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參數(shù)資料
| 型號： | LM2480NA |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | RES 9.1K OHM 1/2W 5% CARBON FILM |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁數(shù)： | 3/4頁 |
| 文件大?。?/td> | 84K |
| 代理商： | LM2480NA |
Typical Performance Characteristics
(V
CC
= +80V), Test Circuit - Figure 3 unless otherwise specified.
THEORY OF OPERATION
The circuit diagram of the LM2480 is shown in Figure 1. The
DC clamp circuit amplifies the input signal by -18 and the
gain is set by the resistor ratio of 18R and R. The output
requires pull-up resistor to 80V. Figure 2 shows the test
circuit used for evaluation of the LM2480 Clamp Amplifier. A
high impedance voltmeter (
>
100M
) is used for DC mea-
surements at the output. The DC transfer function is shown
in Figure 4.
APPLICATION HINTS
Power Supply Bypass
The LM2480 should have proper power supply bypassing for
optimum performance. A 0.1μF capacitor should be con-
nected from the supply pin, V
, to ground, as close to the
supply and ground pins as is practical. Additionally, a 1.0μF
electrolycelectrolytictic capacitor should be connected from
the supply pin to ground. The electrolytic capacitor should
also be placed reasonably close to the LM2480’s supply and
ground pins.
Application Circuit
The application circuit shown in Figure 5 is designed to help
clamp the voltage at the output of the driver to the desired
level. Capacitor C
stabilizes the entire node at the anode of
the clamp diode, D
, by creating a low impedance at high
frequencies. Figure 5 also shows the standard application
circuit topology when used with an LM246X CRT driver. It
shows all the components necessary to optimize perfor-
mance as well as to protect against damage from a CRT arc
event. No additional components are required to protect the
LM2480 from arc damage.
Demonstration Hardware
National Semiconductor has designed a demonstration
neckboard for the LM126X, LM246X, and the LM2480
chipset. To obtain demonstration boards contact the National
Semiconductor Sales Office in your region.
20008304
FIGURE 4. V
out
vs V
in
20008307
FIGURE 5. One Channel of the LM2480 and LM246X
Application Circuit
L
www.national.com
3
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2480NA/NOPB | 功能描述:IC TRIPLE BIAS CLAMP 80V 8-DIP RoHS:是 類別:集成電路 (IC) >> PMIC - 顯示器驅(qū)動器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 顯示器類型:真空熒光 (VF) 配置:5 x 7（矩陣） 接口:串行 數(shù)字或字符:- 電流 - 電源:3.5mA 電源電壓:2.7 V ~ 3.6 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:16-SSOP（0.154"，3.90mm 寬） 供應商設(shè)備封裝:16-QSOP 包裝:帶卷 (TR) |
| LM2481 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:145V Triple Bias Clamp |
| LM2481NA | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:145V Triple Bias Clamp |
| LM2483 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:180V Triple Bias Clamp |
| LM2485 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:220V Triple Bias Clamp with G1 Blank Amplifier |
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