CC1101_15 Datasheet, PDF (60/105 Pages) Texas Instruments – Low-Power Sub-1 GHz RF Transceiver

CC1101
868 MHz
Default Output
Power Power
Setting [dBm]
Current
Consumption,
Typ. [mA]
0xC6
9.6
29.4
915 MHz
Output
Power
[dBm]
Current
Consumption,
Typ. [mA]
8.9
28.7
Table 38: Output Power and Current Consumption for Default PATABLE Setting Using Wire-
Wound Inductors in 868/915 MHz Frequency Bands
315 MHz
433 MHz
Output
Power Setting
[dBm]
Current
Consumption, Setting
Typ. [mA]
Current
Consumption,
Typ. [mA]
-30
0x12
10.9
0x12
11.9
-20
0x0D
11.4
0x0E
12.4
-15
0x1C
12.0
0x1D
13.1
-10
0x34
13.5
0x34
14.4
0
0x51
15.0
0x60
15.9
5
0x85
18.3
0x84
19.4
7
0xCB
22.1
0xC8
24.2
10
0xC2
26.9
0xC0
29.1
868 MHz
Setting
Current
Consumption,
Typ. [mA]
0x03
12.1
0x0F
12.7
0x1E
13.4
0x27
15.0
0x50
16.9
0x81
21.0
0xCB
26.8
0xC2
32.4
915 MHz
Setting
Current
Consumption,
Typ. [mA]
0x03
12.0
0x0E
12.6
0x1E
13.4
0x27
14.9
0x8E
16.7
0xCD
24.3
0xC7
26.9
0xC0
31.8
Table 39: Optimum PATABLE Settings for Various Output Power Levels and Frequency Bands
Using Multi-layer Inductors
315 MHz
Default Output
Power Power
Setting [dBm]
Current
Consumption,
Typ. [mA]
0xC6
8.5
24.4
433 MHz
Output
Power
[dBm]
Current
Consumption,
Typ. [mA]
7.8
25.2
868 MHz
Output
Power
[dBm]
Current
Consumption,
Typ. [mA]
8.5
29.5
915 MHz
Output
Power
[dBm]
Current
Consumption,
Typ. [mA]
7.2
27.4
Table 40: Output Power and Current Consumption for Default PATABLE Setting Using Multi-layer
Inductors
25 Shaping and PA Ramping
With ASK modulation, up to eight power
settings are used for shaping. The modulator
contains a counter that counts up when
transmitting a one and down when transmitting
a zero. The counter counts at a rate equal to 8
times the symbol rate. The counter saturates
at FREND0.PA_POWER and 0 respectively.
This counter value is used as an index for a
lookup in the power table. Thus, in order to
utilize the whole table, FREND0.PA_POWER
should be 7 when ASK is active. The shaping
of the ASK signal is dependent on the
configuration of the PATABLE. Figure 32
shows some examples of ASK shaping.
SWRS061I
Page 60 of 98