Si4455
6 Rev 1.1
Table 4. Receiver AC Electrical Characteristics1
Parameter Symbol Test Condition Min Typ Max Unit
RX Frequency
Range
FRX 283 — 350 MHz
425 — 525 MHz
850 — 960 MHz
RX Sensitivity PRX-_2 (BER < 0.1%)
(2.4 kbps, GFSK, BT = 0.5,
F = 30 kHz, 114 kHz Rx BW)2
—–116—dBm
PRX-_40 (BER < 0.1%)
(40 kbps, GFSK, BT = 0.5,
F = 25 kHz, 114 kHz Rx BW)2
—–108—dBm
PRX-_128 (BER < 0.1%)
(128 kbps, GFSK, BT = 0.5,
F = 70 kHz, 305 kHz Rx BW)2
—–103—dBm
PRX-_OOK (BER < 0.1%, 1 kbps, 185 kHz Rx BW,
OOK, PN15 data)2
—–113—dBm
(BER < 0.1%, 40 kbps, 185 kHz Rx BW,
OOK, PN15 data)2
—–102—dBm
RX Channel Bandwidth2BW 40 — 850 kHz
BER Variation vs Power
Level2
PRX_RES Up to +5 dBm Input Level — 0 0.1 ppm
RSSI Resolution RESRSSI —±0.5—dB
1-Ch Offset Selectivity2C/I1-CH Desired Ref Signal 3 dB above sensitiv-
ity, BER < 0.1%. Interferer is CW and
desired modulated with 1.2 kbps,
F = 5.2 kHz, GFSK with BT= 0.5,
RX BW = 58 kHz
channel spacing = 100 kHz
— –56 — dB
2-Ch Offset Selectivity2C/I2-CH — –59 — dB
Blocking 200 kHz–1 MHz 200KBLOCK Desired Ref Signal 3 dB above sensitiv-
ity, BER < 0.1%. Interferer is CW and
desired modulated with 1.2 kbps
F = 5.2 kHz GFSK with BT = 0.5,
RX BW = 58 kHz
— –58 — dB
Blocking 1 MHz Offset21MBLOCK — –61 — dB
Blocking 8 MHz Offset28MBLOCK — –79 — dB
Image Rejection2ImREJ Rejection at the image frequency
IF = 468 kHz
— –35 — dB
Spurious Emissions3POB_RX1 Measured at RX pins — –54 — dBm
Notes:
1. All specifications guaranteed by production test unless otherwise noted. Production test conditions and max limits are
listed in section "1.1. Definition of Test Conditions" on page 11.
2. Guaranteed by qualification. Qualification test conditions are listed in section "1.1. Definition of Test Conditions" on page
11.
3. Emissions specifications are based on frequency, matching components, and board layout.
