BANDGAP REFERENCE CIRCUIT
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United States of America Patent
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N/A
Issued Date -
Oct 4, 2012
app pub date -
Jul 27, 2011
filing date -
Mar 30, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A bandgap reference circuit includes a modulator, an amplifier, a demodulator, a closed feedback loop and an output circuit. The modulator is utilized for modulating an input signal to generate a modulated input signal. The amplifier is utilized for amplifying the modulated input signal to generate an amplified modulated input signal. The demodulator is utilized for demodulating the amplified modulated input signal to generate a demodulated signal. The closed feedback loop is coupled between an output terminal of the demodulator and an input terminal of the modulator. The output circuit is utilized for generating an output current according to the demodulated signal, where the output current is a constant current insensitive to fluctuations in temperature.
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