📄 8位串行模数转换器tlc548、tlc549的应用.htm
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<TD width="66%"><STRONG>8位串行模数转换器TLC548、TLC549的应用</STRONG></TD>
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<TD class=Article_tdbgall
colSpan=2>作者：安源 文章来源：www.ic24h.com 点击数：92 更新时间：2004-4-2 <A
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<P><STRONG>1. 概述 </STRONG></P>
<P align=justify> TLC548，TLC549是美国德州仪器公司生产的8位串行A/D转换器芯片，可与通用微处理器、控制器通过I/O
CLOCK、CS、DATA
OUT三条口线进行串行接口。具有4MHz片内系统时钟和软、硬件控制电路，转换时间最长17μs，TLC548允许的最高转换速率为45
500次/s，TLC549为40
000次/s。总失调误差最大为±0.5LSB，典型功耗值为6mW。采用差分参考电压高阻输入，抗干扰，可按比例量程校准转换范围，V<SUB>REF-</SUB>接地，V<SUB>REF+</SUB>－V<SUB>REF-</SUB>≥1V，可用于较小信号的采样。</P>
<P align=center><A title=点击图片看全图
href="8位串行模数转换器TLC548、TLC549的应用.files/20044289461.jpg" target=_blank><IMG
alt="" src="8位串行模数转换器TLC548、TLC549的应用.files/20044289461.jpg"
onload="javascript:if(this.width>screen.width-333)this.width=screen.width-333"
border=0></A><BR></P>
<P align=justify><B>2. 芯片简介</B></P>
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