CO4808

CO4808 Dual 105mW Headphone Amplifier Features n n n n n SOP surface mount packaging Switch on/off click suppression Excellent power supply ripple rejection Unity-gain stable Minimum external components Description The CO4808 is a dual audio power amplifier capable of delivering 105mW per channel of continuous average power into a 16Ω load with 0.1% (THD+N) from a 5V power supply. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components using surface mount packaging. Since the CO4808 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The unity-gain stable CO4808 can be configured by external gain-setting resistors. Applications n Headphone Amplifier n Personal Computers n Portable electronic devices Key Specifications n THD+N at 1kHz at 105mW continuous average output power into 16Ω 0.1% (typ) n THD+N at 1kHz at 70mW continuous average output power into 32Ω 0.1% (typ) n Output power at 0.1% THD+N at 1kHz into 32Ω 70mW (typ) Ordering Information CO4808 X Blank: Sop-8 & Tube A: Sop-8 & Taping * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 1 of 4 Rev 1.0 May 18,2004 Fax:886-3-3521052 CO4808 Dual 105mW Headphone Amplifier Connection Diagrams SOP Package Top View Typical Application FIGURE 1. Typical Audio Amplifier Application Circuit * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 2 of 4 Rev 1.0 May 18,2004 Fax:886-3-3521052 CO4808 Dual 105mW Headphone Amplifier Electrical Character Vdd=5V,Temp=25℃,Fin=1KHz,RL=32Ω,Vin=1.4V Symbol VDD IDD Ptot VOS Ibias VCM GV IO RO VO PSRR Parameter Supply Voltage Supply Current Total Power Dissipation Input Offset Voltage Input Bias Current Common Mode Voltage Open-Loop Voltage Gain RL=5KΩ Max Output Current Output Resistance Output Swing Power Supply Rejection Ratio Conditions VIN=0V,IO=0A VIN=0V,IO=0A VIN=0V Min 2.0 Typ 1.2 6 10 10 0 4.3 67 70 0.1 3 4.7 89 75 0.05 66 0.05 66 105 5.5 105 70 150 90 3 Max 5.5 3.0 16.5 50 Unit V mA mW mV pA V dB mA Ω V dB dB % dB % dB dB MHz mW THD+N