Datasheet

V
IN
2.2µF
2.2µF
R1
IN
AGND1
R2
IN
R3
IN
CAP
REF
AGND2
V
IN
R1
IN
AGND1
R2
IN
R3
IN
CAP
REF
AGND2
+ 5V
50 kΩ
2.2µF
576kΩ
Input Range
0V − 8.192V
Without Trim
With Trim
(Adjust Gain)
2.2µF
ADS8519
SLAS462D –JUNE 2007–REVISED SEPTEMBER 2010 www.ti.com
ANALOG INPUTS
The ADS8519 has three analog input ranges, as shown in Table 2. The offset specification is factory-calibrated
with internal resistors. The gain specification is factory-calibrated with 0.1%, 0.25W, external resistors, as shown
in Figure 29 and Figure 30. 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 29 and Figure 30 can reduce the error to zero.
Table 2. Input Range Connections
(see Figure 29 and Figure 30 for complete information)
ANALOG
INPUT
RANGE CONNECT R1
IN
TO CONNECT R2
IN
TO CONNECT R3
IN
TO IMPEDANCE
±10V V
IN
AGND CAP 8.88kΩ
±10V AGND V
IN
CAP 8.88kΩ
±5V V
IN
V
IN
CAP 6.08kΩ
0V to 8.192V AGND AGND V
IN
5.95kΩ
Figure 29. Offset/Gain Circuits for Unipolar Input Ranges
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