AD7890AR-4 Analog Devices Inc, AD7890AR-4 Datasheet - Page 2

• Manufacturer Part Number: AD7890AR-4
• Description: IC,Data Acquisition System,8-CHANNEL,12-BIT,SOP,24PIN,PLASTIC
• Manufacturer: Analog Devices Inc
• Type: Data Acquisition System (DAS)r

Specifications of AD7890AR-4

• Rohs Status: RoHS non-compliant
• Resolution (bits): 12 b
• Sampling Rate (per Second): 117k
• Data Interface: Serial
• Voltage Supply Source: Single Supply
• Voltage - Supply: 0 V ~ 4.10 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)

AD7890
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 6
Pin Configuration and Function Descriptions............................. 7
Terminology ...................................................................................... 9
Control Register.............................................................................. 10
Theory of Operation ...................................................................... 11
REVISION HISTORY
9/06—Rev. B to Rev. C
Updated Format..................................................................Universal
Changes to Table 1............................................................................ 3
Updated Outline Dimensions ....................................................... 25
Changes to Ordering Guide .......................................................... 27
2/01—Rev. A to Rev. B
Timing Specifications .................................................................. 5
ESD Caution.................................................................................. 6
Converter Details........................................................................ 11
Circuit Description..................................................................... 11
Track/Hold Amplifier ................................................................ 12
Reference ..................................................................................... 13
Timing and Control ................................................................... 13
C
EXT
Functioning......................................................................... 16
Rev. C | Page 2 of 28
Serial Interface ................................................................................ 17
Microprocessor/Microcontroller Interface ................................. 20
Performance .................................................................................... 23
Outline Dimensions ....................................................................... 25
Self-Clocking Mode ................................................................... 17
External Clocking Mode ........................................................... 18
Simplifying the Interface ........................................................... 19
AD7890 to 8051 Interface ......................................................... 20
AD7890 to 68HC11 Interface ................................................... 20
AD7890 to ADSP-2101 Interface ............................................. 21
AD7890 to DSP56000 Interface ............................................... 21
AD7890 to TMS320C25/30 Interface...................................... 21
Antialiasing Filter....................................................................... 22
Linearity....................................................................................... 23
Noise ............................................................................................ 23
Dynamic Performance............................................................... 24
Effective Number of Bits ........................................................... 24
Ordering Guide .......................................................................... 27