esign of Low - Noise Bandgap References
نویسنده
چکیده
The noise power of bandgap references is directly related to the current consumption of the bandgap reference. This paper describes the design of low-noise bandgap references. It is shown that for an idealized bandgap reference, a fundamental noise limit exists when the limited current consumption is a constraint. A design example is given of a 1 V bipolar bandgap reference with a current consumption of 5 PA. The output voltage is 200 mV and the mean temperature dependency is ~ 2 0 ppmlK for 0 "C to 100 "6. The output noise density equals 166 n V / m .
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