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YOUDA INTEGRATED CIRCUIT
YD7000
POWER AMPLIFIER FOR HEADPHONE STEREOS¡ª
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.
YD7000
FEATURES
*Low current consumption. *16¦¸ 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£º 86-755-83740369 13823533350 Fax£º 86-755-83741418 Ver 3.1 1 of 4 2004-9-20
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YOUDA INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER Supply Voltage Allowable Power Dissipation Operating Temperature Storage Temperature (Tamb=25¡æ ) VALUE 4.5 300 -20¡« +75 -40¡« +125
YD7000
SYMBOL Vcc PD Topr Tstg
UNIT V mW ¡æ ¡æ
RECOMMENDED OPERATING CONDITIONS
PARAMETER Supply Voltage Operating Voltage Range Recommended Load Resistance SYMBOL
Vcc Vcc
(Tamb=25¡æ VALUE 3.0 1.6¡« 16¡« 4.0 32
) UNIT V V ¦¸
RL
ELECTRICAL CHARACTERISTICS
(Tamb=25¡æ , RL=16¦¸ PARAMETER , Rg=600¦¸ SYMBO L Icco(1) Quiescent Current Voltage Gain Voltage Gain Difference ¦¤ Total Harmonic Distortion Output Power Crosstalk Ripple Rejection Output Noise Voltage Power OFF Effect ¦¤ Icco(2) Icco(3) Gv(1) Gv(2) Gv(1) Gv(2) THD Po CT SVRR VNO VO(off) , See specified Test Circuit.) TEST CONDITIONS Vcc=2.4V, quiescent Vcc=4.5V, pin10¡ú GND Vcc=4.5V, pin1¡ú GND Vcc=2.4V, f=1kHz, Vo=-10dBm Vcc=1.6V, f=1kHz, Vo=-20dBm Vcc=2.4V, f=1kHz, Vo=-10dBm Vcc=1.6V, f=1kHz, Vo=-20dBm Vcc=2.0V, f=1kHz,Po=1mW Vcc=3.0V, f=1kHz, THD=10% Vcc=2.4V, f=100Hz, Rg=1K¦¸ Vo=-10dB Vcc=1.6V, f=100Hz, Rg=1 K¦¸ VR=-20dBm, BPF=100Hz Vcc=4.5V, Rg=1 K¦¸ BPF=20Hz¡« 20kHz Vcc=1.6V, f=100Hz, pin1¡ú GND, VIN=-10dB 20 40 45 0.5 40 50 60 62 100 ¦Ì -80 30 29 32 32 MIN TYP 5.4 1.1 MAX 10 2.0 1.0 ¦Ì 34 34 1.0 1.0 1.5 UNIT mA mA A dB dB dB dB % mW dB dB V dB
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YOUDA INTEGRATED CIRCUIT
YD7000
Muting Effect Power ON Current Sensitivity Power OFF Voltage Sensitivity Muting OFF Current Sensitivity Muting ON Voltage Sensitivity
VO(MT) I1(on) V1(off) I10(off) V10(on)
Vcc=1.6V, f=100Hz, pin10¡ú VIN=-10dB Vcc=1.5V, V5¨R 0.85V Vcc=1.5V, V5¨Q 0.1V Vcc=1.5V,V5¨R 0.85V Vcc=1.5V, V5¨Q 0.1V
GND,
-80 0.05 0.5 0.6 0.2 0.5 0.65 1.0 ¦Ì 1.0 ¦Ì
dB A V A V
APPLICATION CIRCUIT
Vcc
MT/SW ON OFF
Vin1
1
OFF P/SW
10
ON
2 Vin2 3 4
+
22¦Ì
9
4.7¦¸
+
220¦Ì RL 16¦¸ 0.1¦Ì 0.1¦Ì
8 7 6
4.7¦¸
+
220¦Ì RL 16¦¸
5
+
47¦Ì
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YOUDA INTEGRATED CIRCUIT
YD7000
OUTLINE DRAWING
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