Accession Number : ADD013065

Title :   High-Speed Bipolar Logarithmic Analog-to-Digital Converter.

Descriptive Note : Patent, Filed 11 Oct 83, patented 16 Jul 85,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Burroughs,James A

Report Date : 16 Jul 1985

Pagination or Media Count : 4

Abstract : A high-speed bipolar logarithmic analog-to-digital (A/D) converter outputs a signed binary number proportional to the logarithm of a bipolar analog input signal. A log converter is followed by a level shifting amplifier to center the output of the log converter on a temperature compensating reference. The reference voltage from the temperature compensating reference is used by a linear A/D converter to set the end points of the converter range. A code converter follows the A/D converter if a uniform abslute value coding is desired. Limiting the number of least significant bits (LSB) used to those representing the range of u sable converter operation completes the device. (Patent)

Descriptors :   *PATENTS, *ANALOG TO DIGITAL CONVERTERS, *BIPOLAR SYSTEMS, *ANALOG SIGNALS, CODING, CONVERTERS, OUTPUT, VOLTAGE, INPUT, OPERATION, AMPLIFIERS, SHIFTING, COMPENSATION, TEMPERATURE

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE