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G1412

更新时间: 2024-12-01 01:25:31
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描述
Ground-Reference Popless Stereo Headphone Driver

G1412 数据手册

  
Global Mixed-mode Technology Inc.  
G1412  
Ground-Reference Popless Stereo Headphone Driver  
Features  
General Description  
„
„
7mA Quiescent Current.  
The G1412 stereo headphone driver is designed for  
portable equipment where board space is limited. The  
G1412 uses the dual external power supplies  
PVDD/NVDD to produce a ground-reference output,  
eliminating the need for large DC-blocking capacitors,  
saving cost, board space, and component height.  
Ground-Referenced Outputs Eliminate DC-Bias  
Voltages on Headphone Ground Pin  
Popless Function Embedded  
70mW Per Channel into 16Ω loads  
Low Distortion  
„
„
„
„
„
„
„
„
„
Large Output Voltage Swing.  
±1.8V to ±3.6V Dual Power Operating Range  
Low Power Consumption.  
The G1412 is a dual channel, low voltage, low power,  
and high performance amplifiers, which can deliver up  
to 70mW per channel into a 16Ω load with small THD+N  
performance.  
Over-Temperature Protection  
UVLO Embedded  
TDFN2X2-8 &TQFN3X3-16 Packages  
The G1412 operates from a dual ±1.8V to ±3.6V sup-  
plies, consumes only 7mA of supply current. With ex-  
cellent AC performance (small THD), it can be designed  
into a wide range of headphone driving application.  
Applications  
„ Cellular Phone  
„ Notebooks  
„ PDAs  
„ MP3 Players  
„
Portable Audio Equipment  
Ordering Information  
ORDER  
TEMP.  
RANGE  
PACKAGE  
(Green)  
MARKING  
REMARK  
NUMBER  
G1412RC1U  
G1412R41U  
1412  
1412  
-40°C ~ +85°C  
-40°C ~ +85°C  
TDFN2X2-8  
TQFN3X3-16  
OBSOLETE  
Note: RC :TDFN2X2-8  
1: Bonding Code  
U: Tape & Reel  
R4:TQFN3X3-16  
Pin Configuration  
Typical Application Circuit  
G1412  
1
2
3
4
PGND  
OUTL  
NVDD  
OUTR  
PVDD  
8
7
6
5
RF  
INL  
Thermal  
Pad  
INR  
SHDN  
RI  
LEFT AUDIO  
OUTPUT  
TDFN2X2-8  
LEFT AUDIO  
INPUT  
+
+
RI  
RIGHT AUDIO  
INPUT  
INR  
13  
8
7
6
5
PGND  
NC  
RIGHT AUDIO  
OUTPUT  
OUTR  
SVSS  
OUTL  
14  
15  
Thermal  
Pad  
PVDD  
RF  
RI  
)
GAIN =  
-
(
16  
SHDNL  
RF  
G1412 TQFN3X3-16  
Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.  
TEL: 886-3-5788833  
http://www.gmt.com.tw  
Ver: 1.5  
Sep 30, 2009  
1

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