ADS7808 Burr-Brown Corporation, ADS7808 Datasheet - Page 10

• Manufacturer Part Number: ADS7808
• Description: 12-Bit 10ms Serial CMOS Sampling ANALOG-to-DIGITAL CONVERTER
• Manufacturer: Burr-Brown Corporation

FIGURE 4b. Offset/Gain Circuits for Bipolar Input Ranges.
Input Range
3.33V
10V
5V
®
ADS7808
V
IN
33.2k
200
100
+
100
+
33.2k
2.2µF
+
2.2µF
V
V
IN
Without Trim
IN
33.2k
2.2µF
2.2µF
200
100
200
2.2µF
+
+
+
R1
AGND1
R2
R3
CAP
REF
AGND2
2.2µF
IN
IN
IN
R1
AGND1
R2
R3
CAP
REF
AGND2
R1
AGND1
R2
R3
CAP
REF
AGND2
IN
IN
IN
IN
IN
IN
10
50k
50k
50k
+5V
(Adjust offset first at 0V, then adjust gain)
V
IN
+5V
100
+5V
200
50k
50k
33.2k
+5V
100
33.2k
33.2k
50k
+5V
2.2µF
+5V
With Trim
576k
V
IN
2.2µF
V
576k
IN
2.2µF
2.2µF
576k
+
200
2.2µF
100
+
+
200
+
+
+
2.2µF
R1
AGND1
R2
R3
CAP
REF
AGND2
R1
AGND1
R2
R3
CAP
REF
AGND2
R1
AGND1
R2
R3
CAP
REF
AGND2
IN
IN
IN
IN
IN
IN
IN
IN
IN