AD7655 Analog Devices, AD7655 Datasheet - Page 2

• 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
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Product Highlights ........................................................................... 1
Specifications..................................................................................... 3
Timing Specifications....................................................................... 5
Absolute Maximum Ratings............................................................ 7
Pin Configuration and Function Descriptions............................. 8
Terminology .................................................................................... 11
Typical Performance Characteristics ........................................... 12
Application Information................................................................ 14
REVISION HISTORY
9/05—Rev. A to Rev. B
Changes to General Description .................................................... 1
Changes to Specifications ................................................................ 3
Changes to Timing Specifications .................................................. 5
Changes to Typical Performance Characteristics....................... 13
Changes to Figure 17...................................................................... 15
Added Table 8.................................................................................. 17
Changes to Figure 28...................................................................... 21
Updated Outline Dimensions ....................................................... 26
Changes to Ordering Guide .......................................................... 27
ESD Caution.................................................................................. 7
Circuit Information.................................................................... 14
Modes of Operation ................................................................... 14
Transfer Functions...................................................................... 14
Typical Connection Diagram ................................................... 16
Analog Inputs.............................................................................. 16
Input Channel Multiplexer........................................................ 16
Rev. B | Page 2 of 28
Application Hints ........................................................................... 25
Outline Dimensions ....................................................................... 26
12/04—Rev. 0 to Rev. A
Changes to Figure 17...................................................................... 15
Changes to Figure 18...................................................................... 16
Changes to Voltage Reference Input section .............................. 17
Changes to Conversion Control section ..................................... 18
Changes to Digital Interface section............................................ 18
Updated Outline Dimensions....................................................... 25
11/02—Revision 0: Initial Version
Driver Amplifier Choice ........................................................... 16
Voltage Reference Input ............................................................ 17
Power Supply............................................................................... 17
Power Dissipation....................................................................... 17
Conversion Control ................................................................... 18
Digital Interface.......................................................................... 18
Parallel Interface......................................................................... 18
Serial Interface ............................................................................ 20
Master Serial Interface............................................................... 20
Slave Serial Interface .................................................................. 22
Microprocessor Interfacing....................................................... 24
SPI Interface (ADSP-219
Layout .......................................................................................... 25
Evaluating the AD7655 Performance ...................................... 25
Ordering Guide .......................................................................... 27
X
) ....................................................... 24