how to test ic

sagarverma · 4th November 2005, 03:39 PM

how can i test an ic without sticking it into the circuit in which it is intended towork.in a nutshell,how to test if the ic is working or not without putting it in the ckt.

Netlist · 4th November 2005, 03:48 PM

There is one simple answer: you can't.

/Hugo

Christer · 4th November 2005, 03:54 PM

Or more precisely, you can, but the simplest way is to plug it into the circuit.

sss · 4th November 2005, 04:17 PM

why it shouldnt work in the first place?

Netlist · 4th November 2005, 05:06 PM

Quote:

Originally posted by Christer
Or more precisely, you can,

Did I answer too fast?

/Hugo

Nordic · 4th November 2005, 05:10 PM

What are the electrical test circuits in the datasheet for?

Christer · 4th November 2005, 05:13 PM

Quote:

Originally posted by Netlist

Did I answer too fast?

/Hugo

No, just too simply.

You are right in the sense that he would have to use some circuitry that actually uses the op amp (chip amp) as an amplifier, but it doesn't have to be the circuit it is intended to be used in. I guess that was my point.

sagarverma · 4th November 2005, 05:51 PM

so what r ic testers?
they test ics but cost a hell.they r general purpose.my purpose is for amp ics only

Netlist · 4th November 2005, 07:45 PM

What I had in mind was just a simple DMM and a universal answer. Go figure we had to go and measure a micro-controller (which is an IC as well) with an ohmmeter.

Even measuring an LM38XX wouldn't go that way.
Looking at the price of IC testers, and if you only want to test opamps I guess building a small test circuit with +/-15V, in and outputs or just plug it in some existing circuitry should do the trick.

/Hugo

peranders · 4th November 2005, 08:58 PM

Just wondering, do you ask this question in general or do you have used IC's which you want to test?

As you may have noticed the answer is yes and no.

4th November 2005, 03:39 PM	#1
sagarverma diyAudio Member Join Date: Feb 2005 Location: NEW DELHI	how to test ic how can i test an ic without sticking it into the circuit in which it is intended towork.in a nutshell,how to test if the ic is working or not without putting it in the ckt.

4th November 2005, 04:17 PM	#4
sss diyAudio Member Join Date: Jul 2003 Location: Israel , haifa	why it shouldnt work in the first place? __________________ if you are not living on the edge you are taking too much space

4th November 2005, 08:58 PM	#10
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	Just wondering, do you ask this question in general or do you have used IC's which you want to test? As you may have noticed the answer is yes and no. __________________ /Per-Anders (my first name) or P-A as my friends call me

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4th November 2005, 03:48 PM	#2
Netlist diyAudio Moderator Join Date: Jan 2003	There is one simple answer: you can't. /Hugo

4th November 2005, 03:54 PM	#3
Christer diyAudio Member Join Date: Sep 2002 Location: Sweden	Or more precisely, you can, but the simplest way is to plug it into the circuit.

4th November 2005, 05:10 PM	#6
Nordic diyAudio Member Join Date: Sep 2005	What are the electrical test circuits in the datasheet for?

4th November 2005, 05:51 PM	#8
sagarverma diyAudio Member Join Date: Feb 2005 Location: NEW DELHI	so what r ic testers? they test ics but cost a hell.they r general purpose.my purpose is for amp ics only

4th November 2005, 07:45 PM	#9
Netlist diyAudio Moderator Join Date: Jan 2003	What I had in mind was just a simple DMM and a universal answer. Go figure we had to go and measure a micro-controller (which is an IC as well) with an ohmmeter. Even measuring an LM38XX wouldn't go that way. Looking at the price of IC testers, and if you only want to test opamps I guess building a small test circuit with +/-15V, in and outputs or just plug it in some existing circuitry should do the trick. /Hugo

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