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| 型号： | LM7131ACMX |
| 厂商： | National Semiconductor |
| 文件页数： | 8/28页 |
| 文件大小： | 0K |
| 描述： | IC OP AMP TINY HS SNG SUPP 8SOIC |
| 标准包装： | 2,500 |
| 放大器类型： | 电压反馈 |
| 电路数： | 1 |
| 转换速率： | 150 V/µs |
| 增益带宽积： | 70MHz |
| -3db带宽： | 90MHz |
| 电流 - 输入偏压： | 20µA |
| 电压 - 输入偏移： | 20µV |
| 电流 - 电源： | 7.5mA |
| 电流 - 输出 / 通道： | 65mA |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 12 V，± 2.5 V ~ 6 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
| 其它名称： | *LM7131ACMX |
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OBSOLETE
SNOS737C – SEPTEMBER 1999 – REVISED APRIL 2013
Numbers in parentheses are measured
fixture capacitances w/o DUT and load.
Figure 34. Cable Driver 75
′ RG-59
Numbers in parentheses are measured
fixture capacitances w/o DUT and load.
Figure 35. Cable Driver Gain of 10 AV = +10
Driving Type 1175 Flash A/D Loads
The circuits in Figure 36 Figure 37 Figure 38 Figure 39 Figure 40 Figure 41 show a LM7131 in a voltage follower
configuration driving the passive equivalent of a typical flash A/D input. Note that there is a slight ringing on the
output, which can affect accurate analog-to-digital conversion. In these graphs, we have adjusted the ringing to
be a little larger than desirable in order to better show the settling time. Most settling times at low gain are about
75 ns to < 1% of final voltage. The ringing can be reduced by adding a low value (approximately 500
Ω) feedback
resistor from the output to the inverting input and placing a small (picofarad range) capacitor across the feedback
resistor. See Figure 39 and Figure 40 for schematics and respective performance curves for flash A/D driving at
AV = +5 with and without a 2 pF feedback capacitor.
See Feedback Resistor Values and Feedback Compensation. Ringing can also be reduced by placing an
isolation resistor between the output and the analog-to-digital converter input—see sections on Capacitive Load
Please refer to Figure 36, Figure 37, Figure 38 Figure 39, Figure 40, and Figure 41 for schematics of test setups
for driving flash A/D converters.
16
Copyright 1999–2013, Texas Instruments Incorporated
Product Folder Links: LM7131
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM7131ACN | 制造商:NSC 制造商全称:National Semiconductor 功能描述:IC-HIGH SPEED OP AMP |
| LM7131BCM | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM7131BCM5 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Tiny High Speed Single Supply Operational Amplifier |
| LM7131BCM5X | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM7131BCMX | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Tiny High Speed Single Supply Operational Amplifier |
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