STM32W108CB datasheet(172/179 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32W108CB, STM32W108HB

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Doc ID 16252 Rev 2

12.8.2

Transmit

Table 44 lists the key parameters of the integrated IEEE 802.15.4 transmitter on the

STM32W.

Note:

Transmit measurements were collected with ST’s STM32W Ceramic Balun Reference

Design (Version A0) at 2440 MHz. The Typical number indicates one standard deviation

above the mean, measured at room temperature (25

°C). The Min and Max numbers were

measured over process corners at room temperature

12.8.3

Synthesizer

Table 45 lists the key parameters of the integrated synthesizer on the STM32W.

Table 44.

Transmit characteristics

Parameter

Conditions

Min.

Typ.

Max.

Unit

Maximum output power (boost

mode)

At highest power setting

dBm

Maximum output power

At highest power setting

dBm

Minimum output power

At lowest power setting

-32

dBm

Error vector magnitude

As defined by IEEE 802.15.4,

which sets a 35% maximum

515

Carrier frequency error

-40

+40

ppm

Load impedance for optimum

transmit power

200+j90

TBC

PSD mask relative

3.5 MHz away

-20

PSD mask absolute

3.5 MHz away

-30

dBm

Table 45.

Synthesizer characteristics

Parameter

Conditions

Min.

Typ.

Max.

Unit

Frequency range

2400

2500

MHz

Frequency resolution

11.7

kHz

Lock time

From off, with correct VCO DAC

setting

100

µs

Relock time

Channel change or RX/TX

turnaround (IEEE 802.15.4

defines 192 µs turnaround

time)

100

µs

Phase noise at 100 kHz offset

-71

dBc/Hz

Phase noise at 1 MHz offset

-91

dBc/Hz

Phase noise at 4 MHz offset

-103

dBc/Hz

Phase noise at 10 MHz offset

-111

dBc/Hz

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