BL4863 Dual 2.2W Audio Amplifier Plus Stereo Headphone Function Features Stereo headphone amplifier mode Unity-gain stable Power output at 5.0V, 1% THD+N, 3Ω 2.50 W (typ.) Power output at 5.0V, 1% THD+N, 4Ω 2.20 W (typ.) Power output at 5.0V, 1% THD+N, 8Ω 1.25 W (typ.) Single-ended mode TND+N at 75mW into 32 Ω load 0.5% (max) Ultra-low shutdown current 0.1 uA (typ.) 2.0V – 5.5V power operation range Improved circuitry eliminates pop-click noise during turn-on and turn-off transitions Thermal shutdown protection circuitry External gain configuration capability Exposed-DAP TSSOP20 package , DIP16 package SOP16 package General Description The BL4863 is a dual BTL connected Class-AB audio power amplifier designed for multimedia monitors and other portable applications. It is capable of delivering 2.5 watts of continuous average power to a 3Ω BTL load or 2.2 watts to a 4Ω BTL load with less than 1% distortion (THD+N) from a 5VDC power supply. In addition, the HP-IN input pin allows the BL4863 to operate in single-ended mode and drive stereo headphones. The BL4863 was designed specifically to provide high quality output power with a minimal amount of external components. With dual bridge speaker amplifiers and stereo headphone amplifiers on one chip, it simplifies audio system design. The BL4863 features an externally controlled shutdown mode, a stereo headphone driver mode, and thermal shutdown protection. With special pop-click eliminating circuit, the BL4863 provides perfect pop-click characteristic during turn-on and turn-off transitions. The BL4863 is unity-gain stable and can be configured by external gain-setting resistors. Applications Multimedia monitors Portable and desktop computers Portable televisions http://www.belling.com.cn -1- Total 11 Pages BL4863 Pin Diagrams SHUTDOWN GND +OUTA VDD -OUTA -INA GND +INA GND GND 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 HP-IN GND +OUTB VDD -OUTB -INB BYPASS +INB GND GND Exposed-DAP TSSOP20 DIP16/SOP16 Pin Description No. Pin Name I/O Description 1 SHD I Shout-down Logical Control, ‘1’ is active. 2,7,10,11,19 GND I/O Ground 3 +OUTA O Positive Output (Channel A) 4,17 VDD1 I/O Power 5 -OUTA O Negative Output (Channel A) 6 -INA I Negative Signal Input (Channel A) 8 +INA I Positive Signal Input (Channel A) 9,12 NC / Not Connected 13 +INB I Positive Signal Input (Channel B) 14 BP I/O Internal DC reference, Connected with Bypass Capacitor. 15 -INB I Negative Signal Input (Channel B) 16 -OUTB O Negative Output (Channel B) 18 +OUTB O Positive Output (Channel B) 20 HP-IN I HP-IN Function Control, ‘1’ is active. Order Information Part Number Package Shipping BL4863TS TSSOP20 4000 pcs / Tape & Reel BL4863PD DIP16 Tube BL4863SO SOP16 Tube http://www.belling.com.cn -2- Total 11 Pages BL4863 Typical Application Circuit VDD Rf=20KΩ Cs=1uF PIN 4 17 -INA CO=100uF Ri=20KΩ -OUTA Amp 1A 50KΩ RL=8Ω 20KΩ 20KΩ Amp 2A +INA 1KΩ Ci=1uF 20KΩ Audio input HEADPHONE JACK +OUTA To HP_IN Circuit CB=0.33uF BP +INB Ci=1uF RL=8Ω 20KΩ -OUTB Amp 1B -INB CO=100uF 1KΩ Ri=20KΩ VDD 100KΩ +OUTB 20KΩ Audio input 20KΩ 50KΩ Amp 2B SHD HP_IN HP-DET To Control Pin on 100KΩ Headphone Jack PIN 2 7 10 11 19 GND Rf=20KΩ ** SHD and HP-IN Operation Logic Level truth table SHD HP-IN OPERATION MODE Low Low Bridged amplifiers Low High Single-Ended amplifiers High Low Shutdown High High Shutdown http://www.belling.com.cn -3- Total 11 Pages BL4863 Absolute Maximum Ratings Operating Ratings Supply Voltage -0.3V to 6V Input Voltage -0.3V to VDD+0.3V ESD Susceptibility (Human body model) 2000V Junction Temperature -40℃ to +150℃ Storage Temperature -65℃ to +150℃ Thermal Resistance θJC(TSSOP20) 41℃/W Temperature Range Supply Voltage -40℃≦TA≦85℃ 2.0V≦VDD≦5.5V NOTE: Absolute Maximum Ratings indicate limits beond which damage to the device may occur. Operating Rating indicate conditions for which the device is functional, but do not guarantee specific performance limits. Electrical Characteristics for Entire IC (VDD = 5V, TA = 25℃) Symbol VDD IDD ISD Parameter Conditions Spec Min. Typ. 2.0 Power Supply Voltage Max. Units 5.5 V Quiescent Power Supply VIN = 0V, HP-IN = 0V, No Load 4.0 15 mA Current VIN = 0V, HP-IN = 5V, No Load 3.0 6 mA Shutdown Current VSHD = VDD 0.1 2 uA VHPIH Headphone Voltage Input High VHPIL Headphone Voltage Input Low 4.0 V 0.8 V Electrical Characteristics for Bridge-Mode Operation (VDD = 5V, TA = 25℃) Symbol VOS Parameter Output Offset Voltage Conditions VIN = 0V THD+N<=1%, PO Output Power THD+N<=10%, f=1KHz THD+N PSRR Min. Typ. Max. -50 5 50 3Ω Load 2.5 4Ω Load 2.2 8Ω Load f=1KHz Spec 1.0 Units mV 1.25 32Ω Load 0.34 3Ω Load 3.2 4Ω Load 2.7 8Ω Load 1.5 W Total Harmonic 20Hz≤f≤20kHz, PO = 2W, RL = 4Ω 0.3 Distortion + Noise AVD = 2 PO = 1W, RL = 8Ω 0.3 VDDRIPPLE=0.2VRMS , f=1KHz, CB=1μ F 73 dB Power Supply Rejection Ratio % XTALK Channel Separation f=1KHz, CB=1μ F 90 dB SNR Signal to Noise Ratio PO = 1.1W, RL = 8Ω 98 dB http://www.belling.com.cn -4- Total 11 Pages BL4863 Electrical Characteristics for Single-Ended Operation (VDD = 5V, TA = 25℃) Symbol VOS PO THD+N PSRR Parameter Output Offset Voltage Output Power Conditions Min. Typ. Max. VIN = 0V -50 5 50 THD+N<=0.5%, f=1KHz, 32Ω Load 75 92 THD+N<=1%, f=1KHz, 8Ω Load 350 THD+N<=10%, f=1KHz, 8ΩLoad 450 Total Harmonic 20Hz≤f≤20kHz, AVD = -1, Distortion + Noise PO = 75mW, RL =32Ω Power Supply Rejection Ratio Spec Units mV mW 0.1 % VDDRIPPLE=0.2VRMS , f=1KHz, CB=1μ F 70 dB XTALK Channel Separation f=1KHz, CB=1μ F 80 dB SNR Signal to Noise Ratio PO =340mW, RL = 8Ω 97 dB http://www.belling.com.cn -5- Total 11 Pages BL4863 Typical Performance Characteristics 10 BL4863 THD+N vs Outpt (VDD=5V, RL=8O, BTL Power Mode) 10 BL4863 THD+N vs (VDD=5V, RL=8O, Po=1W, BTL Frequency Mode) 20 KHz 1 KHz 20 Hz 1 1 TH D+ N (% ) T H D+ N (% ) 0.1 0.1 0.01 10m 10 0.01 0.1 OUTPUT POWER (W) 1 2 BL4863 THD+N vs Outpt (VDD=5V, RL=4O, BTL Power Mode) 10 100 1k FREQUENCY (Hz) 10k 20k 10k 20k 10k 20k BL4863 THD+N vs (VDD=5V, RL=4O, Po=2W, BTL Frequency Mode) 20 KHz 1 KHz 20 Hz 1 1 TH D+ N (% ) TH D+ N (% ) 0.1 0.01 10m 10 0.1 0.1 OUTPUT POWER (W) 1 0.01 3 BL4863 THD+N vs Outpt (VDD=5V, RL=3O, BTL Power Mode) 10 100 1k FREQUENCY (Hz) BL4863 THD+N vs (VDD=5V, RL=3O, Po=2.2W, BTL Frequency Mode) 20 KHz 1 KHz 20 Hz 1 1 TH D+ N (% ) TH D+ N (% ) 0.1 0.01 10m 0.1 0.1 OUTPUT POWER (W) http://www.belling.com.cn 1 0.01 5 -6- 100 1k FREQUENCY (Hz) Total 11 Pages BL4863 10 BL4863 THD+N vs Outpt (VDD=5V, RL=32O, SE Power Mode) 10 BL4863 THD+N vs (VDD=5V, RL=32O, Po=75mW, SE Frequency Mode) 20 KHz 1 KHz 20 Hz 1 1 TH D+ N (% ) TH D+ N (% ) 0.1 0.1 0.01 10m 0.1 0.01 0.2 100 OUTPUT POWER (W) 10 BL4863 THD+N vs Outpt (VDD=3.3V, RL=8O, BTL Power Mode) 10 1k FREQUENCY (Hz) 10k 20k BL4863 THD+N vs (VDD=3.3V, RL=8O, Po=450mW, BTL Frequency Mode) 20 KHz 1 KHz 20 Hz 1 1 TH D+ N (% ) TH D+ N (% ) 0.1 0.01 10m 10 0.1 0.1 OUTPUT POWER (W) 0.01 1 BL4863 THD+N vs Outpt (VDD=3.3V, RL=4O, BTL Power Mode) 10 100 1k FREQUENCY (Hz) 10k 20k BL4863 THD+N vs (VDD=3.3V, RL=4O, Po=750mW, BTL Frequency Mode) 20 KHz 1 KHz 20 Hz 1 1 TH D+ N (% ) TH D+ N (% ) 0.1 0.01 10m 0.1 0.1 OUTPUT POWER (W) http://www.belling.com.cn 1 0.01 2 -7- 100 1k FREQUENCY (Hz) 10k 20k Total 11 Pages BL4863 0 BL4863 Channel (VDD=5V, RL=8O, Po=1W, CB=1uF, BTL Separation Mode) Channel B to Channel BL4863 Channel (VDD=5V,Separation RL=3O, Po=75mW, CB=1uF, SE 0Mode) Channel A to Channel A Channel A to Channel B B Channel B to Channel A -20 -20 -40 -40 Ou tp ut Le -60 vel (d B) Ou tp ut Le -60 vel (d B) -80 -80 -100 -100 -120 20 100 1k FREQUENCY (Hz) 10k -120 20 20k Power Supply Rejection Ratio (VDD=5V, RL=8Ω, Vripple=200mVp-p, CB=1uF) -10 1m SE Mode BTL Mode 100 1k FREQUENCY (Hz) 10k 20k BL4863 Noise (VDD=5V, RL=8O, Floor A-Weighted Filte, BTL Mode) Vo1+Vo 2 Vo1 -20 PSRR (dB) -30 100µ Ou tp ut No ise Vo lta ge (µ V) 10µ -40 -50 -60 -70 -80 20 8 100 1k FREQUENCY (Hz) 10k 1µ 20 20k 100 1k FREQUENCY (Hz) 10k 20k BL4863 Supply Current vs Supply Voltage 7 6 5 SU PP LY4 C U R 3 RE NT (m2 A) 1 0 2 2.5 3 3.5 4 SUPPLY VOLTAGE (V) http://www.belling.com.cn 4.5 5 5.5 -8- Total 11 Pages BL4863 Package Information 20 – 引脚模式的 TSSOP 封装 http://www.belling.com.cn -9- Total 11 Pages BL4863 http://www.belling.com.cn - 10 - Total 11 Pages BL4863 16 - 引脚模式的 SOP 封装 http://www.belling.com.cn - 11 - Total 11 Pages