Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1996-02-14
1999-12-21
Wells, Kenneth B.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327534, H03K 301
Patent
active
060054344
ABSTRACT:
An output current of a constant current source formed of a gate potential control circuit and a p channel MOSFET is determined only by the sub threshold swing value of a p channel MOSFET and a resistance of a resistor. A signal out 1 controlling the operation of a ring oscillator circuit is switched at a predetermined potential corresponding to the sum of the threshold value of n channel MOSFETs through which the output current flows. Since the output current has no power supply voltage dependency and increases in proportion to the temperature, the predetermined potential is independent of the power voltage. The temperature dependency is also small since the temperature dependency of the output current value and the threshold value cancel each other. Therefore, the substrate potential can be controlled at a stable level unsusceptible to variation in the external operating conditions.
REFERENCES:
patent: 4964082 (1990-10-01), Sato et al.
patent: 5227675 (1993-07-01), Taguchi
"Analog MOS Integrated Circuits For Signal Processing", Greorgorian, R. et al., Wiley-Interscience Pulication, 1986, pp. 127-127.
Ooishi Tsukasa
Tsukikawa Yasuhiko
Mitsubishi Denki & Kabushiki Kaisha
Wells Kenneth B.
LandOfFree
Substrate potential generation circuit that can suppress variati does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Substrate potential generation circuit that can suppress variati, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Substrate potential generation circuit that can suppress variati will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-508825