AD7655AST datasheet(10/28 Pages) AD

部件名	AD7655AST

功能描述	Low Cost, 4-Channel, 16-Bit 1 MSPS PulSAR짰 ADC

PDF	28 Pages

Scroll/Zoom	100%

制造商	AD [Analog Devices]

网页	http://www.analog.com

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10 / 28 page

AD7655

Rev. B | Page 10 of 28

Pin No.

Mnemonic

Type1

Description

CNVST

Start Conversion. A falling edge on CNVST puts the internal sample-and-hold into the hold state and

initiates a conversion. In impulse mode (IMPULSE = HIGH), if CNVST is held LOW when the acquisition

phase (t8) is complete, the internal sample-and-hold is put into the hold state and a conversion is

immediately started.

REF

This input pin is used to provide a reference to the converter.

REFGND

Reference Input Analog Ground.

39, 41

INB1, INB2

Channel B Analog Inputs.

40, 45

INBN, INAN

Analog Inputs Ground Senses. Allow to sense each channel ground independently.

42, 43

REFB, REFA

These inputs are the references applied to Channel A and Channel B, respectively.

44, 46

INA2, INA1

Channel A Analog Inputs.

1 Al = input; DI = digital input; DO = digital output; DI/O = bidirectional digital; P = power.

AD7655AST 数据表(PDF) 10 Page - Analog Devices