Silicon Laboratories SI4421 manual Si4421 TYPICAL PERFORMANCE CHARACTERISTICS

Si4421

TYPICAL PERFORMANCE CHARACTERISTICS

Channel Selectivity and Blocking:

90
80
70
60
50
40
30
20										434 MHz
										868 MHz
10										ETSI
0
0	1	2	3	4	5	6	7	8	9	10	11	12
				CW interferer offset from carrier [MHz]

Note:

∙LNA gain maximum, filter bandwidth 67 kHz, data rate 9.6 kbps, AFC switched off, FSK deviation ± 45 kHz, Vdd = 2.7 V

∙Measured according to the descriptions in the ETSI Standard EN 300 220-1 v2.1.1 (2006-01 Final Draft), section 9

∙The ETSI limit given in the figure is drawn by taking -106dBm at 9.6kbps typical sensitivity into account, and corresponds to receiver class 2 requirements (section 4.1.1)

Phase Noise Performance in the 433, 868 and 915 MHz Bands:

433 MHz

868 MHz

915 MHz

(Measured under typical conditions: Top = 27 oC; Vdd = Voc = 2.7 V)

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