Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1982-07-15
1988-07-05
Sloyan, T. J.
Communications: electrical
Audible indication
Percussion-type sound producer
340347M, 323369, H03M 118
Patent
active
047557931
ABSTRACT:
An improved input ranging divider and method for an analog to digital converter in which a floating common input line to the A to D comparator is coupled through an R/2R resistive input ladder. A constant reference voltage is applied to the other comparator input. By applying an input voltage to a certain input terminal or terminals of the input ranging divider, while the remaining terminals are either grounded or left floating, a wide range of diverse operating ranges may be made available to an A to D converter while utilizing only a small overall number of inputs.
REFERENCES:
patent: 3125677 (1964-03-01), Newell
patent: 3646548 (1972-02-01), Van Doran
Schmid, Electronic Analog/Digital Conversions, Van Nostrand Reinhold, 1970, pp. 240-247.
Precision Resistor Networks, Micro Networks Corporation, 1/1976, 4 pp.
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, 6/1972, pp. II-83 to II-87; III-1 to III-15.
12 Bit Hybrid A/D Converter Data Sheets, Data Device Corp., 2/1979, pp. 1-5.
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, 6/1972, pp. II-32 to II-35.
Ingrassia Vincent B.
Motorola Inc.
Sloyan T. J.
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