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EL2140C View Datasheet(PDF) - Elantec -> Intersil

Part NameDescriptionManufacturer
EL2140C 150 MHz Differential Twisted Pair Driver Elantec
Elantec -> Intersil Elantec
EL2140C Datasheet PDF : 12 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
EL2140C 2141C
150 MHz Differential Twisted Pair Driver
Applications Information Contd
H3 The third harmonic should be the dominant
harmonic and is primarily affected by output
load current which of course is unavoidable
However this should encourage the user not to
waste current in the gain setting resistors and to
use values that consume only a small proportion
of the load current so long as peaking does not
occur The more load current the worse the dis-
tortion but depending on the frequency it may
be possible to reduce the amplifier gain so that
there is more internal gain left to cancel out any
distortion
Typical Applications Circuits
H5 The fifth harmonic should always be below
the third and will not become significant until
heavy load currents are drawn Generally it
should respond to the same efforts applied to re-
ducing the third harmonic
H6 The sixth harmonic should not be a problem
and is the result of poor power supply decou-
pling While 100 nF chip capacitors may be suffi-
cient for some applications it would be insuffi-
cient for driving full signal swings into a twisted
pair line at 100 kHz Under these conditions the
addition of 4 7 mF tantalum capacitors would
cure the problem
Figure 1 Typical Twisted Pair Application
2140-15
7
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