Coded data generation or conversion – Analog to or from digital conversion – With particular solid state devices
Patent
1998-11-09
2000-12-26
Williams, Howard L.
Coded data generation or conversion
Analog to or from digital conversion
With particular solid state devices
341145, H03M 100
Patent
active
06166670&
ABSTRACT:
A self calibrating current mirror circuit has a curent mirror input for receiving an input current, and a current mirror output for providing an output current. The circuit utilizes a comparator, a charge pump and a MOS transistor having a drain connected to pair of transfer gates. In a first mode of operation, the current of the MOS transistor is switched to the current mirror input for calibration. The comparator provides a signal to the charge pump to increase or to decrease the gate voltage of the MOS transistor. In a second mode of operation the current of the MOS transistor is switched to the current mirror output. A plurality of self calibrating current mirror stages are used to obtain a current mirror that provides an output with multiple current levels, for use as a switched current digital to analog converter (DAC).
REFERENCES:
patent: 5017919 (1991-05-01), Hull et al.
patent: 5115151 (1992-05-01), Hull et al.
patent: 5283582 (1994-02-01), Krenik
patent: 5353028 (1994-10-01), De Wit et al.
patent: 5594388 (1997-01-01), O'Shaughnessy et al.
patent: 5798723 (1998-09-01), Fong
Jeanglaude Jean B.
Williams Howard L.
LandOfFree
Self calibrating current mirror and digital to analog converter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Self calibrating current mirror and digital to analog converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self calibrating current mirror and digital to analog converter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-999859