G1432 Datasheet, PDF (1/15 Pages) Global Mixed-mode Technology Inc – 2W Stereo Audio Amplifier

Global Mixed-mode Technology Inc.
2W Stereo Audio Amplifier
G1432
Features
„ Depop Circuitry Integrated
„ Output Power at 1% THD+N, VDD=5V
--1.8W/CH (typical) into a 4Ω Load
--1.2W/CH (typical) into a 8Ω Load
„ Maximum Output Power Clamping Circuitry
Integrated
„ Bridge-Tied Load (BTL)
„ Stereo Input MUX
„ Mute and Shutdown Control Available
„ Surface-Mount Power Package
24-Pin TSSOP-P & 24-Pin QFN Available
Applications
„ Stereo Power Amplifiers for Notebooks or
Desktop Computers
„ Multimedia Monitors
„ Stereo Power Amplifiers for Portable Audio
Systems
Pin Configuration
General Description
The G1432 is a stereo audio power amplifier in 24pin
TSSOP thermal pad package or 24pin QFN package.
It can drive 1.8W continuous 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. The G1432 can mute the
output when Mute is activated. For the low current
consumption applications, the SHDN mode is sup-
ported to disable the G1432 when it is idle. The cur-
rent consumption can be further reduced to below
5µA.
The G1432 also supports two input paths, that means
two different gain loops can be set in the same PCB
and choosing either one by setting IN1 /IN2 pin. It en-
hances the hardware designing flexibility. The G1432
also supports an extra function -- the maximum output
power clamping function to protect the speakers from
burned-out.
Ordering Information
ORDER
NUMBER
MARKING
TEMP.
RANGE
PACKAGE
(Pb free)
G1432F3U G1432 -40°C to +85°C TSSOP-24 (FD)
G1432Q5U G1432 -40°C to +85°C QFN4X4-24
Note: F3:TSSOP-24 (FD) Q5:QFN4X4-24
U: Tape & Reel
G1432
GND/HS 1
NC 2
LOUT+ 3
LIN1 4
LIN2 5
LBYPASS 6
LVDD 7
SHUTDOWN 8
NC 9
LOUT- 10
NC 11
GND/HS 12
24 GND/HS
23 VOL
22 ROUT+
21 RIN1
20 RIN2
19 RBYPASS
18 RVDD
17 GND
16 IN1/IN2
15 ROUT-
14 MUTE
13 GND/HS
Top View
TSSOP-24 (FD)
Thermal
Pad
Bottom View
ROUT+ 19
VOL 20
GND/HS 21
GND/HS 22
NC 23
LOUT+ 24
Thermal
Pad
12 ROUT-
11 MUTE
10 GND/HS
9 GND/HS
8 NC
7 LOUT-
G1432 QFN4X4-24
Note: Recommend connecting the Thermal Pad to the GND for excellent power dissipation.
Ver: 1.1
Jun 21, 2006
TEL: [phone]
http://www.gmt.com.tw
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