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| 型号： | G1421 |
| 英文描述： | 2-W stereo audio power OP amplifier with no headphone coupling capacitor function.|OP Amplifier Series |
| 中文描述： | 2 - W型立体声音频功率运算放大器，耦合电容没有耳机功能。|任择议定书放大器系列 |
| 文件页数： | 1/31页 |
| 文件大小： | 825K |
| 代理商： | G1421 |
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Ver: 1.1
May 23, 2003
TEL: 886-3-5788833
http://www.gmt.com.tw
1
G1421
Global Mixed-mode Technology Inc.
2W Stereo Audio Amplifier With No Headphone
Coupling Capacitor Function
Features
Depop Circuitry Integrated
Output Power at 1% THD+N, VDD=5V
--1.8W/CH (typical) into a 4
Load
--1.2W/CH (typical) into a 8
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
Applications
Stereo Power Amplifiers for Notebooks or
Desktop Computers
Multimedia Monitors
Stereo Power Amplifiers for Portable Audio
Systems
General Description
G1421 is a stereo audio power amplifier in 24pin
TSSOP thermal pad package. It can drive 1.8W con-
tinuous RMS power into 4
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
output 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.
G1421 also supports two input paths, that means two
different gain loops can be set in the same PCB and
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.
Ordering Information
ORDER NUMBER
G1421
TEMP. RANGE
-40°C to +85°C
PACKAGE
TSSOP-24L
Pin Configuration
RLINEIN
RHPIN
HP/LINE
SE/BTL
GND/HS
LLINEIN
LHPIN
SHUTDOWN
MUTE IN
G1421
GND/HS
TSSOP-24L
13
22
20
16
14
5
6
9
12
1
4
3
2
TJ
ROUT+
14
Pad
Top View
Bottom View
GND/HS
GND/HS
RBYPASS
RVDD
HP-IN
ROUT-
LOUT+
LBYPASS
LVDD
MUTE OUT
LOUT-
24
23
21
19
18
17
15
7
8
10
11
VOL
Thermal
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相关代理商/技术参数 |
参数描述 |
|---|---|
| G1421F | 制造商:GMT 制造商全称:Global Mixed-mode Technology Inc 功能描述:2W Stereo Audio Amplifier with No Headphone Coupling Capacitor Function |
| G1422 | 功能描述:安装硬件 RG 2.5-68-2 2.875 DIA BLACK RoHS:否 制造商:Harwin 类型:SMT Cable Clip 材料:Phosphor Bronze 安装孔大小: 长度:5 mm 外径: 内径: 厚度: 电镀:Tin 螺纹大小: |
| G1-422-057 | 制造商:HECON / DANAHER 功能描述: |
| G1-422-122 | 制造商:HECON / DANAHER 功能描述: |
| G1422E10NF1.5A | 制造商:Glenair Inc 功能描述:ADAPTER - Bulk 制造商: 功能描述: 制造商:undefined 功能描述: |
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