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EL2386CN Schematic ( PDF Datasheet ) - Elantec Semiconductor

Teilenummer EL2386CN
Beschreibung 250 MHz Triple Current Feedback Amp w/Disable
Hersteller Elantec Semiconductor
Logo Elantec Semiconductor Logo 




Gesamt 16 Seiten
EL2386CN Datasheet, Funktion
EL2386C
250 MHz Triple Current Feedback Amp w Disable
Features
 Triple amplifier topology
 3 mA supply current (per
amplifier)
 250 MHz b3 dB bandwidth
 Low cost
 Fast disable
 Powers down to 0 mA
 Single- and dual-supply
operation down to g1 5V
 0 05% 0 05 Diff gain Diff
phase into 150X
 1200V ms slew rate
 Large output drive current
55 mA
 Available in single (EL2186C)
and dual (EL2286C) form
 Non-power down versions
available in single dual and quad
(EL2180C EL2280C EL2480C)
 Lower power EL2170C EL2176C
family also available
(1 mA 70 MHz) in single dual
and quad
Applications
 Low power battery applications
 HDSL amplifiers
 Video amplifiers
 Cable drivers
 RGB amplifiers
 Test equipment amplifiers
 Current to voltage converters
 Multiplexing
 Video broadcast equipment
Ordering Information
Part No Temp Range Package Outline
EL2386CN b40 C to a85 C 16-Pin PDIP MDP0031
EL2386CS b40 C to a85 C 16-Pin SOIC MDP0027
General Description
The EL2386C is a triple current-feedback operational amplifier
which achieves a b3 dB bandwidth of 250 MHz at a gain of a1
while consuming only 3 mA of supply current per amplifier It
will operate with dual supplies ranging from g1 5V to g6V or
from single supplies ranging from a3V to a12V The EL2386C
also includes a disable power-down feature which reduces cur-
rent consumption to 0 mA while placing the amplifier output in
a high impedance state In spite of its low supply current the
EL2386C can output 55 mA while swinging to g4V on g5V
supplies These attributes make the EL2386C an excellent
choice for low power and or low voltage cable-driver HDSL or
RGB applications
For Single and Dual applications consider the EL2186C
EL2286C For Single Dual and Quad applications without dis-
able consider the EL2180C EL2280C or EL2480C all in indus-
try standard pin outs The EL2180C also is available in the tiny
SOT-23 package which is 28% the size of an SO8 package For
lower power applications where speed is still a concern consider
the EL2170C EL2176C family which also comes in similar Sin-
gle Dual and Quad configurations The EL2170C EL2176C
family provides a b3 dB bandwidth of 70 MHz while consum-
ing 1 mA of supply current per amplifier
Connection Diagram
EL2386C SO P-DIP
Top View
2386-1
Manufactured under U S Patent No 5 418 495
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
1996 Elantec Inc






EL2386CN Datasheet, Funktion
EL2386C
250 MHz Triple Current Feedback Amp w Disable
Typical Performance Curves Contd
Voltage and Current
Noise vs Frequency
2nd and 3rd Harmonic
Distortion vs Frequency
Output Voltage
Swing vs Frequency
2386 – 13
b3 dB Bandwidth and Peaking
vs Supply Voltage for
Various Non-Inverting Gains
2386 – 14
b3 dB Bandwidth and Peaking
vs Supply Voltage for
Various Inverting Gains
2386 – 15
Output Voltage Swing
vs Supply Voltage
Supply Current vs
Supply Voltage
2386 – 16
2386 – 17
Common-Mode Input Range
vs Supply Voltage
Slew Rate vs
Supply Voltage
2386 – 18
2386 – 19
2386 – 20
6
2386 – 21

6 Page









EL2386CN pdf, datenblatt
EL2386C
250 MHz Triple Current Feedback Amp w Disable
Applications Information Contd
Figure 2
2386-40
VOUT Switching is complete in about 100 ns
Notice the outputs are tied directly together De-
coupling resistors at each output are not required
or advised when multiplexing
Power Dissipation
With the high output drive capability of the
EL2386C it is possible to exceed the 150 C Abso-
lute Maximum junction temperature under cer-
tain very high load current conditions Generally
speaking when RL falls below about 25X it is
important to calculate the maximum junction
temperature (TJmax) for the application to deter-
mine if power-supply voltages load conditions
or package type need to be modified for the
EL2386C to remain in the safe operating area
These parameters are calculated as follows
TJMAX e TMAX a (iJA n PDMAX)
where
1
TMAX e Maximum Ambient Temperature
iJA e Thermal Resistance of the Package
n e Number of Amplifiers in the Package
PDMAX e Maximum Power Dissipation of
Each Amplifier in the Package
PDMAX for each amplifier can be calculated as
follows
PDMAX e (2 VS ISMAX) a
(VS – VOUTMAX) (VOUTMAX RL)
where
2
VS e Supply Voltage
ISMAX e Maximum Supply Current of 1
Amplifier
VOUTMAX e Max Output Voltage of the
Application
RL e Load Resistance
12

12 Page





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