MAX9727 Datasheet | Maxim Integrated

Description 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 Direct Drive TM architecture that produces a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors, saving cost, board space, and ponent height. A high 100d B PSRR and low 0.0005% THD+N ensures clean, low-distortion amplification of the audio signal. Each MAX9727 amplifier can provide 3VRMS to a 1kΩ load with less than 0.003% THD+N while operating from a single +5V supply. Each MAX9727 amplifier can provide 2VRMS to a 1kΩ 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 100n A. The MAX9727 features Maxim’s prehensive click-andpop 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 3m A of supply current per channel and is specified over the -40°C to +85°C extended temperature range. Features - 2.7V to 5.5V Single-Supply Operation - High 100d B PSRR - 109d B Signal-to-Noise Ratio (SNR) - - - - - Ground-Referenced Outputs No Audible Clicks or Pops at Power-Up/Down Differential Inputs 3VRMS into 1kΩ Load at 5V 2VRMS into 1kΩ Load at 3.3V - 3m A Supply Current Per Channel - Unity-Gain Stable - 100n A Low-Power Shutdown Mode - CLOAD Drive > 220p F - ±8k V HBM ESD-Protected Outputs Ordering Information PART MAX9727EEP+ TEMP RANGE -40°C to +85°C PINPACKAGE 20 QSOP GAIN Adjustable Applications Set-Top Boxes Consumer and Professional Audio Equipment A/V Receivers CD and DVD Players Soundcards Portable Audio Devices +Denotes lead-free package. Simplified Block Diagram OUTA OUTD INA- IND- Pin Configuration INA+ IND+ INC+ TOP VIEW OUTA 1 INA- 2 INA+ 3 VDD 4 INB+ 5 INB- 6 OUTB 7 SHDN 8 PVDD 9 C1P 10 20 OUTD 19 IND18...