LMH6555EVAL National Semiconductor, LMH6555EVAL Datasheet - Page 22

• Manufacturer Part Number: LMH6555EVAL
• Manufacturer: National Semiconductor

Specifications of LMH6555EVAL

• Lead Free Status / Rohs Status: Not Compliant

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With an output differential load, R
ential swing between the output emitters appears at the
LMH6555 output terminals as V
With good matching between the input source impedances,
R
to infer the gain and output swing by inspection. The differ-
ential input impedance of the LMH6555, R
78Ω.
In differential input drive applications, there is a balanced
swing across the input terminals of the LMH6555, V
V
ferential current flow through the input terminals and from that
the output swing and gain.
For the special case where R
S1
IN
−
. So, by using the R
and R
S2
shown in Figure 24 and Figure 26, it is possible
IN_DIFF
S1
value, one determines the dif-
OUT
= R
L
, of 100Ω, half the differ-
.
S2
= R
S
IN_DIFF
= 50Ω we have:
, is close to
IN
+
and
(4)
22
The following is the expression for the Insertion Gain,
A
The expressions above apply equally to the single ended in-
put drive case as well, as long as R
case of the single ended input drive:
This is comparable to A
teristic table.
V_DIFF
:
V_DIFF
found in the Electrical Charac-
S1
= R
S2
= 50Ω. For the