Electronics & Test:
nRF51822 Bluetooth low energy and 2.4GHz proprietary SoC
The nRF51822 is a multiprotocol Bluetooth low energy(BLE)/2.4GHz proprietary RF SoC. Its architecture includes low power radio and 32-bit ARM Cortex-M0 processor. Sensitivity is -92.5dB RX in BLE mode, link budget is improved by 9.5dBm, and the device exhibits sub-10mA peak- and microamp average-currents from a 3V coin cell.
The chip is the only ULP 2.4GHz SoC that can support concurrent and non-concurrent BLE (Bluetooth v4.0) and 2.4GHz proprietary operation. Legacy 2.4GHz proprietary- (e.g. wireless desktops) and BLE-applications can be supported with no additional development -- something that’s impossible with any other 2.4GHz ULP RF technology. The key differentiation is that the nRF51822 separates application code and RF protocol stack. In competitive products, these software blocks have an associated inherent coupling; but in the case of the nRF51822, there are no dependencies between the silicon vendor-delivered stack and the application. In practice, the nRF51822 has two autonomous functional blocks: the developer’s application and the self-contained BLE "soft device" stack.