[原创] NXP NXH3670超低功耗2．4 GHz BLE收发器音频流解决方案

NXP公司的NXH3670UK是用于音频流的低等待超低功耗2.4 GHz BLE收发器,高度集成了2.4GHz无线收发器和嵌入MCU,目标用在可听无线手持设备和耳机的无线音频流.NXH3670UK集成了以下的主要功能:2.4GHz收发器和支持速率高达2Mbps的数字调制解调器,支持速率1Mbps和2Mbps的BLE GFSK调制,低功耗16 MHz/32 MHz晶体振荡器和片上振荡器,支持低层协议层的RF MAC,ARM Cortex-M0子系统用来系统控制和更高的协议层, AES-128安全协处理器,音频接口和音频处理加速度,用于音频处理的CoolFlux DSP,有多个用户接口用来控制,数据,调试和测试.收发器的载频为2.36 GHz到 2.5 GHz, BLE 1 Mbps和2 Mbps PHY模式,可编TX输出功率从-10dBm到4dBm,每步2dB,BLE 2Mbps调制模式的接收灵敏度为-90dBm,BLE 1Mbps调制模式的接收灵敏度为-94dBm,频率失调修正高达±300 kHz, RSSI测量具有±3 dB精度,ARM Cortex-M0低功耗模式工作频率高达16 MHz ,高性能模式为84MHz,工作温度-20℃到+85℃.本文介绍了NXH3670主要特性和优势,框图, 手持设备应用框图,加密狗应用框图和评估板NXH3670ADK主要特性,框图,电路图,材料清单和PCB设计图.

The NXH3670UK constitutes a highly integrated, single chip ultra-low power 2.4 GHzwireless transceiver with embedded MCU, targeted at wireless audio streaming forhearables, wireless headsets and headphones.

The NXH3670UK chip integrates the following key functionalities – among others:
•A 2.4 GHz RF transceiver and digital modem supporting up to 2 Mbits/s
•Supporting BLE GFSK modulation 1 Mbps and 2 Mbps
•A low-power 16 MHz/32 MHz crystal oscillator and on-chip oscillators
•An RF MAC for supporting the lower protocol layers..

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