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參數(shù)資料
| 型號： | LM2406T |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | IC-40MHZ TRIPLE CRT DRIVER |
| 中文描述： | 3 CHANNEL, VIDEO AMPLIFIER, PZFM11 |
| 封裝： | PLASTIC, TO-220, POWER PACK-11 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 143K |
| 代理商： | LM2406T |
TL/H/12327–4
FIGURE 3. V
OUT
vs V
IN
TL/H/12327–5
FIGURE 4. Power Dissipation vs V
CC
TL/H/12327–6
FIGURE 5. Large Signal Frequency Response
TL/H/12327–7
FIGURE 6. Pulse Response
Theory of Operation
The LM2406 is a high voltage monolithic triple CRT driver
suitable for VGA and SVGA display applications. The
LM2406 features
a
80V operation and low power dissipa-
tion. The part is housed in the industry standard 11-lead
TO-220 molded plastic power package.
The circuit diagram of the LM2406 is shown inFigure 1. Q1
and R2 provide a conversion of input voltage to current,
while Q2 acts as a common base or cascode amplifier stage
to drive the load resistor R1. Emitter followers Q3 and Q4
isolate the impedance of R1 from the capacitance of the
CRT cathode, and make the circuit relative insensitive to
load capacitance. The gain of this circuit is
b
R1/(R2
ll
R3)
and is fixed at
b
14.5. The bandwidth of the circuit is set by
the collector time constant formed by the resistor R1 and
associated capacitance of Q2, Q3, Q4 and stray layout ca-
pacitance. Transistor Q6 and resistors R7 and R8 provide
biasing to the output emitter-follower stage to reduce cross-
over distortion at low signal levels, while R3 provides a DC
bias offset to match the output level characteristics of the
preamplifier stage.
Figure 2 shows a typical test circuit for evaluation of the
LM2406. This circuit is designed to allow testing of the
LM2406 in a 50
X
environment, such as a pulse generator
and a scope, or a network analyzer. In this test circuit, two
resistors in series totaling 4.95 k
X
form a 100:1 wideband
low capacitance probe when connected to a 50
X
cable and
load. The input signal from the generator is AC coupled to
the base of Q5, while a DC bias of
a
12V is applied to the
base of Q2 (See Figure 2 ).
3
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| LM2406 | Monolithic Triple 9 ns CRT Driver |
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| LM2427T | Triple 80 MHz CRT Driver |
| LM2433 | 220V Monolithic Single Channel 16 MHz EDTV CRT Driver |
| LM2435 | Monolithic Triple 5.5 ns CRT Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2407 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Monolithic Triple 7.5 nS CRT Driver |
| LM2407DZT WAF | 制造商:Texas Instruments 功能描述: |
| LM2407T | 功能描述:IC DRIVER MONOLITH CRT TO220-11 RoHS:否 類別:集成電路 (IC) >> PMIC - 顯示器驅(qū)動器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)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(yīng)商設(shè)備封裝:16-QSOP 包裝:帶卷 (TR) |
| LM2408 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Monolithic Triple 4.5 ns CRT Driver |
| LM2408T | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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