Elantec EL4422CN Multiplexed-input video amplifier Datasheet

Multiplexed-Input Video Amplifiers
Features
General Description
# 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
# k 100 mV switching glitch
# 0.2% loaded gain error
# Compatible with g 3V to g 15V
supplies
# 160 mW maximum dissipation at
g 5V supplies
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 amplifiers do not require heavy loading to remain stable.
Ordering Information
Part No.
Temp. Range
Package
Outline
Pin PDIP
Pin SO
Pin PDIP
Pin SO
MDP0031
MDP0027
MDP0031
MDP0027
The EL4421 and EL4422 are two-input multiplexed amplifiers.
The -inputs of the input stages are wired together and the device can be used as a pin-compatible upgrade from the
MAX453.
EL4421C/22C/41C/42C/43C/44C
EL4421C/22C/41C/42C/43C/44C
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 amplifiers, 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 a 2 or more, especially useful for driving back-matched cables.
EL4421CN
EL4421CS
EL4422CN
EL4422CS
40§ C to
40§ C to
40§ C to
40§ C to
a 85§ C 8
a 85§ C 8
a 85§ C 8
a 85§ C 8
EL4441CN
EL4441CS
EL4442CN
EL4442CS
40§ C to
40§ C to
40§ C to
40§ C to
a 85§ C 14
a 85§ C 14
a 85§ C 14
a 85§ C 14
Pin PDIP MDP0031
Pin SO
MDP0027
Pin PDIP MDP0031
Pin SO
MDP0027
The amplifiers have an operational temperature of 40§ C to
a 85§ C and are packaged in plastic 8- and 14-pin DIP and 8- and
14-pin SO.
EL4443CN
EL4443CS
EL4444CN
EL4444CS
40§ C to
40§ C to
40§ C to
40§ C to
a 85§ C 14
a 85§ C 14
a 85§ C 14
a 85§ C 14
Pin PDIP MDP0031
Pin SO
MDP0027
Pin PDIP MDP0031
Pin SO
MDP0027
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
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.
January 1996 Rev C
4421 1
EL4443/EL4444
EL4421C/22C/41C/42C/43C/44C
Multiplexed-Input Video Amplifiers
Absolute Maximum Ratings
Va
VS
VIN
DVIN
Positive Supply Voltage
V a to Vb Supply Voltage
Voltage at any Input or Feedback
Difference between Pairs of
Inputs or Feedback
VLOGIC
IIN
16.5V
33V
V a to Vb
IOUT
PD
6V
Voltage at A0 or A1
Current into any Input,
Feedback, or Logic Pin
Output Current
Maximum Power Dissipation
b 4V to 6V
4 mA
30 mA
See Curves
Important Note:
All parameters having Min/Max specifications are guaranteed. The Test Level column indicates the specific device testing actually
performed during production and Quality inspection. Elantec performs most electrical tests using modern high-speed automatic test
equipment, specifically the LTX77 Series system. Unless otherwise noted, all tests are pulsed tests, therefore TJ TC TA.
Test Level
I
II
III
IV
V
Test Procedure
100% production tested and QA sample tested per QA test plan QCX0002.
100% production tested at TA 25§ C and QA sample tested at TA 25§ C ,
TMAX and TMIN per QA test plan QCX0002.
QA sample tested per QA test plan QCX0002.
Parameter is guaranteed (but not tested) by Design and Characterization Data.
Parameter is typical value at TA 25§ C for information purposes only.
Open-Loop DC Electrical Characteristics
Parameter
VOS
IB
IFB
25§ C, RL
500X, unless otherwise specified
Description
Input Offset Voltage
Ê 21, Ê 41, and Ê 43
Ê 22, Ê 42, and Ê 44
Input Bias Current, Positive Inputs Only
of the Ê 21, Ê 22, Ê 41, Ê 42, and All Inputs of
the Ê 43 and Ê 44
Input Bias Currents of Common Feedback
b Ê 21 and Ê 22
b Ê 41 and Ê 42
Min
Typ
Max
Test
Level
Units
b9
b7
g3
g2
9
7
I
I
mV
b 12
b5
0
I
mA
b 24
b 48
b 10
b 20
0
0
I
I
mA
mA
IOS
Input Offset Currents of the Ê 43 and Ê 44
60
350
I
nA
EG
Gain Error of the Ê 21 and Ê 41 and Ê 43
(Note 1)
Ê 22, Ê 42 and Ê 44
0.2
0.1
0.6
0.6
I
I
%
V/V
AVOL
Open-Loop Gain
(Note 1)
VIN
EL4443
EL4444
350
500
500
750
I
I
V/V
V/V
Input Signal Range, EL4421 and EL4441
(Note 2)
g 2.5
g3
I
V
CMRR
Common-Mode Rejection Ratio, EL4443
and EL4444
70
90
I
dB
PSRR
Power Supply Rejection Ratio
Vs from g 5V to g 15V
60
70
I
dB
2
TD is 3 3in
Power supplies at g 5V, TA
EL4421C/22C/41C/42C/43C/44C
Multiplexed-Input Video Amplifiers
Open-Loop DC Electrical Characteristics Ð Contd.
25§ C
Parameter
Test
Level
Units
g3
I
V
g 2.5
g 3.5
I
V
g 40
g 80
I
mA
70
55
80
64
I
I
dB
dB
b 16
b8
0
I
mA
2.0
I
V
14
16
I
mA
Description
Min
Typ
CMIR
Common-Mode Input Range
(Note 3) EL4443 and EL4444
g 2.5
VOUT
Output Swing
ISC
Output Short-Circuit Current
FT
Unselected Channel Feedthrough ’21, ’41, ’43
Attenuation, (Note 1)
’22, ’42, ’44
ILOGIC
Input Current at A0 and A1
with Input
0V and 5V
VLOGIC
Logic Valid High and Low Input Levels
IS
Supply Current
EL4421 and EL4422
EL4441, EL4442, EL4443, and EL4444
Max
0.8
11
13
TD is 2 2in
Power supplies at g 5V, TA
Note 1: The Ê 21, Ê 41, and Ê 43 devices are connected for unity-gain operation with 75X load and an input span of g 1V. The Ê 22, Ê 42,
RG
270X.
and Ê 44 devices are connected for a gain of a 2 with a 150X load and a g 1V input span with RF
Note 2: The Ê 21 and Ê 41 devices are connected for unity gain with a g 3V input span while the output swing is measured.
Note 3: CMIR is assured by passing the CMRR test at input voltage extremes.
Closed-Loop AC Electrical Characteristics
a 1 and RL
Power supplies at g 5V. TA
25§ C, for EL4421, EL4441, and EL4443 AV
a 2 and RL
150X with RF
RG
270X and CF
3 pF; for all CL
15 pF
AV
Description
Min
Typ
Test
Level
Units
V
V
MHz
MHz
BW b 3 dB
b 3 dB Small-Signal Bandwidth, EL4421, ’41, ’43
EL4422, ’42, ’44
BW g 0.1 dB
0.1 dB Flatness Bandwidth
10
V
MHz
Peaking
Frequency Response Peaking
0.5
V
dB
SR
Slewrate, VOUT between b2.5V and a 2.5V, VS
EL4421, EL4441, EL4443
EL4422, EL4442, EL4444
200
240
I
I
V/msec
V/msec
18
14
V
V
nV/rt-hz
nV/rt-hz
0.01
0.10
0.02
0.11
V
V
V
V
%
%
%
%
Vn
dG
80
65
Max
g 12V
Input-Referred Noise Voltage Density
EL4421, EL4441, EL4443
EL4422, EL4442, EL4444
Differential Gain Error, VOFFSET between b0.7V and a 0.7V
g 12V)
EL4421, EL4441, EL4443 (VS
g 5V)
EL4421, EL4441, EL4443 (VS
g 12V)
EL4422, EL4442, EL4444 (VS
g 5V)
EL4422, EL4442, EL4444 (VS
3
150
180
TD is 2 6in
Parameter
500X, for EL4422, EL4442, and EL4444
EL4421C/22C/41C/42C/43C/44C
Multiplexed-Input Video Amplifiers
Closed-Loop AC Electrical Characteristics
Parameter
dO
TMUX
VGLITCH
ISO
Description
Min
Typ
Max
Test
Level
Units
Differential Phase Error, VOFFSET between b0.7V and a 0.7V
g 12V)
EL4421, EL4441, EL4443 (VS
g 5V)
EL4421, EL4441, EL4443 (VS
g 12V)
EL4422, EL4442, EL4444 (VS
g 5V)
EL4422, EL4442, EL4444 (VS
0.01
0.1
0.02
0.15
V
V
V
V
§
§
§
§
Multiplex Delay Time, Logic Threshold to 50% Signal Change
EL4421, ’22
EL4441, ’42, ’43, ’44
8
12
V
V
nsec
nsec
Peak Multiplex Glitch
EL4421, ’22
EL4441, ’42, ’43, ’44
70
100
V
V
mV
mV
Channel Off Isolation at 3.58 MHz (See Text)
EL4421, EL4441, EL4443
EL4422, EL4442, EL4444
76
63
V
V
dB
dB
Typical Performance Curves
EL4421, EL4441, and EL4443
Small-Signal Transient Response
g 5V, RL
VS
500X
EL4421, EL4441, and EL4443
Large-Signal Response
g 12V, RL
VS
500X
4421 5
4421 6
EL4421, EL4441, and EL4443
Frequency Response for
Various Gains
EL4422, EL4442, and EL4444
Frequency Response for
Various Gains
4421 7
4421 8
4
TD is 2 4in
a 1 and RL
Power supplies at g 5V. TA
25§ C, for EL4421, EL4441, and EL4443 AV
500X, for EL4422, EL4442, and EL4444
a 2 and RL
150X with RF
RG
270X and CF
3 pF; for all CL
15 pF Ð Contd.
AV
EL4421C/22C/41C/42C/43C/44C
Multiplexed-Input Video Amplifiers
Typical Performance Curves Ð Contd.
EL4421, EL4441, and EL4443
Frequency Response for Various Loads
a1
g 5V, AV
VS
EL4422, EL4442, and EL4444
Frequency Response for Various Loads
a2
g 5V, AV
VS
4421 10
Frequency Response
for Various Loads
a 1
g 15V, AV
VS
4421 9
EL4422, EL4442, and EL4444
Frequency Response for Various Loads
a2
g 15V, AV
VS
4421 11
4421 12
EL4443 Open-Loop Gain and
Phase vs Frequency
EL4444 Open-Loop Gain and
Phase vs Frequency
4421 37
4421 13
5
EL4421C/22C/41C/42C/43C/44C
Multiplexed-Input Video Amplifiers
Typical Performance Curves Ð Contd.
EL4421, EL4441, and EL4443
3 dB Bandwidth, Slewrate,
and Peaking vs Supply Voltage
EL4422, EL4442, and EL4444
3 dB Bandwidth, Slewrate,
and Peaking vs Supply Voltage
4421 14
4421 15
EL4421, EL4441, and EL4443
Bandwidth, Slewrate, and Peaking
vs Temperature, AV e a 1, RL e 500X
EL4422, EL4442, and EL4444 Bandwidth,
Slewrate, and Peaking vs Temperature,
AV e a 2, RL e 150X, RI e RG e 270X, CF e 3 pF
4421 16
4421 17
EL4421, EL4441, and EL4443
3 dB Bandwidth and Gain Error
vs Load Resistance
Input Noise vs Frequency
4421 18
4421 19
6
EL4421C/22C/41C/42C/43C/44C
Multiplexed-Input Video Amplifiers
Typical Performance Curves Ð Contd.
EL4421, EL4441, and EL4443 Differential Gain
and Phase Errors, vs Input Offset,
AV e a 1, RL e 500X, F e 3.58 MHz
EL4422, EL4442, and EL4444 Differential Gain
and Phase Error vs Input Offset;
AV e a 2, RL e 150X, F e 3.58 MHz
4421 21
4421 20
EL4421, EL4441, and EL4443 Differential Gain
and Phase Error vs Load Resistance;
AV e a 1, F e 3.58 MHz, VOFFSET e 0
0.714V
EL4443 and EL4444 Open Loop Gain
vs Load Resistance
x
4421 23
4421 22
Change in VOS, AV, and IB
with Supply Voltage
Change in VOS, IB,
and AV vs Temperature
4421 24
4421 25
7
EL4421C/22C/41C/42C/43C/44C
Multiplexed-Input Video Amplifiers
Typical Performance Curves Ð Contd.
Switching Waveforms
Switching from Grounded Input
to Uncorrelated Sinewave and Back
Channel-to-Channel
Switching Glitch
4421 27
4421 26
EL4421, EL4441, and EL4443
Unselected Channel
Feedthrough vs Frequency
EL4422, EL4442, and EL4444
Unselected Channel
Feedthrough vs Frequency
4421 28
4421 29
EL4443 and EL4444
Input and Output Range vs
Supply Voltage (Output Unloaded)
4421 30
8
EL4421C/22C/41C/42C/43C/44C
Multiplexed-Input Video Amplifiers
Typical Performance Curves Ð Contd.
Supply Current vs
Supply Voltage
8-Pin Package
Power Dissipation vs
Ambient Temperature
Supply Current vs
Temperature
4421 31
14-Pin Package
Power Dissipation vs
Ambient Temperature
4421 33
4421 32
4421 34
Applications Information
EL4443 and EL4444, on the other hand, have all
a inputs and inputs brought out separately so
that the input stage can be wired for independent
gains and gain polarities with separate feedback
networks.
General Description
The EL44XX family of video mux-amps are composed of two or four input stages whose inputs
are selected and control an output stage. One of
the inputs is active at a time and the circuit behaves as a traditional voltage-feedback op-amp
for that input, rejecting signals present at the unselected inputs. Selection is controlled by one or
two logic inputs.
The EL4421, EL4441, and EL4443 are compensated for unity-gain stability, while the EL4422,
EL4442, and EL4444 are compensated for a fedback gain of a 2, ideal for driving back-terminated cables or maintaining bandwidth at higher
fed-back gains.
The EL4421, EL4422, EL4441, and EL4442 have
all inputs wired in parallel, allowing a single
feedback network to set the gain of all inputs.
These devices are wired for positive gains. The
9
EL4421C/22C/41C/42C/43C/44C
Multiplexed-Input Video Amplifiers
Applications Information Ð Contd.
CMOS drivers. The ground pin is the logic
threshold biasing reference. The simplified input
circuitry is shown below:
Switching Characteristics
The logic inputs work with standard TTL levels
of 0.8V or less for a logic 0 and 2.0V or more for a
logic 1, making them compatible for TTL and
4421 35
Figure 1. Simplified Logic Input Circuitry
The ground pin draws a maximum DC current of
6 mA, and may be biased anywhere between
(V ) a 2.5V and (V a ) 3.5V. The logic inputs
may range from (V ) a 2.5V to V a , and are additionally required to be no more negative than
V(Gnd pin) 4V and no more positive than
V(Gnd pin) a 6V.
For example, within these constraints, we can
power the EL44XX’s from a 5V and a 12V without a negative supply by using these connections:
4421 36
Figure 2. Using the EL44XX Mux Amps with a 5V and a 12V Supplies
10
EL4421C/22C/41C/42C/43C/44C
Multiplexed-Input Video Amplifiers
Applications Information Ð Contd.
is again g 3V and the output swing is g 6V. The
EL4443 or EL4444 can be wired for inverting
gain with even more amplitude possible.
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.
The output and positive inputs respond to overloading amplitudes correctly; that is, they simply
clamp and remain monotonic with increasing
a input overdrive. A condition exists, however,
where the input of an active stage is overdriven
by large outputs. This occurs mainly in unitygain connections, and only happens for negative
inputs. The overloaded input cannot control the
feedback loop correctly and the output can become non-monotonic. A typical scenario has the
circuit running on g 5V supplies, connected for
unity gain, and the input is the maximum g 3V.
Negative input extremes can cause the output to
jump from 3V to around 2.3V. This will never happen if the input is restricted to g 2.5V,
which is the guaranteed maximum input compliance with g 5V 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 input and monotonic
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
a 5V supply noise.
Signal Amplitudes
Signal input and output voltages must be between (V ) a 2.5V and (V a ) 2.5V to ensure
linearity. Additionally, the differential voltage on
any input stage must be limited to g 6V to prevent damage. In unity-gain connections, any input could have g 3V applied and the output
would be at g 3V, putting us at our 6V differential limit. Higher-gain circuit applications divide
the output voltage and allow for larger outputs.
For instance, at a gain of a 2 the maximum input
11
EL4421C/22C/41C/42C/43C/44C
Multiplexed-Input Video Amplifiers
Applications Information Ð Contd.
behavior is assured. In any event, keeping signals
within guaranteed compliance limits will assure
freedom from overload problems.
The maximum dissipation a package support is
PD, max e (TD, max-TA, max)/RTH
Where TD, max is the maximum die temperature, 150§ C for reliability, less to retain optimum electrical performance
TA, max is the ambient temperature,
70§ for commercial and 85§ C for industrial range
RTH is the thermal resistance of the
mounted package, obtained from data
sheet dissipation curves
The input and output ranges are substantially
constant with temperature.
Power Supplies
The mux-amps work well on any supplies from
g 3V to g 15V. The supplies may be of different
voltages as long as the requirements of the Gnd
pin are observed (see the Switching Characteristics section for a discussion). The supplies should
be bypassed close to the device with short leads.
4.7 mF tantalum capacitors are very good, and no
smaller bypasses need be placed in parallel. Capacitors as small as 0.01 mF can be used if small
load currents flow.
The most difficult case is the SO-8 package. With
a maximum die temperature of 150§ C and a maximum ambient temperature of 85§ , the 65§ temperature rise and package thermal resistance of
170§ /W gives a maximum dissipation of 382 mW.
This allows a maximum supply voltage of g 9.2V
for the EL4422 operated in our example. If the
% ),
EL4421 were driving a light load (RPAR
it could operate on g 15V supplies at a 70§ maximum ambient.
Single-polarity supplies, such as a 12V with
a 5V can be used as described in the Switching
Characteristics section. The inputs and outputs
will have to have their levels shifted above
ground to accommodate the lack of negative supply.
x
The EL4441 through EL4444 can operate on
g 12V supplies in the SO package, and all parts
can be powered by g 15V supplies in DIP packages.
The dissipation of the mux-amps increases with
power supply voltage, and this must be compatible with the package chosen. This is a close estimate for the dissipation of a circuit:
Output Loading
The output stage of the mux-amp is very powerful, and 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 reliable while delivering the 30 mA continuous output given in
the Absolute Maximum Ratings table in this
data sheet, or higher purely transient currents.
PD e 2VS c Is,max a (VS – VO) c VO/RPAR
Where
Is, max is the maximum supply current
VS is the g supply voltage (assumed equal)
VO if the output voltage
RPAR is the parallel of all resistors
loading the output
Gain or gain accuracy degrades only 10% from
no load to 100X load. Heavy resistive loading will
degrade frequency response and video distortion
only a bit, becoming noticeably worse for loads
k 100X.
For instance, the EL4422 draws a maximum of
14 mA and we might require a 2V peak output
into 150X and a 270X a 270X feedback divider.
The RPAR is 117X. The dissipation with g 5V
supplies is 191 mW. The maximum Supply voltage that the device can run on for a given PD and
the other parameter is
VS, max e (PD a VO2/RPAR)/2Is a VO/RPAR)
12
TD is 0 5in
EL4421C/22C/41C/42C/43C/44C
Multiplexed-Input Video Amplifiers
Applications Information Ð Contd.
Capacitive loads will cause peaking in the frequency response. If capacitive loads must be driven, 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.
The other major concern about the divider concerns unselected-channel crosstalk. The differential input impedance of each input stage is
around 200 KX. The unselected input’s signal
sources thus drive current through that input impedance into the feedback divider, inducing an
unwanted output. The gain from unselected input to output, the crosstalk attenuation, if RF/
RIN. In unity-gain connection the feedback resistor is 0X and very little crosstalk is induced. For
a gain of a 2, the crosstalk is about 60 dB.
Input Connections
The input transistors can be driven from resistive
and capacitive sources but are capable of oscillation when presented with an inductive input. It
takes about 80 nH of series inductance to make
the inputs actually oscillate, equivalent to four
inches of unshielded wiring or about 6× of unterminated input transmission line. The oscillation
has a characteristic frequency of 500 MHz.
Feedthrough Attenuation
The channels have different crosstalk levels with
different inputs. Here is the typical attenuation
for all combinations of inputs for the mux-amps
at 3.58 MHz:
Often simply placing one’s finger (via a metal
probe) or an oscilloscope probe on the input will
kill the oscillation. Normal high-frequency construction obviates any such problems, where the
input source is reasonably close to the mux-amp
input. If this is not possible, one can insert series
resistors of around 51X to de-Q the inputs.
Feedthrough of EL4441 and EL4443 at 3.58 MHz
00
Select
Inputs,
A1A0
Feedback Connections
A feedback divider is used to increase circuit
gain, and some precautions should be observed.
The first is that parasitic capacitance at the input will add phase lag to the feedback path and
increase frequency response peaking or even
cause oscillation. One solution is to choose feedback resistors whose parallel value is low. The
pole frequency of the feedback network should be
maintained above at least 200 MHz. For a 3 pF
parasitic, this requires that the feedback divider
have less than 265X impedance, equivalent to
two 510X resistors when a gain of a 2 is desired.
Alternatively, a small capacitor across RF can be
used to create more of a frequency-compensated
divider. The value of the capacitor should match
the parasitic capacitance at the input. It is also
practical to place small capacitors across both the
feedback resistors (whose values maintain the desired gain) to swamp out parasitics. For instance,
two 10 pF capacitors across equal divider resistors will dominate parasitic effects and allow a
higher divider resistance.
In1
In2
In3
In4
b 90 dB
b 92 dB
Selected
b 77 dB
01
b 80 dB
Selected
b 77 dB
b 90 dB
10
b 101 dB
b 76 dB
Selected
b 66 dB
11
b 96 dB
b 84 dB
b 66 dB
Selected
Channel Select
Input, A0
In1
In2
0
Selected
b 88 dB
1
b 93 dB
Selected
Switching Glitches
The output of the mux-amps produces a small
‘‘glitch’’ voltage in response to a logic input
change. A peak amplitude of only about 90 mV
occurs, and the transient settles out in 20 ns. The
glitch does not change amplitude with different
gain settings.
With the four-input multiplexers, when two logic
inputs are simultaneously changed, the glitch
amplitude doubles. The increase can be a avoided
by keeping transitions at least 6 ns apart. This
can be accomplished by inserting one gate delay
in one of the two logic inputs when they are truly
synchronous.
13
TD is 0 5in
Feedthrough of EL4421 at 3.58 MHz
14
BLANK
15
BLANK
EL4421C/22C/41C/42C/43C/44C
EL4421C/22C/41C/42C/43C/44C
Multiplexed-Input Video Amplifiers
General Disclaimer
Specifications contained in this data sheet are in effect as of the publication date shown. Elantec, Inc. reserves the right to make changes
in the circuitry or specifications contained herein at any time without notice. Elantec, Inc. assumes no responsibility for the use of any
circuits described herein and makes no representations that they are free from patent infringement.
January 1996 Rev C
WARNING
Life Support Policy
Elantec, Inc. products are not authorized for and should not be
used within Life Support Systems without the specific written
consent of Elantec, Inc. Life Support systems are equipment intended to support or sustain life and whose failure to perform
when properly used in accordance with instructions provided can
be reasonably expected to result in significant personal injury or
death. Users contemplating application of Elantec, Inc. products
in Life Support Systems are requested to contact Elantec, Inc.
factory headquarters to establish suitable terms & conditions for
these applications. Elantec, Inc.’s warranty is limited to replacement of defective components and does not cover injury to persons or property or other consequential damages.
Elantec, Inc.
1996 Tarob Court
Milpitas, CA 95035
Telephone: (408) 945-1323
(800) 333-6314
Fax: (408) 945-9305
European Office: 44-71-482-4596
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Printed in U.S.A.