Check HA1457W

[spoontex]

Hello,

I've a bunch of HA1457W. But I don't know if they work or not. How can I test them? Anybody knows some test circuit?

Thanks.

[PRR]

The schematic on page 2 of the datasheet will let you test most of the specs.

[spoontex]

The schematic on page 2 of the datasheet will let you test most of the specs.

This test schematic have a lot of components!

I found this two circuits from 320volts.

https://320volt.com/en/operational-a...ester-circuit/

It can test single, dual and quad opamps. I only need to make and adapter for sip8 IC's. But witch one of this two?

Thanks.

[FiveseveN]

This test schematic have a lot of components!

It's for testing the performance as described in the datasheet. If you want the simplest go/no-go test build a DC amp/buffer.

[idy]

Quote from: spoontex on Today at 10:21:12 AM
This test schematic have a lot of components!
It's for testing the performance as described in the datasheet. If you want the simplest go/no-go test build a DC amp/buffer.

There are two kinds of testing:
1) Is this an "in spec" example of this exact chip, including all the details that "might" be important for an engineer? You need the circuit on the spec sheet for this.
2) Is this a working opamp? You just need a power source, a jumper, and an input voltage. And a meter. A couple of caps if you then want to try audio.

The first kind is important if you are have a very specific app and/or reason to fear counterfeit parts,  "blacktopped" TL072 masquerading as expensive hi-fi chips. The single in-line 8 pin I guess they still do make them. Interesting.
First thing is just to see if it buffers.