STM32WB55CC datasheet(76/165 Pages) STMICROELECTRONICS

76 / 165 page

Electrical characteristics

STM32WB55xx

76/165

DS11929 Rev 3

Table 24. RF transmitter BLE characteristics (1 Mbps)(1)

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

Prf

Maximum output power

SMPS Bypass (or ON

(VFBSMPS = 1.7 V) and

VDD > 1.95 V)

-6.0

dBm

SMPS Bypass (or ON

(VFBSMPS = 1.4 V) and

VDD > 1.71 V), Code 29

-3.7

0 dBm output power

Minimum output power

-20

Pband

Output power variation over the band Tx = 0 dBm - Typical

-0.5

0.4

BW20dB

20 dB signal bandwidth

670

KHz

IBSE

In band spurious emission

2 MHz

Bluetooth® Low Energy:-20 dBm

-58

dBm

≥ 3 MHz

Bluetooth® Low Energy: -30 dBm

-61

Frequency drift

Bluetooth® Low Energy: ±50 kHz

-12

KHz

maxdr

Maximum drift rate

Bluetooth® Low Energy:

±20 KHz / 50 µs

-2-

KHz/

50 µs

Frequency offset

Bluetooth® Low Energy:

±150 kHz

-8-

KHz

∆f1

Frequency deviation average

Bluetooth® Low Energy:

between 225 and 275 kHz

-246

∆f2

99.9%

Frequency deviation

Bluetooth® Low Energy:> 185 kHz

203

∆fa

Frequency deviation

∆f2 (average) / ∆f1 (average)

Bluetooth® Low Energy:> 0.80

0.90

OBSE(2)

Out of band

spurious emission

< 1 GHz

-61

dBm

≥ 1 GHz

-46

1. :Measured in conducted mode, based on reference design (see AN5165), using output power specific external RF filter and

impedance matching networks to interface with a 50 Ω antenna.

2. Suitable for systems targeting compliance with worldwide radio-frequency regulations ETSI EN 300 328 and EN 300 440

Class 2 (Europe), FCC CFR47 Part 15 (US), and ARIB STD-T66 (Japan).

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