Datasheet

+
-
+V
OUT
+V
IN
R
5A
C
3A
, R
4A,
R
5B,
R
9B,
C
3B
= 0 (SHORT)
R
12A
R
14A
AMP
-
+
-V
OUT
R
14B
AMP
V
+
R
1
R
6A
C
1
R
2
R
6B
R
C4
R
11B
-V
IN
R
8A
R
7A
R
7B
+
-
V
DIFF
Applications Using Two Amplifiers www.ti.com
4 Applications Using Two Amplifiers
4.1 Two-Amplifier Filters
Filters using two amplifiers can be built by connecting the output of Amp A to the input of Amp B.
4.2 Single-Ended to Differential Conversion
The circuit in Figure 12 will convert a single-ended signal to a differential signal. This is done by using the
combination of an inverting amplifier and a non-inverting amplifier. Each amplifier generates output signals
of equal magnitude but of opposite polarity. This topology is useful in applications where the signal source
is single-ended, but the ADC requires a differential input. The board will need to be modified by
connecting Input A to Input B with a jumper wire.
Figure 12. Single-Ended to Differential Conversion
8
AN-1606 551012875, 551012922 Universal Op Amp Evaluation Boards SNOA487C–May 2007–Revised May 2013
(SOT-23 and SC-70)
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