SP Amp Line Driver Amp Quad 5.5V 20-Pin QSOP

The MAX9727 quad audio line driver with 3VRMS output is ideal for portable audio devices where board space and cost is at a premium. The device uses Maxim"s DirectDrive architecture that produces a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors and saving cost, board space, and component height. A high 100dB PSRR and low 0.0005% THD+N ensures clean, low-distortion amplification of the audio signal. Each MAX9727 amplifier can provide 3VRMS to a 1kO load with less than 0.003% THD+N while operating from a single +5V supply. Each MAX9727 amplifier can provide 2VRMS to a 1kO load with less than 0.003% THD+N while operating from a single +3.3V supply. A shutdown input disables the amplifiers and reduces quiescent current consumption to less than 100nA. The MAX9727 features Maxim"s comprehensive click-and-pop suppression circuitry that reduces audible clicks and pops during startup and shutdown. The MAX9727 operates from a single 2.7V to 5.5V supply, consumes only 3mA of supply current per channel, and is specified over the -40°C to +85°C extended temperature range.

• 2.7V to 5.5V Single-Supply Operation
• High 100dB PSRR
• 109dB Signal-to-Noise Ratio (SNR)
• Ground-Referenced Outputs
• No Audible Clicks or Pops at Power-Up/Down
• Differential Inputs
• 3V_RMS into 1kO Load at 5V
• 2V_RMS into 1kO Load at 3.3V
• 3mA Supply Current Per Channel
• Unity-Gain Stable
• 100nA Low-Power Shutdown Mode
• C_LOAD Drive > 220pF
• ±8kV HBM ESD-Protected Outputs