THS1031CPW Datasheet, PDF (18/41 Pages) Texas Instruments – 3-V TO 5.5-V, 10-BIT, 30 MSPS CMOS ANALOG-TO-DIGITAL CONVERTER

THS1031
3-V TO 5.5-V, 10-BIT, 30 MSPS
CMOS ANALOG-TO-DIGITAL CONVERTER
SLAS242E – NOVEMBER 1999 – REVISED MARCH 2002
PRINCIPLES OF OPERATION
differential mode (mode = AV_DD/2) (continued)
+FS
AIN+
–FS
+FS
AIN–
–FS
AIN
REFTS
MODE
REFBS REFSENSE
AVDD
2
0.1 µF
REFTF
VREF
0.1 µF
10 µF
0.1 µF
REFBF
Figure 16. Differential Input Mode, 1-V Reference Span
AVDD
+FS
2
VM
AIN
MODE
–FS
DC SOURCE = VM
VM
+
_
REFTS
REFBS
0.1 µF
REFTF
0.1 µF
10 µF
0.1 µF
REFBF REFSENSE
Figure 17. Center Span Mode, 2-V Reference Span
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