SI4455-C2A-GMR Datasheet, PDF (6/39 Pages) Silicon Laboratories – EASY-TO-USE, LOW-CURRENT OOK/(G)FSK SUB-GHZ TRANSCEIVER, TRANSMITTER, AND RECEIVER

Si4x55-C
Table 3. Receiver AC Electrical Characteristics
Parameter
Symbol
Test Condition
Min
RX Frequency
F_RX
284
Range
350
850
RX Sensitivity 915 MHz
P_{RX-_2}
(BER < 0.1%)
—
(2.4 kbps, GFSK, BT = 0.5,
F = 30 kHz, 114 kHz Rx BW)²
P_{RX-_40}
(BER < 0.1%)
—
(40 kbps, GFSK, BT = 0.5,
F = 25 kHz, 114 kHz Rx BW)²
P_{RX-_128}
(BER < 0.1%)
—
(128 kbps, GFSK, BT = 0.5,
F = 70 kHz, 305 kHz Rx BW)²
P_{RX-_OOK}
(BER < 0.1%, 1 kbps, 185 kHz Rx BW,
OOK, PN15 data)²
—
(BER < 0.1%, 40 kbps, 185 kHz Rx BW, —
OOK, PN15 data)²
RX Channel Bandwidth
BW
40
RSSI Resolution
1-Ch Offset Selectivity²
2-Ch Offset Selectivity²
RES_RSSI
Valid from –110 dBm to –90 dBm
—
C/I_1-CH
C/I_2-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
Blocking 200 kHz–1 MHz^{2 200K}BLOCK ^{Desired Ref Signal 3 dB above sensitiv- —}
Blocking 1 MHz Offset²
1M_BLOCK
ity, BER < 0.1%. Interferer is CW and
desired modulated with 1.2 kbps
—
Blocking 8 MHz Offset²
8M_BLOCK
F = 5.2 kHz GFSK with BT = 0.5,
—
RX BW = 58 kHz
Image Rejection²
Im_REJ
Rejection at the image frequency
—
IF = 468 kHz
Typ
—
—
—
–115.0
–107.6
–103.2
–113.5
–102.7
—
±0.5
–52
–56
–56
–71
–77
40
Max
350
525
960
—
—
—
—
—
850
—
—
—
—
—
—
—
Unit
MHz
MHz
MHz
dBm
dBm
dBm
dBm
dBm
kHz
dB
dB
dB
dB
dB
dB
dB
Notes:
1. All minimum and maximum values are guaranteed across the recommended operating conditions of supply voltage and
from –40 to +85 °C unless otherwise stated. All typical values apply at VDD = 3.3 V and 25 °C unless otherwise stated.
2. Conducted measurements on RF evaluation board. Specifications are dependent on frequency, matching components,
and board layout.
6
Rev 1.0