Top view (pads down)
OUT GND3
GND4 GND2
IN GND1
Features
• Integrated impedance matching to STM32WB55Cx/Rx, STM32WB50Cx,
STM32WB35Cx and STM32WB30Cx
• LGA footprint compatible
• 50 Ω nominal impedance on antenna side
• Deep rejection harmonics filter
• Low insertion loss
• Small footprint
• Low thickness ≤ 450 μm
• High RF performance
• RF BOM and area reduction
• ECOPACK2 compliant
Applications
• Bluetooth 5
• OpenThread
• Zigbee®
• IEEE 802.15.4
• Optimized for STM32WB55Cx/Rx, STM32WB50Cx, STM32WB35Cx and
STM32WB30Cx
Description
The MLPF-WB55-01E3 integrates an impedance matching network and harmonics
filter. The matching impedance network has been tailored to maximize the RF
performance of STM32WB. This device uses STMicroelectronics IPD technology on
non-conductive glass substrate which optimizes RF performance.
Product status link
MLPF-WB55-01E3
2.4 GHz low pass filter matched to STM32WB55Cx/Rx, STM32WB50Cx,
STM32WB35Cx and STM32WB30Cx
MLPF-WB55-01E3
Datasheet
DS12804 - Rev 2 - September 2020
For further information contact your local STMicroelectronics sales office.
www.st.com
1 Characteristics
Table 1. Absolute ratings (T
amb
= 25 °C)
Symbol Parameter Value Unit
P
IN
Input power RF
IN
10 dBm
V
ESD
ESD ratings human body model (JESD22-A114-C), all I/O one at a
time while others connected to GND
2000
V
ESD ratings machine model, all I/O 200
T
OP
Maximum operating temperature -40 to +105 °C
Table 2. Impedances(T
amb
= 25 °C)
Symbol
Parameter
Value
Unit
Min. Typ. Max.
Z
IN
STM32WB55xx single-ended
impedance
-
matched to
STM32WB55Cx/Rx,
STM32WB50Cx,
STM32WB35Cx,
and
STM32WB30Cx
-
Ω
Z
OUT
Antenna impedance - 50 - Ω
Table 3. Electrical characteristics and RF performance (T
amb
= 25 °C)
Symbol
Parameter
Value
Unit
Min. Typ. Max.
f Frequency range
2400 2500
MHz
IL
Insertion loss lS
21
l
0.90 1.1 dB
RL
IN
Input return loss IS
11
I
14 22 dB
RL
OUT
Output return loss lS
22
l
16 24 dB
Att
Harmonic
rejection levels
IS
21
I
Attenuation at 2fo 38 40 dB
Attenuation at 3fo 43 45 dB
Attenuation at 4fo 41 46 dB
Attenuation at 5fo 35 42 dB
MLPF-WB55-01E3
Characteristics
DS12804 - Rev 2
page 2/13