CC2400-RTR1 datasheet(48/84 Pages) TI

48 / 84 page

CC2400

SWRS042A

Page 48 of 83

40 VCO

The VCO is completely integrated and

operates at 4800 – 4966 MHz. The VCO

frequency is divided by 2 to generate

frequencies in the desired band (2400-

2483 MHz).

The

VCO

frequency

FSDIV.FREQ[9:0] as follows:

[ ]

(

)

2047

FREQ

VCO

⋅

41 VCO Self-Calibration

The characteristics of the VCO will vary

with temperature, changes in supply

voltages, and the desired operating

frequency. In order to ensure reliable

operation the bias current and tuning

range of the VCO are automatically

calibrated every time the RX mode or TX

mode is enabled.

42 Output Power Programming

The RF output power from the device is

programmable and is controlled by the

FREND.PA_LEVEL[2:0] register. Table

19 shows the relationship between the

consumption.

RF frequency 2.45 GHz

PA_LEVEL[2:0]

[binary]

Output power

[dBm]

Current

consumption,

typ. [mA]

000

-25

001

-15

010

-10

011

-7

100

-4.6

101

-2.8

110

-1.3

111

Table 19. Output power settings and typical current consumption

CC2400-RTR1 数据表(PDF) 48 Page - Texas Instruments

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