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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TH71221 датащи(PDF) 6 Page - Melexis Microelectronic Systems |
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TH71221 датащи(HTML) 6 Page - Melexis Microelectronic Systems |
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6 / 44 page  TH71221 27 to 930MHz FSK/FM/ASK Transceiver 39010 071221 Page 6 of 44 Data Sheet Rev. 009 Nov/15 2 Pin Definitions and Descriptions Pin No. Name I/O Type Functional Schematic Description 1 IN_IFA input IF amplifier input, approx. 2 k single-ended 2 VCC_IF supply positive supply of LNA, MIX, IFA, FSK Demodulator, PA, OA1 and OA2 3 IN_DEM analog I/O IF amplifier output and de- modulator input, connection to external ceramic discrimi- nator or LC tank 4 INT2/PDO output OA2 output or peak detector output, high impedance in transmit and idle mode 5 INT1 input inverting inputs of OA1 and OA2 6 OUT_DEM analog I/O demodulator output and non-inverting OA1 input, high impedance in transmit and idle mode 7 RSSI output RSSI output, approx. 31 k 50 IN_IFA 1 VCC VCC 140µA VEE VEE 2.2k VCC VEE IN_DEM 3 10µA VCC VEE 100µA 90k 60k 1.5p VCC VEE INT2/PDO 4 OA2 bias VEE VCC INT1 5 OUT_DEM 6 VCC 120 VEE VCC 10p 1k 10p OA1 + 200k VCC VEE RSSI 7 120 |
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