|
|
PDF EL4442CN Data sheet ( Hoja de datos )
| Número de pieza | EL4442CN | |
| Descripción | Multiplexed-Input Video Amplifiers | |
| Fabricantes | Elantec Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de EL4442CN (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
|
No Preview Available !
EL4421C 22C 41C 42C 43C 44C
Multiplexed-Input Video Amplifiers
Features
Unity or a 2-gain bandwidth of
80 MHz
70 dB off-channel isolation at
4 MHz
Directly drives high-impedance
or 75X loads
02% and 02 differential gain
and phase errors
8 ns switching time
k100 mV switching glitch
0 2% loaded gain error
Compatible with g3V to g15V
supplies
160 mW maximum dissipation at
g5V supplies
Ordering Information
Part No Temp Range Package Outline
EL4421CN b40 C to a85 C 8-Pin PDIP MDP0031
EL4421CS b40 C to a85 C 8-Pin SO MDP0027
EL4422CN b40 C to a85 C 8-Pin PDIP MDP0031
EL4422CS b40 C to a85 C 8-Pin SO MDP0027
EL4441CN b40 C to a85 C 14-Pin PDIP MDP0031
EL4441CS b40 C to a85 C 14-Pin SO MDP0027
EL4442CN b40 C to a85 C 14-Pin PDIP MDP0031
EL4442CS b40 C to a85 C 14-Pin SO MDP0027
EL4443CN b40 C to a85 C 14-Pin PDIP MDP0031
EL4443CS b40 C to a85 C 14-Pin SO MDP0027
EL4444CN b40 C to a85 C 14-Pin PDIP MDP0031
EL4444CS b40 C to a85 C 14-Pin SO MDP0027
General Description
The EL44XX family of video multiplexed-amplifiers offers a
very quick 8 ns switching time and low glitch along with very
low video distortion The amplifiers have good gain accuracy
even when driving low-impedance loads To save power the am-
plifiers do not require heavy loading to remain stable
The EL4421 and EL4422 are two-input multiplexed amplifiers
The -inputs of the input stages are wired together and the de-
vice can be used as a pin-compatible upgrade from the
MAX453
The EL4441 and EL4442 have four inputs also with common
feedback These may be used as upgrades of the MAX454
The EL4443 and EL4444 are also 4-input multiplexed amplifi-
ers but both positive and negative inputs are wired separately
A wide variety of gain- and phase-switching circuits can be built
using independent feedback paths for each channel
The EL4421 EL4441 and EL4443 are internally compensated
for unity-gain operation The EL4422 EL4442 and EL4444 are
compensated for gains of a2 or more especially useful for driv-
ing back-matched cables
The amplifiers have an operational temperature of b40 C to
a85 C and are packaged in plastic 8- and 14-pin DIP and 8- and
14-pin SO
The EL44XX multiplexed-amplifier family is fabricated with
Elantec’s proprietary complementary bipolar process which
gives excellent signal symmetry and is very rugged
Connection Diagrams
EL4421 EL4422
EL4441 EL4442
EL4443 EL4444
4421 – 1
Manufactured under U S Patent No 5 352 987
4421 – 2
4421 – 3
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
1994 Elantec Inc
1 page  
EL4421C 22C 41C 42C 43C 44C
Multiplexed-Input Video Amplifiers
Typical Performance Curves Contd
EL4421 EL4441 and EL4443
Frequency Response for Various Loads
VS e g5V AV e a1
EL4422 EL4442 and EL4444
Frequency Response for Various Loads
VS e g5V AV e a2
Frequency Response
for Various Loads
VS e g15V AV e a 1
4421 – 9
4421 – 10
EL4422 EL4442 and EL4444
Frequency Response for Various Loads
VS e g15V AV e a2
EL4443 Open-Loop Gain and
Phase vs Frequency
4421 – 11
EL4444 Open-Loop Gain and
Phase vs Frequency
4421 – 12
4421 – 13
5
4421 – 37
5 Page 
EL4421C 22C 41C 42C 43C 44C
Multiplexed-Input Video Amplifiers
Applications Information Contd
The logic input(s) and ground pin are shifted
2 5V above system ground to correctly bias the
mux-amp Of course all the signal inputs and
output will have to be shifted 2 5V above system
ground to ensure proper signal path biasing
A final caution the ground pin is also connected
to the IC’s substrate and frequency compensation
components The ground pin must be returned to
system ground by a short wire or nearby bypass
capacitor In figure 2 the 22 KX resistors also
serve to isolate the bypassed ground pin from the
a5V supply noise
Signal Amplitudes
Signal input and output voltages must be be-
tween (Vb)a2 5V and (Va)b2 5V to ensure
linearity Additionally the differential voltage on
any input stage must be limited to g6V to pre-
vent damage In unity-gain connections any in-
put could have g3V applied and the output
would be at g3V putting us at our 6V differen-
tial limit Higher-gain circuit applications divide
the output voltage and allow for larger outputs
For instance at a gain of a2 the maximum input
is again g3V and the output swing is g6V The
EL4443 or EL4444 can be wired for inverting
gain with even more amplitude possible
The output and positive inputs respond to over-
loading amplitudes correctly that is they simply
clamp and remain monotonic with increasing
ainput overdrive A condition exists however
where the binput of an active stage is overdriven
by large outputs This occurs mainly in unity-
gain connections and only happens for negative
inputs The overloaded input cannot control the
feedback loop correctly and the output can be-
come non-monotonic A typical scenario has the
circuit running on g5V supplies connected for
unity gain and the input is the maximum g3V
Negative input extremes can cause the output to
jump from b3V to around b2 3V This will nev-
er happen if the input is restricted to g2 5V
which is the guaranteed maximum input compli-
ance with g5V supplies and is not a problem
with greater supply voltages Connecting the
feedback network with a divider will prevent the
overloaded output voltage from being large
enough to overload the binput and monotonic
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet EL4442CN.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| EL4442CN | Multiplexed-Input Video Amplifiers | Elantec Semiconductor |
| EL4442CS | Multiplexed-Input Video Amplifiers | Elantec Semiconductor |
| 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 |