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| 型号： | LMH6734MQX/NOPB |
| 厂商： | National Semiconductor |
| 文件页数： | 4/21页 |
| 文件大小： | 0K |
| 描述： | IC BUFFER TRPL SELECT 16-SSOP |
| 标准包装： | 2,500 |
| 系列： | PowerWise® |
| 应用： | 电流反馈 |
| 电路数： | 3 |
| -3db带宽： | 925MHz |
| 转换速率： | 3750 V/µs |
| 电流 - 电源： | 19.5mA |
| 电流 - 输出 / 通道： | 80mA |
| 电压 - 电源，单路/双路(±)： | 3 V ~ 12 V，±1.5 V ~ 6 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-LSSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 带卷 (TR) |
| 配用： | LMH730275/NOPB-ND - EVAL BOARD HS TRIPLE SSOP OPAMP |
| 其它名称： | LMH6734MQX |
VOUT
+
-
VIN
+ VSUPPLY
CPOS
6.8 PF
0.1 PF
6.8 PF
CNEG
0.1 PF
RIN
- VSUPPLY
OBSOLETE
SNOSAY0C – JUNE 2007 – REVISED APRIL 2013
APPLICATION INFORMATION
GENERAL INFORMATION
The LMH6734 is a high speed current feedback selectable gain buffer (SGB), optimized for very high speed
applications. With its internal feedback and gain-setting resistors, RF = RG = 327, the LMH6734 offers excellent
AC performance while simplifying board layout and minimizing the effects of layout related parasitic components.
The LMH6734 has no internal ground reference so single or split supply configurations are both equally useful.
SETTING THE CLOSED LOOP GAIN
The LMH6734 can be configured with gain settings of AV = +2, +1, or 1. Table 1 shows the non-inverting and
inverting pin connections to achieve the desired closed loop gain.
Table 1. Setting the Closed Loop Gain
INPUT CONNECTIONS
GAIN AV
Non-Inverting
Inverting
1 V/V
Ground
Input Signal
+1 V/V
Input Signal
NC (Open)
+2 V/V
Input Signal
Ground
SPLIT SUPPLY APPLICATION
The recommended split supply circuit applications are shown in Figure 35, Figure 36 , and Figure 37. In all three
configurations the input signal is DC coupled with a termination resister input RIN = 50. In Figure 35 the
inverting input is connected to ground completing the internal feedback loop to set the gain to +2 V/V. In
Figure 36 the inverting input is open (no-connect), thus providing a buffer configuration of +1 V/V. Figure 37
shows a buffer configuration with a gain of
1 V/V. In this configuration an input resistor of 59 was used to
balance the internal RG resistor of 327 and to provide a 50 termination.
Figure 35. Recommended Split Supply Non-Inverting Gain Circuit, Gain = +2 V/V
12
Copyright 2007–2013, Texas Instruments Incorporated
Product Folder Links: 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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