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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8753LEB/V датащи(PDF) 25 Page - Wolfson Microelectronics plc |
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WM8753LEB/V датащи(HTML) 25 Page - Wolfson Microelectronics plc |
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25 / 87 page  WM8753L Advanced Information w AI Rev 3.1 June 2004 25 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION [8:7] MIC2BOOST[1:0] 00 MIC2 Preamp Gain Control 00 : +12dB 01 : +18dB 10 : +24dB 11 : +30dB R47 (2Fh) Mic Input Boost [6:5] MIC1BOOST[1:0] 00 MIC1 Preamp Gain Control 00 = +12dB 01 = +18dB 10 = +24dB 11 = +30dB Table 10 MIC Preamp Gain Control The suggested configuration for the external microphone circuit is shown in Figure 7. Figure 7 Suggested External Microphone Input Configuration DIFFERENTIAL OPERATION It is possible to connect up to two mics differentially. Microphone1 is connected between the MIC1 and MIC1N inputs and microphone2 is connected between the MIC2 and MIC2N inputs. It should be noted that in differential mode, with mic inputs routed to the ADCs, an extra invert occurs in the MIC1 (left ADC) path due to the extra mixer. This can be compensated for by inverting the left ADC signal back again using ADCPOL. |
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