CC2550RTK datasheet(6/55 Pages) TI

Part #	CC2550RTK

Description	Single Chip Low Cost Low Power RF Transmitter

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Manufacturer	TI [Texas Instruments]

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CC2550

PRELIMINARY Data Sheet (Rev.1.2)

SWRS039A

Page 6 of 54

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.

Parameter

Min

Typ

Max

Unit

Condition/Note

Differential load

impedance

80 + j74

Ω

Differential impedance as seen from the RF-port (RF_P

and RF_N) towards the antenna. Follow the CC2550EM

reference design available from the TI and Chipcon

websites.

Output power, highest

setting

+1

dBm

Output power is programmable and is available across the

entire frequency band.

Delivered to 50

Ω single-ended load via CC2550EM

reference RF matching network.

Output power, lowest

setting

–30

dBm

Output power is programmable and is available across the

entire frequency band.

Delivered to 50

Ω single-ended load via CC2550EM

reference RF matching network.

Adjacent channel

power

–19

dBc

1 MHz channel spacing (±1 MHz from carrier) and 500

kbps MSK.

Alternate channel

power

–39

dBc

1 MHz channel spacing (±2 MHz from carrier) and 500

kbps MSK.

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

Table 5: RF transmit parameters

4.3

Crystal Oscillator

Tc = 25

°C, VDD = 3.0 V if nothing else stated.

Parameter

Min

Typ

Max

Unit

Condition/Note

Crystal frequency

26

27

MHz

Tolerance

±40

ppm

This is the total tolerance including a) initial tolerance, b) crystal

loading, c) aging and d) temperature dependence.

The acceptable crystal tolerance depends on RF frequency and

channel spacing / bandwidth.

ESR

100

Ω

Start-up time

300

µs

Measured on CC2550 EM reference design.

Table 6: Crystal oscillator parameters

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CC2550RTK Datasheet(PDF) 6 Page - Texas Instruments

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