Double Op Amp with individual shutdown. Any IC suggestions?

Thread Starter

popcalent

Joined Mar 17, 2018
118
Hello,

I'm trying to make a 2-to-1 analog selector/multiplexer. I came across a design using a TLV9062S which is exactly what I need and I describe in the title. The problem is this IC is nowhere to be found. I saw the lt1218l, which is an individual Op Amp with shutdown, but again, I can't find it (eBay, Amazon, etc). Also, I need it to be DIP. Any IC suggestions?

This is what I attempt to make:
Screenshot_2024-01-30-20-27-30-715_com.google.android.apps.docs-edit.jpg
 
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Thread Starter

popcalent

Joined Mar 17, 2018
118
That's a new device, and new devices are no longer made in the DIP package, since all commercial PCBs now use surface-mount packages.
The closest is the surface-mount SOP package.
Are there any old DIP Op Amps that have a shutdown/enable? Or is there a way I can configure two Op Amps with no shutdown/enable so they do what I want to do (2-to-1 mux)? Thanks.
 

Thread Starter

popcalent

Joined Mar 17, 2018
118
Possibly, but I'm not aware of any.
I'll end up buying the one you suggested from digikey with this
adapter for a breadboard. Im not familiar with SOIC/SOP formats since I always use DIP, but I assume it's the correct adapter. The description of the IC said it's 10-VSSOP and that's what I used to find the adapter.
 

Ron H

Joined Apr 14, 2005
7,063
Digikey appears to have MAX9913.
Did you consider an analog multiplexer followed by a single voltage follower?
 
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Thread Starter

popcalent

Joined Mar 17, 2018
118
Digikey appears to have MAX9913.
Did you consider an analog multiplexer followed by a single voltage follower?
Doesn't the MAX9913 do the same as the TLV9206S? It's also SOIC. I'll try the 4053, which is a triple 2-to-1 analog mux and it's DIP. Thanks.
 

LowQCab

Joined Nov 6, 2012
4,055
If your project can tolerate some "change-over-Switching-Noise",
then just use a small Dual-FET-Driver to Power any Op-Amp You may have.

As to the possible instabilities that may arise from switching the Power-Supply to your Op-Amps,
that will depend upon the particular part-number of the Op-Amps that You choose to use.
Most modern Op-Amps will not exhibit any "bad-manners".

These small Dual-FET-Drivers are available with
one Channel being "Inverting" and the other Channel being "Non-Inverting",
so both Inputs can be tied together and driven with a single Logic-Input.

They are extremely fast and can easily handle several Amps of Current,
and are readily available in PDIP-8-Packages.

They are also available with an "Enable-Input",
but I don't know if that would be useful to You or not.

Another idea ..........
You can switch the 2 Op-Amp-Outputs using 2 "Opto-FET" Isolators.
This may be your most satisfactory, and simplest, solution.
.
.
.
 

Ya’akov

Joined Jan 27, 2019
9,117
I'll end up buying the one you suggested from digikey with this
adapter for a breadboard. Im not familiar with SOIC/SOP formats since I always use DIP, but I assume it's the correct adapter. The description of the IC said it's 10-VSSOP and that's what I used to find the adapter.
You can get SMT to DIP adapters for far less than that—along with .1” pin headers to give them legs. Amazon or AliExpress (among others) will have many options including assortments and dual sided versions for two different devices in one.
 
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