Figure 25. lm 1877 schematic, An168 – Cirrus Logic AN168 User Manual
Page 35
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AN168
AN168REV2
35
+26dB
-17dB
2 Watts into 4 ohms
Gain = +9dB
Gain = [R2/(R1+R2)]*[1+R3/R5+R6/R5]
CS6422_A0
+14V
R2
12.1K
R1
73.2K
+
C3
10uF
C9
0.1uF
R9
2.7ohm
LS1
4 Ohm SPEAKER
C8
0.1uF
+
C5
100uF
R4
1M
R7
1M
R3
12.1K
R5
1.33K
R6
13.3K
R8
2.7ohm
C6
0.1uF
C1
6200pF
+
C7
100uF
+
-
+
-
U?
LM1187
8
1
3-5,10-12
13
2
14
6
7
9
C2
3900pF
Fi
gure 25
. LM 187
7
Schema
tic
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