Description

High Fidelity, Low Power, Integrated Stereo Audio Amplifier Features: Flexible architecture to interface with all digital-to-analog converters (DACs) Accepts differential current or voltage input (provides single-ended voltage output)  High output current drive capability  Greater than 100 mA rms output current  Accurately reproduces large music transients into heavy loads (16 Ω to 32 Ω) Excellent audio fidelity  −121 dB total harmonic distortion plus noise (THD + N) at 1 kHz, 2 V rms output with ±5 V supply and 32 Ω load  Low output integrated noise (10 Hz to 22 kHz) of 1.8 μV rms with A-weighted filter  Supply range: ±3.3 V to ±6 V (typical) Low power operation  Enabled: 60 mW, VCC = +5 V, VEE = −5 V Disabled/voice select: <30 μA Low power disable mode with high output impedance High-Z in power-down mode eliminating voice mode switch from the high fidelity path Greater than 87 dB power supply rejection ratio (PSRR) at 20 kHz  Adjustable input common-mode voltage with resistor programmable reference voltage 1.45 V (typical) with no external components Capable of two single-pole, low-pass filters in series  2.2 nF maximum input capacitor Second filter between the GAINx and FILTx pins Pop and click noise suppression  Signal chain integration supports small printed circuit board (PCB) area  Compact 4 mm × 4 mm LFCSP package