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ES9820Q Datasheet(PDF) 9 Page - ESS Technology,Inc

Part # ES9820Q
Description  32-bit High-Performance 2-Channel ADC
PDF  117 Pages
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Manufacturer  ESS [ESS Technology,Inc]
Direct Link  http://www.esstech.com
Logo ESS - ESS Technology,Inc

ES9820Q Datasheet(HTML) 9 Page - ESS Technology,Inc

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CONFIDENTIAL ADVANCE INFORMATION 0.3
ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 WWW.ESSTECH.COM
9
ES9820 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 ES9820 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.
Audio Signal Processor (ASP) 4
The ES9820 includes 2 stereo audio signal processors (ASP) which can be used to implement both custom filter coefficients as well as custom filter
architectures. This feature may also be used to implement a programmable equalizer (PEQ) and other applications.
See Error! Reference source not found. diagram for location in the data path.
ASP Registers:
•
Registers 35-58
3
For more information on using THD Compensation, please reference the THD Compensation Application Note. Available from your local FAE upon
request.
4
For help with designing with the ASP, please reference the ASP GUIDE Application Note. Available from your local FAE upon request.



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