Cirrus Logic AN168 - Manual (Page 35)

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