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PDF EL8203 Data sheet ( Hoja de datos )

Número de pieza EL8203
Descripción (EL8202 - EL8403) 500MHz Rail-to-Rail Amplifiers
Fabricantes Intersil Corporation 
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®
Data Sheet
EL8202, EL8203, EL8403
April 26, 2006
FN7106.2
500MHz Rail-to-Rail Amplifiers
The EL8202, EL8203, and EL8403 represent rail-to-rail
amplifiers with a -3dB bandwidth of 500MHz and slew rate of
600V/µs. Running off a very low supply current of 5.6mA per
channel, the EL8202, EL8203, and EL8403 also feature
inputs that go to 0.15V below the VS- rail. The EL8202 and
EL8203 are dual channel amplifiers. The EL8403 is a quad
channel amplifier.
The EL8202 includes a fast-acting disable/power-down
circuit. With a 25ns disable and a 200ns enable, the EL8202
is ideal for multiplexing applications.
The EL8202, EL8203, and EL8403 are designed for a
number of general purpose video, communication,
instrumentation, and industrial applications. The EL8202 is
available in a 10 Ld MSOP package, the EL8203 in 8 Ld SO
and 8 Ld MSOP packages, and the EL8403 in 14 Ld SO and
16 Ld QSOP packages. All are specified for operation over
the -40°C to +85°C temperature range.
Features
• 500MHz -3dB bandwidth
• 600V/µs slew rate
• Low supply current = 5.6mA per channel
• Supplies from 3V to 5.5V
• Rail-to-rail output
• Input to 0.15V below VS-
• Fast 25ns disable (EL8202 only)
• Low cost
• Pb-free plus anneal available (RoHS compliant)
Applications
• Video amplifiers
• Portable/hand-held products
• Communications devices
Ordering Information
www.DataSheet4U.com
PART
NUMBER
PART TAPE &
MARKING REEL
PACKAGE
PKG.
DWG. #
EL8202IY
m
- 10 Ld MSOP MDP0043
EL8202IY-T7 m
7” 10 Ld MSOP MDP0043
EL8202IY-T13 m
13” 10 Ld MSOP MDP0043
EL8202IYZ
(See Note)
BAPAA
- 10 Ld MSOP MDP0043
(Pb-free)
EL8202IYZ-T7 BAPAA
(See Note)
7” 10 Ld MSOP MDP0043
(Pb-free)
EL8202IYZ-T13 BAPAA
(See Note)
13” 10 Ld MSOP MDP0043
(Pb-free)
EL8203IS
8203IS
- 8 Ld SO
MDP0027
EL8203IS-T7 8203IS
7” 8 Ld SO
MDP0027
EL8203IS-T13 8203IS
13” 8 Ld SO
MDP0027
EL8203ISZ
(See Note)
8203ISZ
- 8 Ld SO
(Pb-free)
MDP0027
EL8203ISZ-T7 8203ISZ
(See Note)
7” 8 Ld SO
(Pb-free)
MDP0027
EL8203ISZ-T13 8203ISZ
(See Note)
13” 8 Ld SO
(Pb-free)
MDP0027
EL8203IY
BJAAA
- 8 Ld MSOP MDP0043
EL8203IY-T7 BJAAA
7” 8 Ld MSOP MDP0043
EL8203IY-T13 BJAAA
13” 8 Ld MSOP MDP0043
Ordering Information (Continued)
PART
NUMBER
PART TAPE &
PKG.
MARKING REEL PACKAGE DWG. #
EL8403IS
8403IS
- 14 Ld SO MDP0027
EL8403IS-T7 8403IS
7” 14 Ld SO MDP0027
EL8403IS-T13 8403IS
13” 14 Ld SO MDP0027
EL8403ISZ
(See Note)
8403ISZ
- 14 Ld SO
(Pb-free)
MDP0027
EL8403ISZ-T7 8403ISZ
(See Note)
7” 14 Ld SO
(Pb-free)
MDP0027
EL8403ISZ-T13 8403ISZ
(See Note)
13” 14 Ld SO
(Pb-free)
MDP0027
EL8403IU
8403IU
- 16 Ld QSOP MDP0040
EL8403IU-T7 8403IU
7” 16 Ld QSOP MDP0040
EL8403IU-T13 8403IU
13” 16 Ld QSOP MDP0040
EL8403IUZ
(See Note)
8403IUZ
- 16 Ld QSOP MDP0040
(Pb-free)
EL8403IUZ-T7 8403IUZ
(See Note)
7” 16 Ld QSOP MDP0040
(Pb-free)
EL8403IUZ-T13 8403IUZ
(See Note)
13” 16 Ld QSOP MDP0040
(Pb-free)
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100% matte
tin plate termination finish, which are RoHS compliant and compatible
with both SnPb and Pb-free soldering operations. Intersil Pb-free
products are MSL classified at Pb-free peak reflow temperatures that
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2003, 2006. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.

1 page




EL8203 pdf
Typical Performance Curves
EL8202, EL8203, EL8403
5
4
VS=5V
AV=1
3 RL=1k
2 CL=2.5pF
1
0
-1
-2
-3
-4
-5
1M
VOP-P=200mV
VOP-P=1V
VOP-P=2V
10M
100M
FREQUENCY (Hz)
1G
FIGURE 1. FREQUENCY RESPONSE FOR VARIOUS OUTPUT
VOLTAGE LEVELS
5
3
RF=RG=1k
RF=RG=2k
1
-1 RF=RG=500
VS=5V
-3 AV=2
RL=1k
CL=2.5pF
-5
100K
1M
10M
100M
FREQUENCY (Hz)
1G
FIGURE 2. SMALL SIGNAL FREQUENCY RESPONSE
vs RF AND RG
5
4 VS=5V
3
CL=2.5pF
RL=1k
2
1
AV=2
0
-1
-2
AV=5
-3 AV=10
-4
-5
1M
10M
100M
FREQUENCY (Hz)
AV=1
1G
FIGURE 3. SMALL SIGNAL FREQUENCY RESPONSE FOR
VARIOUS NON-INVERTING GAINS
4
VS=5V
CL=2.5pF
2 RL=1k
RF=1k
0
AV=-5
-2
AV=-1
-4 AV=-10
-6
100K
1M
10M
100M
FREQUENCY (Hz)
1G
FIGURE 4. SMALL SIGNAL FREQUENCY RESPONSE FOR
VARIOUS INVERTING GAINS
5
4
VS=5V
AV=1
3 CL=2.5pF
2
1
0
-1
-2
-3
-4
-5
1M
RL=100
RL=500
10M 100M
FREQUENCY (Hz)
RL=1k
1G
FIGURE 5. SMALL SIGNAL FREQUENCY RESPONSE FOR
VARIOUS NON-INVERTING GAINS
11
VS=5V
AV=2
9 CL=2.5pF
RF=RG=1k
7
RL=500
5 RL=1k,
150
3
1
100K
1M
10M
100M
FREQUENCY (Hz)
1G
FIGURE 6. SMALL SIGNAL FREQUENCY RESPONSE vs
VARIOUS RLOAD
5

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EL8203 arduino
EL8202, EL8203, EL8403
Choice of Feedback Resistor and Gain Bandwidth
Product
For applications that require a gain of +1, no feedback
resistor is required. Just short the output pin to the inverting
input pin. For gains greater than +1, the feedback resistor
forms a pole with the parasitic capacitance at the inverting
input. As this pole becomes smaller, the amplifier’s phase
margin is reduced. This causes ringing in the time domain
and peaking in the frequency domain. Therefore, RF has
some maximum value that should not be exceeded for
optimum performance. If a large value of RF must be used, a
small capacitor in the few pF range in parallel with RF can
help to reduce the ringing and peaking at the expense of
reducing the bandwidth.
As far as the output stage of the amplifier is concerned, the
output stage is also a gain stage with the load. RF and RG
appear in parallel with RL for gains other than +1. As this
combination gets smaller, the bandwidth falls off.
Consequently, RF also has a minimum value that should not
be exceeded for optimum performance. For gain of +1, RF=0
is optimum. For the gains other than +1, optimum response
is obtained with RF between 300to 1k.
The EL8202, EL8203 and EL8403 have a gain bandwidth
product of 200MHz. For gains 5, its bandwidth can be
predicted by the following equation:
Gain × BW = 200MHz
Video Performance
For good video performance, an amplifier is required to
maintain the same output impedance and the same
frequency response as DC levels are changed at the output.
This is especially difficult when driving a standard video load
of 150, because the change in output current with DC level.
Special circuitry has been incorporated in the EL8202,
EL8203 and EL8403 to reduce the variation of the output
impedance with the current output. This results in dG and dP
specifications of 0.01% and 0.01°, while driving 150at a
gain of 2. Driving high impedance loads would give a similar
or better dG and dP performance.
Driving Capacitive Loads and Cables
The EL8202, EL8203 and EL8403 can drive 5pF loads in
parallel with 1kwith less than 5dB of peaking at gain of +1.
If less peaking is desired in applications, a small series
resistor (usually between 5to 50) can be placed in series
with the output to eliminate most peaking. However, this will
reduce the gain slightly. If the gain setting is greater than 1,
the gain resistor RG can then be chosen to make up for any
gain loss which may be created by the additional series
resistor at the output.
When used as a cable driver, double termination is always
recommended for reflection-free performance. For those
applications, a back-termination series resistor at the
amplifier’s output will isolate the amplifier from the cable and
allow extensive capacitive drive. However, other applications
may have high capacitive loads without a back-termination
resistor. Again, a small series resistor at the output can help
to reduce peaking.
Disable/Power-Down
The EL8202 can be disabled and placed its output in a high
impedance state. The turn off time is about 25ns and the turn
on time is about 200ns. When disabled, the amplifier’s
supply current is reduced to 40µA typically, thereby
effectively eliminating the power consumption. The
amplifier’s power down can be controlled by standard TTL or
CMOS signal levels at the ENABLE pin. The applied logic
signal is relative to VS- pin. Letting the ENABLE pin float or
applying a signal that is less than 0.8V above VS- will enable
the amplifier. The amplifier will be disabled when the signal
at ENABLE pin is 2V above VS-.
Output Drive Capability
The EL8202, EL8203 and EL8403 do not have internal short
circuit protection circuitry. They have a typical short circuit
current of 80mA sourcing and 150mA sinking for the output
is connected to half way between the rails with a 10
resistor. If the output is shorted indefinitely, the power
dissipation could easily increase such that the part will be
destroyed. Maximum reliability is maintained if the output
current never exceeds ±40mA. This limit is set by the design
of the internal metal interconnections.
Power Dissipation
With the high output drive capability of the EL8202, EL8203
and EL8403. It is possible to exceed the 125°C absolute
maximum junction temperature under certain load current
conditions. Therefore, it is important to calculate the
maximum junction temperature for the application to
determine if the load conditions or package types need to be
modified for the amplifier to remain in the safe operating
area.
The maximum power dissipation allowed in a package is
determined according to:
PDMAX
=
T----J---M-----A----X-----–-----T----A---M-----A----X--
θJA
Where:
TJMAX = Maximum junction temperature
TAMAX = Maximum ambient temperature
θJA = Thermal resistance of the package
The maximum power dissipation actually produced by an IC
is the total quiescent supply current times the total power
supply voltage, plus the power in the IC due to the load, or:
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