OPA2376: Output Current

Nabeel Khan

Part Number: OPA2376
Other Parts Discussed in Thread: OPA376

Hi Team,

I need OPA2376 to reliably source 25 mA continuously without dropping out or changing its dynamic performance.
The datasheet for OPA2376 shows a “Typical” short circuit current of +30mA, so I’m not confident if I can source 25mA continuously without
problems.

Can this amp source +25mA continuously without affecting its performance in other areas?

If it can’t, maybe you can recommend a better amp? Here are the criteria I am looking for:

Channels: 2

Vsupply: +3.3V

Rail to Rail: In + Out

GBW: > 3 MHz

Vos: < 150uV

eN: < 50 nV/rtHz

iOut: > 30mA continuous

Package: Dual, MSOP-8 or smaller

Thanks,

Nabeel

over 9 years ago

0 Tim Green1 over 9 years ago

TI__Expert 6275 points

As you pull higher current out of the op amp output you will see a larger voltage drop across the output (i.e. less output voltage. Below is the curve from the OPA376 datasheet. You will see it also changes with temperature.

1) On 3.3V supply what type od out voltage are you trying to get at 30mA output current? i.e. from 100mv to 3.2V, etc?

2) What is your operating temperature range?

0 Ron Michallick over 9 years ago in reply to Tim Green1

TI__Guru**** 174826 points

Nabeel,

If you still need assistance, respond with answers to question asked on march 2nd.

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OPA2376: Output Current