EL5106(2004) Ver la hoja de datos (PDF) - Intersil

Número de pieza

componentes Descripción

Fabricante

EL5106
(Rev.:2004)

350MHz Fixed Gain Amplifiers with Enable

Intersil 

EL5106, EL5306

Current Limiting

The EL5106 and EL5306 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 EL5106 and

EL5306, it is possible to exceed the 125°C Absolute

Maximum junction temperature under certain very high load

current conditions. Generally speaking when RL falls below

about 25Ω, it is important to calculate the maximum junction

temperature (TJMAX) for the application to determine if

power supply voltages, load conditions, or package type

need to be modified for the EL5106 and EL5306 to remain in

the safe operating area. These parameters are calculated as

follows:

TJMAX = TMAX + (θJA × n × PDMAX)

SO Package Outline Drawing

where:

TMAX = Maximum ambient temperature

θJA = Thermal resistance of the package

n = Number of amplifiers in the package

PDMAX = Maximum power dissipation of each amplifier in

the package

PDMAX for each amplifier can be calculated as follows:

PDMAX

=

(2 × VS × ISMAX ) +

( VS

-

VOUTMAX )

×

V-----O----U----T----M-----A----X--

RL

where:

VS = Supply voltage

ISMAX = Maximum bias supply current

VOUTMAX = Maximum output voltage (required)

RL = Load resistance

9

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