CC2400_08 Datasheet, PDF (48/84 Pages) Texas Instruments – 2.4 GHz Low-Power RF Transceiver

CC2400
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).
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
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
The VCO frequency is related to
FSDIV.FREQ[9:0] as follows:
f_VCO = 2 ⋅ (2047 + FREQ[9 : 0])
operation the bias current and tuning
range of the VCO are automatically
calibrated every time the RX mode or TX
mode is enabled.
register value, output power and current
consumption.
PA_LEVEL[2:0]
[binary]
RF frequency 2.45 GHz
Output power
Current
[dBm]
consumption,
typ. [mA]
000
-25
11
001
-15
12
010
-10
13
011
-7
14
100
-4.6
16
101
-2.8
17
110
-1.3
18
111
0
19
Table 19. Output power settings and typical current consumption
SWRS042A
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