Data Sheet

AD7687

Rev. E | Page 3 of 26

REVISION HISTORY

12/15—Rev. D to Rev. E

Deleted Figure 1; Renumbered Sequentially .................................1

Changes to Features Section and General Description Section .......1

Change to Signal-to-(Noise + Distortion) Parameter, Table 2 .........4

Added Timing Diagrams Section....................................................7

Moved Figure 2 and Figure 3 ...........................................................7

Changes to Table 8 ............................................................................9

Changes to Figure 7 Caption, Figure 8 Caption, Figure 10

Caption, and Figure 11 Caption ....................................................11

Added Theory of Operation Section ............................................14

Changes to Analog Input Section .................................................16

Changes to Drive Amplifier Choice Section, Table 10, Figure 30,

Voltage Reference Input Section, and Power Supply Section .........17

Changes to Supplying the ADC from the Reference Section

and Digital Interface Section .........................................................18

Changed CS Mode, 3-Wire, No BUSY Indicator Section to CS

Mode, 3-Wire Without BUSY Indicator Section ........................19

Changes to CS Mode, 3-Wire Without BUSY Indicator Section...19

Changes to CS Mode, 3-Wire with BUSY Indicator Section......20

Changed CS Mode, 4-Wire, No BUSY Indicator Section to CS

Mode, 4-Wire Without BUSY Indicator Section ........................21

Changes to CS Mode, 4-Wire Without BUSY Indicator Section ...21

Changes to CS Mode, 4-Wire with BUSY Indicator Section..........22

Changed Chain Mode, No BUSY Indicator Section to Chain

Mode Without BUSY Indicator Section.......................................23

Changes to Chain Mode Without BUSY Indicator Section,

Figure 42 Caption, and Figure 43 Caption...................................23

Changes to Chain Mode with BUSY Indicator Section .............24

Changes to Layout Section.............................................................25

Changed Application Hints Section to Application

Recommendations Section ............................................................25

Changes to Ordering Guide...........................................................26

4/15—Rev. C to Rev. D

Added Patent Note, Note 1 ..............................................................1

Changes to SNR Degradation Equation, Driver Amplifier

Choice Section.................................................................................16

Changes to Ordering Guide...........................................................26

7/14—Rev. B to Rev. C

Deleted QFN...................................................................Throughout

Changed Application Diagram Section to Typical Application

Circuit Section...................................................................................1

Change to Features Section..............................................................1

Added Note 1 .....................................................................................1

Changes to Figure 27 ......................................................................14

Changes to Evaluating the Performance of the AD7687

Section ..............................................................................................24

Updated Outline Dimensions........................................................25

Changes to Ordering Guide...........................................................26

8/11—Rev. A to Rev. B

Changes to Table 7 ............................................................................7

Changes to Ordering Guide...........................................................26

2/11—Rev. 0 to Rev. A

Deleted QFN in Development Note ............................Throughout

Changes to Table 6 ............................................................................7

Added Thermal Resistance Section and Table 7...........................7

Changes to Figure 6 and Table 8 .....................................................8

Updated Outline Dimensions........................................................25

Changes to Ordering Guide...........................................................26

4/05—Revision 0: Initial Version