YOUDA INTEGRATED CIRCUIT
YD7000
POWER AMPLIFIER
FOR HEADPHONE STEREOS—YD7000
DESCRIPTION
The YD7000 is a low power audio amplifier integrated circuit for headphone. It provides differential speaker
outputs to maximize output swing at low supply voltages.
FEATURES
*Low current consumption.
*16Ω load drive capability.
*Excellent reduced voltage characteristics.
*Excellent
power supply ripple rejection.
*Minimum number of external pares required (no input capacitor, feedback capacitor required).
*Applicable to radio sets because of high voltage gain.
*Less harmonic interference in radio band.
*On-chip power switch function, muting function.
BLOCK DIAGRAM
MUTE
SWITCH
10
MUTE
CIRCUIT
Amp1
POWER
SWITCH
1
POWER
SWITCH
2
IN1
3
PRE
GND
4
IN2
5
REF
Amp2
OUT1
9
POWER
GND
8
OUT2
7
Vcc
6
BIAS
WuXi YouDa Electronics Co., Ltd
Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China
Tel: 86-510-5205117 86-510-5205108
Fax: 86-510-5205110
Website: www.e-youda.com
SHENZHEN OFFICE Tel： 86-755-83740369
13823533350 Fax： 86-755-83741418
Ver 3.1
1 of 4
2004-9-20
WEIDA [ WEIDA SEMICONDUCTOR, INC. ]
