Micro Analog Systems MAS9079
The MAS9079 AM-Receiver chip is a highly sensitive, simple to use AM receiver specially intended to receive time signals in the frequency range from 40 kHz to 100 kHz. The circuit has preamplifier, wide range automatic gain control, demodulator and output comparator built in. The output signal can be processed directly by an additional digital circuitry to extract the data from the received signal.DESCRIPTION
Only a few external components are required for time signal receiving. The control for AGC (automatic gain control) can be used to switch AGC on or off if necessary. MAS9079 supports tri band operation by switching between three crystal filters and two additional antenna tuning capacitors. MAS9079 has asymmetric input and different internal compensation capacitor options for compensating shunt capacitances of different crystals (See ordering information on page 9).FEATURES
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● Tri Band Receiver IC Highly Sensitive AM Receiver, 0.4 µVRMS typ. Wide Supply Voltage Range from 1.1 V to 5 V Very Low Power Consumption Power Down Control Fast Startup Only a Few External Components Necessary Control for AGC On Wide Frequency Range from 40 kHz to 100 kHz High Selectivity by Quartz Crystal Filter
APPLICATIONS
● Multi Band Time Signal Receiver WWVB (USA), JJY (Japan), DCF77 (Germany), MSF (UK), HGB (Switzerland) and BPC (China) BLOCK DIAGRAM QO3 RFI1 RFI2 RFI3 AGC Ampl...