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MAX9708 Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX9708 Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 22 page MAX9708 20W/40W, Filterless, Spread-Spectrum, Mono/Stereo, Class D Amplifier 9 Maxim Integrated Pin Description (continued) PIN NAME FUNCTION 8 C1N Charge-Pump Flying Capacitor C1, Negative Terminal 9 C1P Charge-Pump Flying Capacitor C1, Positive Terminal 10 CPVDD Charge-Pump Power Supply. Bypass to PVDD with a 1µF capacitor as close to the pin as possible. 11 SYNCOUT Open-Drain, Slew-Rate Limited Clock Output. Pullup with a 10k Ω resistor to REG. 13 SYNCIN Clock Synchronization Input. Allows for synchronization of the internal oscillator with an external clock. SYNCIN is internally pulled up to VREG with a 100k Ω resistor. 14 FS2 Frequency Select 2 15 FS1 Frequency Select 1 16 INL- Left-Channel Negative Input (Stereo Mode Only) 17 INL+ Left-Channel Positive Input (Stereo Mode Only) 18 MONO Mono/Stereo Mode Input. Drive logic-high for mono mode. Drive logic-low for stereo mode. 19, 20, 21 REG Internal Regulator Output Voltage (6V). Bypass with a 0.01µF capacitor to GND. 22, 23 GND Analog Ground 24 SS Soft-Start. Connect a 0.47µF capacitor to GND to utilize soft-start power-up sequence. 25 VDD Analog Power Supply. Bypass to GND with a 0.1µF capacitor as close to pin as possible. 26 INR- Right-Channel Negative Input. In mono mode, INR- is the negative input. 27 INR+ Right-Channel Positive Input. In mono mode, INR+ is the positive input. 28 G1 Gain Select Input 1 29 G2 Gain Select Input 2 30 SHDN Active-Low Shutdown Input. Drive SHDN high for normal operation. Drive SHDN low to place the device in shutdown mode. 31 MUTE Active-Low Mute Input. Drive logic-low to place the device in mute. In mute mode, Class D output stage is no longer switching. Drive high for normal operation. MUTE is internally pulled up to VREG with a 100k Ω resistor. 32 TEMP Thermal Flag Output, Open Drain. Pull up with a 10k Ω resistor to REG. 33 TH2 Temperature Flag Threshold Select Input 2 34 TH1 Temperature Flag Threshold Select Input 1 35 TH0 Temperature Flag Threshold Select Input 0 45, 46 OUTR- Right-Channel Negative Output 47, 48 OUTR+ Right-Channel Positive Output 51, 52 OUTL- Left-Channel Negative Output 53, 54 OUTL+ Left-Channel Positive Output EP EP Exposed Paddle. Connect to GND with multiple vias for best heat dissipation. |
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