CC2550_13 Datasheet, PDF (6/61 Pages) Texas Instruments – Low-Cost Low-Power 2.4 GHz RF Transmitter

CC2550
4.2 RF Transmit Section
Tc = 25°C, VDD = 3.0 V, 0 dBm if nothing else stated. All measurement results obtained using the CC2550EM reference
design ([3]).
Parameter
Min
Differential load
impedance
Output power, highest
setting
Output power, lowest
setting
Adjacent channel
power (ACP) @2440
MHz
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
TX latency
Typ
Max
80 + j74
+1
–30
-25
-25
-25
-24
–36
–54
–47
–41
–30
8
Unit
Ω
dBm
dBm
dBc
dBc
dBc
dBc
Condition/Note
Differential impedance as seen from the RF-port (RF_P
and RF_N) towards the antenna. Follow the CC2550EM
reference design ([3]) available from the TI website.
Output power is programmable and full range is available
across the entire frequency band.
Delivered to 50 Ω single-ended load via CC2550EM
reference design ([3]) RF matching network.
Output power is programmable and full range is available
across the entire frequency band.
Delivered to 50 Ω single-ended load via CC2550EM
reference design ([3]) RF matching network.
It is possible to program less than -30 dBm output power,
but this is not recommended due to large variation in
output power across operating conditions and processing
corners for these settings.
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
dBm
dBm
dBm
dBm
dBm
Restricted band in Europe
Restricted bands in USA
bit Serial operation. Time from sampling the data on the
transmitter data input pin until it is observed on the RF
output ports.
Table 5: RF Transmit Parameters
SWRS039B
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