Texas Instruments CC2500 - Page 10

CC2500
S
WRS040
C
Page
10
of
89
Parameter
Min
Typ
Max
Unit
Condition/Note
250
kBaud
data rate
, sensitivity optimized,
MDMCFG2.DEM_DCFILT_OFF
=
0
(MSK, 1%
packet error rate, 20 bytes packet length, 540 kHz digital channel filter bandwidth)
Receiver sensitivity
–
89
dBm
Saturation
–
13
dBm
Adjacent channel rejection
21
dB
Desired channel 3 dB above the sensitivity limit. 750
kHz channel spacing
Al
ternate channel rejection
30
dB
Desired channel 3 dB above the sensitivity limit. 750
kHz channel spacing
See
Fi
gure
24
for plot of selectivity versus frequency
offset
Blocking
±10 MHz offset
±20 MHz off
set
±50 MHz offset
46
53
55
dB
dB
dB
Wanted signal 3 dB above sensitivity level.
Compliant with ETSI EN 300 440 class 2 receiver
requirements.
250
kBaud
data rate, current optimized,
MDMCFG2.DEM_DCFILT_OFF
=1
(MSK, 1% packet error rate, 20 bytes pack
et length, 540 kHz digital channel filter bandwidth)
Receiver sensitivity
–
87
dBm
Saturation
–
12
dBm
Adjacent channel rejection
21
dB
Desired channel 3 dB above the sensitivity limit. 750
kHz channel spacing
Alternate channel rejection
30
dB
Desired channel 3 dB above the sensitivity limit. 750
kHz channel spacing
See
Figure
25
for plot of selectivity versus frequency
offset
Blocking
±10 MHz offset
±20 MHz offset
±50 MHz offset
46
52
55
dB
dB
dB
Wanted signal 3 dB above sensitivity level.
Compliant with ETSI EN 300 440 class 2 receiver
requirements.
500
kBaud
data rate,
MDMCFG2.DEM_DCFILT_OFF
=0
(
MDMCFG2.DEM_DCFILT_OFF
=1
cannot be used for data rates
>
250
kBaud
)
(MSK, 1% packet error ra
te, 20 bytes packet length, 812 kHz digital channel filter bandwidth)
Receiver sensitivity
–
83
dBm
Saturation
–
18
dBm
Adjacent channel rejection
14
dB
Desired channel 3 dB above the sensitivity limit. 1 MHz
channel spacing
Alternate channel re
jection
25
dB
Desired channel 3 dB above the sensitivity limit. 1 MHz
channel spacing
See
Figure
26
for plot of selectivity versus frequency
offset
Blocking
±10 MHz offset
±20 MHz offset
±50 MHz offset
40
48
50
dB
dB
dB
Wanted signal 3 dB above sensitivity level.
Compliant with ETSI EN 300 440 class 2 receiver
requirements.
General
Spurious emissions
25 MHz
–
1 GHz
Above 1 GHz
–
57
–
47
dBm
dBm
RX latency
9
bit
Serial operation. Time from
st
art of reception until data
is available
on the receiver data output pin is equal to 9
bit
.
Table
5
: RF
R
eceive
Section