Wireless USB transceiver aims for 3-year battery life

May 15, 2014 // By Graham Prophet
Cypress Semiconductor says that its ultra-low-power 2.4-GHz WirelessUSB NX transceiver enables three-year battery life for wireless human interface devices, while supporting data rates of up to 2 Mbps, and allowing integration with Cypress’s touch sensing technology.

The fourth-generation 2.4-GHz WirelessUSB radio-on-a-chip enables three years of battery life for wireless mice, keyboards, trackpads, remote controls and other Human Interface Devices (HIDs). End users demand long battery life for wireless HIDs, making a low power consumption radio a must. WirelessUSB NX operates at 900 nA in sleep mode where HIDs spend most of their time, and it offers active current of 12 mA in transmit mode and 15 mA in receive mode. As with other Cypress WirelessUSB families, the NX radio offers superior performance in the presence of common 2.4-GHz interference from sources such as WiFi, Bluetooth, cordless phones and microwaves. WirelessUSB NX is complemented by Cypress’s highly integrated enCoRe VI microcontroller, PSoC 4 system-on-chip devices and complete trackpad modules for touch interfaces, offering manufacturers a single source of supply and support.

WirelessUSB NX offers compatibility with common RF devices that are currently designed into wireless HIDs. Compatibility with these solutions enables customers to reuse existing firmware to reduce development time.

The Received Signal Strength Indicator feature on WirelessUSB NX supports a 5-bit reading for signal strength and a 4-bit reading for noise strength. This provides more accuracy and finer control for wireless systems.

Cypress; www.cypress.com