NRF51822-QFAA-R7

RF Transceiver ICS Overview

The NRF51822-QFAA-R7 is a Bluetooth Low Energy System on Chip (SoC) from Nordic Semiconductor, built around a 32-bit ARM Cortex-M0 core. It integrates a flexible 2.4 GHz radio supporting BLE and proprietary protocols like Gazell. The device features 256 kB of flash memory and 32 kB of RAM. Key electrical parameters include a maximum data rate of 2 Mbps, an output power of 4 dBm, and a receiver sensitivity of -85 dBm. It operates within a voltage range of 1.8 V to 3.6 V, with receive current at 9.7 mA and transmit current at 10.5 mA. The unit is housed in a 48-pin QFN EP package.

RF Transceiver ICS Feature Summary

• Integrates a 32-bit ARM Cortex-M0 CPU with substantial non-volatile memory for complex application logic.
• Supports multiple wireless modes including Bluetooth Low Energy and proprietary 2.4 GHz protocols for flexible connectivity.
• Includes Programmable Peripheral Interconnect (PPI) allowing peripherals to interact directly without CPU intervention.
• Features flexible GPIOs that can be mapped to digital interfaces such as SPI, TWI, and UART.

RF Transceiver ICS Applications

• Bluetooth Smart wearable devices
• Low-power sensor networks
• Proprietary 2.4 GHz remote control systems
• Beacon and proximity detection hardware

RF Transceiver ICS Procurement Notes

Verify the specific suffix 'QFAA' against the manufacturer's latest datasheet to confirm pinout and package dimensions. Ensure the 'R7' tape-and-reel specification matches your automated assembly requirements. Cross-reference the RoHS status with current environmental compliance regulations before finalizing procurement orders.

RF Transceiver ICS Selection Notes

Select this component when a balance of moderate processing power and ultra-low power consumption is required for BLE applications. It is suitable for designs needing 256 kB of program storage. Consider alternative nRF51 series variants if different memory sizes or package footprints are necessary for the specific PCB layout constraints.

RF Transceiver ICS Part Context

This part belongs to the nRF51x22 family of ultra-low power SoCs designed primarily for Bluetooth Low Energy applications. The nRF51822 variant specifically offers higher memory capacity compared to the nRF51422. It serves as a foundational chip for IoT devices requiring reliable short-range wireless communication with minimal energy usage.

RF Transceiver ICS Replacement Considerations

Public confirmed substitute part numbers: NRF51822-QFAB-R7, NRF51822-QFAC-R7.