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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ES9822QPRO 데이터시트(PDF) 9 Page - ESS Technology,Inc |
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ES9822QPRO 데이터시트(HTML) 9 Page - ESS Technology,Inc |
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9 / 126 page  0.3 ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 WWW.ESSTECH.COM 9 ES9822 PRO Product Datasheet Digital Features Digital Signal Path SABRE ADC DIGITAL PATH (2 CHANNEL) -32 6 Distortion Compensation DC Block IIR 128xFS IIR 8xFS DFIR 1xFS ASP FORMATTING TDM/I2S/ DSD/SPDIF VOLUME CONTROL x1, x2, x4 GAIN CLIP DETECTION 32 32 32 32 32 32 32 ADC DATA I2S Decoder Programmable Delay Figure 3 - Digital Signal Path THD Compensation 3 THD Compensation minimizes the non-linearities of the ADCs. The ES9822 PRO can help compensate for system second and third harmonic distortion. THD compensation can be enabled or bypassed by setting ADCx_ENABLE_THD_COMP for each channel THD Compensation Enable Registers • Register 102 [0]: ADC1_ENABLE_THD_COMP • Register 119 [0]: ADC2_ENABLE_THD_COMP • Register 136 [0]: ADC3_ENABLE_THD_COMP • Register 153 [0]: ADC4_ENABLE_THD_COMP For best results, compensation coefficients should be tuned for each device in-situ. DC Block The ES9842 has a built in DC blocking filter. Please ask for an application note that is available showing an improved filter using the built in ASPs. Volume Control This volume control is intended for use during audio playback. Each channel can be digitally attenuated from 0dB to –84dB in 0.5dB steps. The attenuation circuit automatically uses micro-stepping between 0.5dB register settings so that no switching noise occurs during the volume control transition. When a new volume level is set, the attenuation circuit will ramp softly to the new level. Each 0.5dB step takes up to 64 intermediate steps depending on the CHx VOLUME RATE setting. Volume Level Configuration Registers • Register 109-110: ADC CH1 VOLUME • Register 126-127: ADC CH2 VOLUME Volume Rate Configuration Registers • Register 111: ADC CH1 VOLUME RATE • Register 128: ADC CH2 VOLUME RATE 3 For more information on using THD Compensation, please reference the THD Compensation Application Note. Available from your local FAE upon request. |
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