I'm in need of a reasonably precise 5V voltage reference, so I built one of the reference circuits for the Linear Technology LT1236 reference IC's, and it works great! But there is one part I don't fully grasp yet. The design notes indicate that adding a diode and resister to the circuit shown below makes it temperature insensitive. My question is, why does this work?
Also can anyone recommend an equivalent IC that's not $5/ea?
Data sheet is attached, DigiKey link here: http://www.digikey.com/product-detail/en/LT1236BIS8-5#PBF/LT1236BIS8-5#PBF-ND/889719
Reference circuit:
Also can anyone recommend an equivalent IC that's not $5/ea?
Data sheet is attached, DigiKey link here: http://www.digikey.com/product-detail/en/LT1236BIS8-5#PBF/LT1236BIS8-5#PBF-ND/889719
Reference circuit:
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