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MAX9751EUI Datasheet(PDF) 10 Page - Maxim Integrated Products |
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MAX9751EUI Datasheet(HTML) 10 Page - Maxim Integrated Products |
10 / 30 page 2.6W Stereo Audio Power Amplifiers and DirectDrive Headphone Amplifiers 10 ______________________________________________________________________________________ Pin Description PIN MAX9750 MAX9751 MAX9755 THIN QFN TSSOP THIN QFN TSSOP THIN QFN TSSOP NAME FUNCTION 1 5 — — 2 6 INL Left-Channel Audio Input 2 6 ———— BEEP Audible Alert Beep Input 3, 19 7, 23 3, 19 7, 23 3, 19 7, 23 PGND Power Ground 484848 OUTL+ Left-Channel Positive Speaker Output 595959 OUTL- Left-Channel Negative Speaker Output 6, 16 10, 20 6, 16 10, 20 6, 16 10, 20 PVDD Speaker Amplifier Power Supply 711711 711 CPVDD Charge-Pump Power Supply 8 12 8 12 8 12 C1P Charge-Pump Flying-Capacitor Positive Terminal 913913 913 CPGND Charge-Pump Ground 10 14 10 14 10 14 C1N Charge-Pump Flying-Capacitor Negative Terminal 11 15 11 15 11 15 CPVSS Charge-Pump Output. Connect to VSS. 12 16 12 16 12 16 VSS Headphone Amplifier Negative Power Supply 13 17 13 17 13 17 HPOUTR Right-Channel Headphone Output 14 18 14 18 14 18 HPOUTL Left-Channel Headphone Output 15 19 15 19 15 19 HPVDD Headphone Positive Power Supply 17 21 17 21 17 21 OUTR- Right-Channel Negative Speaker Output 18 22 18 22 18 22 OUTR+ Right-Channel Positive Speaker Output 20 24 20 24 20 24 HPS Headphone Sense Input 21 25 21 25 21 25 BIAS Common-Mode Bias Voltage. Bypass with a 1 µF capacitor to GND. 22 26 22 26 22 26 SHDN Shutdown. Drive SHDN low to disable the device. Connect SHDN to VDD for normal operation. 23 27 ———— GAIN2 Gain Control Input 2 24 28 ———— GAIN1 Gain Control Input 1 25 1 25 1 25 1 VDD Power Supply 26 2 26 2 23, 26 2, 27 GND Ground 27 3 — — 28 4 INR Right-Channel Audio Input 28 4 ———— VOL Analog Volume Control Input — — 1 5 — — INL1 Left-Channel Audio Input 1 — — 2 6 — — INL2 Left-Channel Audio Input 2 — — 23 27 — — IN1/2 Input Select — — 24 28 24 28 GAIN Gain Select — — 27 3 — — INR1 Right-Channel Audio Input 1 — — 28 4 — — INR2 Right-Channel Audio Input 2 ———— 1, 27 3, 5 N.C. No Connection. Not internally connected. |
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