UNISONIC TECHNOLOGIES CO., LTD PA2308 LINEAR INTEGRATED CIRCUIT CLASS AB STEREO HEADPHONE DRIVER DESCRIPTION As operating on a single 5V supply, the UTC PA2308 is capable of delivering 280mW of max. Output power to an 8Ωload or 110mW to a 32Ωload with less than 10% (THD+N). The device is very sutible for portable digital audio application. FEATURES * Output power less than 10% THD+N, VDD=5V(TYP) --280mW/CH (typical) into a 8Ω load --110mW/CH (typical) into a 32Ω load *Very High signal-to-noise ratio *Large output voltage swing *Good power supply ripple rejection *Low power consumption and Low distortion *Fix wide temperature range *Without switch ON/OFF clicks SOP-8 Lead-free: PA2308L Halogen-free: PA2308G ORDERING INFORMATION Normal PA2308-S08-R PA2308-S08-T Ordering Number Lead Free Plating PA2308L-S08-R PA2308L-S08-T Halogen Free PA2308G-S08-R PA2308G-S08-T www.unisonic.com.tw Copyright © 2008 Unisonic Technologies Co., Ltd Package Packing SOP-8 SOP-8 Tape Reel Tube 1 of 6 QW-R107-057.A PA2308 LINEAR INTEGRATED CIRCUIT PIN CONFIGURATION PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 7 8 PIN NAME VOUT A Inverting Input A Non- Inverting Input A VSS Non- Inverting Input B Inverting Input B VOUT B VDD I/O O I I I I O I PIN DESCRIPTION Channel A output pin Inverting input for channel A Non-inverting input for channel A Ground Non-inverting input for channel B Inverting input for channel B Channel B output pin Supply voltage input pin UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R107-057.A PA2308 BLOCK DIAGRAM 1 8 VDD Inverting Inut A 2 7 VOUT B Non-inverting Input A 3 VSS 4 - + VOUT A UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 Inverting Input B + - LINEAR INTEGRATED CIRCUIT 5 Non-inverting Input B 3 of 6 QW-R107-057.A PA2308 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (Ta=25℃) PARAMETER SYMBOL RATINGS UNIT Supply Voltage VDD 7 V ℃ Junction Temperature TJ 150 ℃ Operating Temperature TOPR -40 to 85 ℃ Storage Temperature TSTG -65 to +150 Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. THERMAL DATA PARAMETER SYMBOL θJA Junction to Ambient MIN TYP 210 MAX UNIT K/W ELECTRICAL CHARACTERISTICS(Ta=25°C; unless otherwise specified) VDD=5V, VSS=0V, f=1kHz, RL=32Ω PARAMETER SUPPLY Supply Voltage Negative Supply Voltage Supply Current Total Power Dissipation DC CHARACTERISTICS Input Offset Voltage Input Bias Current Common Mode Voltage Closed Loop Voltage Gain Max. Output Current Output Resistance AC CHARACTERISTICS Output Voltage Swing SYMBOL Single Dual CONDITIONS VDD VSS IDD PD VIN(OFF) IBIAS VCM Gv IOUT Ro VOUT MIN TYP MAX UNIT 3.0 ±1.5 -1.5 5.0 ±2.5 -2.5 2.5 12.5 6.0 ±3.0 -3.0 5 25 No Load No Load 5 10 0 RL=5kΩ (THD+N)/S<0.1% RL=32Ω(Note 1) RL=16Ω(Note 1) fIN=100Hz, VRIPPLE(P.P)=100mV RL=32Ω 0.25 0.5 Power Supply Rejection Ratio PSRR Channel Separation αCS Load Capacitance CL Total Harmonic Distortion Plus Noise to (THD+N)/S RL=32Ω(Note 2) Signal Ratio Signal to Noise Ratio S/N Unity Gain Frequency FG RL=5kΩ Max.Output Power POUT (THD+N)/S<0.1% Input Capacitance CI Power Bandwidth B Unity Gain Inverting Note: 1. Values are proportional to VDD;(THD+N)/S<0.1% 2. VDD=5V; VOUT(P-P)=3.5V(at 0dB) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3.5 75 140 0.25 4.75 4.5 65 95 90 -65 0.05 100 5 84 3 20 200 -60 0.1 V V mA mW mV pA V dB mA Ω V dB dB pF dB % dB MHz mW PF kHz 4 of 6 QW-R107-057.A PA2308 TYPICAL APPLICATION 220pF 2.2μF VIN A 15kΩ 220μF VOUT A VDD 15kΩ RL 8 1 2 + LINEAR INTEGRATED CIRCUIT VREF 1/2VDD(typ.) 100μF 3 + - 6 5 15kΩ VIN B 2.2μF 15kΩ 4 VOUT B 220μF RL 220pF UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 5 of 6 QW-R107-057.A PA2308 LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 6 QW-R107-057.A