CC2540F128, CC2540F256

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SWRS084 – OCTOBER 2010

RF TRANSMIT SECTION

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Delivered to a single-ended 50-

Ω load through a balun using

4

maximum recommended output power setting

Output power

dBm

Delivered to a single-ended 50-

Ω load through a balun using minimum

–20

recommended output power setting

Programmable output power

Delivered to a single-ended 50

Ω load through a balun

24

dB

range

Conducted measurement with a 50-

Ω single-ended load. Complies

Spurious emissions

with EN 300 328, EN 300 440 class 2, FCC CFR47, Part 15 and ARIB

–41

dBm

TX mode, –23-dBm output power, no peripherals active, low MCU

21.1

activity, MCU at 250 kHz

TX mode, –6-dBm output power, no peripherals active, low MCU

23.8

activity, MCU at 250 kHz

Current consumption

mA

TX mode, 0-dBm output power, no peripherals active, low MCU

27

activity, MCU at 250 kHz

TX mode, 4-dBm output power, no peripherals active, low MCU

31.6

activity, MCU at 250 kHz

Differential impedance as seen from the RF port (RF_P and RF_N)

Optimum load impedance

70 + j30

Ω

toward the antenna

(1)

Designs with antenna connectors that require conducted ETSI compliance at 64 MHz should insert an LC resonator in front of the

antenna connector. Use a 1.6-nH inductor in parallel with a 1.8-pF capacitor. Connect both from the signal trace to a good RF ground.

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