Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...
Patent
1993-06-01
1995-08-22
Dougherty, Thomas M.
Electricity: power supply or regulation systems
Self-regulating
Using a three or more terminal semiconductive device as the...
323315, G05F 316
Patent
active
054443610
ABSTRACT:
A cascode mirror circuit, referred to as a "half-cascode mirror", or "HCM" has first (cascode), second (active), and third (base control) transistors. The cascode and active transistors are connected in series at a first node, the series being connected between a second node and a reference potential. The cascode transistors has its base connected to a second reference voltage. The base control transistor is connected between the supply voltage and a base of the active transistors, with its base connected between the first reference current source and the cascode transistor. Depending upon the selection of input and output signal locations, the circuit can perform various functions, including the generation of an output circuit that varies linearly, logarithmically, or exponentially with an input current, and the generation of an output voltage that varies linearly with the input current.
REFERENCES:
patent: 4004247 (1977-01-01), Van de Plassche
patent: 4479086 (1984-10-01), Nagano
patent: 4703249 (1987-10-01), De La Plaza et al.
patent: 4733196 (1988-03-01), Menniti et al.
patent: 4740766 (1988-04-01), Metz
patent: 4937516 (1990-06-01), Sempel
patent: 4952866 (1990-08-01), Van Tuijl
patent: 4970452 (1990-11-01), Barbu et al.
patent: 4980584 (1990-12-01), Goff et al.
patent: 4990803 (1991-02-01), Glbert
patent: 4990864 (1991-02-01), Kwan
patent: 5012133 (1991-04-01), Hughes
patent: 5038053 (1991-08-01), Djenguerian et al.
patent: 5173656 (1992-12-01), Seevinck et al.
Barber et al., "A True Logarithmic Amplifier for Radar IF Applications", IEEE Jou. Solid-State Cir., vol. SC-15, No. 3, Jun. 1980, p. 291.
Kimura, "A CMOS Logarithmic IF Amplifier with Unbalanced Source-Coupled Pairs", IEEE Jou. Solid-State Cir., vol. 28, No. 1, Jan. 1993, p. 78.
Huijsing et al., "A Monolithic Analog Exponential Converter", IEEE Jou. Solid-State Circuits, vol. SC-15, No. 2, Apr. 1980, p. 162.
Wassenaar et al., "New Techniques For High-Frequency RMS to DC Conversion Based on a Multi-Functional V-to-I Convertor", IEEE Jou. Solid-State Cir. vol. 23, No. 3, Jun. 1988.
Bachand Richard A.
Berhane Adolf
Dougherty Thomas M.
Jorgenson Lisa K.
Robinson Richard K.
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