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參數(shù)資料
| 型號： | LMH6718MA |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 緩沖放大器 |
| 英文描述： | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| 中文描述： | DUAL BUFFER AMPLIFIER, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 846K |
| 代理商： | LMH6718MA |
Application Section
(Continued)
LOAD TERMINATION
The LMH6718 can source and sink nearly equal amounts of
current.
DRIVING CABLES AND CAPACITIVE LOADS
When driving cables, double termination is used to prevent
reflections. For capacitive load applications, a small series
resistor at the output of the LMH6718 will improve stability
and settling performance. The
Suggested R
S
vs. C
L
plot,
shown below in
Figure 10
, gives the recommended series
resistance value for optimum flatness at various capacitive
loads.
TRANSMISSION LINE MATCHING
One method for matching the characteristic impedance (Z
)
of a transmission line or cable is to place the appropriate
resistor at the input or output of the amplifier.
Figure 11
shows typical inverting and non-inverting circuit configura-
tions for matching transmission lines.
Non-Inverting gain applications:
Connect pin 2 as indicated in the table in the
Closed
Loop Gain Selection
section.
Make R
1
, R
2
, R
6
, and R
7
equal to Z
O
.
Use R
3
to isolate the amplifier from reactive loading
caused by the transmission line, or by parasitics.
Inverting gain applications:
Connect R
3
directly to ground.
Make the resistors R
4
, R
6
, and R
7
equal to Z
O
.
Make R
5
\
R
g
= Z
O
.
The input and output matching resistors attenuate the signal
by a factor of 2, therefore additional gain is needed. Use C6
to match the output transmission line over a greater fre-
quency range. C6 compensates for the increase of the am-
plifier’s output impedance with frequency.
20040145
FIGURE 7. Dual Supply, A
V
= 1V/V Configuration
20040146
FIGURE 8. Dual Supply, A
V
= +1V/V Configuration
20040147
FIGURE 9. Dual Supply, A
V
= +2V/V Configuration
20040166
FIGURE 10. Suggested R
S
vs. C
L
L
www.national.com
12
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|---|---|
| LMH6718MA/NOPB | 功能描述:BUFFER PROG DUAL HI OUT 8-SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:VIP10™ 標(biāo)準(zhǔn)包裝:1,000 系列:- 放大器類型:電壓反饋 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:33 V/µs 增益帶寬積:20MHz -3db帶寬:30MHz 電流 - 輸入偏壓:2nA 電壓 - 輸入偏移:3000µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:帶卷 (TR) |
| LMH6718MAX/NOPB | 功能描述:IC BUFFER SELECT GAIN DUAL 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:VIP10™ 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:滿擺幅 轉(zhuǎn)換速率:3 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:1pA 電壓 - 輸入偏移:70µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:Digi-Reel® 其它名稱:MAX4475AUT#TG16DKR |
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| LMH6720 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Wideband Video Op Amp; Single, Single with Shutdown and Quad |
| LMH6720J-QML | 制造商:Texas Instruments 功能描述: |
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