Pretty nifty part - 200mA voltage reference

[daqq]

This is nice:

http://www.analog.com/en/analog-dialogue/articles/the-refulator-the-capabilities-of-a-200-ma-precision-voltage-reference.html?7380&ADICID=EMAL_WW_P1274_SUB-NL-PN_290&elqTrackId=fd74a4d584c1403ba6abc94af05926d7&elq=e0096cfe1ec8410a998a95b619d04450&elqaid=7380&elqat=1&elqCampaignId=4102

Pretty much a precision linear voltage regulator.

[tszaboo]

I love, how Linear technology casually drops in some parts in their application notes. Like Figure 12. Let's just throw in some resistors next to our 10ppm/K reference voltage to multiply the signal, no problems right? Let's just ignore the tempco of resistors, the effects of real world components. Let's just not mention that we used film capacitors to filter the reference, or that you need passives that cost more than the IC to not completely ruin the performance.

[SoundTech-LG]

Nice to have another unique alternative...

[PartialDischarge]

I wonder what program they use for those circuit schematic graphics....

[kosine]

Interesting part. Digikey has the B-grade version for around £4 (20ppm/C and 0.1% accuracy); The A-grade is a little more expensive but offers the 10ppm/C and 0.05% spec.

However, it only seems to be available in 2.5V output and a 16 pin SOP package. So not very breadboard friendly for prototyping, and not ideal if you need a different voltage. (As pointed out above.)

I guess the substantial output current is a key feature here, since you can run a whole circuit from it.

If that's what you're after, then an nice cheaper alternative is the 3-pin LP2950. About £0.60 each, and the specs are not too far behind. 100mA output at 20ppm/C and 0.5% accuracy. (In practice I've found them to be generally better than that, maybe around 0.25%.)

They're available in 3V, 3.3V and 5V outputs, which makes them quite suitable for half-decent ADC measurements on casual microcontroller projects.

The designers also made the pin out the same as the venerable 78L05 (which are +/-5% output at best), so it's a good affordable component for upgrades and a nice easy step for beginners to get into more precision circuits. Well worth adding a few to your parts bin.

[daqq]

However, it only seems to be available in 2.5V output and a 16 pin SOP package.

Actually, the output is seems adjustable by using the SENSE pin as a resistive feedback.