CC2500 datasheet(9/76 Pages) TI

9 / 76 page

CC2500

Preliminary Data Sheet (rev.1.1.)

SWRS040

Page 9 of 77

Parameter

Min

Typ

Max

Unit

Condition/Note

250 kbps data rate, reduced current, MDMCFG2.DEM_DCFILT_OFF = 1

(MSK, 1% packet error rate, 20 bytes packet length, 540 kHz digital channel filter bandwidth)

Receiver sensitivity

–87

dBm

Saturation

–13

dBm

Adjacent channel

rejection

Desired channel 3 dB above the sensitivity limit. 750 kHz

channel spacing

Alternate channel

rejection

Desired channel 3 dB above the sensitivity limit. 750 kHz

channel spacing

See Figure 20 for plot of selectivity versus frequency offset

500 kbps data rate, MDMCFG2.DEM_DCFILT_OFF = 0

(MSK, 1% packet error rate, 20 bytes packet length, 812 kHz digital channel filter bandwidth)

Receiver sensitivity

–82

dBm

Saturation

–18

dBm

Adjacent channel

rejection

Desired channel 3 dB above the sensitivity limit. 1 MHz

channel spacing

Alternate channel

rejection

Desired channel 3 dB above the sensitivity limit. 1 MHz

channel spacing

See Figure 21 for plot of selectivity versus frequency offset

General

Selectivity at 10 MHz

offset

Desired channel at –80 dBm. Compliant with ETSI EN 300

440 class 2 receiver requirements.

Selectivity at 20 MHz

offset

Desired channel at –80 dBm. Compliant with ETSI EN 300

440 class 2 receiver requirements.

Selectivity at 50 MHz

offset

Desired channel at –80 dBm. Compliant with ETSI EN 300

440 class 2 receiver requirements.

Spurious emissions

25 MHz – 1 GHz

Above 1 GHz

–57

–47

dBm

Table 5: RF Receive Parameters

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