OPA1678 Datasheet, PDF (26/41 Pages) Texas Instruments – Low-Distortion Audio Operational Amplifiers

OPA1678, OPA1679
SBOS855 – FEBRUARY 2017
Other Applications (continued)
Input Differential
Audio Signals
2
3
1
XLR Connector
3
2
1
XLR Connector
C1 10 F
R1
100 k
R3 1 M
R2
100 k
C2 10 F
C3 10 F
R4
100 k
R6 1 M
R5
100 k
C4 10 F
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18 V
C5 1 F
-18 V
C7 1 F
C6 0.1 F
C8 0.1 F
1 VCC
VEE 14
2 IN+ A
OUT A ¹³
3 COM A
REF A 12
4 IN- A
VMID(IN) 11
5 IN- B
VMID(OUT) 10
6 COM B
REF B 9
7 IN+ B
OUT B 8
INA1650
R7
1M
-18 V
18 V
½
OPA1678
C9
100 nF
Output Single-Ended
Audio Signals
½
OPA1678
C10
100 nF
R8
1M
Copyright © 2017, Texas Instruments Incorporated
Figure 41. Differential Line Receiver With AC-Coupled Outputs
26
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Copyright © 2017, Texas Instruments Incorporated