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Class Information
Number: 341/127
Name: Coded data generation or conversion > Analog to or from digital conversion > Bipolar
Description: Subject matter where the analog signal has appreciable amplitude in both directions from a reference level.

Sub-classes under this class:

Class Number Class Name Patents
341/128 Dual slope analog to digital converter 48
341/129 Plural slope analog to digital converter 34

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
7443176 Test mode and test method for a temperature tamper detection circuit Oct. 28, 2008
7362248 Temperature tamper detection circuit and method Apr. 22, 2008
7317409 Apparatus and method for interfacing time-variant signals Jan. 8, 2008
7236111 Linearizing methods and structures for amplifiers Jun. 26, 2007
7116253 Radio frequency digital-to-analog converter Oct. 3, 2006
7030790 Systems and methods for auto gain control in Bi-CMOS digital to analog converters Apr. 18, 2006
6888485 Digital-analog converter May. 3, 2005
6744391 System for sampling a signal in an electronic instrument using a unipolar A/D converter Jun. 1, 2004
6674380 Digital-phase to digital amplitude translator with first bit off priority coded output for input to unit weighed digital to analog converter Jan. 6, 2004
6492929 Analogue to digital converter and method of analogue to digital conversion with non-uniform sampling Dec. 10, 2002
6369743 Differential amplifier, comparator, and A/D converter Apr. 9, 2002
6346902 Analog to digital converter Feb. 12, 2002
6246353 Integrated-circuit structures and methods for correction of temperature and process-induced parameter errors Jun. 12, 2001
5990817 A/D conversion device having a programmable transfer characteristic Nov. 23, 1999
5805095 Two's complement digital to analog converter Sep. 8, 1998
5670951 Radio communication device and method for generating threshold levels in a radio communication device for receiving four-level signals Sep. 23, 1997
5661480 Analog-to-digital converters with reduced power and area using offset current compensation Aug. 26, 1997
5614904 Balance companded delta conversion for homodyne receiver Mar. 25, 1997
5554988 Apparatus and method for generating a data signal Sep. 10, 1996
5323159 Digital/analog converter Jun. 21, 1994
5296857 Digital to analog converter with precise linear output for both positive and negative digital input values Mar. 22, 1994
5289191 Bipolar analog-to-digital conversion apparatus with unipolar current and voltage modes Feb. 22, 1994
5283583 High-speed A/D conversion using a series of one-bit conversion stages Feb. 1, 1994
5241312 High resolution analog to digital converter Aug. 31, 1993
5227791 East high-bit one step electronic analog-to-digital converter Jul. 13, 1993
5182561 Integrated converter with gate for supplying integrating dock pulses to counters only during reference signal integrating period Jan. 26, 1993
5157400 Automatic reference voltage controller of integral analog/digital converter Oct. 20, 1992
5128674 Two quadrants high speed multiplying DAC Jul. 7, 1992
5119094 Termination circuit for an R-2R, ladder that compensates for the temperature drift caused by different current densities along the ladder, using one type of biopolar transistor Jun. 2, 1992
5010339 Ultra linear spectroscopic analog-to-digital converter Apr. 23, 1991
4982192 Digital-to-analog converter having common adjustment means Jan. 1, 1991
4978959 Analog to digital converter, a digital to analog converter and an operational amplifier therefor Dec. 18, 1990
4973973 Code converter and encoder for converting a unipolar binary coded signal into a bipolar binary coded signal Nov. 27, 1990
4972188 Push pull double digital-to-analog converter Nov. 20, 1990
4937578 D/A converter for digital signals represented by a 2's complement Jun. 26, 1990
4926174 Digital voltmeter May. 15, 1990
4891645 Digital-to-analog converter with on-board unity gain inverting amplifier Jan. 2, 1990
4855743 Analog interface system Aug. 8, 1989
4849759 Analogue to digital converter Jul. 18, 1989
4837572 Digital-to-analog converter Jun. 6, 1989
4766417 Automatic offset compensating bipolar A/D converter circuit Aug. 23, 1988
4683458 Current-steering digital-to-analog converter for providing bi-directional currents through a load Jul. 28, 1987
4673916 Method and system for decoding a digital signal using a variable frequency low-pass filter Jun. 16, 1987
4636773 Binarily weighted pulse width digital-to-analog converter Jan. 13, 1987
RE32313 Digital-to-analog converter and PCM encoder using the converter Dec. 23, 1986
4618852 Monotonic A/D converter which minimizes circuitry for high order bit conversion Oct. 21, 1986
4590459 Analog/digital converter May. 20, 1986
4580127 Circuit for converting analog bipolar signals to digital signals Apr. 1, 1986
4517551 Digital to analog converter circuit May. 14, 1985
4488144 High linearity digital to analog converter Dec. 11, 1984

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