UNISONIC TECHNOLOGIES CO., LTD LM4863 CMOS IC DUAL 2.2W AUDIO AMPLIFIER PLUS STEREO HEADPHONE FUNCTION DESCRIPTION The UTC LM4863 is a dual bridge-connected audio power amplifier. It combines dual bridge speaker amplifiers and stereo headphone amplifiers on one chip to simplify audio system design. In addition, the headphone input pin allows the amplifiers to operate in single-ended mode when driving stereo headphones. The IC could deliver different power by packages as below (when connected to a 5V supply with less than 1.0% THD+N.): HTSSOP-20, 4Ω load: 2.2W HTSSOP-20, 3Ω load: 2.5W(with forced-air cooled) SOP/DIP , 8Ω load: 1.1W. The UTC LM4863 features an externally controlled, low-power consumption shutdown mode, a stereo headphone amplifier mode, and thermal shutdown protection. It also utilizes circuitry to reduce “clicks and pops” during device turn-on. *Pb-free plating product number: LM4863L FEATURES * “Click and pop” suppression circuitry * Thermal shutdown protection circuitry * Unity-gain stable * Stereo headphone amplifier mode ORDERING INFORMATION Ordering Number Package Normal Lead Free Plating LM4863-D16-T LM4863L-D16-T DIP-16 LM4863-S18-R LM4863L-S18-R SOP-18 LM4863-S18-T LM4863L-S18-T SOP-18 LM4863-N20-R LM4863L-N20-R HTSSOP-20 LM4863-N20-T LM4863L-N20-T HTSSOP-20 www.unisonic.com.tw Copyright © 2007 Unisonic Technologies Co., Ltd Packing Tube Tape Reel Tube Tape Reel Tube 1 of 11 QW-R107-027.D LM4863 CMOS IC PIN CONFIGURATION SOP-18 DIP-16 SHUTDOWN 1 16 HP-IN 2 15 GND +OUT A 3 14 +OUT B GND SHUTDOWN 1 18 HP-IN GND 2 17 GND +OUT A 3 16 +OUT B VDD 4 15 VDD -OUT A 5 14 -OUT B VDD 4 13 VDD -OUT A 5 12 -OUT B -IN A 6 11 -IN B -IN A 6 13 -IN B GND 7 10 BYPASS GND 7 12 BYPASS +IN A 8 9 +IN B +IN A 8 11 +IN B GND 9 10 GND PIN DESCRIPTION PIN NO. DIP-16 SOP-18 HTSSOP-20 4,13 4,15 PIN NAME I/O VDD - Supply voltage Ground Internal mid-supply bias reference bypassing Entire IC into the shutdown mode when this pin connected to the VDD Output mode select, connected to the VDD for SE mode or GND for BTL mode Non-inverting input of channel A, connected to BYPASS pin inside the IC Inverting input of channel A Channel A + output in BTL mode, high impedance in SE mode Channel A - output in BTL mode, + output in SE mode Non-inverting input of channel B, connected to BYPASS pin inside the IC Inverting input of channel B Channel B + output in BTL mode, high impedance in SE mode Channel B - output in BTL mode, + output in SE mode 4,17 10 12 14 GND BYPASS - 1 1 1 SHUTDOWN I 16 18 20 HP-IN I 8 8 8 +INA I 6 6 6 -INA I 3 3 3 +OUTA O 5 5 5 -OUTA O 9 11 13 +INB I 11 13 15 -INB I 14 16 18 +OUTB O 12 14 16 -OUTB O 2,7,15 2,7,9,10,17 2,7,9,10,11,12,19 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw PIN DESCRIPTION 2 of 11 QW-R107-027.D LM4863 CMOS IC ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Supply Voltage VDD 6.0 V Recommended Supply Voltage Range VDD 2.0 ~ 5.5 V Input Voltage VIN -0.3 ~ VDD+0.3 V Power Dissipation PD Internally limited Junction Temperature TJ +125 ℃ Operating Temperature TOPR -40 ~ +85 ℃ Storage Temperature TSTG -65 ~ +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 SOP-18 DIP-16 HTSSOP-20 SOP-18 DIP-16 HTSSOP-20 Thermal resistance (Junction to Ambient) Thermal resistance (Junction to Case) RATINGS 90 63 90 2 20 2 θJA θJC UNIT ℃/W ℃/W ℃/W ℃/W ℃/W ℃/W ELECTRICAL CHARACTERISTICS (Notes 1)(VDD=5V, Ta =25℃, unless otherwise specified) PARAMETER FOR ENTIRE IC Supply Voltage SYMBOL High Headphone Input Voltage Low Quiescent Power Supply Current (Note 2) Shutdown Current FOR BRIDGED-MODE OPERATION Output Offset Voltage TEST CONDITIONS VDD VIH VIL IDD ISD 2 4 VIN=0V, IOUT=0A, HP-IN=0V VIN=0V, IOUT=0A, HP-IN=4V VDD applied to the SHUTDOWN pin HTSSOP-20 POUT THD+N=10%, f=1kHz RL=3Ω RL=4Ω RL=3Ω RL=4Ω RL=8Ω RL=8Ω THD=1%, f=1kHz THD+N=10%, f=1kHz THD+N=1%, f=1kHz, RL=32Ω 20Hz≤f≤20kHz, Total Harmonic HTSSOP-20 RL=4Ω, POUT=2W THD+N AVD=2 Distortion + Noise SOP/DIP RL=8Ω, POUT=1W VDD=5V, VRIPPLE=200mVRMS, RL=8Ω, Power Supply Rejection Ratio PSRR CB=1.0µF Channel Separation XTALK f=1kHz, CB=1.0µF Signal To Noise Ratio SNR VDD=5V, POUT=1.1W, RL=8Ω SOP/DIP UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 2 VO(OFF) VIN=0V THD=1%, f=1kHz Output Power (measured at the device terminals) MIM TYP MAX UNIT 1.0 5.5 11.5 5.8 0.7 5 2.5 2.2 3.2 2.7 1.1 1.5 0.34 0.3 0.3 0.8 20 V V V mA µA 50 mV W W W % 67 dB 90 98 dB dB 3 of 11 QW-R107-027.D LM4863 CMOS IC ELECTRICAL CHARACTERISTICS(Cont.) PARAMETER FOR SINGLE-ENDED OPERATION Output Offset Voltage SYMBOL TEST CONDITIONS MIM TYP MAX UNIT VO(OFF) VIN=0V 5 50 mV THD=0.5%, f=1kHz, RL=32Ω 75 85 Output Power POUT THD+N=1%, f=1kHz, RL=8Ω mW 340 THD+N=10%, f=1kHz, RL=8Ω 440 AV=-1, POUT=75mW,20Hz≤f≤20kHz, Total Harmonic Distortion + Noise THD+N 0.2 % RL=32Ω Power Supply Rejection Ratio PSRR CB=1.0µF, VRIPPLE=200mVRMS, f=1kHz 52 dB Channel Separation XTALK f=1kHz, CB=1.0µF 60 dB Signal To Noise Ratio SNR VDD=5V, POUT=340mW, RL=8Ω 95 dB Note:1. All voltages are measured with respect to the ground (GND) pins, unless otherwise specified. 2. Depends on the offset voltage when a practical load is connected to the amplifier. 3. When driving 3Ω or 4Ω and operating on a 5V supply, the HTSSOP-20 package must be mounted to the circuit board that has a minimum of 2.5 in2 of exposed, uninterrupted copper area connected to the exposed-DAP. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 11 QW-R107-027.D LM4863 CMOS IC TYPICAL APPLICATION CIRCUIT VDD CI RF 1µF 20KΩ Audio Input + 6 RI 8 20KΩ CB CI (CB size) 0.33µF 1µF RI Audio Input 10 4,13 - IN A +IN A Bypass 11 -IN B 9 +IN B CS 0.1µF TANT 50KΩ AMP 1A + 20KΩ -OUT A 5 20KΩ 20KΩ AMP 2A + +OUT A VDD/2 CONTROL PIN RL 1kΩ RING 8Ω 3 To HP-IN Circuit 50KΩ 20KΩ VDD RF 20KΩ 100kΩ 1 Shutdown To Control Pin on 16 HP-IN Headphone jack 100KΩ AMP 1B + 20KΩ CO 100µF + -OUT B 12 20KΩ 20KΩ 14 AMP 2B + +OUT B CO 100µF + RL 8Ω SLEEVE TIP HEADPHONE JACK 1kΩ GND 2,7,15 Note: Pin out shown for DIP-16. Refer to the PIN CONFIGURATION for the pin out of other packages. Figure 1.Typical Audio Amplifier Application Circuit EXTERNAL COMPONENTS DESCRIPTION Components RI CI RF CS CB Functional Description The inverting input resistance, along with RF, set the closed-loop gain. RI, along with CI form a high pass filter with fc=1/(2πRICI) The input coupling capacitor blocks DC voltage at the amplifier’s input terminals. CI, along with RI, create a high pass filter with fc=1/(2πRICI). Refer to the section. Selecting Proper External Components, for an explanation of determine the value of CI. The feedback resistance, along with RI, set the closed-Ioop gain. The supply bypass capacitor. Refer to the Power Supply Bypassing section for information about properly placing and selecting the value of, this capacitor. The capacitor, CB, filters the half-supply voltage present on the Bypass pin. Refer to the Selecting Proper External Components section for information concerning proper placement and selecting CB’S value. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 11 QW-R107-027.D LM4863 TYPICAL CHARACTERISTICS THD+N (%) THD+N (%) (For HTSSOP-20) 10 THD+N vs Output Power 10 VDD=5V, RL=4Ω POUT=2.0W, BW<80kHz THD+N (%) THD+N (%) VDD=5V, RL=4Ω BW<80kHz 1 20Hz 20KHz 1 0.1 0.1 1KHz 0.01 0 10m THD+N vs Frequency 0.1 Level (W) 1 3 0.01 0 20 100 1k Frequency (Hz) 10k 20k Power Dissipation (W) CMOS IC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 11 QW-R107-027.D LM4863 TYPICAL CHARACTERISTICS(Cont.) THD+N (%) THD+N (%) THD+N (%) THD+N (%) THD+N(%) (For DIP-16 and SOP-18) THD+N (%) CMOS IC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 11 QW-R107-027.D LM4863 TYPICAL CHARACTERISTICS(Cont.) THD+N vs Output Power 10 VDD=3.3V, AVD=-2 POUT=750mW, RL=4Ω f=20kHz THD+N (%) THD+N (%) VDD=-3.3V, AVD= -2 RL=4Ω 1 f=20Hz 0.1 1 0.1 f=1kHz 0.1 Level (W) 1 0.01 20 2 100 1k Frequency (Hz) 10k 20k THD+N (%) 0.01 10m THD+N vs Frequency 10 THD+N (%) CMOS IC Output Power vs Load Resistance 1000 VDD=3.3V, AV= -1 800 f=1kHz, BW<80kHz 800 Power Dissipation vs Supply Voltage VDD=3.3V Single-ended 600 600 4Ω THD+N=10% 400 400 8Ω 200 THD+N=1% 200 0 0 20 30 10 Load Resistance (Ω) 40 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 16Ω 0 0 250 500 750 Power Out (mW) 1000 8 of 11 QW-R107-027.D LM4863 Output Power (W) Output Power (W) Output Power (W) TYPICAL CHARACTERISTICS(Cont.) Output Power (W) CMOS IC Output Power vs Load resistance 1 VDD=5V f=1kHz AV=-1 Single Ended BW<80kHz 0.8 0.6 RL=8Ω 0.6 0.5 0.4 RL=16Ω 0.3 0.4 0.2 10% THD+N 0.2 0 Output Power vs Supply Voltage 0.7 0.1 1% THD+N 0 10 20 30 40 50 60 Load Resistance (Ω) 70 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 0 2 RL=32Ω 2.5 VDD=5V f=1kHz THD+N∞1.0% Bridged Load BW<80kHz 0.5 0.75 1 Output Power (W) 1.25 9 of 11 QW-R107-027.D LM4863 CMOS IC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw Phase (o) PSRR (dB) GAIN (dB) Output Level (dB) Output Level (dB) Power Dissipation (W) Output Noise Voltage (µv) TYPICAL CHARACTERISTICS(Cont.) 10 of 11 QW-R107-027.D LM4863 TYPICAL CHARACTERISTICS(Cont.) Supply Current vs Supply Voltage 15 VIN=0V No Load 12 Dropout Voltage ( V ) Supply Current (mA) CMOS IC BRIDGED (HP-IN=GND) 9 6 3 0 SINGLE-ENDED (HP-IN=VDD) 2 2.5 3 3.5 4 4.5 Supply Voltage (V) 5 5.5 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 11 of 11 QW-R107-027.D