Vidatronic, Inc.

Mostafa Mohamed Hesham Kamel Toubar

Anand Veeravalli Raghupathy

Moises Emanuel Robinson

Sameh Assem Ibrahim

Sameh Ahmed Assem Ibrahim

A bandgap reference circuit includes a circuit for high-order temperature curvature compensation; and a circuit for low output impedance and current drive capability, wherein an output voltage of the bandgap reference circuit can be independently adjusted to be either above or below a silicon bandgap voltage without impacting temperature curvature.

Scalable low output impedance bandgap reference with current drive capability and high-order temperature curvature compensation

A band-gap reference circuit includes a band-gap voltage reference core to provide a reference voltage; a low impedance block; three capacitors; two transmission gates to connect and disconnect the capacitors; and two digital control blocks. The three capacitors includes an output capacitor connected at an output of the low impedance block to ground; a small capacitor connected to an output of the band-gap voltage reference core; and a large capacitor connected to the two transmission gates. The band-gap voltage reference core includes an operational amplifier, wherein an output of the operational amplifier connects to an input of the low impedance block and the small capacitor, wherein the small capacitor is also connected to ground; and a combination of bipolar junction transistors, MOS-FET, resistors, capacitors, or FinFET devices that provides a reference voltage.

Method and apparatus for low-output-noise, high-power-supply-rejection and high-precision trimmable band-gap voltage reference suitable for production test

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Cairo, Egypt

Mostafa Mohamed Hesham Kamel Toubar