G1421 Datasheet, PDF (17/24 Pages) Global Mixed-mode Technology Inc – 2W Stereo Audio Amplifier with No Headphone Coupling Capacitor Function

Global Mixed-mode Technology Inc.
Block Diagram
20k
21 RLINE IN
_
R IG H T
20 RHPIN
MUX
19 RBYPASS
+
11 MUTEIN
9 MUTEOUT
8 SHUTDOW N
23 VOL
BIAS C IRCU ITS
MODES CONTROL
C IR C U ITS
6 LBYPASS
5 LHPIN
4 LLINE IN
LEFT
MUX
+
_
20k
ROUT+ 22
ROUT- 15
RVDD 18
HP-IN 17
HP/LINE 16
SE/BTL 14
TJ
2
LVDD
7
LOUT- 10
LOUT+
3
G1421
Parameter Measurement Information
11 MUTEIN
8 SHUTDOWN
23 VOL
CB
4.7µF
CI
AC source
RI
6 LBYPASS
5 LHPIN
4 LLINEIN
LEFT
MUX
HP-IN 17
HP/LINE ₁₆
SE/BTL 14
LVDD
7
RL 4/8/32ohm
+
LOUT- 10
_
LOUT+ 3
RF
BTL Mode Test Circuit
Ver: 1.6
Aug 04, 2005
TEL: [phone]
http://www.gmt.com.tw
17