AD7655ACP データシートの表示（PDF） - Analog Devices

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AD7655ACP

Low Cost, 4-Channel, 16-Bit 1 MSPS PulSAR® ADC

Analog Devices 

AD7655

Pin No. Mnemonic

35

CNVST

37

38

39, 41

40, 45

42, 43

44, 46

REF

REFGND

INB1, INB2

INBN, INAN

REFB, REFA

INA2, INA1

Type 1

DI

AI

AI

AI

AI

AI

AI

Description

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.

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

Reference Input Analog Ground.

Channel B Analog Inputs.

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

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

Channel A Analog Inputs.

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

Rev. B | Page 10 of 28

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