Texas Instruments CC2500 User Manual

CC2500
S
WRS040
C
Page
11
of
89
4.3
RF Transmit Section
Tc = 25

C, VDD = 3.0 V, 0 dBm if nothing else stated. All measurement
results obtained
usi
ng the CC2500EM reference
design
(
[4]
)
.
Parameter
Min
Typ
Max
Unit
Condition/Note
Differential load
impedance
80 + j74

Differential impedance as seen from the RF
-
port (
RF_P
and
RF_N
) towards the antenna.
Follow the CC2500EM
reference design
(
[4]
)
available from
the
TI
website.
Output power,
highest setting
+1
dBm
Output power is programmable and
full range
is available
across the entire frequency band
.
Del
ivered to a 50

single
-
ended load via
CC2500EM
reference design
(
[4]
)
RF matching network.
Output power,
lowest setting
–
30
dBm
Output power is programmable and full range is available
across the entire
frequency band.
Delivered to a 50

single
-
ended load via
CC2500EM
reference design
(
[4]
)
RF matching network.
It is possible to program less than
-
30 dBm output power,
but this is not recommended due to large v
ariation in output
power across operating conditions and processing corners
for these settings.
Occupied bandwidth
(99%)
91
117
296
489
kHz
kHz
kHz
kHz
2.
4
kBaud
, 38.2 kHz deviation,
2
-
FSK
10
kBaud
, 38.2 kHz deviation
, 2
-
FSK
250
kBaud
, MSK
500
kBaud
,
MSK
Adjacent channel
power (ACP)
-
28
-
27
-
22
-
21
dBc
dBc
dBc
dBc
2.4
kBaud
, 38.2 kHz deviation,
2
-
FSK, 250 kHz channel
spacing
10
kBaud
, 38.2 kHz deviation,
2
-
FSK, 250 kHz channel
spacing
250
kBaud
, MSK, 750 kHz channel spacing
500
kBaud
, MSK, 1 MHz
channel spacing
Spurious emissions
25 MHz
–
1 GHz
47
-
74, 87.5
-
118, 174
-
230, 470
-
862 MHz
1800
-
1900 MHz
At 2
∙RF and 3∙RF
Otherwise above 1
GHz
–
36
–
54
–
47
–
41
–
30
dBm
dBm
dBm
dBm
dBm
Restricted band in Europe
Restricted bands in USA
TX latency
8
bit
Serial operation. Time from
sampling
the data on the
transmitter
data input
pin until it is observed on the RF
output ports.
Table
6
: RF
T
ransmit
Section

Texas Instruments CC2500 Specifications

General

Brand	Texas Instruments
Model	CC2500
Category	Transceiver
Language	English