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부품번호 | EL2082C 기능 |
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기능 | Current-Mode Multiplier | ||
제조업체 | Elantec | ||
로고 | |||
전체 16 페이지수
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
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
4
4페이지 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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7페이지 | |||
구 성 | 총 16 페이지수 | ||
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
EL2082 | Current-Mode Multiplier | Elantec |
EL2082C | Current-Mode Multiplier | Elantec |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |