Global Mixed-mode Technology Inc.
G1421
Block Diagram
20k
21
20
RLINEIN
RHPIN
_
+
22
15
ROUT+
ROUT-
RIGHT
MUX
RBYPASS
19
RVDD
HP-IN
18
17
16
14
2
MUTEIN
11
MUTEOUT
SHUTDOWN
VOL
HP/LINE
SE/BTL
TJ
9
8
BIAS CIRCUITS
MODES CONTROL
CIRCUITS
23
LVDD
7
6
LBYPASS
+
10
3
LOUT-
LOUT+
LHPIN
5
4
_
LEFT
MUX
LLINEIN
20k
Parameter Measurement Information
11
HP-IN
17
16
MUTEIN
HP/LINE
8
SHUTDOWN
VOL
14
7
23
SE/BTL
LVDD
RL 4/8/32ohm
6
LBYPASS
CB
4.7µF
LOUT-
LOUT+
10
3
+
_
5
4
LHPIN
CI
LEFT
MUX
LLINEIN
AC source
RI
RF
BTL Mode Test Circuit
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.6
Aug 04, 2005
17