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G1412 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – Ground-Reference Popless Stereo Headphone Driver | |||
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Global Mixed-mode Technology Inc.
G1412
Ground-Reference Popless Stereo Headphone Driver
Features
 7mA Quiescent Current.
 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.
 Over-Temperature Protection
 UVLO Embedded
 TDFN2X2-8 &TQFN3X3-16 Packages
Applications
 Cellular Phone
 Notebooks
 PDAs
 MP3 Players
 Portable Audio Equipment
General Description
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.
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.
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.
Ordering Information
ORDER
NUMBER
G1412RC1U
G1412R41U
Note: RC :TDFN2X2-8
1: Bonding Code
U: Tape & Reel
MARKING
1412
1412
R4:TQFN3X3-16
TEMP.
RANGE
-40°C ~ +85°C
-40°C ~ +85°C
PACKAGE
(Green)
TDFN2X2-8
TQFN3X3-16
REMARK
OBSOLETE
Pin Configuration
G1412
PGND 1
OUTL 2
NVDD 3
OUTR 4
Thermal
Pad
8 PVDD
7 INL
6 INR
5 SHDN
TDFN2X2-8
Typical Application Circuit
RI
LEFT AUDIO
INPUT
RF
LEFT AUDIO
OUTPUT
+
PGND 13
NC 14
PVDD 15
SHDNL 16
Thermal
Pad
8 INR
7 OUTR
6 SVSS
5 OUTL
RI
RIGHT AUDIO
INPUT
GAIN = - ( RF )
RI
+
RIGHT AUDIO
OUTPUT
RF
G1412 TQFN3X3-16
Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.
Ver: 1.5
Sep 30, 2009
1
TEL: 886-3-5788833
http://www.gmt.com.tw
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