AD7655 Analog Devices, AD7655 Datasheet - Page 10

• Manufacturer Part Number: AD7655
• Manufacturer: Analog Devices

Specifications of AD7655

• Resolution (bits): 16bit
• # Chan: 4
• Sample Rate: 1MSPS
• Interface: Par,Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref) x 2
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

AD7655
Pin No.
35
37
38
39, 41
40, 45
42, 43
44, 46
1
Al = input; DI = digital input; DO = digital output; DI/O = bidirectional digital; P = power.
Mnemonic
CNVST
REF
REFGND
INB1, INB2
INBN, INAN
REFB, REFA
INA2, INA1
Type
DI
AI
AI
AI
AI
AI
AI
1
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 (t
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.
8
) is complete, the internal sample-and-hold is put into the hold state and a conversion is
Rev. B | Page 10 of 28