Accurate BandGap Voltage Current Reference Generator

CT20308 is a buffered accurate reference voltage generator, including a low pass filter with an external capacitor for noise reduction and PSRR improvement. In order to achieve a total error <1%, the amplifier in the bandgap core block implements an offset cancellation circuitry.

Reference voltage thermal drift is minimized by means of 7 bits trimming so that the voltage reaches the “golden point”.

Additional 6 bits are used to flatten the output thermal characteristic while performing trimming at one single temperature.

CT20308 includes reference currents generators, both using an external accurate resistor and a completely internal one tied to poly resistor values.

CT20308 also includes an over temperature detection circuit and Power On Reset.

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