AD7685CCPWP Analog Devices Inc, AD7685CCPWP Datasheet - Page 2
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AD7685CCPWP
Manufacturer Part Number
AD7685CCPWP
Description
IC ADC 16BIT PSEUDO-DIFF 10LFCSP
Manufacturer
Analog Devices Inc
Series
PulSAR®r
Datasheet
1.AD7685BCPZRL7.pdf
(28 pages)
Specifications of AD7685CCPWP
Design Resources
Parametric Measurement Unit and Supporting Components for PAD Appls Using AD5522 and AD7685 (CN0104) Integrated Device Power Supply for PAD with Output Voltage Range 0 V to 25 V (CN0130)
Number Of Bits
16
Sampling Rate (per Second)
250k
Data Interface
DSP, MICROWIRE™, QSPI™, Serial, SPI™
Number Of Converters
1
Power Dissipation (max)
15mW
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-WFDFN, CSP Exposed Pad
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
AD7685
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Application Diagram........................................................................ 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Timing Specifications....................................................................... 5
Absolute Maximum Ratings............................................................ 7
Pin Configuration and Function Descriptions............................. 8
Terminology ...................................................................................... 9
Typical Performance Characteristics ........................................... 10
Theory of Operation ...................................................................... 13
REVISION HISTORY
3/07—Rev. A to Rev. B
Changes to Features and Table 1 .................................................... 1
Changes to Table 3............................................................................ 4
Moved Figure 3 and Figure 4 to Page............................................. 6
Inserted Figure 6; Renumbered Sequentially................................ 8
Changes to Figure 13 and Figure 14............................................. 11
Changes to Figure 27...................................................................... 14
Changes to Table 9.......................................................................... 16
Changes to Figure 32...................................................................... 17
Changes to Figure 43...................................................................... 22
Changes to Figure 45...................................................................... 23
Updated Outline Dimensions ....................................................... 26
Changes to Ordering Guide .......................................................... 27
12/04—Rev. 0 to Rev. A
Changes to Specifications ................................................................ 3
Changes to Figure 17 Captions ..................................................... 11
Changes to Power Supply Section ................................................ 17
Changes to Digital Interface Section............................................ 18
Changes to CS Mode 4-Wire No Busy Indicator Section ......... 21
Changes to CS Mode 4-Wire with Busy Indicator Section ....... 22
Changes to Chain Mode, No Busy Indicator Section ................ 23
Changes to Chain Mode with Busy Indicator Section............... 24
Added True 16-Bit Isolated Application Example Section ....... 26
Added Figure 47.............................................................................. 26
Changes to Ordering Guide .......................................................... 28
4/04—Revision 0: Initial Revision
ESD Caution.................................................................................. 7
Circuit Information.................................................................... 13
Converter Operation.................................................................. 13
Typical Connection Diagram ................................................... 14
Analog Inputs.............................................................................. 15
Rev. B | Page 2 of 28
Application Hints ........................................................................... 24
Outline Dimensions ....................................................................... 26
Driver Amplifier Choice ........................................................... 16
Voltage Reference Input ............................................................ 16
Power Supply............................................................................... 16
Supplying the ADC from the Reference.................................. 17
Digital Interface.......................................................................... 17
CS Mode 3-Wire, No BUSY Indicator..................................... 18
CS Mode 3-Wire with BUSY Indicator ................................... 19
CS Mode 4-Wire, No BUSY Indicator..................................... 20
CS Mode 4-Wire with BUSY Indicator ................................... 21
Chain Mode, No BUSY Indicator ............................................ 22
Chain Mode with BUSY Indicator........................................... 23
Layout .......................................................................................... 24
Evaluating the Performance of the AD7685............................... 24
True 16-Bit Isolated Application Example .............................. 25
Ordering Guide .......................................................................... 27