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LA7680各引脚功能及管脚电压

2008-10-8 17:23

<p><font face="Verdana">LA7680各引脚功能及管脚电压 </font><br/></p>
<p>
<table style="WIDTH: 562pt; BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="749" border="0" x:str>
<colgroup>
<col style="WIDTH: 54pt" width="72">
<col style="WIDTH: 54pt" span="2" width="72">
<col style="WIDTH: 91pt; mso-width-source: userset; mso-width-alt: 3872" width="121">
<col style="WIDTH: 35pt; mso-width-source: userset; mso-width-alt: 1504" width="47">
<col style="WIDTH: 54pt" width="72">
<col style="WIDTH: 54pt" span="2" width="72">
<col style="WIDTH: 112pt; mso-width-source: userset; mso-width-alt: 4768" width="149">
<tbody>
<tr style="HEIGHT: 18.75pt" height="25">
<td class="xl29" style="WIDTH: 562pt; HEIGHT: 18.75pt" width="749" colspan="9" height="25"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><font class="font7">—</font><font class="font5"> </font><font class="font7">—测试机型:</font><font class="font5">B2116</font></td></tr>
<tr style="HEIGHT: 14.25pt" height="19">
<td style="HEIGHT: 14.25pt" height="19">脚号</td>
<td>静态电压</td>
<td>动态电压</td>
<td class="xl24">功能说明</td>
<td></td>
<td>脚号</td>
<td class="xl26">静态电压</td>
<td class="xl26">动态电压</td>
<td class="xl24">功能说明</td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>1</td>
<td class="xl26">4.3</td>
<td class="xl26">3.6</td>
<td class="xl24" style="mso-ignore: colspan" colspan="2">调频(<font class="font9">FM</font><font class="font8">)解调器输出端</font></td>
<td align="right" x:num>25</td>
<td class="xl26">7.6</td>
<td class="xl26">7.7</td>
<td class="xl24">行偏转电路电源电压输出端</td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>2</td>
<td class="xl26">5.7</td>
<td class="xl26">6.0</td>
<td class="xl24" style="mso-ignore: colspan" colspan="2">调频解调器鉴频器外接端和静音控制端</td>
<td align="right" x:num>26</td>
<td class="xl26">0.4</td>
<td class="xl26">0.6</td>
<td class="xl24">多功能脚它是行逆程脉冲输端色同步选通脉冲输出及<font class="font9">VCR</font><font class="font8">开关端</font></td></tr>
<tr style="HEIGHT: 14.25pt" height="19">
<td style="HEIGHT: 14.25pt" align="right" height="19" x:num>3</td>
<td class="xl26">4.4</td>
<td class="xl26">4.6</td>
<td class="xl24" style="mso-ignore: colspan" colspan="2">音频前置放大器负反馈输入端</td>
<td align="right" x:num>27</td>
<td class="xl26">0.7</td>
<td class="xl26">0.8</td>
<td class="xl24">行激励信号输出端</td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>4</td>
<td class="xl26">5.6</td>
<td class="xl26">5.8</td>
<td class="xl24">音频信号输入端</td>
<td class="xl25"></td>
<td align="right" x:num>28</td>
<td class="xl26">5.1</td>
<td class="xl26">5.2</td>
<td class="xl27">500KHz<font class="font8">陶瓷谐振器外接端</font></td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>5</td>
<td class="xl26">4.1</td>
<td class="xl26">4.0</td>
<td class="xl24">单频信号输出端</td>
<td class="xl25"></td>
<td align="right" x:num>29</td>
<td class="xl26">5.7</td>
<td class="xl26">5.8</td>
<td class="xl24">同步<font class="font9">AFC-1</font><font class="font8">环路低通滤波外接端</font></td></tr>
<tr style="HEIGHT: 14.25pt" height="19">
<td style="HEIGHT: 14.25pt" align="right" height="19" x:num>6</td>
<td class="xl26">0</td>
<td class="xl26">0</td>
<td class="xl24" style="mso-ignore: colspan" colspan="2">图象中频伴音中频处理电路公共接地端</td>
<td align="right" x:num>30</td>
<td class="xl26">0.2</td>
<td class="xl26">7.4</td>
<td class="xl24">行同步一致(符合门)检波器滤波器外接端</td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>7</td>
<td class="xl26">4.6</td>
<td class="xl26">4.8</td>
<td class="xl24" style="mso-ignore: colspan" colspan="2">图象中频放大器对称端</td>
<td align="right" x:num>31</td>
<td class="xl26">3.7</td>
<td class="xl26">0.4</td>
<td class="xl27">50Hz/60Hz<font class="font8">场频识别输出端</font></td></tr>
<tr style="HEIGHT: 14.25pt" height="19">
<td style="HEIGHT: 14.25pt" align="right" height="19" x:num>8</td>
<td class="xl26">4.6</td>
<td class="xl26">4.8</td>
<td class="xl24">衡输入端</td>
<td class="xl25"></td>
<td align="right" x:num>32</td>
<td class="xl26">4.5</td>
<td class="xl26">4.8</td>
<td class="xl24">场激励脉冲信号输出端场同步灵敏度设置端及场同步端</td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>9</td>
<td class="xl26">8.0</td>
<td class="xl26">6.0</td>
<td class="xl24" style="mso-ignore: colspan" colspan="2">调谐器<font class="font9">AGC</font><font class="font8">延迟控制输入端</font></td>
<td align="right" x:num>33</td>
<td class="xl26">6.3</td>
<td class="xl26">7.0</td>
<td class="xl24">同步分离视频信号输入端</td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>10</td>
<td class="xl26">8.8</td>
<td class="xl26">7.0</td>
<td class="xl27" style="mso-ignore: colspan" colspan="2">AGC<font class="font8">波波平滑电路外接端</font></td>
<td align="right" x:num>34</td>
<td class="xl26">0</td>
<td class="xl26">0</td>
<td class="xl24">视频信号色度信号公共接地端</td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>11</td>
<td class="xl26">9.0</td>
<td class="xl26">9.0</td>
<td class="xl24" style="mso-ignore: colspan" colspan="2">图像中频伴音中频电路<font class="font9">QV</font><font class="font8">电源输入端</font></td>
<td align="right" x:num>35</td>
<td class="xl26">6.1</td>
<td class="xl26">4.4</td>
<td class="xl24">亮度控制直流电压输入端</td></tr>
<tr style="HEIGHT: 14.25pt" height="19">
<td style="HEIGHT: 14.25pt" align="right" height="19" x:num>12</td>
<td class="xl26">5.9</td>
<td class="xl26">6.7</td>
<td class="xl24" style="mso-ignore: colspan" colspan="2">对比度控制直流电压输入端色同步净化调整电路外接端</td>
<td align="right" x:num>36</td>
<td class="xl26">0.4</td>
<td class="xl26">2.8</td>
<td class="xl24">亮度信号钳位电容处接端</td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>13</td>
<td class="xl26">9.0</td>
<td class="xl26">9.0</td>
<td class="xl24" style="mso-ignore: colspan" colspan="2">同频电路视频电路和色度信号处理电路<font class="font9">QV</font><font class="font8">电源输出端</font></td>
<td align="right" x:num>37</td>
<td class="xl26">7.8</td>
<td class="xl26">8.6</td>
<td class="xl24">亮度信号二次微分信号输入端亮度信号锐度控制输入端</td></tr>
<tr style="HEIGHT: 14.25pt" height="19">
<td style="HEIGHT: 14.25pt" align="right" height="19" x:num>14</td>
<td class="xl26">0.5</td>
<td class="xl26">5.7(0-N)</td>
<td class="xl24" style="mso-ignore: colspan" colspan="2">色度,延迟线激励色度信号输出端</td>
<td align="right" x:num>38</td>
<td class="xl26">1.8</td>
<td class="xl26">1.8</td>
<td class="xl24">亮度信号输入端</td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>15</td>
<td class="xl26">0.6</td>
<td class="xl28">7.0(&lt;<span style="mso-spacerun: yes">&nbsp;&nbsp; </span>)</td>
<td class="xl24" style="mso-ignore: colspan" colspan="2">识别检波器滤波电容外接端</td>
<td align="right" x:num>39</td>
<td class="xl26">5.3</td>
<td class="xl26">5.6</td>
<td class="xl27">ACC<font class="font8">消色器滤波端</font></td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>16</td>
<td class="xl26">5.5</td>
<td class="xl26">5.8</td>
<td class="xl24" style="mso-ignore: colspan" colspan="2">色副载波产生电路<font class="font9">VCXO</font><font class="font8">晶体外接端</font></td>
<td align="right" x:num>40</td>
<td class="xl26">4.8</td>
<td class="xl26">4.8</td>
<td class="xl24">色度信号输入端及色饱和度控制直流电压输入端</td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>17</td>
<td class="xl26">5.7</td>
<td class="xl26">6.2</td>
<td class="xl24" style="mso-ignore: colspan" colspan="2">自动相位控制(<font class="font9">APC</font><font class="font8">)低通滤波器外接端</font></td>
<td align="right" x:num>41</td>
<td class="xl26">3.3</td>
<td class="xl26">6.2</td>
<td class="xl27">ACC<font class="font8">消色输入端</font></td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>18</td>
<td class="xl26">2.4</td>
<td class="xl26">3.4</td>
<td class="xl24" style="mso-ignore: colspan" colspan="2">(<font class="font9">B-Y</font><font class="font8">)已调制色差信号输入端</font></td>
<td align="right" x:num>42</td>
<td class="xl26">3.8</td>
<td class="xl26">3.5</td>
<td class="xl24">图象检波外接端</td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>19</td>
<td class="xl26">4.5</td>
<td class="xl26">4.8</td>
<td class="xl27" style="mso-ignore: colspan" colspan="2">NTSC<font class="font8">制色调制直流电压输入端</font></td>
<td align="right" x:num>43</td>
<td class="xl26">6.9</td>
<td class="xl26">7.0</td>
<td class="xl27">AFT<font class="font8">移电路外接端</font></td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>20</td>
<td class="xl26">2.4</td>
<td class="xl26">3.5</td>
<td class="xl24" style="mso-ignore: colspan" colspan="2">(<font class="font9">B-Y</font><font class="font8">)已调制色差信号输入端</font></td>
<td align="right" x:num>44</td>
<td class="xl26">2.4</td>
<td class="xl26">5.4</td>
<td class="xl27">AFT<font class="font8">控制电压输出端</font></td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>21</td>
<td class="xl26">5.2</td>
<td class="xl26">5.5</td>
<td class="xl24">(<font class="font9">R-Y</font><font class="font8">)输出端</font></td>
<td class="xl25"></td>
<td align="right" x:num>45</td>
<td class="xl26">7.4</td>
<td class="xl26">5.0</td>
<td class="xl24">第二伴音中频信号输入端及电压控制器控制电压输入</td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>22</td>
<td class="xl26">5.2</td>
<td class="xl26">5.8</td>
<td class="xl24">(<font class="font9">G-Y</font><font class="font8">)输出端</font></td>
<td class="xl25"></td>
<td align="right" x:num>46</td>
<td class="xl26">8.1</td>
<td class="xl26">4.0</td>
<td class="xl24">调谐器<font class="font9">AGC</font><font class="font8">电压输出端</font></td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>23</td>
<td class="xl26">8.8</td>
<td class="xl26">5.5</td>
<td class="xl24">(<font class="font9">G-Y</font><font class="font8">)输出端</font></td>
<td class="xl25"></td>
<td align="right" x:num>47</td>
<td class="xl26">4.7</td>
<td class="xl26">5.0</td>
<td class="xl24">图象检波线圈</td></tr>
<tr style="HEIGHT: 15pt" height="20">
<td style="HEIGHT: 15pt" align="right" height="20" x:num>24</td>
<td class="xl26">7.2</td>
<td class="xl26">4.5</td>
<td class="xl24">亮度信号<font class="font9">-Y</font><font class="font8">输出端</font></td>
<td class="xl25"></td>
<td align="right" x:num>48</td>
<td class="xl26">4.7</td>
<td class="xl26">5.0</td>
<td class="xl24">外接端</td></tr></tbody></table></p>

回帖(1)

chris

2013-4-22 19:46:36
音频前置放大器

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