Datasheet > ADS7812

ADS7812

更新时间： 2024-09-14 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
28页	1242K
描述
低功耗串行 12 位采样模数转换器

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ADS7812 数据手册

ADS7812

SBAS042A – MARCH 1997 – REVISED SEPTEMBER 2003

Low-Power, Serial 12-Bit Sampling

ANALOG-TO-DIGITAL CONVERTER

FEATURES

DESCRIPTION

ꢀ 20µs max CONVERSION TIME

ꢀ SINGLE +5V SUPPLY OPERATION

ꢀ PIN-COMPATIBLE WITH 16-BIT ADS7813

ꢀ EASY-TO-USE SERIAL INTERFACE

ꢀ 0.3" DIP-16 AND SO-16

The ADS7812 is a low-power, single +5V supply, 12-bit

sampling analog-to-digital converter. It contains a complete

12-bit capacitor-based SAR A/D with a sample/hold, clock,

reference, and serial data interface.

The converter can be configured for a variety of input ranges

including ±10V, ±5V, 0V to 10V, and 0.5V to 4.5V. A high

impedance 0.3V to 2.8V input range is also available (input

impedance > 10MΩ). For most input ranges, the input

voltage can swing to +16.5V or –16.5V without damage to

the converter.

ꢀ ±0.5LSB max INL AND DNL

ꢀ 72dB min SINAD

ꢀ USES INTERNAL OR EXTERNAL

REFERENCE

A flexible SPI compatible serial interface allows data to be

synchronized to an internal or external clock. The ADS7812

is specified at a 40kHz sampling rate over the –40°C to

+85°C temperature range. It is available in a 0.3" DIP-16 or

an SO-16 package.

ꢀ MULTIPLE INPUT RANGES

ꢀ 35mW max POWER DISSIPATION

ꢀ NO MISSING CODES

ꢀ 50µW POWER DOWN MODE

APPLICATIONS

ꢀ DATA ACQUISITION SYSTEMS

ꢀ INDUSTRIAL CONTROL

ꢀ TEST EQUIPMENT

BUSY

PWRD

CONV

Successive Approximation Register and Control Logic

Clock

ꢀ DIGITAL SIGNAL PROCESSING

40kΩ⁽¹⁾

CDAC

R1_IN

8kΩ⁽¹⁾

EXT/INT

DATACLK

DATA

R2_IN

Serial

20kΩ⁽¹⁾

Data

Out

Comparator

R3_IN

BUF

CAP

Internal

+2.5V Ref

Buffer

4kΩ⁽¹⁾

NOTE: (1) Actual value may vary ±30%.

REF

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ADS7812相关器件

型号	品牌	获取价格	描述	数据表
ADS7812P	BB	获取价格	Low-Power, Serial 12-Bit Sampling ANALOG-TO-DIGITAL CONVERTER
ADS7812PB	BB	获取价格	Low-Power, Serial 12-Bit Sampling ANALOG-TO-DIGITAL CONVERTER
ADS7812PB	TI	获取价格	低功耗串行 12 位采样模数转换器 \| N \| 16
ADS7812PBG4	TI	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP16, 0.300 INCH, GREEN, PLASTI
ADS7812U	BB	获取价格	Low-Power, Serial 12-Bit Sampling ANALOG-TO-DIGITAL CONVERTER
ADS7812U/1K	TI	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16, PLASTIC, SOIC-16
ADS7812U/1KG4	TI	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16, PLASTIC, SOIC-16
ADS7812UB	TI	获取价格	低功耗串行 12 位采样模数转换器 \| DW \| 16 \| -40 to 85
ADS7812UB	BB	获取价格	Low-Power, Serial 12-Bit Sampling ANALOG-TO-DIGITAL CONVERTER
ADS7812UB/1K	BB	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial Access, PDSO16, GREEN, PL

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