Datasheet > G1428F31UF

G1428F31UF

更新时间： 2024-11-17 21:55:51

品牌	Logo	应用领域
致新 - GMT		音频放大器
页数	文件大小	规格书
16页	339K
描述
2W Stereo Audio Amplifier

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数据手册

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G1428F31UF 数据手册

G1428

Global Mixed-mode Technology Inc.

2W Stereo Audio Amplifier

2X\6X\12X\24X Selectable Gain Settings

Features

General Description

Internal Gain Control, Which Eliminates Exter-

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).

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)

Stereo Input MUX

PC-Beep Input

Fully differential Input

Shutdown Control Available

Surface-Mount Power Package

24-Pin TSSOP-P

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

Applications

Stereo Power Amplifiers for Notebooks or

Desktop Computers

Multimedia Monitors

Stereo Power Amplifiers for Portable Audio

Systems

setting HP/LINE pin. It enhances the hardware de-

signing flexibility.

Ordering Information

ORDER

NUMBER

G1428F31U

ORDER NUMBER

TEMP.

RANGE

MARKING

PACKAGE

(Pb free)

G1428F31Uf

G1428

-40°C to +85°C

TSSOP-24 (FD)

Note: U: Tape & Reel

(FD): Thermal Pad

Pin Configuration

GND/HS

23 RLINEIN

GND/HS

GAIN0

GAIN1

LOUT+

LLINEIN

LPHIN

PVDD

RIN

SHUTDOWN

21 ROUT+

20 RHPIN

VDD

Thermal

Pad

PVDD

HP/LINE

ROUT-

SE/BTL

LOUT-

LIN 10

BYPASS

14 PC-BEEP

GND/HS

GND/HS 12

Top View

TSSOP-24

Bottom View

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver: 1.2

Mar 31, 2005

12 3 4 5 6 7...16

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