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參數資料
| 型號： | EL4095 |
| 英文描述： | Video Gain Control/Fader/Multiplexer |
| 中文描述： | 視頻增益控制/前后/復用器 |
| 文件頁數： | 10/24頁 |
| 文件大?。?/td> | 457K |
| 代理商： | EL4095 |
EL4095C
Video Gain ControlFaderMultiplexer
Applications Information
Contd
The EL4095 is connected as a unity-gain fader
with an LRC peaking network connected to the
A-input and an RC rolloff network connected to
the B-input The plot shows the range of peaking
controlled by the VGAIN input This circuit
would be useful for flattening the frequency re-
sponse of a system or for providing equalization
ahead of a lossy transmission line
Noise
The electrical noise of the EL4095 has two com-
ponents the voltage noise in series with aVIN is
5nV
0Hz wideband and there is a current noise
injected into bVIN of 35 pA
0Hz
The
output
noise will be
Vn out e
0 (A
V Vn input)
2 a (In input RF)2
and the input-referred noise is
Vn input-referred e
0 (V
n input)
2 a (In input RF AV)2
where AV is the fed-back gain of the EL4095
Here is a plot of input-referred noise vs AV
Input-Referred Noise vs Closed-Loop Gain
4095 – 35
Thus for a gain of three or more the fader has a
noise as good as an op-amp The only trade-off is
that the dynamic range of the input is reduced by
the gain due to the nonlinearity caused by
gained-up output signals
Power Dissipation
Peak die temperature must not exceed 150 C
This allows 75 C internal temperature rise for a
75 C ambient The EL4095 in the 14-pin PDIP
package has a thermal resistance of 65 CW and
can thus dissipate 115W at a 75 C ambient tem-
perature The device draws 20 mA maximum
supply current only 600 mW at g15V supplies
and the circuit has no dissipation problems in
this package
The
SO-14
surface-mount
package
has
a
105 CW thermal resistance with the EL4095
and only 714 mW can be dissipated at 75 C ambi-
ent temperature The EL4095 thus can be operat-
ed with g15V supplies at 75 C but additional
dissipation caused by heavy loads must be con-
sidered If this is a problem the supplies should
be reduced to g5V to g12V levels
The output will survive momentary short-cir-
cuits to ground but the large available current
will overheat the die and also potentially destroy
the circuit’s metal traces The EL4095 is reliable
within its maximum average output currents and
operating temperatures
EL4095C Macromodel
This macromodel is offered to allow simulation of
general EL4095 behavior
We have included
these characteristics
Small-signal frequency response
Signal path DC distoritons
Output loading effects
VGAIN I-V characteristics
Input impedance
VGAIN overdrive recovery
Off-channel feedthrough
delay
Output impedance over
100% gain error
frequency
FORCE operation
b
VIN characteristics and
sensitivity to parasitic
capacitance
These will give a good range of results of various
operating conditions but the macromodel does
not behave identically as the circuit in these ar-
eas
Temperature effects
Manufacturing tolerances
Signal overload effects
Supply voltage effects
Signal and VG operating range
Slewrate limitations
Current-limit
Noise
Video and high-frequency
Power supply interactions
distortions
Glitch and delay from
FORCE inputs
18
相關PDF資料 |
PDF描述 |
|---|---|
| EL4095CN | FOIL RESISTOR, 500, .1% |
| EL4095CS | Video Gain Control/Fader/Multiplexer |
| EL41 | EL41 |
| EL4331C | Triple 2:1 Mux-Amp AV = 1 |
| EL4331CS | Triple 2:1 Mux-Amp AV = 1 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| EL4095C | 制造商:ELANTEC 制造商全稱:ELANTEC 功能描述:Video Gain Control/Fader/Multiplexer |
| EL4095CN | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Video Gain Control/Fader/Multiplexer |
| EL4095CS | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Video Gain Control/Fader/Multiplexer |
| EL40A128S5L6X3PR | 制造商:Avago Technologies 功能描述:INCREMENTAL ENCODER - Bulk |
| EL40PO-30MA-AD24-00415UL | 制造商:Fuji Electric 功能描述: |
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