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參數(shù)資料
| 型號： | LMH6580VSX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 多路復用及模擬開關(guān) |
| 英文描述： | 8-CHANNEL, CROSS POINT SWITCH, PQFP48 |
| 封裝： | TQFP-48 |
| 文件頁數(shù)： | 9/24頁 |
| 文件大?。?/td> | 693K |
| 代理商： | LMH6580VSX |
30007244
FIGURE 3. Input Expansion with Separate Termination
Resistors
30007246
FIGURE 4. Input Expansion Frequency Response
30007247
FIGURE 5. Input Expansion Frequency Response
DRIVING CAPACITIVE LOADS
Capacitive output loading applications will benefit from the
use of a series output resistor R
OUT. Capacitive loads of
5 pF to 120 pF are the most critical, causing ringing, frequency
response peaking and possible oscillation. Since most ca-
pacitive loading is due to undesired parasitic capacitances the
values of the capacitive loading will not usually be known ex-
actly. It is best to start with a conservative value of R
OUT and
decrease the value until the bandwidth shows slight peaking.
At this point the value of the isloation resistor will be deter-
mined by whether flat frequency response or maximum band-
width is the desired goal. Smaller values of R
OUT will produce
some peaking, but maximum bandwidth. Larger resistor val-
ues will decrease bandwidth and suppress peaking.
As starting values, a capacitive load of 5 pF should have
around 75
of isolation resistance. A value of 120 pF would
require around 12
. When driving transmission lines, the out-
put termination resistor is normally sufficient.
17
www.national.com
LMH6580/LMH6581
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參數(shù)描述 |
|---|---|
| LMH6581 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:8x4 500MHz Analog Crosspoint Switch, Gain of 1, Gain of 2 |
| LMH6581B E WAF | 制造商:Texas Instruments 功能描述: |
| LMH6581EVAL | 功能描述:BOARD EVALUATION FOR LMH6581 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 產(chǎn)品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- 主要目的:電源管理，電池充電器 嵌入式:否 已用 IC / 零件:MAX8903A 主要屬性:1 芯鋰離子電池 次要屬性:狀態(tài) LED 已供物品:板 |
| LMH6581VS | 制造商:Texas Instruments 功能描述: |
| LMH6581VS/NOPB | 功能描述:IC CROSSPOINT SWITCH 8X4 48TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 模擬開關(guān)，多路復用器，多路分解器 系列:- 產(chǎn)品培訓模塊:Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:- 電路:2 x SPST 導通狀態(tài)電阻:20 歐姆 電壓電源:單電源 電壓 - 電源，單路/雙路(±):3 V ~ 5.5 V 電流 - 電源:4.1mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:帶卷 (TR) |
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