Datasheet

ANALOG INPUTS
1
2
3
4
5
AGND2
CAP
REF
AGND1
+
2.2 Fm
2.2 Fm
2.2 Fm
2.2 Fm
V
IN
V
IN
V
IN
R1
IN
R2
IN
6
50kW 50kW
1MW 1MW
+5V
+5V
+
1
2
3
4
5
AGND2
CAP
REF
AGND1
+
6
R1
IN
R2
IN
+
2.2 Fm
2.2 Fm
50kW
1MW
+5V
4
5
+
6
+
1
2
3
AGND2
CAP
REF
AGND1
R1
IN
R2
IN
±10V 0Vto5V 0Vto4V
1
2
3
4
5
AGND2
CAP
REF
AGND1
+
2.2 Fm
2.2 Fm
2.2 Fm
2.2 Fm
V
IN
V
IN
V
IN
R1
IN
R2
IN
6
1MW
+
1
2
3
4
5
AGND2
CAP
REF
AGND1
+
6
R1
IN
R2
IN
+
2.2 Fm
2.2 Fm
4
5
+
6
+
1
2
3
AGND2
CAP
REF
AGND1
R1
IN
R2
IN
±10V 0Vto5V 0Vto4V
ADS8517
www.ti.com ................................................................................................................................................. SLAS527A – SEPTEMBER 2008 – REVISED JUNE 2009
The ADS8517 offers three analog input ranges, as shown in Table 1 . The offset specification is factory-calibrated
with internal resistors. The gain specification is factory-calibrated with 0.1%, 0.25-W external resistors, as shown
in Figure 38 and Figure 39 . The external resistors can be omitted if a larger gain error is acceptable or if using
software calibration. The hardware trim circuitry shown in Figure 38 and Figure 39 can reduce the error to zero.
Figure 38. Circuit Diagrams (with Gain Adjust Trim)
Figure 39. Circuit Diagrams (Without Gain Adjust Trim)
Copyright © 2008 – 2009, Texas Instruments Incorporated Submit Documentation Feedback 23
Product Folder Link(s): ADS8517