AD7621 Analog Devices, AD7621 Datasheet - Page 2

• Manufacturer Part Number: AD7621
• Description: 16-Bit, 2 LSB INL, 3 MSPS PulSAR® ADC
• Manufacturer: Analog Devices

Specifications of AD7621

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 3MSPS
• Interface: Byte,Par,Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

AD7621
TABLE OF CONTENTS
Specifications..................................................................................... 3
Timing Specifications....................................................................... 5
Absolute Maximum Ratings............................................................ 7
Pin Configuration and Function Descriptions............................. 8
Terminology .................................................................................... 11
Typical Performance Characteristics ........................................... 12
Theory of Operation ...................................................................... 15
REVISION HISTORY
5/05 — Revision 0: Initial Version
Serial Clock Timing Specifications ............................................ 6
ESD Caution.................................................................................. 7
Circuit Information.................................................................... 15
Converter Operation.................................................................. 15
Modes of Operation ................................................................... 15
Transfer Functions...................................................................... 16
Typical Connection Diagram ................................................... 17
Analog Inputs.............................................................................. 17
Driver Amplifier Choice............................................................ 17
Rev. 0 | Page 2 of 32
Interfaces.......................................................................................... 21
Application ...................................................................................... 27
Outline Dimensions ....................................................................... 28
Voltage Reference Input ............................................................ 18
Power Supply............................................................................... 19
Power Dissipation vs. Throughput .......................................... 20
Conversion Control ................................................................... 20
Digital Interface.......................................................................... 21
Parallel Interface......................................................................... 21
Serial Interface ............................................................................ 22
Master Serial Interface............................................................... 22
Slave Serial Interface .................................................................. 24
Microprocessor Interfacing....................................................... 26
Layout .......................................................................................... 27
Evaluating the AD7621 Performance ...................................... 27
Ordering Guide .......................................................................... 29