Global Mixed-mode Technology Inc.
G1432L
2.6W Stereo Audio Amplifier
Features
Depop Circuitry Integrated
Output Power at 1% THD+N, VDD=5V
--2.0W/CH (typical) into a 4Ω Load
--1.3W/CH (typical) into a 8Ω Load
Output Power at 10% THD+N, VDD=5V
--2.6W/CH (typical) into a 4Ω Load
--1.6W/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
General Description
The G1432L is a stereo audio power amplifier in 24pin
TSSOP thermal pad package or 24pin QFN package.
It can drive 2.0W 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 G1432L can mute the
output when Mute is activated. For the low current
consumption applications, the SHDN mode is sup-
ported to disable the G1432L when it is idle. The cur-
rent consumption can be further reduced to below 5µA
when
SHUTDOWN
is held low.
The G1432L 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 enhances the hardware designing flexibility. The
G1432L also supports an extra function -- the maxi-
mum output power clamping function to protect the
speakers from burned-out.
Applications
Stereo Power Amplifiers for Notebooks or
Desktop Computers
Multimedia Monitors
Stereo Power Amplifiers for Portable Audio
Systems
Ordering Information
ORDER
NUMBER
G1432LF31U
G1432LQ51U
MARKING
G1432L
1432L
TEMP.
RANGE
-40°C to +85°C
-40°C to +85°C
PACKAGE
(Pb free)
TSSOP-24 (FD)
QFN4X4-24
REMARK
OBSOLETE
Note: F3:TSSOP-24 (FD) Q5:QFN4X4-24
1:Bonding Code
U: Tape & Reel
Pin Configuration
RBYPBASS
RIN1
RIN2
RVDD
GND
14
IN1/IN2
13
12
11
G1432L
GND/HS
NC
LOUT+
LIN1
LIN2
LBYPASS
LVDD
SHUTDOWN
NC
1
2
3
4
5
6
7
8
9
24
23
22
21
20
19
18
17
16
15
14
13
GND/HS
VOL
ROUT+
RIN1
RIN2
RBYPASS
RVDD
GND
IN1/IN2
ROUT-
MUTE
GND/HS
ROUT+
VOL
GND/HS
19
20
21
22
23
24
17
18
16
15
ROUT-
MUTE
GND/HS
GND/HS
NC
LOUT-
Thermal
Pad
GND/HS
NC
LOUT+
Thermal
Pad
10
9
8
7
LIN1
LBYPASS
GND/HS 12
Top View
TSSOP-24 (FD)
Bottom View
G1432L QFN4X4-24
Note: Recommend connecting the Thermal Pad to the GND for excellent power dissipation.
Ver: 1.2
Oct 31, 2008
TEL: 886-3-5788833
http://www.gmt.com.tw
1
SHUTDOWN
LVDD
LIN2
NC
LOUT- 10
NC 11
2
5
1
3
4
6
GMT [ GLOBAL MIXED-MODE TECHNOLOGY INC ]
