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MAS9191A 数据表(PDF) 2 Page - Micro Analog systems |
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MAS9191A 数据表(HTML) 2 Page - Micro Analog systems |
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2 / 36 page ![]() 2 DA9191A.000 July 31, 1997 PIN CONFIGURATION AGND TX TAUDOUT TAUDIN LPFIN VSAT VDAT TXACCOUT COUT CAMP2I CWCIN CAMP20 COMPIN MICOUT EINR STGT EST RAUDIN RXACCOUT EXPOUT TXACCIN PREIN 12 13 14 15 16 33 34 35 36 37 38 1 2 3 4 5 6 7 8 9 10 11 RXACCIN EWCIN EAMPOUT EXPIN VDAR VSAR RBPFOUT RBPFIN DEOUT VREF 39 40 41 42 43 44 45 46 47 48 TQFP64 package PIN DESCRIPTION Pin name Pin Type Function AGND 1 AO Signal ground. The signal ground is generated internally and is equal to VDD/2. The analog ground needs an external capacitor connected to system ground. TX 2 AO Transmitted data signal output. Connect this output through a 22nF capacitor to the transmitter. TAUDOUT 3 AO TX audio output from the TX audio block.. TAUDIN 4 AI TX audio input. The input for the TX audio signal, normally connected through a 22nF capacitor to TAUDOUT LPFIN 5 AI Input for TX limiter, lowpass filter or GC6 depending on the position of switches S15 and S16. The pin is normally left unconnected. VSAT 6 G Ground for TX. Connect to system ground. VDAT 7 P Power supply for TX block. Use a bypass capacitor between pins VSAT and VDAT. TXACCIN 8 AI TX block extra Op Amp input. See application note in the APPLICATIONS section. TXACCOUT 9 AO TX block Op Amp output. PREIN 10 AI Pre-emphasis filter input. Filter has a +6dB/octave (±1dB) frequency response in the range 300Hz...3kHz. COUT 11 AO Compressor output signal. The compression ratio is 2:1 |
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