Title :
The design of low-noise bandgap references
Author :
Van Staveren, Arie ; Verhoeven, Chris J M ; van Roermund, Arthur H. M.
Author_Institution :
Dept. of Electr. Eng., Delft Univ. of Technol., Netherlands
fDate :
4/1/1996 12:00:00 AM
Abstract :
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 μA. The output voltage is 200 mV and the mean temperature dependency is ≈20 ppm/K for 0°C to 100°C. The output noise density equals 166 nV/√Hz
Keywords :
bipolar transistor circuits; circuit noise; energy gap; reference circuits; 0 to 100 C; 1 V; 200 mV; 5 muA; bipolar bandgap reference; current consumption; design; low-noise bandgap reference; noise power; output voltage; temperature dependency; Circuit noise; DC generators; Energy consumption; Impedance; Noise generators; Photonic band gap; Stochastic processes; Temperature dependence; Temperature distribution; Voltage;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
