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SSM2518 数据手册 ( 数据表 ) - Analog Devices

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零件编号
SSM2518

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  RevA  

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page
48 Pages

File Size
2 MB

生产厂家
ADI
Analog Devices ADI

GENERAL DESCRIPTION
The SSM2518 is a digital input, Class-D power amplifier that combines a digital-to-analog converter (DAC) and a sigma-delta (Σ-Δ) Class-D modulator. This unique architecture enables extremely low real-world power consumption from digital audio sources with excellent audio performance. The SSM2518 is ideal for power sensitive applications, such as mobile phones and portable media players, where system noise can corrupt small analog signals such as those sent to an analog input audio amplifier.

FEATURES
   Filterless, digital input Class-D amplifier
   Serial digital audio interface supports common formats
      I2S, left justified, right justified, TDM1-16, and PCM
   2 channels × 2 W into 4 Ω and 2 channels × 1.4 W into 8 Ω
      with 1% THD+N, when using a 5 V supply
   I2C control interface or standalone operation
   91% efficiency at full scale into an 8 Ω load
   97 dB signal-to-noise ratio (SNR), A-weighted
   80 dB power supply rejection ratio (PSRR) at 217 Hz
   Digital volume control: −71.25 dB to +24 dB in 0.375 dB steps
   Supports a wide range of sample rates from 8 kHz to 96 kHz
   Automatic sample rate detection
   Can operate using 64 × fS BCLK as the MCLK source
   2.5 V to 5.5 V speaker supply voltage (PVDD)
   1.62 V to 3.6 V digital supply voltage (DVDD)
   Pop-and-click suppression
   Short-circuit and thermal protection with programmable
      autorecovery
   Smart power-down when no input signal is detected
   Power-on reset
   Low power modes for performance/power trade-offs
   User selectable ultralow EMI emission mode
   Programmable dynamic range compression (DRC) with
      noise gate, expander, compressor, and limiter
   Available in two packages
      16-bump, 2.2 mm × 2.2 mm, 0.5 mm pitch WLCSP
      20-lead, 4.0 mm × 4.0 mm LFCSP

APPLICATIONS
   Mobile phones
   Portable media players
   Laptop PCs
   Wireless speakers
   Portable gaming
   Small LCD televisions
   Navigation systems

 

零件编号
产品描述 (功能)
PDF
生产厂家
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