NXP OL2385全集成单片RF收发器解决方案

NXP公司的OL2385是用于工业环境的全集成单片RF收发器,包括稳定的晶振,分数N锁相环(PLL),低噪音放大器(LNA),用于自动增益控制(AGC)的衰减器,I/Q下混合器和两个高分辨率10位ADC.工作频率160 MHz - 960 MHz,工作速率高达400 kbit/s 4FSK,主要用在智能计量,家庭和建筑物安全和自动化(KNX-RF),遥控,无线医疗,无线传感器网络,工业监视和控制以及低功耗宽域网(SigFox).本文介绍了OL2385主要特性和优势,框图以及OM2385/FS001开发板主要特性,框图,参考设计板和屏蔽板电路图.
The device incorporates several commonly used building blocks including a crystalstabilized oscillator, a fractional-N based Phase Locked Loop (PLL) for accuratefrequency selection in both TX and RX, Low Noise Amplifier (LNA), attenuator forAutomatic Gain Control (AGC), I/Q down-mixer and two high resolution Analog to Digital
Converters (ADC).The conversion into the digital domain is done in an early phase,enabling a software defined radio like approach.By transforming signals in the digital domain in an early phase, one highly configurable RX channel is available including channel mixer, channel filter, ASK/FSK demodulator,clock-data recovery, bit processor and a micro-controller memory interface (DMA)allowing the micro-controller to complete the data handling and handshaking.
The device has an embedded RISC micro-controller optimized for high performance and low power as well as an EROM for customer applications. The device also includes a medium power UHF transmit system with a high dynamic range of -35dBm to +14dBm which makes it ideal for the use in narrow band communication systems. The TX system allows transmission with data rates up to 400 kbit/s NRZ.Power ramping and splatter avoidance filters are included to ensure that the transmit spectrum fulfills all the common standards in Europe, USA and Asia. The phase noise of the transmitter supports ARIB operation.
The device includes a series of timers to allow for autonomous polling and wake-up applications. The TX and RX data buffers are located in the RAM with autonomous...