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CC2500-RTR1 数据表(PDF) 8 Page - Texas Instruments |
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CC2500-RTR1 数据表(HTML) 8 Page - Texas Instruments |
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8 / 84 page  CC2500 PRELIMINARY Data Sheet (Rev.1.2) SWRS040A Page 8 of 83 11.1 mA Transmit mode, –12 dBm output power 15.1 mA Transmit mode, -6 dBm output power Current consumption, TX states 21.2 mA Transmit mode, 0 dBm output power Table 4: Current consumption 4.2 RF Receive Section Tc = 25 °C, VDD = 3.0 V if nothing else stated. All measurement results obtained using the CC2500EM reference design. Parameter Min Typ Max Unit Condition/Note Digital channel filter bandwidth 58 812 kHz User programmable. The bandwidth limits are proportional to crystal frequency (given values assume a 26.0 MHz crystal). 2.4 kbps data rate, current optimized, MDMCFG2.DEM_DCFILT_OFF = 1 (FSK, 1% packet error rate, 20 bytes packet length, 203 kHz digital channel filter bandwidth) Receiver sensitivity –104 dBm The sensitivity can be improved to typically –106 dBm by setting MDMCFG2.DEM_DCFILT_OFF = 0 . The typical current consumption is in this case 17.0 mA at sensitivity llimit. Saturation –13 dBm Adjacent channel rejection 23 dB Desired channel 3 dB above the sensitivity limit. 250 kHz channel spacing Alternate channel rejection 31 dB Desired channel 3 dB above the sensitivity limit. 250 kHz channel spacing See Figure 22 for plot of selectivity versus frequency offset 10 kbps data rate, current optimized, MDMCFG2.DEM_DCFILT_OFF = 1 (FSK, 1% packet error rate, 20 bytes packet length, 232 kHz digital channel filter bandwidth) Receiver sensitivity –99 dBm The sensitivity can be improved to typically –101 dBm by setting MDMCFG2.DEM_DCFILT_OFF = 0 . The typical current consumption is in this case 17.3 mA at sensitivity llimit. Saturation –9 dBm Adjacent channel rejection 18 dB Desired channel 3 dB above the sensitivity limit. 250 kHz channel spacing Alternate channel rejection 25 dB Desired channel 3 dB above the sensitivity limit. 250 kHz channel spacing See Figure 23 for plot of selectivity versus frequency offset 250 kbps data rate, MDMCFG2.DEM_DCFILT_OFF = 0 (MSK, 1% packet error rate, 20 bytes packet length, 540 kHz digital channel filter bandwidth) Receiver sensitivity –89 dBm Saturation –13 dBm Adjacent channel rejection 21 dB Desired channel 3 dB above the sensitivity limit. 750 kHz channel spacing Alternate channel rejection 30 dB Desired channel 3 dB above the sensitivity limit. 750 kHz channel spacing See Figure 24 for plot of selectivity versus frequency offset |
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