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參數(shù)資料
| 型號(hào)： | LP124J |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 運(yùn)算放大器 |
| 英文描述： | Micropower Quad Operational Amplifier |
| 中文描述： | QUAD OP-AMP, 4000 uV OFFSET-MAX, 0.1 MHz BAND WIDTH, CDIP14 |
| 封裝： | CERAMIC, DIP-14 |
| 文件頁(yè)數(shù)： | 4/10頁(yè) |
| 文件大?。?/td> | 230K |
| 代理商： | LP124J |
Typical Performance Curves
(Continued)
Pulse Response
Voltage Follower
Response (Small Signal)
Voltage Follower Pulse
Rejection Ratio
Common Mode
TL/H/8562–20
Frequency Response
Large Signal
Current Sourcing
Output Characteristics
Current Sinking
Output Characteristics
Current Limiting
TL/H/8562–19
Application Hints
The LP124 series is a micro-power pin-for-pin equivalent to
the LM124 op amps. Power supply current, input bias cur-
rent, and input offset current have all been reduced by a
factor of 10 over the LM124. Like its predecessor, the
LP124 series op amps can operate on single supply, have
true-differential inputs, and remain in the linear mode with
an input common-mode voltage of 0 V
DC
.
The pinouts of the package have been designed to simplify
PC board layouts. Inverting inputs are adjacent to outputs
for all of the amplifiers and the outputs have also been
placed at the corners of the package (pins 1, 7, 8, and 14).
Precautions should be taken to insure that the power supply
for the integrated circuit never becomes reversed in polarity
or the unit is not inadvertently installed backwards in the
test socket as an unlimited current surge through the result-
ing forward diode within the IC could destroy the unit.
Large differential input voltages can be easily accommodat-
ed and, as input differential voltage protection diodes are
not needed, no large input currents result from large differ-
ential input voltages. The differential input voltage may be
larger than V
a
without damaging the device. Protection
should be provided to prevent the input voltages from going
negative more than
b
0.3 V
DC
(at 25
§
C). An input clamp
diode with a resistor to the IC input terminal can be used.
The amplifiers have a class B output stage which allows the
amplifiers to both source and sink output currents. In appli-
cations where crossover distortion is undesirable, a resistor
http://www.national.com
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