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Global Mixed-mode Technology Inc. G1454/G1454L
2.0W Stereo Audio Amplifier with Shutdown Mode
Features
„ Depop Circuitry Integrated
„ 3V to 5.5V Operation
„ Output Power at 10% THD+N, VCC=5V
--2.1W (typical) into a 3Ω Load
„ Output Power at 1% THD+N, VCC=5V
--1.45W (typical) into a 4Ω Load
--1.15W (typical) into a 8Ω Load
„ Output Power at 10% THD+N, VCC=5V
--2W (typical) into a 4Ω Load
--1.47W (typical) into a 8Ω Load
„ Stereo Bridge-Tied Load (BTL)
„ Shutdown Control Available
„ TQFN3X3-16 Package Available
Applications
„ PDAs
„ Portable Devices
„ Notebook
General Description
The G1454/G1454L is a stereo audio power amplifier
in 16 pin TQFN3X3-16 with thermal pad package. It
can drive 1.45W continuous RMS power into 4Ω load
in Bridge-Tied Load (BTL) mode at 5V supply voltage.
Its THD is smaller than 1% under the above operation
condition. For the low current consumption applica-
tions, the SHUTDOWN mode is supported to disable
the G1454/G1454L when it is idle. The current con-
sumption can be further reduced to below 1µA.
Giving the SHUTDOWN pin low level will drive the
G1454L entering the shutdown.
Giving the SHUTDOWN pin high level will drive the
G1454 entering the shutdown
Ordering Information
ORDER
NUMBER
MARKING
TEMP.
RANGE
G1454R41U 1454 -40°C to +85°C
G1454LR41U 1454L -40°C to +85°C
Note: R4: TQFN3X3-16
1: Bonding Code
U: Tape & Reel
PACKAGE
(Green)
TQFN3X3-16
TQFN3X3-16
Pin Configuration
LVO1 1
VCC 2
VSS 3
LVO2 4
Thermal
Pad
12 RVO1
11 VCC
10 VSS
9 RVO2
G1454 TQFN3X3-16
LVO1 1
VCC 2
VSS 3
LVO2 4
Thermal
Pad
12 RVO1
11 VCC
10 VSS
9 RVO2
G1454L TQFN3X3-16
Ver: 1.1
Apr 29, 2009
TEL: 886-3-5788833
http://www.gmt.com.tw
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