优势和特点

  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

产品详情

The SSM6322 is an integrated, dual-channel audio amplifier solution that interfaces directly with audio DAC/CODEC, maximizing the fidelity of high fidelity audio signal chains. The highly efficient design of the SSM6322 delivers outstandingaudio performance while minimizing power dissipation for maximum battery life in portable applications.

The SSM6322 features −121 dB THD + N at 1 kHz, along with very low output noise from 20 Hz to 20 kHz. The low power operation, high peak output current, and high PSRR make the SSM6322 an ideal candidate for applications that require high fidelity audio, high dynamic range, precision, and low power. This highly integrated drive solution also reduces development time while reducing board space and minimizing external components.

The SSM6322 is available in a 24-lead LFCSP package. The SSM6322 operates over the industrial temperature of −40°C to +85°C.

Applications

  High fidelity headphone driver

  Mobile phones

  Bluetooth speakers & headphones

  Gaming Notebooks and Tablets

  A/V receivers

  Professional audio equipment

  Audio test equipment

  Automobile infotainment system