基于TDA5051A设计的家庭自动化调制解调技术

本文介绍了TDA5051A主要特性和优势，方框图，多种应用电路和测量电路。TDA5051A是NXP 公司的家庭自动化调制解调器，单电源5V工作，数据速率600波特或1200波特，特别适用于ASK发送。TDA5051A具有全数字载波发生和整形，输出功率级具有过载保护，接收输入有自动增益控制（AGC），8位ADC和窄带数字滤波，容易和EN50065-1兼容网络兼容，主要用在家用电器控制，能量/热量控制，采用家庭电力网络的ASK数据发送。

TDA5051A：Home automation modem

The TDA5051A is a modem IC, specifically dedicated to ASK transmission by means of the home power supply network, at 600 baud or 1200 baud data rate. It operates from a single 5 V supply.

TDA5051A 主要特性和优势：

Full digital carrier generation and shaping

Modulation/demodulation frequency set by clock adjustment, from microcontroller or

on-chip oscillator

High clock rate of 6-bit D/A (Digital to Analog) converter for rejection of aliasing

components

Fully integrated output power stage with overload protection

Automatic Gain Control (AGC) at receiver input

8-bit A/D (Analog to Digital) converter and narrow digital filtering

Digital demodulation delivering baseband data

Easy compliance with EN50065-1 with simple coupling network

Few external components for low cost applications

SO16 plastic package

TDA5051A应用：

Home appliance control (air conditioning, shutters, lighting, alarms and so on)

Energy/heating control

Amplitude Shift Keying (ASK) data transmission using the home power network

图1。TDA5051A方框图

图2。TDA5051A片上时钟电路典型配置图

图3。动力线不绝缘TDA5051A应用框图

图4。动力线绝缘TDA5051A应用框图

图5。动力线不绝缘TDA5051A应用框图，提升了灵敏度（典型值68dBuV）

图6。动力线绝缘TDA5051A应用框图，提升了灵敏度（典型值68dBuV）

图7。测量THD和TX OUT信号带宽的电路图

图8。测量误码率（BER）的电路图