Datasheet

Electrical characteristics STM32WLE5J8/JB/JC
62/135 DS13105 Rev 4
5.3.3 Sub-GHz radio characteristics
Electrical characteristics of the sub-GHz radio are given with the following conditions unless
otherwise specified:
• V
DD
= 3.3 V. The current consumption is measured as described in Figure 12.
I
DD
includes current consumption of all supplies (V
DDRF
, V
DDSMPS
, V
DD
, V
DDA
, V
BAT
).
All peripherals except Sub-GHz radio are disabled and the system is in Standby mode.
• Temperature = 25 °C
• HSE32 = 32 MHz
• F
RF
= 434/868/915 MHz
• All RF impedances matched using reference design
• Reference design implementing a 32 MHz crystal oscillator
• Transmit mode output power defined in 50  load
• FSK BER (bit error rate) = 0.1 %, 2-level FSK modulation without pre-filtering,
BR = 4.8 Kbit/s, FDA = 5 kHz, BW_F = 20 kHz
• LoRa PER (packet error rate) = 1 %, packet of 64 bytes, preamble of 8 bytes, error
correction code CR = 4/5, CRC on payload enabled, no reduced encoding, no implicit
header
• Sensitivities given using highest LNA gain step
• Power consumption measured with -140 dBm signal and AGC ON
• Blocking immunity, ACR and co-channel rejection, given for a single tone interferer and
referenced to sensitivity +6 dB, blocking tests performed with unmodulated signal
• Bandwidth expressed on DSB (double-sided band)
P
D
Power dissipation at
T
A
= 85 °C for suffix 6
version
(4)
UFBGA73 - 392.0 mW
T
A
Ambient temperature for
suffix 6 version
Maximum power
dissipation
–40
85
°C
Low-power dissipation
(5)
105
T
J
Junction temperature range Suffix 6 version –40 105 °C
1. When the reset is released, the functionality is guaranteed down to V
BOR0
min.
2. This formula has to be applied only on the power supplies related to the I/O structure described in Table 19:
STM32WLE5J8/JB/JC pin definition. Maximum I/O input voltage is the smallest value between min (V
DD
, V
DDA
) + 3.6 V
and 5.5 V.
3. For operation with voltage higher than min (V
DD
, V
DDA
) + 0.3 V, the internal pull-up and pull-down resistors must be
disabled.
4. If T
A
is lower, higher P
D
values are allowed as long as T
J
does not exceed T
J
max (see Table 92: Package thermal
characteristics).
5. In low-power dissipation state, T
A
can be extended to this range, as long as T
J
does not exceed T
J
max (see Table 92:
Package thermal characteristics).
Table 25. General operating conditions (continued)
Symbol Parameter Conditions Min Max Unit