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2.4 GHz RF transceiver for ZigBee/IEEE 802.15.4 and low-power wireless applications

26th February 2008
ES Admin

Texas Instruments has introduced the company’s second-generation ZigBee/IEEE 802.15.4 radio-frequency (RF) transceiver designed for the 2.4 GHz unlicensed ISM (industrial, scientific, medical) frequency band. Featuring state-of-the-art selectivity/co-existence and excellent link budget, the CC2520 targets a wide variety of ZigBee/IEEE 802.15.4 and proprietary wireless systems used in industrial monitoring and control, home and building automation, set-top boxes, remote controls and wireless sensor networks.

In a typical system, the CC2520 will be used together with a microcontroller, such as TI’s MSP430 ultra-low power MCUs, and a few additional passive components. The CC2520 reduces the load on the host controller by providing extensive hardware support for packet handling, data buffering, burst transmissions, data encryption, data authentication, clear channel assessment, link quality indication and packet timing information. The MSP430 MCU series is ideal for ZigBee-based applications due to its highly integrated peripherals like dynamic memory access (DMA) and digital-to-analog (DAC) and analog-to-digital converters (ADC) that provide high performance yet consume very little power.

Key CC2520 specifications include 1.8 V to 3.8 V supply range, -40°C to +125°C temperature range, 103 dB link budget (400 m line-of-sight range with the development kit), 50 dB adjacent channel rejection. The CC2520 provides an easy upgrade path for the CC2420 RF transceiver.

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