Описание
The MAX9752/MAX9753/MAX9754 combine a high-efficiency, filterless, stereo Class D audio power amplifier with a DirectDrive headphone amplifier in a single device. The Class D amplifier operates from a single 4.5V to 5.5V supply and provides 2.2W per channel into a 4O load. The headphone amplifier operates from a single 3V to 5.5V supply, and uses Maxim"s DirectDrive architecture to produce a ground-referenced output from a single supply. The MAX9754 features a Class D stereo speaker amplifier and headphone driver. The MAX9752 adds an analog volume control and a BEEP input. The MAX9753 adds a stereo 2:1 input multiplexer. All devices feature logic-selectable gain, and a headphone sense input that detects the presence of a headphone. The MAX9752/MAX9753/MAX9754 come in 28-pin thin QFN (5mm x 5mm x 0.8mm) packages, and are specified over the extended -40°C to +85°C temperature range. For a pin-for-pin-compatible Class AB version of these devices, refer to the MAX9750/MAX9751/MAX9755 data sheet.
- PC2001 Compliant
- 2.2W Class D Stereo Speaker Amplifier
- Pin-for-Pin Compatible with Class AB MAX9750/MAX9751/MAX9755
- 85% Efficiency (RL = 8O, POUT = 1W)
- 62mW DirectDrive Headphone Amplifier
- High PSRR (70dB at 1kHz)
- Analog Volume Control (MAX9752)
- Beep Input with Glitch Filter (MAX9752)
- 2:1 Stereo Input MUX (MAX9753)
- ±8kV ESD-Protected Headphone Outputs
- No Output DC-Blocking Capacitors
- Industry-Leading Click-and-Pop Suppression
