EL4421C/22C/41C/42C/43C/44C
Multiplexed-Input Video Amplifiers
Features
a
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.
# Unity or
80 MHz
2-gain bandwidth of
# 70 dB off-channel isolation at
4 MHz
# Directly drives high-impedance
or 75X loads
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.
# .02% and .02 differential gain
and phase errors
§
# 8 ns switching time
k
#
100 mV switching glitch
The EL4441 and EL4442 have four inputs, also with common
feedback. These may be used as upgrades of the MAX454.
# 0.2% loaded gain error
# Compatible with 3V to 15V
supplies
g
g
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.
# 160 mW maximum dissipation at
g
5V supplies
Ordering Information
The EL4421, EL4441, and EL4443 are internally compensated
for unity-gain operation. The EL4422, EL4442, and EL4444 are
a
compensated for gains of 2 or more, especially useful for driv-
ing back-matched cables.
Part No. Temp. Range Package Outline
b
b
a
a
a
EL4421CN 40 C to 85 C 8-Pin PDIP MDP0031
§
§
§
EL4421CS 40 C to 85 C 8-Pin SO
§
MDP0027
b
EL4422CN 40 C to 85 C 8-Pin PDIP MDP0031
§
§
b
a
EL4422CS 40 C to 85 C 8-Pin SO
MDP0027
§
§
b
b
a
a
a
b
The amplifiers have an operational temperature of 40 C to
85 C and are packaged in plastic 8- and 14-pin DIP and 8- and
14-pin SO.
EL4441CN 40 C to 85 C 14-Pin PDIP MDP0031
§
§
§
§
EL4441CS 40 C to 85 C 14-Pin SO
§
MDP0027
a
§
b
EL4442CN 40 C to 85 C 14-Pin PDIP MDP0031
§
§
b
a
EL4442CS 40 C to 85 C 14-Pin SO
MDP0027
§
§
b
b
a
a
a
EL4443CN 40 C to 85 C 14-Pin PDIP MDP0031
§
§
§
The EL44XX multiplexed-amplifier family is fabricated with
Elantec’s proprietary complementary bipolar process which
gives excellent signal symmetry and is very rugged.
EL4443CS 40 C to 85 C 14-Pin SO
§
MDP0027
b
EL4444CN 40 C to 85 C 14-Pin PDIP MDP0031
§
§
b
a
EL4444CS 40 C to 85 C 14-Pin SO
MDP0027
§
§
Connection Diagrams
EL4421/EL4422
EL4441/EL4442
EL4443/EL4444
4421–1
4421–2
4421–3
Manufactured under U.S. Patent No. 5,352,987
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.