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EL2082C 데이터시트 PDF




Elantec에서 제조한 전자 부품 EL2082C은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 EL2082C 기능
기능 Current-Mode Multiplier
제조업체 Elantec
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EL2082C 데이터시트, 핀배열, 회로
EL2082C
Current-Mode Multiplier
Features
 Flexible inputs and outputs all
ground referred
 150 MHz large and small-signal
bandwidth
 46 dB of calibrated gain control
range
 70 dB isolation in disable mode
10 MHz
 0 15% diff gain and 0 05 diff
phase performance at NTSC
using application circuit
 Operates on g5V to g15V power
supplies
 Outputs may be paralleled to
function as a multiplexer
Applications
 Level adjust for video signals
 Video faders and mixers
 Signal routing multiplexers
 Variable active filters
 Video monitor contrast control
 AGC
 Receiver IF gain control
 Modulation demodulation
 General ‘‘cold’’ front-panel
control of AC signals
Ordering Information
Part No Temp Range Package Outline
EL2082CN 0 C to a75 C 8-Pin P-DIP MDP0031
EL2082CS 0 C to a75 C 8-Pin SO
MDP0027
General Description
The EL2082 is a general purpose variable gain control building
block built using an advanced proprietary complementary bi-
polar process It is a two-quandrant multiplier so that zero or
negative control voltages do not allow signal feedthrough and
very high attenuation is possible The EL2082 works in current
mode rather than voltage mode so that the input impedance is
low and the output impedance is high This allows very wide
bandwidth for both large and small signals
The IIN pin replicates the voltage present on the VIN pin there-
fore the VIN pin can be used to reject common-mode noise and
establish an input ground reference The gain control input is
calibrated to 1 mA mA signal gain for 1V of control voltage
The disable pin (E) is TTL-compatible and the output current
can comply with a wide range of output voltages
Because current signals rather than voltages are employed mul-
tiple inputs can be summed and many outputs wire-or’ed or
mixed
The EL2082 operates from a wide range of supplies and is avail-
able in standard 8-pin plastic DIP or 8-lead SO
Connection Diagram
8-Pin DIP SO
Top View
2082 – 1
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
1992 Elantec Inc




EL2082C pdf, 반도체, 판매, 대치품
EL2082C
Current-Mode Multiplier
Typical Performance Curves
Current Gain vs
Frequency for Different Gains
Current Gain
vs Frequency
Current Gain Flatness
Frequency Response in
Voltage Input Mode
Harmonic Distortion vs
Input Amplitude
Output Current Noise
vs Frequency
2082 – 2
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EL2082C 전자부품, 판매, 대치품
Typical Performance Curves
8-Pin Plastic DIP
Maximum Power Dissipation
vs Ambient Temperature
Contd
EL2082C
Current-Mode Multiplier
8-Lead SO
Maximum Power Dissipation
vs Ambient Temperature
2082 – 11
2082 – 12
Applications Information
The EL2082 is best thought of as a current-conveyor with variable current gain A current input to the
IIN pin will be replicated as a current driven out the IOUT pin with a gain controlled by VGAIN Thus
an input of 1 mA will produce an output current of 1 mA for VGAIN e 1V An input of 1 mA will
produce an output of 2 mA for VGAIN e 2V The useable VGAIN range is zero to a2V A negative level
on VGAIN even only b20 mV will yield very high signal attenuation
The EL2082 in Conjunction with Op-Amps
This resistor-load circuit shows a simple method of converting voltage signals to currents and vice
versa
 J  JGain e VGAIN
RL
1V RIN a95X
RF a RG
RG
EL2082 a Op-Amp
2082 – 13
RIN would typically be 1 kX for video level inputs or 10 kX for g10V instrumentation signals The
higher the value of RIN (the lower the input current) the lower the distortion levels of the EL2082 will
be An approximate expression of the nonlinearity of the EL2082 is
Nonlinearity (%) e 0 3 IIN (mA)2
Optimum input current level is a tradeoff between distortion and signal-to-noise-ratio The distortion
and input range do not change appreciably with VGAIN levels distortion is set by input currents alone
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관련 데이터시트

부품번호상세설명 및 기능제조사
EL2082

Current-Mode Multiplier

Elantec
Elantec
EL2082C

Current-Mode Multiplier

Elantec
Elantec

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