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参数资料
| 型号： | LMH6734MQX/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 3 CHANNEL, VIDEO AMPLIFIER, PDSO16 |
| 封装： | ROHS COMPLIANT, SSOP-16 |
| 文件页数： | 5/18页 |
| 文件大小： | 561K |
| 代理商： | LMH6734MQX/NOPB |
2.2 k
resistors were chosen to set the input DC bias voltage
to 1/4 the supply voltage such that at high frequencies the
output voltage is gained up by +2 V/V.
30003642
FIGURE 4. Recommended Single Supply Non-Inverting
Gain Circuit, Gain = +2 V/V
30003644
FIGURE 5. Recommended Single Supply Non-Inverting
Gain Circuit, Gain = +1 V/V
30003643
FIGURE 6. Recommended Single Supply Inverting Gain
Circuit, Gain = 1 V/V
The gain of the LMH6734 is accurate to ±1% and stable over
temperature. The internal gain setting resistors, R
F and RG,
match very well. However, over process and temperature
their absolute value will change. Using external resistors in
series with R
G to change the gain will result in poor gain ac-
curacy over temperature and from part to part.
UNITY GAIN COMPENSATION
With a current feedback Selectable Gain Buffer like the
LMH6734, the feedback resistor is a compromise between
the value needed for stability at unity gain and the optimized
value used at a gain of two. The result of this compromise is
substantial peaking at unity gain. If this peaking is undesirable
a simple RC filter at the input of the buffer will smooth the
frequency response as shown in Figure 7. Figure 8 shows the
results of a simple filter placed on the non-inverting input. See
gain peaking.
30003630
FIGURE 7. Correction for Unity Gain Peaking
30003629
FIGURE 8. Frequency Response for Circuit in Figure 7
30003607
FIGURE 9. Alternate Unity Gain Compensation
13
www.national.com
LMH6734
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LMH6738 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Very Wideband, Low Distortion Triple Op Amp |
| LMH6738MQ | 功能描述:运算放大器 - 运放 RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| LMH6738MQ/NOPB | 功能描述:运算放大器 - 运放 Triple Video Op-Amp RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| LMH6738MQX | 功能描述:运算放大器 - 运放 RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| LMH6738MQX/NOPB | 功能描述:运算放大器 - 运放 RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
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