牌	获取价格	描述	数据表
ADS7844E	BB	获取价格	12-Bit, 8-Channel Serial Output Sampling ANALOG-TO-DIGITAL CONVERTER
ADS7844E	TI	获取价格	12 位 8 通道串行输出采样模数转换器 \| DBQ \| 20
ADS7844E/2K5	TI	获取价格	12 位 8 通道串行输出采样模数转换器 \| DBQ \| 20 \| -40 to 85
ADS7844EB	BB	获取价格	12-Bit, 8-Channel Serial Output Sampling ANALOG-TO-DIGITAL CONVERTER
ADS7844EB	TI	获取价格	12 位 8 通道串行输出采样模数转换器 \| DBQ \| 20
ADS7844EB/2K5	TI	获取价格	12 位 8 通道串行输出采样模数转换器 \| DBQ \| 20
ADS7844EBG4	TI	获取价格	12 位 8 通道串行输出采样模数转换器 \| DBQ \| 20
ADS7844EG4	TI	获取价格	12 位 8 通道串行输出采样模数转换器 \| DBQ \| 20
ADS7844N	TI	获取价格	12 位 8 通道串行输出采样模数转换器 \| DB \| 20
ADS7844N	BB	获取价格	12-Bit, 8-Channel Serial Output Sampling ANALOG-TO-DIGITAL CONVERTER

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