OPA2377-Q1: Applying voltage to output terminals of opamp

Gokhan G.

Part Number: OPA2377-Q1
Other Parts Discussed in Thread: OPA2377

Tool/software:

Hi,

I'm planning to use OPA2377QDGKRQ1 in mass production. After assembly at end-of-line testing, we need to apply voltage to the output terminal (pin7 and pin1) of this IC.

I couldn't find any information about sink current capacity and I needed to confirm application from TI side.

Q1) The VCC will be 3.3V and I'm planning to apply ~3V to output pin from (pin7 and pin1). Is it safe to do this? Does it damage my IC?

Q2) Does this application damage any component inside which leads problem in long-term usage? I meant some problems appear later on.

Q3) Does this application reduce life-time of component?

Thanks in advance.

7 hours ago

0 Gokhan G. 4 hours ago

Intellectual 645 points

I forgot to add schematic. It is as below.

0 Clemens Ladisch 3 hours ago

Guru 257410 points

See figures 10 and 12 for how the output behaves. The absolute maximum ratings allow one output to be shorted to ground.

Would it be possible to inject the voltage at the other side of the R, directly at the ADC pin?

0 Marek Lis 1 hour ago

TI__Guru 61380 points

Shorting OPA2377 output to 3V with Vcc of 3.3V is safe BUT will result in up to +30mA/-50mA short circuit current. For this reason, in order not to exceed the maximum junction temperature of 150 deg C, only one output should be shorted at any given time - see below.

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OPA2377-Q1: Applying voltage to output terminals of opamp