PAM8603ANHR

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PAM8603A Document number: DSxxxxx Rev. 1 - 2 1 of 16 www.diodes.com November 2012 © Diodes Incorporated PAM8603A A Product Line of Diodes Incorporated ANTI-SATURATION FILTERLESS 3W CLASS-D STEREO AMPLIFIER WITH DC VOLUME CONTROL AND HEADPHONE OUTPUT Description The PAM8603A is a 3W, Class-D audio amplifier with headphone amplifier. Advanced 64-Step DC volume control minimizes external components and allows speaker volume control and headphone volume control. PAM unique antisaturation technology which detects output signal clip due to the over level input signal suppress the output signal clip automatically. Also the antisaturation function can adapt the output clip caused by power supply voltage down with battery. It offers low THD+N, to produce highquality sound reproduction. The new filterless architecture allows the device to drive the speaker directly, without low-pass output filters which will save system cost and PCB area. With the same numbers of external components, the efficiency of the PAM8603A is much better than Class-AB cousins. It can extend the battery life thus be ideal for portable applications. The PAM8603A is available in a SSOP-24 package. Features • 3W Output at 10% THD with a 4Ω Load and 5V Power Supply • Filterless, Low Quiescent Current and Low EMI • Low THD+N • 64-Step DC Volume Control • Headphone Output Function • Unique Anti-Saturation Function • Superior Low Noise • Low Pop Noise • Efficiency Up to 90% • Short Circuit Protection • Thermal Shutdown • Few External Components to Save the Space and Cost • Pb-Free Package Pin Assignments Applications • LCD Monitors / TV Projectors • Notebook Computers • Portable Speakers • Portable DVD Players, Game Machines • VoIP/Speakers Phones

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PAM8603A Document number: DSxxxxx Rev. 1 - 2 2 of 16 www.diodes.com November 2012 © Diodes Incorporated PAM8603A A Product Line of Diodes Incorporated Typical Applications Circuit Pin Descriptions Pin Number Pin Name Function 1 +OUT_L Left Channel Positive Output 2 PGNDL Left Channel Power GND 3 PGNDL Left Channel Positive GND 4 -OUT_L Left Channel Negative Output 5 PVDDL Left Channel Power Supply 6 MUTE Mute Control Input (active low) 7 VDD Analog VDD 8 IN L Left Channel Input 9 EAR IN L Left Earphone Input 10 VDC Analog Reference for gain Control Section 11 VOLUME DC Voltage Control to Set the Gain of Class-D 12 EAR OUT L Left Earphone Output 13 EAR OUT R Right Earphone Output 14 VREF Internal Analog Reference, Connect a Bypass Capacitor from VREF to GND 15 LINE/EAR Line/ Ear Detect 16 EAR IN R Right Earphone Input 17 INR Right Channel Input 18 GND Analog GND 19 SHDN Shutdown Control Input (active low) 20 PVDDR Right Channel Power Supply 21 -OUT_R Right Channel Negaitive Output 22 PGNDR Right Channel Power GND 23 PGNDR Right Channel Power GND 24 +OUT_R Right Channel Positive Output

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PAM8603A Document number: DSxxxxx Rev. 1 - 2 3 of 16 www.diodes.com November 2012 © Diodes Incorporated PAM8603A A Product Line of Diodes Incorporated Functional Block Diagram Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.) These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground. Parameter Rating Unit Supply Voltage 6.0 V Input Voltage -0.3 to VDD +0.3 Maximum Junction Temperature 150 °C Storage Temperature -65 to +150 Soldering Temperature 300, 5 sec Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.) Parameter Rating Unit Supply Voltage Range 2.5 to 5.5 V Ambient Temperature Range -20 to +85 °C Junction Temperature Range -20 to +125 °C Thermal Information Parameter Package Symbol Max Unit Thermal Resistance (Junction to Ambient) SSOP-24 θJA 96 °C/W

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PAM8603A Document number: DSxxxxx Rev. 1 - 2 4 of 16 www.diodes.com November 2012 © Diodes Incorporated PAM8603A A Product Line of Diodes Incorporated Electrical Characteristics (@TA = +25°C, VDD = 5V, Gain = Maximum, RL = 8Ω, unless otherwise specified.) Parameter Symbol Test Conditions Min Typ Max Units Class D Stage Supply Voltage Range VDD 2.5 5.5 V Quiescent Current IQ No Load 10 15 mA Output Offset Voltage VOS No Load 10 50 mV Drain-Source On-State Resistance RDS(ON) IDS = 0.5A P MOSFET 0.35 Ω N MOSFET 0.25 Output Power PO THD+N = 10%, f = 1kHz, Anti-saturation off RL = 8Ω 1.55 1.70 W RL = 4Ω 2.85 3.00 THD+N = 1%, f = 1kHz, Anti-saturation off RL = 8Ω 1.10 1.35 RL = 4Ω 2.3 2.5 f = 1kHz, Anti-saturation on RL = 8Ω 1.0 RL = 4Ω 2.0 Total Harmonic Distortion Plus Noise THD+N RL = 8Ω, PO = 0.85W, f = 1KHz 0.08 % RL = 4Ω, PO = 1.75W, f = 1KHz 0.08 Power Supply Ripple Rejection PSRR Input AC-GND, f = 1KHz, VPP = 200mV, Gain =2V/V -70 dB Channel Separation CS PO = 1W, f = 1KHz -95 dB Oscillator Frequency fOSC 200 250 300 kHz Efficiency η PO = 1.7W, f =1 kHz, RL = 8Ω 85 89 % PO = 3.0W, f =1 kHz, RL = 4Ω 80 83 % Noise VN Input AC-GND A-Weighting 220 µV No A-Weighting 350 Signal Noise Ratio SNR f = 20 – 20kHz, THD = 1% 85 dB Earphone Stage Quiescent Current IQ No Load 4.5 7.5 mA Output Offset Voltage VOS No Load 2.5 V Output Power PO THD+N = 1%, RL = 32Ω, f = 1KHz 60 mW Total Harmonic Distortion Plus Noise THD+N RL = 32Ω, PO = 10mW, f = 1kHz 0.02 % Power Supply Ripple Rejection PSRR Input AC-GND, f = 1kHz, VPP = 200mV -75 dB Channel Separation CS PO = 1W, f = 1kHz -85 dB Noise VN Input AC-GND A-Weighting 40 µV No A-Weighting 70 Signal Noise Ratio SNR f = 20 – 20kHz, VO = 1VRMS 85 dB Control Section Under Voltage Lock-Out UVLO 2 Mute Current IMUTE VMUTE = 0V 1 3 mA Shutdown Current ISHDN VSHDN = 0V 1 µA Ear/ Line Threshold Voltage VTH 0.65 SHDN Input High VSH 1.2 SHDN Input High VSL 0.5 MUTE Input High VMH 1.2 MUTE Input High VML 0.5 Over Temperature Protection OTP 140 °C Over Temperature Hysteresis OTH 30 °C

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PAM8603A Document number: DSxxxxx Rev. 1 - 2 5 of 16 www.diodes.com November 2012 © Diodes Incorporated PAM8603A A Product Line of Diodes Incorporated Typical Performance Characteristics (@TA = +25°C, VDD = 5V, RL = 8Ω, GV = 24dB, unless otherwise specified.) Class-D Output

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PAM8603A Document number: DSxxxxx Rev. 1 - 2 6 of 16 www.diodes.com November 2012 © Diodes Incorporated PAM8603A A Product Line of Diodes Incorporated Typical Performance Characteristics (cont.) (@TA = +25°C, VDD = 5V, RL = 8Ω, GV = 24dB, unless otherwise specified.) Class-D Output

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PAM8603A Document number: DSxxxxx Rev. 1 - 2 7 of 16 www.diodes.com November 2012 © Diodes Incorporated PAM8603A A Product Line of Diodes Incorporated Typical Performance Characteristics (cont.) (@TA = +25°C, unless otherwise specified.) Earphone Output

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PAM8603A Document number: DSxxxxx Rev. 1 - 2 8 of 16 www.diodes.com November 2012 © Diodes Incorporated PAM8603A A Product Line of Diodes Incorporated Typical Performance Characteristics (cont.) (@TA = +25°C, unless otherwise specified.)

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PAM8603A Document number: DSxxxxx Rev. 1 - 2 9 of 16 www.diodes.com November 2012 © Diodes Incorporated PAM8603A A Product Line of Diodes Incorporated Typical Performance Characteristics (cont.) (@TA = +25°C, VDD = 5V, GV = 10dB, unless otherwise specified.)