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CC2420Z-RTR1 数据表(PDF) 11 Page - Texas Instruments |
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CC2420Z-RTR1 数据表(HTML) 11 Page - Texas Instruments |
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11 / 92 page ![]() CC2420 SWRS041B Page 11 of 89 Parameter Min. Typ. Max. Unit Condition / Note Frequency error tolerance -300 300 kHz Difference between centre frequency of the received RF signal and local oscillator frequency [1] requires 200 kHz Symbol rate error tolerance 120 ppm Difference between incoming symbol rate and the internally generated symbol rate [1] requires 80 ppm Data latency 3 µs Processing delay in receiver. Time from complete transmission of SFD until complete reception of SFD, i.e. from SFD goes active on transmitter until active on receiver. 6.4 RSSI / Carrier Sense Parameter Min. Typ. Max. Unit Condition / Note Carrier sense level − 77 dBm Programmable in RSSI.CCA_THR RSSI dynamic range 100 dB The range is approximately from –100 dBm to 0 dBm RSSI accuracy ± 6 dB See page 48 for details RSSI linearity ± 3 dB RSSI average time 128 µs 8 symbol periods, as specified by [1] 6.5 IF Section Parameter Min. Typ. Max. Unit Condition / Note Intermediate frequency (IF) 2 MHz 6.6 Frequency Synthesizer Section Parameter Min. Typ. Max. Unit Condition / Note Crystal oscillator frequency 16 MHz See page 53 for details. Crystal frequency accuracy requirement - 40 40 ppm Including aging and temperature dependency, as specified by [1] Crystal operation Parallel C381 and C391 are loading capacitors, see page 53 |
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