MP7722 MPS, MP7722 Datasheet
MP7722
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MP7722 Summary of contents
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... The Future of Analog IC Technology DESCRIPTION The MP7722 is a stereo 2 x 20W Class D Audio Amplifier one of MPS’ second generation fully integrated audio dramatically reduces solution size by integrating the following: 180mΩ power MOSFETs Startup / Shutdown pop elimination Short circuit protection ...
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... MP7722 – 20W CLASS D STEREO SINGLE ENDED AUDIO AMPLIFIER PACKAGE REFERENCE TOP VIEW NC 1 REF1 2 IN1 3 AGND1 EN1 6 IN2 7 REF2 8 AGND2 9 EN2 10 EXPOSED PAD (CONNECT TO PGND) Part Number* Package MP7722DF TSSOP20F * For Tape & Reel, add suffix –Z (eg. MP7722DF–Z) For Lead Free, add suffix – ...
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... Amplifier 2 Reference. REF2 is the reference point for amplifier 2. Use a resistive voltage 8 REF2 divider to set the voltage at REF1 AGND2 Analog Ground 2. Connect AGND2 to AGND1. Enable Input 2. EN2 must be connected to EN1. Drive high to enable MP7722, drive low to 10 EN2 disable. High-Side MOSFET Bootstrap Input for Amplifier 2. A capacitor from BS2 to SW2 supplies 12 BS2 the gate drive current to the internal high-side MOSFET. Connect a 1µ ...
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... MP7722 – 20W CLASS D STEREO SINGLE ENDED AUDIO AMPLIFIER PIN FUNCTIONS (continued) Pin # Name Description High-Side MOSFET Bootstrap Input for Amplifier 1. A capacitor from BS1 to SW1 supplies 17 BS1 the gate drive current to the internal high-side MOSFET. Connect a 1µF capacitor from SW1 to BS1. See Figure 1. Power Supply Input. Bypass VDD1 to PGND1 with a 1µ ...
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... MP7722 – 20W CLASS D STEREO SINGLE ENDED AUDIO AMPLIFIER TYPICAL PERFORMANCE CHARACTERISTICS 0 -30 -60 -90 -120 -150 20 100 1K FREQUENCY (Hz) +0 -20 -40 -60 -80 -100 20 100 1K FREQUENCY (Hz) Efficiency vs P OUT 100 OUTPUT POWER (W) MP7722 Rev. 1.3 9/25/2006 MPS Proprietary Information ...
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... MP7722 – 20W CLASS D STEREO SINGLE ENDED AUDIO AMPLIFIER OPERATION The MP7722 uses Monolithic Power Systems’ patented Analog Adaptive Modulation convert the audio input signal into pulses of power that, when filtered through an external inductor-capacitor filter, reproduce the amplified signal across the load. Because of the ...
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... MP7722 – 20W CLASS D STEREO SINGLE ENDED AUDIO AMPLIFIER APPLICATION INFORMATION COMPONENT SELECTION The MP7722 uses a minimum number of external components to complete a stereo Class D audio amplifier. The circuit of Figure 1 is optimized for a 24V power supply and a 1.5V RMS maximum input signal. This circuit should be suitable for most applications ...
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... MP7722 – 20W CLASS D STEREO SINGLE ENDED AUDIO AMPLIFIER The quality factor (Q) of the LC filter is important. If this is too low output noise will increase, and if this is too high then peaking may occur at high signal frequencies reducing flatness. The circuit Q is set by the load resistance (speaker resistance, typically 4Ω ...
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... MP7722 – 20W CLASS D STEREO SINGLE ENDED AUDIO AMPLIFIER PCB Layout The circuit layout is critical for optimum performance and low output distortion and noise. Place the following components as close to the MP7722 as possible: Power Supply Bypass, C BYP C and C carry the transient current for ...
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... MP7722 – 20W CLASS D STEREO SINGLE ENDED AUDIO AMPLIFIER TYPICAL APPLICATION CIRCUIT RH1 RL1 C INT1 C R IN1 IN1 CH1 INPUT RH2 RL2 C INT2 C R IN2 IN2 CH2 INPUT EN Figure 1—2 x 20W Stereo Typical Application Circuit MP7722 Rev. 1.3 9/25/2006 MPS Proprietary Information ...
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... MP7722 – 20W CLASS D STEREO SINGLE ENDED AUDIO AMPLIFIER PACKAGE INFORMATION 6.40 6.60 20 PIN TOP VIEW 0.80 1.05 0.19 0.65 BSC 0.30 FRONT VIEW 3.80 4.30 BOTTOM VIEW NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications ...