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參數資料
| 型號： | LM6365MX |
| 英文描述： | Voltage-Feedback Operational Amplifier |
| 中文描述： | 電壓反饋運算放大器 |
| 文件頁數： | 7/12頁 |
| 文件大?。?/td> | 294K |
| 代理商： | LM6365MX |
Simplified Schematic
Application Tips
The LM6362 has been decompensated for a wider
gain-bandwidth product than the LM6361. However, the
LM6362 still offers stability at gains of 2 (and 1) or greater
over the specified ranges of temperature, power supply volt-
age, and load. Since this decompensation involved reducing
the emitter-degeneration resistors in the op amp’s input
stage, the DC precision has been increased in the form of
lower offset voltage and higher open-loop gain.
Other op amps in this family include the LM6361, LM6364,
and LM6365. If unity-gain stability is required, the LM6361
should be used. The LM6364 has been decompensated for
operation at gains of 5 or more, with corresponding greater
gain-bandwidth product (125 MHz, typical) and DC preci-
sion.
The
fully-uncompensated
gain-bandwidth product of 725 MHz, typical, and is stable for
gains of 25 or more. All parts in this family, regardless of
compensation, have the same high slew rate of 300 V/μs
(typ).
The LM6362 is unusually tolerant of capacitive loads. Most
op amps tend to oscillate when their load capacitance is
greater than about 200 pF (in low-gain circuits). However,
load capacitance on the LM6362 effectively increases its
compensation capacitance, thus slowing the op amp’s re-
sponse and reducing its bandwidth. The compensation is not
ideal, though, and ringing may occur in low-gain circuits with
large capacitive loads.
LM6365
offers
Power supply bypassing is not as critical for LM6362 as it is
for other op amps in its speed class. However, bypassing will
improve the stability and transient response of the LM6362,
and is recommended for every design. 0.01 μF to 0.1 μF ce-
ramic capacitors should be used (from each supply “rail” to
ground); if the device is far away from its power supply
source, an additional 2.2 μF to 10 μF of tantalum may be re-
quired for extra noise reduction.
Keep all leads short to reduce stray capacitance and lead in-
ductance, and make sure ground paths are low-impedance,
especially where heavier currents will be flowing. Stray ca-
pacitance in the circuit layout can cause signal coupling from
one pin, input or lead to another, and can cause circuit gain
to unintentionally vary with frequency.
Breadboarded circuits will work best if they are built using
generic PC boards with a good ground plane. If the op amps
are used with sockets, as opposed to being soldered into the
circuit, the additional input capacitance may degrade circuit
frequency response. At low gains (+2 or 1), a feedback ca-
pacitor C
from output to inverting input will compensate for
the phase lag caused by capacitance at the inverting input.
Typically, values from 2 pF to 5 pF work well; however, best
results can be obtained by observing the amplifier pulse re-
sponse and optimizing C
f
for the particular layout.
DS011061-1
7
www.national.com
PrintDate=1997/09/29 PrintTime=12:36:23 18016 ds011061 Rev. No. 1
cmserv
Proof
7
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PDF描述 |
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| LM62 | |
| LM6311 | |
| LM6321M | IC-SM-HIGH SPEED BUFFER |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM6365N | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:High Speed Operational Amplifier |
| LM636-S | 功能描述:基本/快動開關 Foot Switch RoHS:否 制造商:Omron Electronics 觸點形式:SPDT 執(zhí)行器:Lever 電流額定值:5 A 電壓額定值 AC:250 V 電壓額定值 DC:30 V 功率額定值: 工作力:120 g IP 等級:IP 67 NEMA 額定值: 端接類型:Wire 安裝:Panel |
| LM637ACJ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Feedback Operational Amplifier |
| LM637ACN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Feedback Operational Amplifier |
| LM637AMJ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Feedback Operational Amplifier |
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