Datasheet

Standard Gain Configuration
3-2
3.1 Standard Gain Configuration
The THS6043EVM default configuration is a fully differential input, fully
differential output gain stage as shown in Figure 3−1. This gain is calculated
according an equation that is similar to the one that describes an
instrumentation amplifier:
(1)Differential gain +
V
O
(diff)
V
I
(diff)
+ 1 )
2 R5
R7
Where:
R5 = R16
Series resistors R17 and R18 affect output voltage at J6 and J7. Designers
need to take the voltage divider law into account for their load impedance and
R17/R18.
Figure 3−1. Default Configuration Operation
R16
J1
IN1
TP1
R18
TP4
OUT2
R5
TP3
R17
R1
+
−
U1B
THS6043
12
11
13
TP2
OUT1
+
−
U1A
THS6043
2
3
1
14
4
J6
OUT1
R24
0
R23
0
R12
+V
−V
Z1
0
Z2
0
J7
OUT2
J2
IN2
C3
R7
49.9 W
750 W
49.9 W
210 W
1 mF
750 W
49.9 W
49.9 W