G1428 Datasheet PDF | Global Mixed-mode Technology





(PDF) G1428 Datasheet

Part Number G1428
Description 2W Stereo Audio Amplifier
Manufacture Global Mixed-mode Technology
Total Page 16 Pages
PDF Download Download G1428 Datasheet PDF

Features: Global Mixed-mode Technology Inc. G1428 2W Stereo Audio Amplifier 2X6X12X24X Selectable Gain Settings Features Inte rnal Gain Control, Which Eliminates Ext ernal Gain-Setting Resistors „ Depop C ircuitry Integrated „ Output Power at 1% THD+N, VDD=5V --2.0W/CH (typical) in to a 4Ω Load --1.2W/CH (typical) into a 8Ω Load „ Bridge-Tied Load (BTL), S ingle-Ended (SE) „ Stereo Input MUX ww w.DataSheet4U.com „ PC-Beep Input „ F ully differential Input „ Shutdown Con trol Available „ Surface-Mount Power P ackage 24-Pin TSSOP-P „ General Descr iption G1428 is a stereo audio power am plifier in 24pin TSSOP thermal pad pack age. It can drive 2.0W continuous RMS p ower into 4Ω load per channel in Bridg e-Tied Load (BTL) mode at 5V supply vol tage. Its THD is smaller than 1% under the above operation condition. To simpl ify the audio system design in the note book application, G1428 supports the Br idge-Tied Load (BTL) mode for driving t he speakers, Single-End (SE) mode for driving the headphone. For the low cu.

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G1428 datasheet
Global Mixed-mode Technology Inc.
2W Stereo Audio Amplifier
2X\6X\12X\24X Selectable Gain Settings
G1428
Features
„ Internal Gain Control, Which Eliminates Exter-
nal Gain-Setting Resistors
„ Depop Circuitry Integrated
„ Output Power at 1% THD+N, VDD=5V
--2.0W/CH (typical) into a 4Ω Load
--1.2W/CH (typical) into a 8Ω Load
„ Bridge-Tied Load (BTL), Single-Ended (SE)
www.DataSheet„4U.cSotmereo Input MUX
„ PC-Beep Input
„ Fully differential Input
„ Shutdown Control Available
„ Surface-Mount Power Package
24-Pin TSSOP-P
Applications
„ Stereo Power Amplifiers for Notebooks or
Desktop Computers
„ Multimedia Monitors
„ Stereo Power Amplifiers for Portable Audio
Systems
General Description
G1428 is a stereo audio power amplifier in 24pin
TSSOP thermal pad package. It can drive 2.0W 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, G1428 supports the Bridge-Tied
Load (BTL) mode for driving the speakers, Single-End
(SE) mode for driving the headphone. For the low
current consumption applications, the SHDN mode is
supported to disable G1428 when it is idle. The current
consumption can be reduced to 160µA (typically).
Amplifier gain is internally configured and controlled by
two terminals (GAIN0, GAIN1). BTL gain settings of 2,
6, 12, 24V/V are provided, while SE gain is always
configured as 1V/V for headphone driving. G1428 also
supports two input paths, that means two different
amplitude AC signals can be applied and chosen by
setting HP/ LINE pin. It enhances the hardware de-
signing flexibility.
Ordering Information
ORDER
NUMBER
G1428F31U
Note: U: Tape & Reel
(FD): Thermal Pad
ORDER NUMBER
(Pb free)
G1428F31Uf
Pin Configuration
MARKING
G1428
TEMP.
RANGE
-40°C to +85°C
PACKAGE
TSSOP-24 (FD)
GND/HS 1
GAIN0 2
GAIN1 3
LOUT+ 4
LLINEIN 5
LPHIN 6
PVDD 7
RIN 8
LOUT- 9
LIN 10
BYPASS 11
GND/HS 12
Top View
TSSOP-24
24 GND/HS
23 RLINEIN
22 SHUTDOWN
21 ROUT+
20 RHPIN
19 VDD
18 PVDD
17 HP/LINE
16 ROUT-
15 SE/BTL
14 PC-BEEP
13 GND/HS
Ver: 1.2
Mar 31, 2005
1
Thermal
Pad
14
Bottom View
TEL: 886-3-5788833
http://www.gmt.com.tw

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