+5V
7
VS
INA152
2
5
6
1
Transducer
or
Analog
Signal
12 Bits
Out
ADS7806
0V-4V
Input
3
4
–5V
Eliminates errors due to different grounds.
FIGURE 20. Differential Input Data Acquisition.
INA152
2
5
6
V1
DG188
VO
3
1
Logic In
VO
–V1
+V1
1
0
1
Logic
In
FIGURE 21. Digitally Controlled Gain of ±1 Amplifier.
INA152
BUF634 inside feedback
loop contributes no error.
INA152
R1
R2
5
6
2
2
3
5
–In
10pF
D1
R3
R4
3
1
V0 = |V1|
6
1
BUF634
VO
D2
OPA130
RL
V1
Input
R5
2kΩ
+In
FIGURE 22. Precision Absolute Value Buffer.
FIGURE 23. High Output Current Precision Difference
Amplifier.
INA152
SBOS184
13
TI [ TEXAS INSTRUMENTS ]
