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MP7722 Datasheet(PDF) 3 Page - Monolithic Power Systems |
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MP7722 Datasheet(HTML) 3 Page - Monolithic Power Systems |
3 / 11 page MP7722 – 2 x 20W CLASS D STEREO SINGLE ENDED AUDIO AMPLIFIER MP7722 Rev. 1.3 www.MonolithicPower.com 3 9/25/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2006 MPS. All Rights Reserved. OPERATING SPECIFICATIONS Circuit of Figure 1, VDD = 24V, VEN = 5V, TA = +25°C, unless otherwise noted. Parameters Symbol Condition Min Typ Max Units f = 1KHz, THD+N = 10%, 4Ω Load 20 W Power Output f = 1KHz, THD+N = 10%, 8Ω Load 10 W POUT = 1W, f = 1KHz, 4Ω Load 0.16 % THD+ Noise POUT = 1W, f = 1KHz, 8Ω Load 0.06 % f = 1KHz, POUT = 1W, 4Ω Load 90 % Efficiency f = 1KHz, POUT = 1W, 8Ω Load 95 % Maximum Power Bandwidth 20 KHz Dynamic Range 93 dB Noise Floor A-Weighted 190 µV Power Supply Rejection f = 1KHz 60 dB PIN FUNCTIONS Pin # Name Description 1, 5, 11, 16 NC No Connect. Not internally connected 2 REF1 Amplifier 1 Reference. REF1 is the reference point for amplifier 1. Use a resistive voltage divider to set the voltage at REF1 to VDD/2. 3 IN1 Amplifier 1 Input. IN1 is the inverting input for amplifier 1. 4 AGND1 Analog Ground 1. Connect AGND1 to AGND2. 6 EN1 Enable Input 1. EN1 must be connected to EN2. Drive EN1 high to enable MP7722; low to disable it. 7 IN2 Amplifier 2 Input. IN2 is the inverting input for amplifier 2. 8 REF2 Amplifier 2 Reference. REF2 is the reference point for amplifier 2. Use a resistive voltage divider to set the voltage at REF1 to VDD/2. 9 AGND2 Analog Ground 2. Connect AGND2 to AGND1. 10 EN2 Enable Input 2. EN2 must be connected to EN1. Drive high to enable MP7722, drive low to disable. 12 BS2 High-Side MOSFET Bootstrap Input for Amplifier 2. A capacitor from BS2 to SW2 supplies the gate drive current to the internal high-side MOSFET. Connect a 1µF capacitor from SW2 to BS2. 13 VDD2 Power Supply Input. Bypass VDD2 to PGND2 with a 1µF X7R capacitor (in addition to the main bulk capacitor), placed close to the IC PIN13 and PIN15. 14 SW2 Switched Power Output. SW2 is the output of Amplifier 2. Connect the LC filter to this pin. 15 PGND2 Power Ground for Amplifier 2. Connect PGND2 to PGND1. |
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