The Ensigma Whisper family of Radio Programmable Units (RPUs) includes highly flexible connectivity IP processors designed for low-power wireless standards such as Wi-Fi, Bluetooth and IEEE 802.15.4.
Specifically designed to meet the communications requirements for IoT (Internet of Things), M2M (Machine-To-Machine) and wearable devices, Ensigma Whisper RPUs implement all of the connectivity protocols needed for embedding low-power connectivity inside SoCs.


Ensigma Whisper RPUs are optimized to provide the smallest possible area, featuring minimal external components and additional radio blocks.


Ensigma Whisper RPU


Wi-Fi speeds at Bluetooth power

Ensigma Whisper RPUs implement a patented PowerGearing low power consumption technique that includes advanced design techniques and process technology features, enabling the lowest active and idle power. Whisper RPUs extend overall system battery life while maintaining consistent connectivity and providing a rich set of features.

Whisper RPUs are available in a wide range of performance capabilities, from single-standard to multi-standard implementations. In addition, all Whisper RPUs include an integrated MIPS processor that can be scaled as required to enable support for an integrated host stack, removing the need for a separate host processor and thereby reducing both solution size and cost

Ensigma Whisper Features

  • Low Power
  • Integrated MIPs processor
  • Scalable architecture allows single or multi-standard implementations
  • Industry-leading performance
  • Small die area




  • Complete low power solution
  • Scalable MIPS processor enables integrated stack, removing the need for a separate host processor
  • Easy integration into an SoC


Communications Standards Support

BluetoothBluetooth Smart (Bluetooth Low Energy) v4.2/5.0
Wi-FiIEEE 802.11b
IEEE 802.11g
IEEE 802.11n
IEEE 802.11ah*
IEEE 802.15.46LoWPAN

* When available


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