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The RT5508 is a mono BTL class-D amplifier with cutting-edge speaker protection algorithm. Also, a built-in DC-DC step-up converter is used to provide efficient power for class-D amplifier. I2S interface supports two different audio sources while a pair of auxiliary DATAI/O is used for stereo mode or pass-through application. Chip information including gain, speaker protection output or current sense is able to be monitored via DATAO through proper register setting. Speaker protection provides mechanical / thermal protection with accuracy of 10%/±10°C of rated limit.

Applications

  • Smart Phone
  • Tablet
Key Spec.
RT5508
Status Active
Output Channels 1
Vin (min) (V) 2.7
Vin (max) (V) 5.3
Pout @THD+N=10% (W) 2
Pout @THD+N=1% (W) 1.6
SNR (dB) 96
Amplifier Type Class-D;Class-G
Features Current Mode Control;DCR Current Sense;OCP;OTP;OVP;UVLO
Package Type WL-CSP2.87x2.07-29(BSC)
Features
  • Class-D Speaker AMP
    ► 1.6W Output Power @ 5.3V, 8Ω Load, THD < 1%
    ► 0/3/6/9/12/15dB Boost Gain
    ► 20μV Output Noise @ 0dB Gain
  • Boost Converter
    ► Adaptive Boost For Speaker, Boost from Battery Supply Up to Programmed Voltage, Max 5.3V
    ► Power Modes : Adaptive Boost, Fixed Boost, Bypass Mode
    ► Switching Frequency 2MHz, Maximum Output Current 1A
    ► Support CCM / DCM Compensation, Feedback ADC
    ► Digital Part : Voltage Loop in Boost Mode
  • Digital
    ► Digital Audio Interface Support I2S, Left-Justified, Right-Justified
    ► I2S Sampling Rate Support up to 48kHz, 24-bit
    ► Digital Filter, Digital Volume, Multi-Band DRC
    ► Speaker Protection
    ► Speaker Amplitude Estimation Accuracy : Error < 10%
    ► Bl Calibration Function
    ► Temperature Sensing
    ► Speaker Temperature Estimation Accuracy : Error < ±10°C
Datasheet
TitleLast UpdateDownload
Speaker Amplifier with Speaker Protection2017/02/01
Please confirm with our distributor or sales representative for actual stock status.
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