RFM22B/23B
Table 3. Receiver AC Electrical Characteristics
Parameter
RX Frequency
Range—RFM22B/23B
RX Sensitivity
Symbol
F
RX
P
RX_2
Conditions
433MHz band
868MHz band
915MHz band
(BER < 0.1%)
(2 kbps, GFSK, BT = 0.5,
f
=
5
kHz)
special crystal is used on the module
(BER < 0.1%)
(1.2 kbps, FSK, BT=0.5,
f
=
45kHz)
(BER < 0.1%)
(100 kbps, GFSK, BT = 0.5,
f
=
50
kHz)
(BER < 0.1%)
(125 kbps, GFSK, BT = 0.5,
f
=
62.5
kHz)
(BER < 0.1%)
(4.8 kbps, 350 kHz BW, OOK)
(BER < 0.1%)
(40 kbps, 400 kHz BW, OOK)
Min
413
848
895
—
–121
Typ
Max
453
888
935
—
Units
MHz
MHz
MHz
dBm
P
RX_40
—
–114
—
dBm
P
RX_100
—
–104
—
dBm
P
RX_125
—
–101
—
dBm
P
RX_OOK
—
—
–110
–102
—
—
dBm
dBm
RX Channel Bandwidth
BW
2.6
—
620
kHz
BER Variation vs Power
Level
RSSI Resolution
1-Ch
Offset Selectivity
2-Ch
Offset Selectivity
3-Ch
Offset Selectivity
Blocking at 1 MHz Offset
Blocking at 4 MHz Offset
Blocking at 8 MHz Offset
Image Rejection
Spurious Emissions
P
RX_RES
Up to +5 dBm Input Level
—
0
0.1
ppm
RES
RSSI
Desired Ref Signal 3 dB above sensitivity,
C/I
2-CH
BER < 0.1%. Interferer and desired modu-
lated with 40 kbps
F
= 20 kHz GFSK with
C/I
3-CH
BT = 0.5, channel spacing = 150 kHz
1M
BLOCK
Desired Ref Signal 3 dB above sensitivity.
Interferer and desired modulated with
4M
BLOCK
40 kbps
F
= 20 kHz GFSK with BT = 0.5
8M
BLOCK
C/I
1-CH
Im
REJ
P
OB_RX1
Rejection at the image frequency.
IF=937 kHz
Measured at RX pins
—
—
—
—
—
—
—
—
—
±0.5
–31
–35
–40
–52
–56
–63
–30
—
—
—
—
—
—
—
—
—
–54
dB
dB
dB
dB
dB
dB
dB
dB
dBm
Tel: +86-755-82973805
Fax: +86-755-82973550
E-mail: sales@hoperf.com http://www.hoperf.com
6
HOPERF [ Hope Microelectronics co., Ltd ]
