IC RF TxRx + MCU 802.15.4, Bluetooth Bluetooth v5.0, Thread, Zigbee® 2.4GHz 48-VFQFN Exposed Pad The NRF52840-QFAA-F-R belongs to Nordic’s nRF52 series and supports multiple wireless standards including Bluetooth 5, Bluetooth Low Energy (BLE), Thread, Zigbee, ANT, and proprietary 2.4 GHz protocols. It features a 64 MHz ARM Cortex-M4F CPU with floating-point unit (FPU), making it suitable for both wireless communication and real-time embedded processing. The device integrates large memory resources, rich peripherals, USB support, NFC capability, and advanced security features, reducing the need for external components in wireless embedded designs. Key Features 32-bit ARM Cortex-M4F processor running at 64 MHz 1 MB Flash memory and 256 KB RAM Supports Bluetooth 5 / BLE, Thread, Zigbee, ANT, and proprietary 2.4 GHz protocols IEEE 802.15.4 compliant radio Up to +8 dBm TX output power High receiver sensitivity down to −103 dBm Data rates up to 2 Mbps Ultra-low power consumption for battery-powered applications USB 2.0 Full-Speed controller NFC-A tag support Multiple communication interfaces: SPI UART I2C (TWI) I2S PWM PDM ADC Up to 48 GPIOs Integrated ARM CryptoCell-310 security engine Operating voltage range: 1.7 V to 5.5 V Operating temperature: −40°C to +85°C Compact 48-QFN (6×6 mm) package Typical Applications BLE devices Smart home products Wearables Wireless sensors Industrial IoT HID devices (keyboard/mouse) Asset tracking Mesh networking devices USB dongles and gateways PCB Design Notes Community PCB reviews commonly recommend: Proper RF grounding and 50-ohm antenna routing Using ESD/TVS protection on USB lines Keeping RF matching components close to the antenna Using solid ground planes for 2.4 GHz performance #CommonPartsLibrary #IntegratedCircuit #RF

Seeed Studio XIAO nRF52840 Sense is carrying Bluetooth 5.0 wireless capability and is able to operate with low power consumption. Featuring onboard IMU and PDM, it can be your best tool for embedded Machine Learning projects.

TDK T5838 digital PDM MEMS microphone, low-profile surface-mount microphone with pulse density modulation (PDM) output, operating from 1.65V to 1.98V supply, configurable performance modes including High Quality, Low Power and Ultrasonic operation, signal-to-noise ratio (SNR) up to 68dB, acoustic overload point (AOP) up to 133dBSPL, clock frequency range from 400kHz to 4.8MHz, wake-on-sound support, left/right channel selection, compact package optimized for portable audio, voice recognition, smart devices, IoT products and battery-powered applications. Search Keywords: TDK T5838, T5838 MEMS microphone, T5838 PDM microphone, digital MEMS microphone, PDM output microphone, low power MEMS microphone, ultrasonic MEMS microphone, TDK InvenSense microphone, wake on sound microphone, digital microphone 1.8V, MEMS audio sensor, voice recognition microphone, IoT microphone, T5838 datasheet Hashtags: #T5838 #TDKT5838 #TDK #MEMSMicrophone #DigitalMicrophone #PDMMicrophone #AudioSensor #VoiceRecognition #WakeOnSound #LowPowerMicrophone #UltrasonicMicrophone #IoTAudio #SmartDeviceAudio #MEMSAudio #EmbeddedAudio

802.15.4, Bluetooth Bluetooth v5.1 Transceiver Module 2.4GHz Integrated, Chip Surface Mount Bluetooth® 5.1 Low Energy module for standalone wireless communication, integrating an Arm® Cortex®-M4F MCU with 512 kB Flash and 128 kB RAM for embedded applications. It operates from a 1.7 V to 3.6 V supply, supports Bluetooth LE at 2.4 GHz with data rates up to 2 Mbps, and provides UART, USB, SPI, I²C (TWI), I²S, GPIO, ADC, PWM, PDM, and QDEC interfaces in a compact 6.5 × 6.5 × 1.2 mm surface-mount System-in-Package (SiP). #BluetoothModule #Bluetooth5_1 #BluetoothLowEnergy #OpenCPU #2_4GHz #UART #SPI #I2C #USB

Seeed Studio XIAO nRF52840 Sense is carrying Bluetooth 5.0 wireless capability and is able to operate with low power consumption. Featuring onboard IMU and PDM, it can be your best tool for embedded Machine Learning projects. It has also the debug pins exposed

50 Hz ~ 20 kHz Digital, PDM Microphone MEMS (Silicon) Omnidirectional (-26dB ±1dB @ 94dB SPL) Solder Pads #commonpartslibrary #audio #microphone

IC RF TXRX+MCU BLE 48QFN 64 MHz Cortex-M4 with FPU 512/64 KB Flash 2.4 GHz Transceiver 2 Mbps, 1 Mbps Bluetooth Low Energy Bluetooth mesh +4 dBm TX power 128-bit AES UART, SPI, TWI, PDM, I2S PWM 12-bit ADC NFC-A #microcontrollers #Nordic #commonpartslibrary

100 Hz ~ 10 kHz Digital, PDM Microphone MEMS (Silicon) Omnidirectional (-26dB ±3dB @ 94dB SPL) Solder Pads

45 Hz ~ 20 kHz Digital, PDM Microphone MEMS (Silicon) 1.62 V ~ 3.63 V Omnidirectional (-46dB ±2dB @ 94dB SPL) Solder Pads #CommonPartsLibrary #Audio #MEMS #Microphone