UM2101 datasheet(21/33 Pages) STMICROELECTRONICS

21 / 33 page

UM2101

Sensors and Bluetooth low energy connectivity

DocID029635 Rev 1

21/33

acoustic waves, is manufactured using a specialized silicon micromachining process

dedicated to produce audio sensors. The IC interface is manufactured using a CMOS

process that allows designing a dedicated circuit able to provide a digital signal externally

in PDM format.

The MP34DT04 has an acoustic overload point of 120 dBSPL with a 64 dB signal-to-noise

ratio and

–26 dBFS sensitivity.

6.5

BLUENRG-MS

The BLUENRG-MS is a very low power Bluetooth Low Energy (BLE) single-mode network

processor, compliant with Bluetooth specification v4.2. The BLUENRG-MS can act as

master or slave. The entire Bluetooth low energy stack runs on the embedded ARM Cortex

M0 core. The non-volatile Flash memory allows on-field stack upgrading.

The BLUENRG-MS allows applications to meet the tight advisable peak current

requirements imposed with the use of standard coin cell batteries. The maximum peak

current is only 8.2 mA at 0 dBm of output power. Ultra low-power sleep modes and very

short transition times between operating modes allow very low average current

consumption, resulting in longer battery life. The BLUENRG-MS offers the option of

interfacing with external microcontrollers using SPI transport layer.

6.6

BALF-NRG-01D3

BALF-NRG-01D3 is a 50

Ω conjugate match to BLUENRG-MS (QFN32 package) that

integrates balun transformer and harmonics filtering. It features high RF performances with

a very small footprint and a RF BOM reduction. It has been chosen as the best trade-off for

costs, area occupation and high radio performances. The layout has been optimized to suit

a 4-layer design and a chip antenna.

UM2101 Datasheet(PDF) 21 Page - STMicroelectronics