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| YOUDA INTEGRATED CIRCUIT YD7000 POWER AMPLIFIER FOR HEADPHONE STEREOS 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 86-755-83740369 13823533350 Fax 86-755-83741418 Ver 3.1 1 of 4 2004-9-20 YOUDA INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Allowable Power Dissipation Operating Temperature Storage Temperature (Tamb=25ae ) VALUE 4.5 300 -20 +75 -40 +125 YD7000 SYMBOL Vcc PD Topr Tstg UNIT V mW ae ae RECOMMENDED OPERATING CONDITIONS PARAMETER Supply Voltage Operating Voltage Range Recommended Load Resistance SYMBOL Vcc Vcc (Tamb=25ae VALUE 3.0 1.6 16 4.0 32 ) UNIT V V | RL ELECTRICAL CHARACTERISTICS (Tamb=25ae , 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, pin10u GND Vcc=4.5V, pin1u 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, pin1u GND, VIN=-10dB 20 40 45 0.5 40 50 60 62 100 |I -80 30 29 32 32 MIN TYP 5.4 1.1 MAX 10 2.0 1.0 |I 34 34 1.0 1.0 1.5 UNIT mA mA A dB dB dB dB % mW dB dB V dB WuXi YouDa Electronics Co., Ltd 2 of 4 Website: www.e-youda.com 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, pin10u VIN=-10dB Vcc=1.5V, V5R 0.85V Vcc=1.5V, V5Q 0.1V Vcc=1.5V,V5R 0.85V Vcc=1.5V, V5Q 0.1V GND, -80 0.05 0.5 0.6 0.2 0.5 0.65 1.0 |I 1.0 |I dB A V A V APPLICATION CIRCUIT Vcc MT/SW ON OFF Vin1 1 OFF P/SW 10 ON 2 Vin2 3 4 + 22|I 9 4.7| + 220|I RL 16| 0.1|I 0.1|I 8 7 6 4.7| + 220|I RL 16| 5 + 47|I WuXi YouDa Electronics Co., Ltd 3 of 4 Website: www.e-youda.com YOUDA INTEGRATED CIRCUIT YD7000 OUTLINE DRAWING WuXi YouDa Electronics Co., Ltd 4 of 4 Website: www.e-youda.com |
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