THS1031CPW Datasheet, PDF (21/41 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
onboard reference generator configuration (continued)
+
VBG _
Internal
Reference
Buffer
Mode =
AVDD
2
+
VREF = 2 V
_
10 kΩ
10 kΩ
REFSENSE
0.1 µF 1 µF
Tantalum
AGND
Figure 21. 2-V VREF Using ORG
+
VBG _
Internal
Reference
Buffer
Mode =
AVDD
2
+
_
VREF = 1 + (Ra/Rb)
Ra
REFSENSE
Rb
0.1 µF 1 µF
Tantalum
AGND
Figure 22. External Divider Mode
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