CC1050SLASHR datasheet(21/40 Pages) TI

21 / 40 page

CC1050

SWRS044

Page 21 of 40

VCO current control

The VCO current is programmable and

should be set according to operating

frequency

and

output

power.

Recommended

settings

for

the

VCO_CURRENT bits in the CURRENT

32.

The bias current for the PA buffers are

also

programmable.

Recommended

settings for the PA_DRIVE bits in the

CURRENT register are shown in the

tables on page 32.

Power management

CC1050 offers great flexibility for power

management in order to meet strict power

consumption

requirements

battery

operated applications. Power Down mode

is controlled through the MAIN register.

There are separate bits to control the TX

part, the frequency synthesiser and the

crystal oscillator. This individual control

can be used to optimise for lowest

possible current consumption in a certain

application.

typical

power-on

and

initialising

sequence

for

minimum

power

consumption is shown in Figure 13 and

Figure 14.

PALE should be tri-stated or set to a high

level during power down mode in order to

prevent a trickle current from flowing in the

internal pull-up resistor.

PA_POW should be set to 00h during

power down mode to ensure lowest

possible

leakage

current.

Not Recommended for New Designs

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