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AK7735 Datasheet(PDF) 96 Page - Asahi Kasei Microsystems |
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AK7735 Datasheet(HTML) 96 Page - Asahi Kasei Microsystems |
96 / 142 page [AK7735] 016014707-E-00 2016/12 - 96 - 3. Microphone Bias Output The AK7735 has a line of microphone bias output. The power supply of microphone is supplied from the MPWR pin by setting PMMB bit = “1”. The output voltage is 2.5V (AVDD=3.3V) and the load resistance is min. 2kΩ. PMMB bit MPWR pin 0 Hi-Z (default) 1 Output Table 48. Microphone Bias Output INP1 AK7735 Microphone 100nF 4.7k MPWR pin PMMB bit MIC-Amp Lch INN1 Microphone 4.7k 4.7k 4.7k INP2 INN2 MIC-Amp Rch 100nF AIN1L AK7735 Microphone 100nF MPWR pin PMMB bit MIC-Amp Lch Microphone 4.7k 4.7k AIN1R MIC-Amp Rch 100nF Figure 71. MIC Block Circuit (Differential Input) Figure 72. MIC Block Circuit (Single-end Input) |
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