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PDF LM108 Data sheet ( Hoja de datos )
| Número de pieza | LM108 | |
| Descripción | Operational Amplifiers | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LM108 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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December 1994
LM108 LM208 LM308 Operational Amplifiers
General Description
The LM108 series are precision operational amplifiers hav-
ing specifications a factor of ten better than FET amplifiers
over a b55 C to a125 C temperature range
The devices operate with supply voltages from g2V to
g20V and have sufficient supply rejection to use unregulat-
ed supplies Although the circuit is interchangeable with and
uses the same compensation as the LM101A an alternate
compensation scheme can be used to make it particularly
insensitive to power supply noise and to make supply by-
pass capacitors unnecessary
The low current error of the LM108 series makes possible
many designs that are not practical with conventional ampli-
fiers In fact it operates from 10 MX source resistances
introducing less error than devices like the 709 with 10 kX
sources Integrators with drifts less than 500 mV sec and
analog time delays in excess of one hour can be made us-
ing capacitors no larger than 1 mF
The LM108 is guaranteed from b55 C to a125 C the
LM208 from b25 C to a85 C and the LM308 from 0 C to
a70 C
Features
Y Maximum input bias current of 3 0 nA over temperature
Y Offset current less than 400 pA over temperature
Y Supply current of only 300 mA even in saturation
Y Guaranteed drift characteristics
Compensation Circuits
Standard Compensation Circuit
Alternate Frequency Compensation
Cf t
R1 CO
R1 a R2
CO e 30 pF
Bandwidth and slew rate are proportional to 1 Cf
TL H 7758 – 1
TL H 7758 – 2
Improves rejection of power supply noise by a factor of ten
Bandwidth and slew rate are proportional to 1 Cs
Feedforward Compensation
C1995 National Semiconductor Corporation TL H 7758
TL H 7758 – 3
RRD-B30M115 Printed in U S A
1 page  
Typical Performance Characteristics LM308
Input Currents
Offset Error
Drift Error
Input Noise Voltage
Power Supply Rejection
Closed Loop
Output Impedance
Voltage Gain
Output Swing
Supply Current
Open Loop
Frequency Response
Large Signal
Frequency Response
Voltage Follower
Pulse Response
TL H 7758 – 7
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet LM108.PDF ] | |
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