Check HA1457W

[Davebassman]

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.

[nosaj]

here you go datasheets will normally have a sample circuit.
nosaj

[nosaj]

8-pin, Single-In-Line, Used in many older BOSS designs.
nosaj

[Davebassman]

I know, but I need a more basic circuit to test them...

Thanks

[nosaj]

If you read the link to the data sheet it also has a simple test circuit.
nosaj

[J M Fahey]

Ouch!!! The test circuit has over 20 components!!!

I suggest you connect it as a unity gain buffer, the simplest Op Amp circuit, as a go/no go test.

Get a Protoboard, plug OpAmp in it, connect

* Pin 8 to +15V
* Pin 4 to -15V
* Pin 6 to ground through a 100k resistor
* Pin 7 to pin 1 with a short piece of wire (about 1 inch)

Measure Vdc on pin 1 using the Multimeter 200mV scale, you should have less than 5 or 10 mV offset.

You can plug all your Op Amps there to test, just do it "cold" (no supply voltage applied)

Post results.

You can make more complex ones to measure gain, noise, bandwidth, signal swing under load, etc. , but to avoid wasting time you must first determine where they are alive or dead.

[Davebassman]

Ouch!!! The test circuit has over 20 components!!!

I suggest you connect it as a unity gain buffer, the simplest Op Amp circuit, as a go/no go test.

Get a Protoboard, plug OpAmp in it, connect

* Pin 8 to +15V
* Pin 4 to -15V
* Pin 6 to ground through a 100k resistor
* Pin 7 to pin 1 with a short piece of wire (about 1 inch)

Measure Vdc on pin 1 using the Multimeter 200mV scale, you should have less than 5 or 10 mV offset.

You can plug all your Op Amps there to test, just do it "cold" (no supply voltage applied)

Post results.

You can make more complex ones to measure gain, noise, bandwidth, signal swing under load, etc. , but to avoid wasting time you must first determine where they are alive or dead.

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 sil8 IC's. But wich one of this two?

Thanks.

[nosaj]

Here's an option
https://synthchaser.com/product/synt...op-amp-tester/
nosaj