EL5166 Intersil Corporation, EL5166 Datasheet - Page 8

• Manufacturer Part Number: EL5166
• Description: 1.4GHz Current Feedback Amplifiers with Enable
• Manufacturer: Intersil Corporation

between 5Ω and 50Ω) can be placed in series with the
output to eliminate most peaking. The gain resistor (R
then be chosen to make up for any gain loss which may be
created by this additional resistor at the output. In many
cases it is also possible to simply increase the value of the
feedback resistor (R
Current Limiting
The EL5166 and EL5167 have no internal current-limiting
circuitry. If the output is shorted, it is possible to exceed the
Absolute Maximum Rating for output current or power
dissipation, potentially resulting in the destruction of the
device.
Power Dissipation
With the high output drive capability of the EL5166 and
EL5167, it is possible to exceed the 125°C Absolute
Maximum junction temperature under certain very high load
current conditions. Generally speaking when R
about 25Ω, it is important to calculate the maximum junction
temperature (T
power supply voltages, load conditions, or package type
need to be modified for the EL5166 and EL5167 to remain in
the safe operating area. These parameters are calculated as
follows:
where:
PD
where:
T
PD
JMAX
T
θ
n = Number of amplifiers in the package
PD
the package
V
I
V
R
SMAX
MAX
MAX
JA
MAX
S
OUTMAX
L
MAX
= Load resistance
= Supply voltage
= Thermal resistance of the package
=
for each amplifier can be calculated as follows:
=
= Maximum ambient temperature
= Maximum supply current of 1A
T
= Maximum power dissipation of each amplifier in
2 (
MAX
= Maximum output voltage (required)
×
V
JMAX
+
S
(
×
θ
JA
I
F
SMAX
) for the application to determine if
) to reduce the peaking.
×
n PD
×
)
+
(
MAX
8
V
S
–
)
V
OUTMAX
)
×
L
V
--------------------------- -
falls below
OUTMAX
R
L
G
EL5166, EL5167
) can