Logarithmic amplifier

Details Logarithmic amplifier Logarithmic amplifier

1988-12-05

1990-01-02

Mottola, Steven

Amplifiers

Signal feedback

Nonlinear impedance element in loop path

330143, 307492, 328145, G06G 724, H03F 130

Patent

active

048916030

ABSTRACT:
A logarithmic amplifier which obtains accurate logarithmic output voltage and expands maximum current value and which realizes accurate logarithmic conversion by eliminating logarithmic conversion error voltage resulting from internal resistance of logarithmic conversion element using a voltage appearing when a forward current of logarithmic conversion element is applied to a resistor.

REFERENCES:
patent: 3584232 (1971-06-01), Wallace, Jr.
patent: 3700918 (1972-10-01), Kawashima
Burr-Brown Products Data Book 1988, (Japan), pp. 4-18, 4-22.

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