|
|
PDF LP324N Data sheet ( Hoja de datos )
| Número de pieza | LP324N | |
| Descripción | Micropower Quad Operational Amplifier | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LP324N (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
|
No Preview Available !
September 1999
LP2902/LP324
Micropower Quad Operational Amplifier
General Description
The LP324 series consists of four independent, high gain in-
ternally compensated micropower operational amplifiers.
These amplifiers are specially suited for operation in battery
systems while maintaining good input specifications, and ex-
tremely low supply current drain. In addition, the LP324 has
an input common mode range, and output source range
which includes ground, making it ideal in single supply appli-
cations.
These amplifiers are ideal in applications which include por-
table instrumentation, battery backup equipment, and other
circuits which require good DC performance and low supply
current.
Features
n Low supply current: 125 µA (max)
n Low offset voltage: 2 mV (max)
n Low input bias current: 4 nA (max)
n Input common mode to GND
n Interfaces to CMOS logic
n Wide supply range: 3V < V+ < 32V
n Small Outline Package available
n Pin-for-pin compatible with LM324
Connection Diagram
Dual-In-Line (N) and SO (M)
Simplified Schematic
DS008562-1
Order Number LP324M or LP2902M
See NS Package Number M14A
Order Number LP324N or LP2902N
See NS Package Number N14A
DS008562-2
© 1999 National Semiconductor Corporation DS008562
www.national.com
1 page  
Application Hints (Continued)
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
should be used from the output of the amplifier to ground.
The resistor biases the output into class A operation.
The LP324 has improved stability margin for driving capaci-
tive loads. No special precautions are needed to drive loads
in the 50 pF to 1000 pF range. It should be noted however
that since the power supply current has been reduced by a
factor of 10, so also has the slew rate and gain bandwidth
product. This reduction can cause reduced performance in
AC applications where the LM324 is being replaced by an
LP324. Such situations usually occur when the LM324 has
been operated near its power bandwidth.
Output short circuits either to ground or to the positive power
supply should be of short time duration. Units can be de-
stroyed, not as a result of the short circuit current causing
metal fusing, but rather due to the large increase in IC chip
dissipation which will cause eventual failure due to exces-
sive junction temperatures. For example: If all four amplifiers
were simultaneously shorted to ground on a 10V supply the
junction temperature would rise by 110˚C.
Driving CMOS
Exceeding the negative common-mode limit on either input
will cause a reversal of phase to the output and force the am-
plifier to the corresponding high or low state. Exceeding the
negative common-mode limit on both inputs will force the
amplifier output to a high state. Exceeding the positive
common-mode limit on a single input will not change the
phase of the output. However, if both inputs exceed the limit,
the output of the amplifier will be forced to a low state. In nei-
ther case does a latch occur since returning the input within
the common mode range puts the input stage and thus the
amplifier in a normal operating mode.
The circuits presented in the section on typical applications
emphasize operation on only a single power supply voltage.
If complementary power supplies are available, all of the
standard op amp circuits can be used. In general, introduc-
ing a pseudo-ground (a bias voltage reference to V+/2) will
allow operation above and below this value in single power
supply systems. Many application circuits are shown which
take advantage of the wide input common-mode voltage
range which includes ground. In most cases, input biasing is
not required and input voltages which range to ground can
easily be accommodated.
Comparator with Hysteresis
DS008562-3
Non-Inverting Amplifier
DS008562-6
Adder/Subtractor
DS008562-4
Unity Gain Buffer
DS008562-5
DS008562-7
Positive Integrator
DS008562-8
5 www.national.com
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet LP324N.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LP324 | Micropower Quad Operational Amplifier | National Semiconductor |
| LP324 | Micropower Quad Operational Amplifier | National Semiconductor |
| LP324 | ULTRA-LOW-POWER QUADRUPLE OPERATIONAL AMPLIFIERS (Rev. A) |  Texas Instruments |
| LP324-N | LP324/LP2902 Micropower Quad Operational Amplifier (Rev. C) | Texas Instruments |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |