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MRF49XA-I/T Datasheet(PDF) 81 Page - Microchip Technology |
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MRF49XA-I/T Datasheet(HTML) 81 Page - Microchip Technology |
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81 / 102 page  © 2009-2011 Microchip Technology Inc. Preliminary DS70590C-page 81 MRF49XA Note 1: Typical Values: TA = 25°C, VDD = 3.3V. 2: BER = 10E – 3, BW = 67 kHz, Δf = 30 kHz, Baud Rate = 1.2 kbps, digital filter with AFC disabled. TABLE 5-4: RECEIVER AC CHARACTERISTICS(1) Parameters Condition Min Typ Max Unit Receiver Sensitivity 433 MHz band(2) —-112— dBm 868 MHz band(2) —-110— dBm 915 MHz band(2) — -109 — dBm Maximum RF Input Power LNA: High Gain 0 — — dBm RF Input Capacitance — — 1 — pF Receiver Spurious Emission —— — -60 dBm Receiver BW mode 0 — 67 — kHz Mode 1 — 134 — kHz Mode 2 — 200 — kHz Mode 3 — 270 — kHz Mode 4 — 340 — kHz Mode 5 — 400 — kHz RSSI Range — — 46 — dB RSSI Error — — ±6 — dB RSSI Power Supply Dependency When input signal level is lower than -54 dBm and greater than -100 dBm —+35 — mV/V Filter Capacitor for Analog RSSI —1 — — nF RSSI Programmable Level Steps —— 6 — dB Digital RSSI Response Time Until the RSSI signal goes high after the input signal exceeds the preprogrammed limit, CARRSI = 4.7 nF — 500 — μs Input IP3 In band interferers in high bands (868 MHz, 915 MHz) —-21 — dBm IIP3 (LNA – 6 dB gain) In band interferers in low band (433 MHz) —-15 — dBm IIP3 (LNA – 6 dB gain) Out of band interferers, l f-fO l > 4 MHz —-12 — dBm FSK Bit Rate With internal digital filters supported by design 0.6 — 115.2 kbps FSK Bit Rate With internal analog filters supported by design —— 256 kbps AFC Locking Range Δffsk: FSK deviation in the received signal — 0.8 – Δffsk —— |
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