BLUENRG-345AC

RF Transceiver ICS Overview

The BLUENRG-345AC is an ultra-low power programmable Bluetooth Low Energy 5.2 System-on-Chip from STMicroelectronics, operating within a voltage range of 1.7V to 3.6V and a temperature range of -40°C to 85°C. It features a 2.4GHz radio with RX sensitivity of -97dBm at 1Mbps and up to +8dBm output power. The device integrates 256kB Flash and 32kB RAM, supporting data rates up to 2Mbps via GFSK modulation. Packaged in a 32-VFQFN (5x5mm) exposed pad, it supports I2C/SPI interfaces and includes integrated balun functionality for efficient wireless connectivity.

RF Transceiver ICS Feature Summary

• Supports Bluetooth Low Energy 5.2 specifications including long range coded PHY and advertising extensions
• Integrates a DMA-based coprocessor for timing-critical BLE operations and proprietary radio drivers
• Provides ultra-low power performance with shutdown mode current as low as 10nA
• Includes integrated passive device companion chip support for optimized RF matching

RF Transceiver ICS Applications

• Wearable health and fitness devices requiring extended battery life
• Industrial sensor networks utilizing LE Ping and GATT caching
• Smart home actuators and remote control systems
• Asset tracking tags using periodic advertising sync transfer

RF Transceiver ICS Procurement Notes

Verify the specific ordering suffix to confirm package type and tape/reel configuration, as variations exist within the BlueNRG-LP family. Ensure compliance with RoHS3 standards and check ECCN classification for export requirements. Confirm that the selected variant matches the required industrial temperature grade and voltage specifications for the target application environment before finalizing procurement orders.

RF Transceiver ICS Selection Notes

Select this component when designing systems requiring programmable BLE 5.2 capabilities with minimal power consumption. The integrated balun reduces external component count compared to solutions requiring discrete matching networks. Consider the 32-VFQFN package constraints for PCB layout and thermal management. Evaluate the need for external PA support if link budget requirements exceed the internal +8dBm output capability.

RF Transceiver ICS Part Context

The BLUENRG-345AC belongs to the BlueNRG-LP series, designed for ultra-low power IoT applications. It combines STMicroelectronics' advanced 2.4GHz RF IP with a microcontroller core, enabling standalone operation or use as a network processor. This SoC approach simplifies design by integrating memory, radio, and baseband processing into a single compact package suitable for space-constrained portable devices.

RF Transceiver ICS Replacement Considerations

Public confirmed substitute part numbers include BLUENRG-345AT, BLUENRG-345MC, and BLUENRG-345MT. Verify pin compatibility and firmware migration paths when transitioning between these variants within the same product line.