UNISONIC TECHNOLOGIES CO., LTD PA6021 CMOS IC 2-W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL DESCRIPTION The PA6021 is a stereo audio power amplifier that drives 2 W/channel of continuous RMS power into a 4-Ω load when utilizing a heat sink. Advanced dc volume control minimizes external components and allows BTL (speaker) volume control and SE (headphone) volume control. The 20-pin DIP package allows for the use of a heatsink which provides higher output power. To ensure a smooth transition between active and shutdown modes, a fade mode ramps the volume up and down. DIP-20 Lead-free: PA6021L Halogen-free: PA6021G FEATURES * 2 W Into 4-W speakers with external heatsink * DC volume control with 2-dB * Steps from -40 dB ~ 20 dB * – Fade Mode * – -85-dB Mute Mode * Differential Inputs * 1-µA Shutdown Current (Typical) * Headphone Mode ORDERING INFORMATION Normal PA6021-D20-T Ordering Number Lead Free Plating PA6021L-D20-T www.unisonic.com.tw Copyright © 2008 Unisonic Technologies Co., Ltd Halogen Free PA6021G-D20-T Package Packing DIP-20 Tube 1 of 6 QW-R502-257.A PA6021 CMOS IC PIN CONFIGURATION PGND 1 20 ROUT+ ROUT- 2 19 SE/BTL PVDD 3 18 VOLUME RIN+ 4 17 AGND RIN- 5 16 BYPASS VDD 6 15 FADE LIN- 7 14 SHUTDOWN LIN+ 8 13 NC PVDD 9 12 LOUT+ LOUT- 10 11 PGND PIN DESCRIPTION PIN # PIN NAME I/O 16 BYPASS I 15 FADE I 17 7 8 10 12 13 1,11 3,9 5 4 2 20 AGND LINLIN+ LOUTLOUT+ NC PGND PVDD RINRIN+ ROUT- I I O O ROUT+ I I O O 19 SE/ BTL I 14 SHUTDOW I 6 18 VDD VOLUME I DESCRIPTION Tap to voltage divider for internal midsupply bias generator used for analog reference Places the amplifier in fade mode if a logic low is placed on this terminal; normal operation if logic high is placed on this terminal. Analog power supply ground Left channel negative input for fully differential input. Left channel positive input for fully differential input. Left channel negative audio output Left channel positive audio output. No connection Power ground Supply voltage terminal for power stage Right channel negative input for fully differential input. Right channel positive input for fully differential input. Right channel negative audio output Right channel positive audio output Output control. When this terminal is high, SE outputs are selected. When this terminal is low, BTL outputs are selected. Places the amplifier in shutdown mode if a TTL logic low is placed on this terminal Supply voltage terminal Terminal for dc volume control. DC voltage range is 0 to VDD. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R502-257.A PA6021 CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Voltage, VDD, PVDD VSS -0.3V ~ 6V V Input Voltage, RIN+, RIN-, LIN+,LINVIN -0.3V ~ VDD+0.3V V ℃ Junction Temperature TJ -40°C ~ 150°C ℃ Operating Temperature TOPR -40°C ~ 85°C ℃ Storage Temperature Range TSTG -65°C ~ 85°C 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. ELECTRICAL CHARACTERISTICS (Ta=25°C, unless otherwise specified) PARAMETER SYMBOL DC CHARACTERISTICS (VDD=PVDD=5.5V) Supply Voltage, VDD, PVDD VDD DC Differential Output Voltage High-level Input Voltage Low-level Input Voltage High-level Input Current (SE/ BTL , FADE , SHUTDOWN , VOLUME Low-level Input Current (SE/ BTL , FADE , SHUTDOWN , VOLUME Supply Current, No Load VOUT(DIFF) CONDITIONS MIN 4 VIH SE/ BTL , FADE SHUTDOWN VIL SE/ BTL , FADE SHUTDOWN 0.8 V V V V 0.8xVDD 2 0.6xVDD 1 µA | IIL | VIN=0V 1 µA IDD V(Bypass) Low-Level Output Voltage VOL Output Power POUT THD+N PSRR ZI Supply Ripple Rejection Ratio RR Noise Output Voltage eN Supply Current, Max Power Into a 4-Ω Load IDD SE/ BTL =0V, SHUTDOWN=2V SE/ BTL =5.5V, SHUTDOWN=2V SHUTDOWN =0V Measured at pin 16, No load, VDD=5.5V RL=8Ω, Measured between output and VDD=5.5V RL=8Ω, Measured between output and GND, VDD=5.5V THD=1%, f=1kHz THD=10%, f=1kHz POUT=1W, RL=8Ω, f=20Hz~20kHz VDD=PVDD=4V~5.5V VOLUME=5V f=1kHz, Gain=0dB, C(BYP)=0.47µF f=20Hz~20kHz, Gain=0dB, C(BYP)=0.47µF SHUTDOWN=2V, RL=4Ω, SE/ BTL=0V, POUT=2W UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw mV VIN=VDD=PVDD VOH Input Impedance V | IIH | High-Level Output Voltage Total Harmonic Distortion + Noise Power Supply Rejection Ratio MAX UNIT 5.5 30 50 Gain=0dB, SE/ BTL=0V Gain=20dB, SE/ BTL=0V 6.0 3.0 Supply Current, Shutdown Mode IDD(SD) AC CHARACTERISTICS(VDD=PVDD=5V, RL=4Ω, Gain=20dB) Bypass Voltage (Nominally VDD/2) TYP 2.65 -42 7.5 5 1 9.0 6 20 2.75 2.85 V 700 mV 400 mV mA µA 1.5 2 <0.8% -70 dB W 14 kΩ BTL SE -82 -57 dB dB BTL 36 µVRMS 1.3 ARMS 3 of 6 QW-R502-257.A PA6021 CMOS IC TYPICAL APPLICATION CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 6 QW-R502-257.A PA6021 CMOS IC BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 QW-R502-257.A PA6021 CMOS IC TYPICAL CHARACTERISTICS Output Waveform Output Waveform 4 4 2 2 0 0 -2 -2 VRMS=2.52V -4 VDD=5V, RL=4Ω, THD=1% 4 VDD=5V, RL=4Ω, THD=10% 4 2 2 0 0 -2 VRMS=2.92V -4 -2 VRMS=2.54V VRMS=2.95V -4 -4 0 400 800 1200 1600 2000 0 400 800 1200 1600 2000 Time (µs) Time (µs) Output Waveform 4 2 0 -2 VRMS=2.84V -4 VDD=5V, RL=8Ω, POUT=1W 4 2 0 -2 VRMS=2.87V -4 0 400 800 1200 1600 2000 Time (µs) 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-R502-257.A