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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 16 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 16 0.1% (typ) n THD+N at 1kHz at 70mW continuous average output power into 32 0.1% (typ) n Output power at 0.1% THD+N at 1kHz into 32 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=25J ,Fin=1KHz,RL=32[ ,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=5K[ 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 [ V dB dB % dB % dB dB MHz mW
THD+N<0.1% RL=32[ ,0.1% THD+N, Min RL=32[ ,0.1% THD+N, Max Cb=1.0g F, Vripple=100mVpp, f=100Hz RL=32[ f=1kHz RL=16[ Vo=3.5Vpp (at 0dB) RL=32[ Vo=3.5Vpp (at 0dB) Vo=3.5Vpp (at 0dB) Open Loop, RL=5k[ THD+N=0.1%,f=1kHz RL=16[
Crosstalk Channel Separation
THD+N
Total Harmonic Distortion + Noise
SNR fG
Signal-to-Noise Ratio Unity Gain Frequency
PO
Output Power
RL=32[ THD+N=10%,f=1kHz RL=16[ RL=32[
60
mW mW mW pF
CI CL SR
Input Capacitance Load Capacitance Slew Rate Unity Gain Inverting
200 3
pF V/g s
* 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 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
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: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 4 of 4 Rev 1.0 May 18,2004 Fax:886-3-3521052

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