Motor de Búsqueda de Datasheet de Componentes Electrónicos
  Spanish  ▼
ALLDATASHEET.ES

X  

LS404M Datasheet(PDF) 6 Page - STMicroelectronics

No. de pieza LS404M
Descripción Electrónicos  HIGH PERFORMANCE QUAD OPERATIONAL AMPLIFIER
Download  11 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LS404M Datasheet(HTML) 6 Page - STMicroelectronics

Back Button LS404M Datasheet HTML 2Page - STMicroelectronics LS404M Datasheet HTML 3Page - STMicroelectronics LS404M Datasheet HTML 4Page - STMicroelectronics LS404M Datasheet HTML 5Page - STMicroelectronics LS404M Datasheet HTML 6Page - STMicroelectronics LS404M Datasheet HTML 7Page - STMicroelectronics LS404M Datasheet HTML 8Page - STMicroelectronics LS404M Datasheet HTML 9Page - STMicroelectronics LS404M Datasheet HTML 10Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 6 / 11 page
background image
LS404
6/11
APPLICATION INFORMATION: Active low-pass filter
BUTTERWORTH
The Butterworth is a "maximally flat" amplitude re-
sponse filter (figure 10) Butterworth filters are
used for filtering signals in data acquisition sys-
tems to prevent aliasing errors in samples-data
applications and for general purpose low-pass fil-
tering.
The cut-off frequency Fc, is the frequency at which
the amplitude response is down 3dB. The attenu-
ation rate beyond the cutoff frequency is n6 dB per
octave of frequency where n is the order (number
of poles) of the filter.
Other characteristics :
u Flattest possible amplitude response
u Excellent gain accuracy at low frequency
end of passband
BESSEL
The Bessel is a type of “linear phase” filter. Be-
cause of their linear phase characteristics, these
filters approximate a constant time delay over a
limited frequency range. Bessel filters pass tran-
sient waveforms with a minimum of distortion.
They are also used to provide time delays for low
pass filtering of modulated waveforms and as a
“running average” type filter.
The maximum phase shift is
radians where
n is the order (number of poles) of the filter. The
cut-off frequency fc, is defined as the frequency at
which the phase shift is one half of this value.
For accurate delay, the cut-off frequency should
be twice the maximum signal frequency.
The following table can be used to obtain the -3dB
frequency of the filter.
Other characteristics :
u Selectivity not as great as Chebyschev or
Butterworth
u Very little overshoot response to step inputs
u Fast rise time
CHEBYSCHEV
Chebyschev filters have greater selectivity than ei-
ther Bessel ro Butterworth at the expense of ripple
in the passband (figure 11).
Chebyschev filters are normally designed with
peak-to-peak ripple values from 0.2dB to 2dB.
Increased ripple in the passband allows increased
attenuation above the cut-off frequency.
The cut-off frequency is defined as the frequency
at which the amplitude response passes through
the specificed maximum ripple band and enters
the stop band.
Other characteristics :
u Greater selectivity
u Very non-linear phase response
u High overshoot response to step inputs
The table below shows the typical overshoot and setting time response of the low pass filters to a step
input.
Design of 2nd order active low pass filter (Sallen and Key configuration unity gain op-amp)
n
π
2
-----------
2 Pole
4 Pole
6 Pole
8 Pole
-3dB Frequency
0.77fc
0.67fc
0.57fc
0.50fc
Number of Poles
Peak
Overshoot
Settling Time (% of final value)
% Overshoot
±1%
±0.1%
±0.01%
Butterworth
2
4
6
8
4
11
14
14
1.1Fc sec.
1.7/fc
2.4/fc
3.1/fc
1.7Fc sec.
2.8/fc
3.9S/fc
5.1/fc
1.9Fc sec.
3.8/fc
5.0S/fc
7.1/fc
Bessel
2
4
6
8
0.4
0.8
0.6
0.1
0.8/fc
1.0/fc
1.3/fc
1.6/fc
1.4/fc
1.8/fc
2.1/fc
2.3/fc
1.7/fc
2.4/fc
2.7/fc
3.2/fc
Chebyschev (ripple ±0.25dB)
2
4
6
8
11
18
21
23
1.1/fc
3.0/fc
5.9/fc
8.4/fc
1.6/fc
5.4/fc
10.4/fc
16.4/fc
-
-
-
-
Chebyschev (ripple ±1dB)
2
4
6
8
21
28
32
34
1.6/fc
4.8/fc
8.2/fc
11.6/fc
2.7/fc
8.4/fc
16.3/fc
24.8/fc
-
-
-


Número de pieza similar - LS404M

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
STMicroelectronics
LS404M STMICROELECTRONICS-LS404M Datasheet
209Kb / 12P
   HIGH PERFORMANCE QUAD OPERATIONAL AMPLIFIERS
December 1997
logo
DONG IL TECHNOLOGY LTD.
LS404M DIT-LS404M Datasheet
1Mb / 2P
   COMMON MODE CHOKE COIL
LS404M DIT-LS404M Datasheet
1,005Kb / 1P
   COMMON MODE CHOKE COIL
More results

Descripción similar - LS404M

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Sanyo Semicon Device
LA6324N SANYO-LA6324N_06 Datasheet
141Kb / 5P
   High-Performance Quad Operational Amplifier
logo
NXP Semiconductors
NE5514 PHILIPS-NE5514 Datasheet
54Kb / 3P
   Quad high-performance operational amplifier
August 31, 1994
logo
NEC
UPC3403 NEC-UPC3403 Datasheet
270Kb / 8P
   HIGH PERFORMANCE QUAD OPERATIONAL AMPLIFIER
UPC4741 NEC-UPC4741 Datasheet
274Kb / 10P
   HIGH PERFORMANCE QUAD OPERATIONAL AMPLIFIER????
logo
Renesas Technology Corp
PC3403 RENESAS-PC3403_15 Datasheet
310Kb / 10P
   HIGH PERFORMANCE QUAD OPERATIONAL AMPLIFIER
logo
Sanyo Semicon Device
LA6324N SANYO-LA6324N Datasheet
113Kb / 5P
   High-Performance Quad Operational Amplifier
LA6324N SANYO-LA6324N_12 Datasheet
110Kb / 5P
   High-Performance Quad Operational Amplifier
LA6324NJM SANYO-LA6324NJM Datasheet
187Kb / 5P
   High-Performance Quad Operational Amplifier
logo
ON Semiconductor
LA6324N ONSEMI-LA6324N Datasheet
128Kb / 5P
   High-Performance Quad Operational Amplifier
August, 2013
logo
STMicroelectronics
TS274 STMICROELECTRONICS-TS274_08 Datasheet
158Kb / 14P
   High performance CMOS quad operational amplifier
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11


Datasheet Descarga

Go To PDF Page


Enlace URL




Política de Privacidad
ALLDATASHEET.ES
¿ALLDATASHEET es útil para Ud.?  [ DONATE ] 

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Intercambio de Enlaces   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com