Datasheet > ADS7808

ADS7808

更新时间： 2024-11-30 11:14:31

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
30页	1940K
描述
12 位 10µs 串行 CMOS 采样模数转换器 (ADC)

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ADS7808 数据手册

ADS7808

7808

SBAS018A – JANUARY 1992 – REVISED SEPTEMBER 2003

12-Bit 10µs Serial CMOS Sampling

ANALOG-to-DIGITAL CONVERTER

FEATURES

DESCRIPTION

ꢀ 100kHz SAMPLING RATE

The ADS7808 is a complete 12-bit sampling analog-to-digital

using state-of-the-art CMOS structures. It contains a 12-bit

capacitor-based SAR A/D with S/H, reference, clock, and a

serial data interface. Data can be output using the internal

clock, or can be synchronized to an external data clock. The

ADS7808 also provides an output synchronization pulse for

ease of use with standard DSP processors.

ꢀ 72dB SINAD WITH 45kHz INPUT

ꢀ ±1/2 LSB INL AND DNL

ꢀ SIX SPECIFIED INPUT RANGES

ꢀ SERIAL OUTPUT

ꢀ SINGLE +5V SUPPLY OPERATION

ꢀ PIN-COMPATIBLE WITH 16-BIT ADS7809

The ADS7808 is specified at a 100kHz sampling rate, and

specified over the full temperature range. Laser-trimmed

scaling resistors provide various input ranges including ±10V

and 0V to 5V, while an innovative design operates from a

single +5V supply, with power dissipation under 100mW.

ꢀ USES INTERNAL OR EXTERNAL

REFERENCE

ꢀ 100mW MAX POWER DISSIPATION

ꢀ 0.3" SO-20

The ADS7808 is available in a 0.3" SO-20, fully specified for

ꢀ SIMPLE DSP INTERFACE

operation over the industrial –40°C to +85°C range.

Power Down

R/C

Successive Approximation Register and Control Logic

Clock

20kΩ

10kΩ

CDAC

R1_IN

R2_IN

BUSY

Serial

20kΩ

5kΩ

Data

Out

Data Clock

Serial Data

Comparator

R3_IN

CAP

Internal

+2.5V Ref

Buffer

4kΩ

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ADS7808相关器件

型号	品牌	获取价格	描述	数据表
ADS7808_07	BB	获取价格	12-Bit 10us Serial CMOS Sampling ANALOG-to-DIGITAL CONVERTER
ADS7808P	BB	获取价格	12-Bit 10ms Serial CMOS Sampling ANALOG-to-DIGITAL CONVERTER
ADS7808PB	BB	获取价格	12-Bit 10ms Serial CMOS Sampling ANALOG-to-DIGITAL CONVERTER
ADS7808U	BB	获取价格	12-Bit 10ms Serial CMOS Sampling ANALOG-to-DIGITAL CONVERTER
ADS7808U	TI	获取价格	12 位 10µs 串行 CMOS 采样模数转换器 (ADC) \| DW \| 20 \| -
ADS7808U/1K	BB	获取价格	12-Bit 10us Serial CMOS Sampling ANALOG-to-DIGITAL CONVERTER
ADS7808U/1K	TI	获取价格	12 位 10µs 串行 CMOS 采样模数转换器 (ADC) \| DW \| 20 \| -
ADS7808U/1KE4	BB	获取价格	12-Bit 10us Serial CMOS Sampling ANALOG-to-DIGITAL CONVERTER
ADS7808UB	BB	获取价格	12-Bit 10ms Serial CMOS Sampling ANALOG-to-DIGITAL CONVERTER
ADS7808UB	TI	获取价格	12 位 10µs 串行 CMOS 采样模数转换器 (ADC) \| DW \| 20 \| -

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