REF200: Modern SMT REF200 Replacement or Alternative

Zebryk

Part Number: REF200
Other Parts Discussed in Thread: TLV9061, TLV9062, REF102, TL431LI

Hello,

Working on a tiny design and am looking for a replacement or alternative to the venerable REF200 which is only available in the "huge" SOIC package. Needing both a current source and a current sink, (2) separate, very small devices could be feasible.

Thanks,

over 6 years ago

0 Marcoo Z over 6 years ago

TI__Mastermind 19580 points

Hi Zebryk,

The REF200 is a very versatile device but we do not have an updated version of it. If there is specific features you need from the REF200 might be possible to build them discretely. A voltage reference + resistor can act as a current source or sink.
This application note goes over some of the basics. The amplifier isn't always needed. www.ti.com/.../sbva001.pdf

-Marcoo

0 Zebryk over 6 years ago in reply to Marcoo Z

Expert 1240 points

Marcoo,

That App Note is from Burr-Brown and is from the year 2000.

One would expect some update over 19 years.

FYI, we would be using this with the TLV9062 or (2) of the TLV9061.

We need a solution in this size for a miniature medical product.

Cost is not very important.

Can you point us at some specific "Voltage Reference" or other part more suitable than the REF102?

Thanks,

0 Marcoo Z over 6 years ago in reply to Zebryk

TI__Mastermind 19580 points

Hi Zebryk,

That application note is applicable for our entire TI series voltage reference portfolio:
www.ti.com/.../products.html
The smallest series voltage reference is the REF33xx family below I available in QFN. The application note is also applicable to this device.
www.ti.com/.../ref3330.pdf

Another alternative is a using a '431 device like the TL431LI. See figure 37 on the datasheet for current sink. This solution might not be the smallest but it is very flexible.
www.ti.com/.../tl431li.pdf

-Marcoo

0 Zebryk over 6 years ago in reply to Marcoo Z

Expert 1240 points

Marcoo,

Excellent suggestions!
Much to study.

Thanks,

Power management

Power management forum

REF200: Modern SMT REF200 Replacement or Alternative