G1420 Datasheet, PDF (17/20 Pages) Global Mixed-mode Technology Inc – 2W Stereo Audio Amplifier

Global Mixed-mode Technology Inc.
Application Circuits
G1420
RFL
20KΩ
CIR
CFR
AUDIO SOURCE _1µF
4.7µF
GND/HS
1
TJ
2
LOUT+
3
RIR _LLINEIN
4
10KΩ
LHPIN
5
LBYPASS
6
RBYPASS
19
SHUTDWON
8
MUTE OUT ₉
LOUT-
10
MUTE IN
11
GND/HS
12
G1420
COUTR
220µF
GND/HS
24
NC
23
ROUT+
22
RLINEIN ^RIL
21
10KΩ
20 ^RHPIN
LVDD
7
RVDD
18
NC
17
CSR
4.7µF
16 ^HP/LINE
ROUT-
15
SE/BTL
14
GND/HS
13
1KΩ
CIL
RFL 20KΩ CFL
1µF _{AUDIO SOURCE}
R
4.7µF
100KΩ
R
100KΩ
0.1µF
COUTR
220µF
1KΩ
1
3
4
2
PHONOJACK
Logical Truth Table
SE/ BTL
X
Low
High
INPUTS
HP/ LINE ^{Mute In}
X
----
X
High
X
High
Low
Low
Low
Shutdown
High
----
----
Low
OUTPUT
Mute Out
----
High
High
Low
Low
High
Low
Low
Low
High
Low
Low
Low
Low
High
High
Low
Low
Low
Input
X
X
X
L/R Line
L/R HP
L/R Line
L/R HP
AMPLIFIER STATES
L/R Out+ L/R Out-
----
----
VDD/2
VDD/2
VDD/2
----
BTL
Output
BTL
Output
BTL
Output
BTL
Output
SE
----
Output
SE
----
Output
Mode
Mute
Mute
Mute
BTL
BTL
SE
SE
Ver: 1.5
Aug 04, 2005
TEL: [phone]
http://www.gmt.com.tw
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