CC2500-RTY1 datasheet(11/99 Pages) TI1

11 / 99 page

CC2500

SWRS040C

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 using 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

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.

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 variation in output

power across operating conditions and processing corners

for these settings.

Occupied bandwidth

(99%)

117

296

489

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

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

Restricted band in Europe

Restricted bands in USA

TX latency

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 Transmit Section

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