|
|
PDF GS321 Data sheet ( Hoja de datos )
| Número de pieza | GS321 | |
| Descripción | Low Power Single Operational Amplifiers | |
| Fabricantes | Globaltech | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de GS321 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
|
No Preview Available !
Low Power Single Operational Amplifiers
Product Description
The GS321 brings performance and economy to
low power systems.
With a high unity gain frequency and a guaranteed
0.4V/μs slew rate, the quiescent current is only
430μA/amplifier (5V).
The input common mode range includes ground
and therefore the device is able to operate in
single supply applications as well as in dual supply
applications. It is also capable of comfortably
driving large capacitive loads.
The GS321 is available in the SOT-23-5L
package. Overall the GS321 is a low power, wide
supply range performance op amp that can be
designed into a wide range of applications at an
economical price without sacrificing valuable board
space.
Features
Gain-Bandwidth product: 1MHz
Low supply current: 430μA
Low input bias current: 45nA
Wide supply voltage range: +3V to +32V
Single version of GS358
Applications
Chargers
Power supplies
Industrial: controls, instruments
Desktops
Communications infrastructure
Block Diagram
SOT-23-5L
+IN 1
GND 2
-IN 3
5
VCC
4
OUTPUT
Top View
www.gs-power.com 1
1 page  
Application Summary
The GS321 op amp can operate with a single or dual power supply voltage, has true-differential inputs,
and remain in the linear mode with an input common-mode voltage of 0 VDC. This amplifier operates
over a wide range of power supply voltages, with little change in performance characteristics. At 25°C
amplifier operation is possible down to a minimum supply voltage of 3V.
Large differential input voltages can be easily accommodated and, as input differential voltage
protection diodes are not needed, no large input currents result from large differential input voltages.
The differential input voltage may be larger than V+ without damaging the device. Protection should be
provided to prevent the input voltages from going negative more than −0.3 VDC (at 25°C). An input
clamp diode with a resistor to the IC input terminal can be used.
To reduce the power supply drain, the amplifier has a class A output stage for small signal levels which
converts to class B in a large signal mode. This allows the amplifiers to both source and sink large
output currents. Therefore both NPN and PNP external current boost transistors can be used to extend
the power capability of the basic amplifiers. The output voltage needs to raise approximately 1 diode
drop above ground to bias the on-chip vertical PNP transistor for output current sinking applications.
For AC applications, where the load is capacitively coupled to the output of the amplifier, a resistor
should be used, from the output of the amplifier to ground to increase the class A bias current and to
reduce distortion.
Capacitive loads which are applied directly to the output of the amplifier reduce the loop stability margin.
Values of 50pF can be accommodated using the worst-case non-inverting unity gain connection. Large
closed loop gains or resistive isolation should be used if large load capacitance must be driven by the
amplifier.
The bias network of the GS321 establishes a supply current which is independent of the magnitude of
the power supply voltage over the range of from 3 VDC to 30 VDC.
Output short circuits either to ground or to the positive power supply should be of short time duration.
Units can be destroyed, 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 excessive junction
temperatures. The larger value of output source current which is available at 25°C provides a larger
output current capability at elevated temperatures than a standard IC op amp.
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, introducing a pseudo-ground (a bias voltage reference of 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.
www.gs-power.com 5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet GS321.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| GS321 | Low Power Single Operational Amplifiers | Globaltech |
| GS324 | Low Power QUAD Operational Amplifiers | Globaltech |
| 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 |