AD7631BCPZ Analog Devices Inc, AD7631BCPZ Datasheet - Page 2

• Manufacturer Part Number: AD7631BCPZ
• Description: IC,A/D CONVERTER,SINGLE,18-BIT,CMOS,LLCC,48PIN
• Manufacturer: Analog Devices Inc
• Series: PulSAR®r

Specifications of AD7631BCPZ

• Number Of Bits: 18
• Sampling Rate (per Second): 250k
• Data Interface: Serial, Parallel
• Number Of Converters: 1
• Power Dissipation (max): 120mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-VFQFN, CSP Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD7631
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 7
Pin Configuration and Function Descriptions............................. 8
Typical Performance Characteristics ........................................... 12
Terminology .................................................................................... 16
Theory of Operation ...................................................................... 17
REVISION HISTORY
3/11—Rev. 0 to Rev. A
Changes to Resolution Parameter, Table 2 .................................... 3
Changes to Figure 4 and Table 6..................................................... 8
Added Exposed Pad Notation to Outline Dimensions ............. 32
2/07—Revision 0: Initial Version
Timing Specifications .................................................................. 5
ESD Caution.................................................................................. 7
Overview...................................................................................... 17
Converter Operation.................................................................. 17
Transfer Functions...................................................................... 18
Typical Connection Diagram ................................................... 18
Analog Inputs.............................................................................. 19
Rev. A | Page 2 of 32
Interfaces.......................................................................................... 24
Application Information................................................................ 31
Outline Dimensions ....................................................................... 32
Driver Amplifier Choice ........................................................... 20
Voltage Reference Input/Output .............................................. 21
Power Supplies ............................................................................ 22
Conversion Control ................................................................... 23
Digital Interface.......................................................................... 24
Parallel Interface......................................................................... 24
Serial Interface ............................................................................ 25
Master Serial Interface............................................................... 25
Slave Serial Interface .................................................................. 26
Hardware Configuration ........................................................... 29
Software Configuration ............................................................. 29
Microprocessor Interfacing....................................................... 30
Layout Guidelines....................................................................... 31
Evaluating Performance ............................................................ 31
Ordering Guide .......................................................................... 32