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G1422 Datasheet, PDF (1/15 Pages) Global Mixed-mode Technology Inc – 2W Stereo Audio Amplifier
Global Mixed-mode Technology Inc.
2W Stereo Audio Amplifier
G1422
Features
„ Depop Circuitry Integrated
„ Output Power at 1% THD+N, VDD=5V
--2W/CH (typical) into a 4Ω Load
--1.2W/CH (typical) into a 8Ω Load
„ Bridge-Tied Load (BTL), Single-Ended (SE)
„ Shutdown Control Available
„ Thermal protection
„ Surface-Mount Power Package
20-Pin TSSOP-P
Applications
„ Stereo Power Amplifiers for Notebooks or
Desktop Computers
„ Multimedia Monitors
„ Stereo Power Amplifiers for Portable Audio
Systems
General Description
The G1422 is a stereo audio power amplifier in 20pin
TSSOP thermal pad package. It can drive 2W con-
tinuous RMS power into 4Ω load per channel in
Bridge-Tied Load (BTL) mode at 5V supply voltage. Its
THD is smaller than 1% under the above operation
condition. To simplify the audio system design in the
notebook application, the G1422 supports the Bridge-
Tied Load (BTL) mode for driving the speakers, Sin-
gle-End (SE) mode for driving the headphone. For the
low current consumption applications, the SHDN mode
is supported to disable the G1422 when it is idle. The
current consumption can be further reduced to below
2µA.
Ordering Information
ORDER
NUMBER
G1422F2U
Note:F2: TSSOP-20 (FD)
U: Tape & Reel
ORDER NUMBER
(Pb free)
G1422F2Uf
Pin Configuration
MARKING
G1422
TEMP.
RANGE
-40°C to +85°C
PACKAGE
TSSOP-20 (FD)
SHUTDOWN 1
GND/HS 2
+OUTA 3
VDD 4
-OUTA 5
-INA 6
GND/HS 7
+INA 8
GND/HS 9
GND/HS 10
G1422
20 HP-IN
19 GND/HS
18 +OUTB
17 VDD
16 -OUTB
15 -INB
14 BYPASS
13 +INB
12 GND/HS
11 GND/HS
Top View
TSSOP-20 (FD)
Thermal
Pad
Bottom View
Note: Recommend connecting the Thermal Pad to the GND for excellent power dissipation.
Ver: 1.2
Jun 29, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
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