Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1981-03-25
1983-10-18
Sloyan, T. J.
Communications: electrical
Audible indication
Percussion-type sound producer
340347M, H03K 1302
Patent
active
044108800
ABSTRACT:
The digital-to-analog converter comprises an R-2R ladder network with bit controlled current steering switches connecting the legs of the ladder network to first and second current buses. First and second current-to-voltage converters are connected to the current buses respectively, the second current-to-voltage converter being connected through a switch to the input of the first current-to-voltage converter. A uni-polar/bi-polar control signal renders the switch conductive or non-conductive in accordance with the data format desired. The digital-to-analog converter is also utilized in a successive approximation analog-to-digital converter.
REFERENCES:
patent: 3755807 (1973-08-01), Brown
Beckman Technical Bulletin, Series 7521M, CMOS, 12-Bit Multiplying D/A Converter, 10/77, 4 pages.
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, 6/72, pp. II-46 to II-48; II-80 and II-81.
Sklar, 2's Complement Arithmetic Operations, Computer Design, vol. 11, No. 5, 5/72, pp. 115-121.
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, 6/72, pp. II-16 to II-30 inclusive.
Cooper Albert B.
Sloyan T. J.
Sperry Corporation
Terry Howard P.
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