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PDF EL4453 Data sheet ( Hoja de datos )
| Número de pieza | EL4453 | |
| Descripción | Video Fader | |
| Fabricantes | Elantec Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de EL4453 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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EL4453C
Video Fader
Features
Complete two-input fader with
output amplifier uses no extra
components
80 MHz bandwidth
Fast fade control speed
Operates on g5V to g15V
supplies
l60 dB attenuation 5 MHz
Applications
Mixing two inputs
Picture-in-picture
Text overlay onto video
General gain control
Ordering Information
Part No Temp Range
Pkg
Outline
EL4453CN b40 C to a85 C 14-Pin P-DIP MDP0031
EL4453CS b40 C to a85 C 14-Lead SOIC MDP0027
General Description
The EL4453C is a complete fader subsystem It variably blends
two inputs together for such applications as video picture-in-
picture effects
The EL4453C operates on g5V to g15V supplies and has an
analog differential input range of g2V AC characteristics do
not change appreciably over the supply range
The circuit has an operational temperature of b40 C to a85 C
and is packaged in 14-pin P-DIP and SO-14
The EL4453C is fabricated with Elantec’s proprietary comple-
mentary bipolar process which gives excellent signal symmetry
and is free from latch up
Connection Diagram
4453 – 1
Note All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication however this data sheet cannot be a ‘‘controlled document’’ Current revisions if any to these
specifications are maintained at the factory and are available upon your request We recommend checking the revision level before finalization of your design documentation
1995 Elantec Inc
1 page  
Typical Performance Curves Contd
Frequency Response for
Different Gains VS e g5V
Input Common-Mode Rejection
Ratio vs Frequency
EL4453C
Video Fader
Input Voltage and Current
Noise vs Frequency
4453 – 5
VIN Differential Gain
and Phase Error vs Gain
4453 – 8
4453 – 11
VIN Differential Gain Error
vs Input Offset Voltage
for Gain e 100% 75% 50% and 25%
4453 – 14
VIN Differential Phase Error
vs Input Offset Voltage for Gain e
100% 75% 50% and 25% VS e g5V
4453 – 15
VIN Differential Phase Error
vs Input Offset Voltage for Gain e
100% 75% 50% and 25% VS e g12V
4453 – 16
5
4453 – 17
5 Page 
EL4453C
Video Fader
Power Supplies Contd
For instance the EL4453C draws a maximum of
x21 mA With light loading RPAR % and the
dissipation with g5V supplies is 210 mW The
maximum supply voltage that the device can run
on for a given PD and the other parameters is
VS maxe(PDaVO2 RPAR) (2ISaVO RPAR)
The maximum dissipation a package can offer is
PD max e (TD max b TA max) iJA
where TD max is the maximum die tempera-
ture 150 C for reliability less to retain
optimum electrical performace
TA max is the ambient temperature 70 C
for commercial and 85 C for industrial
range
iJA is the thermal resistance of the
mounted package obtained from data-
sheet dissipation curves
The more difficult case is the SO-14 package
With a maximum die temperature of 150 C and a
maximum ambient temperature of 70 C the 80 C
temperature rise and package thermal resistance
of 110 W gives a dissipation of 636 mW at 85 C
This allows g15V operation over the commercial
temperature range but higher ambient tempera-
ture or output loading may require lower supply
voltages
Output Loading
The output stage of the EL4453C is very power-
ful It typically can source 80 mA and sink
120 mA Of course this is too much current to
sustain and the part will eventually be destroyed
by excessive dissipation or by metal traces on the
die opening The metal traces are completely reli-
able while delivering the 30 mA continuous out-
put given in the Absolute Maximum Ratings ta-
ble in this data sheet or higher purely transient
currents
Gain changes only 0 2% from no load to 100X
load Heavy resistive loading will degrade fre-
quency response and video distortion for loads
k 100X
Capacitive loads will cause peaking in the fre-
quency response If capacitive loads must be driv-
en a small-valued series resistor can be used to
isolate it 12X to 51X should suffice A 22X series
resistor will limit peaking to 2 5 dB with even a
220 pF load
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet EL4453.PDF ] | |
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