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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. TECHNICAL BRIEF
LGE Internal Use Only
We use MEMS MIC especially effective against RF noise
.
Audio ADC and PGA
The Audio ADC is a high-order single-bit sigma-delta ADC that includes a switched-capacitor PGA at the
input.
Digital Filters
The AD6725-ATLAS3H LITE Audio Section provides two digital filters. The voiceband filter is used for
applications with a 8 kHz digital sample rate. The high-quality audio filter is used for applications with
higher digital sample rates.
Figure 3-2-5 GM200 input circuit diagram
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