EL5210CS-T13 Просмотр технического описания (PDF) - Elantec -> Intersil

Номер в каталоге

Компоненты Описание

производитель

EL5210CS-T13

30MHz Rail-to-Rail Input-Output Op Amps

Elantec -> Intersil 

EL5210C/EL5410C

30MHz Rail-to-Rail Input-Output Op Amps

stage of the device begin to conduct and overvoltage

damage could occur.

1V

10µ S

power supply voltage, plus the power in the IC due to the

loads, or:

PDMAX = Σi[VS × ISMAX + (VS+ – VOUTi ) × ILOADi ]

when sourcing, and

PDMAX = Σi[VS × ISMAX + (VOUTi – VS- ) × ILOADi ]

VS=±2.5V

TA=25° C

AV=1

VIN=6VP-P

1V

Figure 2. Operation with Beyond-the-Rails

Input

Power Dissipation

With the high-output drive capability of the EL5210C

and EL5410C amplifiers, it is possible to exceed the

125°C 'absolute-maximum junction temperature' under

certain load current conditions. Therefore, it is important

to calculate the maximum junction temperature for the

application to determine if load conditions need to be

modified for the amplifier to remain in the safe operating

area.

The maximum power dissipation allowed in a package is

determined according to:

PDMAX = T----J---M-----A----X--Θ---–-J---AT----A----M-----A----X--

when sinking.

Where:

i = 1 to 2 for Dual and 1 to 4 for Quad

VS = Total Supply Voltage

ISMAX = Maximum Supply Current Per Amplifier

VOUTi = Maximum Output Voltage of the

Application

ILOADi = Load current

If we set the two PDMAX equations equal to each other,

we can solve for RLOADi to avoid device overheat. Fig-

ure 3 and Figure 4 provide a convenient way to see if the

device will overheat. The maximum safe power dissipa-

tion can be found graphically, based on the package type

and the ambient temperature. By using the previous

equation, it is a simple matter to see if PDMAX exceeds

the device's power derating curves. To ensure proper

operation, it is important to observe the recommended

derating curves shown in Figure 3 and Figure 4.

Where:

TJMAX = Maximum Junction Temperature

TAMAX= Maximum Ambient Temperature

ΘJA = Thermal Resistance of the Package

PDMAX = Maximum Power Dissipation in the

Package.

The maximum power dissipation actually produced by

an IC is the total quiescent supply current times the total

12

Share Link: