OPA227 Datasheet, PDF (25/46 Pages) Burr-Brown (TI) – High Precision, Low Noise OPERATIONAL AMPLIFIERS

www.ti.com
OPA227, OPA2227, OPA4227
OPA228, OPA2228, OPA4228
SBOS110B – MAY 1998 – REVISED JUNE 2015
Application Information (continued)
8.1.3 High Performance Synchronous Demodulator
20pF
TTL INPUT GAIN
“1”
+1
“0”
–1
9.76kΩ
500Ω
Input
10kΩ
2
D1
D2
6
4.99kΩ OPA227
3
8
S1
S2
1
Balance
Trim
Output
TTL DG188
In
4.75kΩ
1kΩ
Offset
Trim _+VCC
4.75kΩ
Figure 47. High Performance Synchronous Demodulator
8.1.4 Headphone Amplifier
+15V
1kΩ
Audio
In
0.1μF
1kΩ
1/2
OPA2227
200Ω
200Ω
This application uses two op amps
in parallel for higher output current drive.
1/2
OPA2227
0.1μF
–15V
Figure 48. Headphone Amplifier
To
Headphone
Copyright © 1998–2015, Texas Instruments Incorporated
Submit Documentation Feedback
25
Product Folder Links: OPA227 OPA2227 OPA4227 OPA228 OPA2228 OPA4228