Cypress Semiconductor has introduced its
next-generation 2.4-GHz WirelessUSB Radio-on-a-Chip. Designated
WirelessUSB NL it delivers robust performance along with low power
consumption for wireless keyboards, mice, remote controls and other
Human Interface Devices (HIDs). The devices are offered in 4 x 4 mm QFN
packages, in bare die, and in wafer form.
WirelessUSB NL boasts -87 dBm receive sensitivity at 1 Mbps.
This enhanced sensitivity enables longer range operation and allows for
lower-power transmit signals. The device features low active and
standby current (less than 1 µA), enabling battery life to be more than a
year for normal mouse usage. WirelessUSB NL also has a closed-loop
internal architecture that minimizes signal frequency drift for robust
radio performance. This robustness minimizes retries during transmission
enabling lower power consumption and allows for long payload lengths of
up to 255 bytes.
As with other Cypress WirelessUSB families, the NL device offers
superior performance in the presence of common 2.4-GHz interference from
sources such as WiFi, Bluetooth, cordless phones and microwaves. The
device is highly integrated, requiring less than 12 non-critical
supporting components to make a complete mouse. This integration reduces
board space, BOM cost and manufacturing cost, while improving overall
WirelessUSB NL is complemented by the company's enCoRe II/V
low-voltage, highly integrated microcontrollers, offering manufacturers a
single source of supply and support. WirelessUSB NL also supports the
company's Agile HID(tm) protocol that allows existing WirelessUSB
customers to get started quickly on their designs without any additional
effort. Reference designs to speed time-to-market are available from
Cypress for these solutions.
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