SI4438 Datasheet, PDF (6/44 Pages) Silicon Laboratories – Low active power consumption

Si4438
Table 3. Receiver AC Electrical Characteristics¹
Parameter
RX Frequency
Range (Si4438)
RX Sensitivity
RX Channel Bandwidth⁴
BER Variation vs Power
Level²
RSSI Resolution
1-Ch Offset Selectivity,
450 MHz²
Blocking 1 MHz Offset²
Blocking 8 MHz Offset²
Image Rejection²
Symbol
Test Condition
Min
F_RX
425
P_{RX_0.5}
(BER < 0.1%)
—
(500 bps, GFSK, BT = 0.5,
f = 250Hz)²
P_{RX_40}
(BER < 0.1%)
—
(40 kbps, GFSK, BT = 0.5,
f = 20 kHz)²
P_{RX_100}
(BER < 0.1%)
—
(100 kbps, GFSK, BT = 0.5,
f = 50 kHz)¹
P_{RX_9.6}
(BER < 0.1%)
—
(9.6 kbps, GFSK, BT = 0.5,
f = 4.8 kHz)²
P_{RX_OOK}
(BER < 0.1%, 4.8 kbps, 350 kHz BW,
OOK, PN15 data)²
—
(BER < 0.1%, 40 kbps, 350 kHz BW, —
OOK, PN15 data)²
(BER < 0.1%, 120 kbps, 350 kHz BW, —
OOK, PN15 data)²
BW
1.1
P_{RX_RES}
Up to +5 dBm Input Level
—
RES_RSSI
—
C/I_1-CH Desired Ref Signal 3 dB above sensitiv- —
ity, BER < 0.1%. Interferer is CW, and
desired is modulated with 2.4 kbps
F = 1.2 kHz GFSK with BT = 0.5, RX
channel BW = 4.8 kHz,
channel spacing = 12.5 kHz
1M_BLOCK Desired Ref Signal 3 dB above sensitiv- —
8M_BLOCK
ity, BER = 0.1%. Interferer is CW, and
desired is modulated with 2.4 kbps,
—
F = 1.2 kHz GFSK with BT = 0.5,
RX channel BW = 4.8 kHz
Im_REJ
Rejection at the image frequency.
—
IF = 468 kHz
Typ Max Unit
— 525 MHz
–124 — dBm
–108 — dBm
–103 — dBm
–114 — dBm
–108 — dBm
–102 — dBm
–98 — dBm
— 850 kHz
0
0.1 ppm
±0.5 —
dB
–58
—
dB
–75
—
dB
–84
—
dB
35
—
dB
Notes:
1. All minimum and maximum values are guaranteed by production test unless otherwise stated. All typical values apply at
VDD = 3.3 V and 25 °C unless otherwise stated.
2. BER is measured in the 450–470 MHz frequency band on RF evaluation boards.
3. For PER tests, 48 preamble symbols, 4 byte sync word, 10 byte payload and CRC-32 was used.
4. Guaranteed by bench characterization.
6
Rev 1.0