ADS7808 Burr-Brown Corporation, ADS7808 Datasheet - Page 9

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

FIGURE 4a. Offset/Gain Circuits for Unipolar Input Ranges.
Input Range
0V – 10V
0V – 5V
0V – 4V
V
33.2k
IN
200
200
2.2µF
+
2.2µF
+
33.2k
2.2µF
V
+
Without Trim
IN
33.2k
200
100
100
2.2µF
100
2.2µF
2.2µF
V
IN
+
+
+
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
9
50k
50k
50k
(Adjust offset first at 0V, then adjust gain)
+5V
100
+5V
+5V
200
33.2k
200
2.2µF
33.2k
V
IN
50k
33.2k
50k
+5V
+
With Trim
+5V
50k
V
V
IN
+5V
ADS7808
IN
576k
576k
200
2.2µF
100
2.2µF
2.2µF
2.2µF
576k
100
2.2µF
+
+
+
+
R1
AGND1
R2
R3
CAP
REF
AGND2
+
IN
IN
IN
R1
AGND1
R2
R3
CAP
REF
AGND2
R1
AGND1
R2
R3
CAP
REF
AGND2
IN
IN
IN
IN
IN
IN
®