AD7921ARM Analog Devices Inc, AD7921ARM Datasheet - Page 2

• Manufacturer Part Number: AD7921ARM
• Description: IC ADC 12BIT DUAL LP 8-MSOP
• Manufacturer: Analog Devices Inc

Specifications of AD7921ARM

• Number Of Bits: 12
• Sampling Rate (per Second): 250k
• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 20mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

AD7911/AD7921
TABLE OF CONTENTS
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 9
Pin Configurations and Function Descriptions ......................... 10
Terminology .................................................................................... 11
Typical Performance Characteristics ........................................... 13
Circuit Information ........................................................................ 15
REVISION HISTORY
Revision 0: Initial Version
AD7911 Specifications................................................................. 3
AD7921 Specifications................................................................. 5
Timing Specifications .................................................................. 7
Timing Diagrams.......................................................................... 7
Timing Examples.......................................................................... 8
ESD Caution.................................................................................. 9
Converter Operation.................................................................. 15
ADC Transfer Function............................................................. 15
Typical Connection Diagram ................................................... 16
Rev. 0 | Page 2 of 28
Modes of Operation ....................................................................... 18
Serial Interface ................................................................................ 21
Application Hints ........................................................................... 24
Outline Dimensions ....................................................................... 25
Analog Input ............................................................................... 16
Digital Inputs .............................................................................. 17
DIN Input .................................................................................... 17
DOUT Output ............................................................................ 17
Normal Mode.............................................................................. 18
Power-Down Mode .................................................................... 18
Power-Up Time .......................................................................... 19
Power vs. Throughput Rate....................................................... 20
Microprocessor Interfacing....................................................... 22
Grounding and Layout .............................................................. 24
Ordering Guide .......................................................................... 25