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參數(shù)資料
| 型號(hào)： | LMH6704 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 650 MHz Progammable Gain Buffer with Disable |
| 中文描述： | 650兆赫Progammable增益緩沖器具有禁用 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 774K |
| 代理商： | LMH6704 |
Application Section
GENERAL INFORMATION
The LMH6704 is a high speed current feedback Program-
mable Gain Buffer (PGB), optimized for very high speed and
low distortion. With its internal feedback and gain-setting
resistors the LMH6704 offers excellent AC performance
while simplifying board layout and minimizing the affects of
layout related parasitic components. The LMH6704 has no
internal ground reference so single or split supply configura-
tions are both equally useful.
SETTING THE CLOSED LOOP GAIN
The LMH6704 is a current feedback amplifier with on-chip
R
= R
G
= 465
. As such it can be configured with an A
=
+2, A
= +1, or an A
= 1 by connecting pins 3 and 4 as
described in the chart below.
GAIN A
V
Input Connections
Non-Inverting (Pin 3)
Ground
Input Signal
Input Signal
Inverting (Pin 4)
Input Signal
NC (Open)
Ground
1 V/V
+1 V/V
+2 V/V
The gain accuracy of the LMH6704 is accurate and guaran-
teed over temperature to within
±
1%. The internal gain
setting resistors, R
and R
, match very well. The LMH6704
architecture takes advantage of the fact that the internal gain
setting resistors track each other well over a wide range of
temperature and process variation to keep the overall gain
constant, despite the fact that the individual resistors have
nominal temperature drifts. Therefore, using external resis-
tors in series with R
to change the gain will result in poor
gain accuracy over temperature.
20103603
FIGURE 1. Recommended Gain of +2 Circuit
20103604
FIGURE 2. Recommended Gain of +1 Circuit
20103605
FIGURE 3. Recommended Gain of 1 Circuit
20103609
FIGURE 4. Alternate Unity Gain Configuration
L
www.national.com
7
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMH6704MA | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| LMH6704MA/NOPB | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| LMH6704MAX | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| LMH6704MAX/NOPB | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| LMH6704MF | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
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