CO4808 Dual 105mW Headphone Amplifier Description 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 Applications n Headphone Amplifier n Personal Computers n Portable electronic devices 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. 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: [email protected] 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: [email protected] 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 Parameter Conditions Min Typ Unit 5.5 V VDD Supply Voltage IDD Supply Current VIN=0V,IO=0A 1.2 3.0 mA Ptot Total Power Dissipation VIN=0V,IO=0A 6 16.5 mW VOS Input Offset Voltage VIN=0V 10 50 mV Ibias Input Bias Current VCM Common Mode Voltage GV Open-Loop Voltage Gain RL=5KΩ 67 dB IO Max Output Current 70 RO Output Resistance mA Ω VO Output Swing PSRR Power Supply Rejection Ratio Crosstalk Channel Separation 2.0 Max 10 pA 0 V 4.3 THD+N<0.1% 0.1 RL=32Ω,0.1% THD+N, Min 3 RL=32Ω,0.1% THD+N, Max 4.7 Cb=1.0μF, Vripple=100mVpp, f=100Hz 89 dB RL=32Ω 75 dB RL=16Ω Vo=3.5Vpp (at 0dB) RL=32Ω Vo=3.5Vpp (at 0dB) 0.05 66 0.05 66 % dB % dB V f=1kHz THD+N Total Harmonic Distortion + Noise SNR Signal-to-Noise Ratio Vo=3.5Vpp (at 0dB) 105 dB fG Unity Gain Frequency Open Loop, RL=5kΩ 5.5 MHz THD+N=0.1%,f=1kHz RL=16Ω 105 mW RL=32Ω 70 THD+N=10%,f=1kHz RL=16Ω 150 mW RL=32Ω 90 mW 3 pF PO Output Power CI Input Capacitance CL Load Capacitance SR Slew Rate 60 200 Unity Gain Inverting 3 mW pF V/μs * 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: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 3 of 4 Rev 1.0 May 18,2004 Fax:886-3-3521052 CO4808 Dual 105mW Headphone Amplifier Small Outline SOP-8 SYMBOL A B C D E F H J K M L e1 α INCHES MIN MAX 0.188 0.197 0.149 0.158 0.228 0.244 0.050 BSC 0.013 0.020 0.004 0.010 0.053 0.069 0.011 0.019 0.007 0.010 0.016 0.050 0.150 REF 450 0 80 0 MILLIMETERS MIN MAX 4.80 5.00 3.80 4.00 5.80 6.20 1.27 BSC 0.33 0.51 0.10 0.25 1.35 1.75 0.28 0.48 0.19 0.25 0.40 1.27 3.81 REF 450 0 0 80 NOTES - * 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: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 4 of 4 Rev 1.0 May 18,2004 Fax:886-3-3521052