Datasheet > G1421

G1421

更新时间： 2024-11-18 03:38:23

品牌	Logo	应用领域
致新 - GMT		音频放大器
页数	文件大小	规格书
24页	432K
描述
2W Stereo Audio Amplifier with No Headphone Coupling Capacitor Function

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中文翻译

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G1421 数据手册

Global Mixed-mode Technology Inc.

G1421

2W Stereo Audio Amplifier with No Headphone

Coupling Capacitor Function

Features

General Description

Depop Circuitry Integrated

G1421 is a stereo audio power amplifier in 24pin

TSSOP thermal pad package. It can drive 1.8W 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, G1421 supports the Bridge-Tied

Load (BTL) mode for driving the speakers, Single-End

(SE) mode for driving the headphone. In the HP-IN

mode, it can support a DC value to the phone-jacket

and drive the headphone without the audio amplifier

outputs coupling capacitors. G1421 can mute the out-

put when Mute-In is activated. For the low current

consumption applications, the SHDN mode is sup-

ported to disable G1421 when it is idle. The current

consumption can be further reduced to below 5µA.

Output Power at 1% THD+N, VDD=5V

--1.8W/CH (typical) into a 4Ω Load

--1.2W/CH (typical) into a 8Ω Load

Eliminates Headphone Amplifier Output Cou-

pling Capacitors

Maximum Output Power Clamping Circuitry

Integrated

Bridge-Tied Load (BTL), Single-Ended (SE),

and Stereo Headphone Amplifier (HP-IN) modes

Supported

Stereo Input MUX

Mute and Shutdown Control Available

Surface-Mount Power Package

24-Pin TSSOP-P

G1421 also supports two input paths, that means two

different gain loops can be set in the same PCB and

Applications

Stereo Power Amplifiers for Notebooks or

Desktop Computers

choosing either one by setting HP/LINE pin. It en-

hances the hardware designing flexibility. G1421 also

supports an extra function -- the maximum output

power clamping function to protect the speakers or

headphones from burned-out.

Multimedia Monitors

Stereo Power Amplifiers for Portable Audio

Systems

Ordering Information

ORDER

NUMBER

G1421

ORDER NUMBER

(Pb free)

TEMP.

PACKAGE

RANGE

G1421f

-40°C to +85°C

TSSOP-24 (FD)

Note: U: Tape & Reel

(FD): Thermal Pad

Pin Configuration

G1421

GND/HS

VOL

GND/HS

LOUT+

LLINEIN

22 ROUT+

RLINEIN

20 RHPIN

LHPIN

LBYPASS

LVDD

Thermal

Pad

19 RBYPASS

RVDD

HP-IN

SHUTDOWN

MUTE OUT

LOUT-

HP/LINE

15 ROUT-

14 SE/BTL

MUTE IN 11

GND/HS

Top View

Bottom View

TSSOP-24 (FD)

Note: Recommend connecting the Thermal Pad to the GND for excellent power dissipation.

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver: 1.6

Aug 04, 2005

12 3 4 5 6 7...24

中文翻译

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与G1421相关器件

型号	品牌	获取价格	描述	数据表
G1421F	GMT	获取价格	2W Stereo Audio Amplifier with No Headphone Coupling Capacitor Function
G1422	GMT	获取价格	2W Stereo Audio Amplifier
G1422F2U	GMT	获取价格	2W Stereo Audio Amplifier
G1422F2UF	GMT	获取价格	2W Stereo Audio Amplifier
G1423	ETC	获取价格	Heyco Rubber Grommets
G1426	GMT	获取价格	2.2W Stereo Audio Amplifier
G1426D5T	GMT	获取价格	2.2W Stereo Audio Amplifier
G1426D5U	GMT	获取价格	2.2W Stereo Audio Amplifier
G1426D5UF	GMT	获取价格	Audio Amplifier, 1 Func, PDSO20
G1426F2T	GMT	获取价格	2.2W Stereo Audio Amplifier

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