A-to-D Converter of the successive-approximation type

Details A-to-D Converter of the successive-approximation type A-to-D Converter of the successive-approximation type

1979-08-20

1983-08-23

Sloyan, T. J.

Communications: electrical

Audible indication

Percussion-type sound producer

340347DA, 340347M, H03K 1302, H03K 1308

Patent

active

044006900

ABSTRACT:
An integrated-circuit analog-to-digital converter of the successive-approximation type formed on a single monolithic chip. The converter is made by a diffusion process wherein certain portions of the chip are formed with normal-mode linear transistors, and other portions are formed with inverted mode I.sup.2 L transistors. The normal-mode transistors provide a switchable current-source DAC, a set of three-state output buffers, and a comparator. The inverted mode transistors provide an internal clock and successive-approximation control circuitry for the DAC. The chip also includes a voltage reference to provide for absolute analog-to-digital conversions

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patent: 4007385 (1977-02-01), Chapron
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patent: 4013901 (1977-03-01), Williams
patent: 4158782 (1979-06-01), Price, Jr.
patent: 4178584 (1979-12-01), Davis
patent: 4227185 (1980-10-01), Kronlage
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, 6/1972, pp. I-55 to I-59.
Dooley, A Complete Monolithic 10-Bit D/A Converter, 1973 IEEE International Solid-State Circuits Conference, Digest of Technical Papers 14, Feb. 1973, pp. 12-14.
The Engineering Staff of Analog Devics, Inc., Analog-Digital Conversion Handbook, 6/1972, pp. II-46 to II-48.
Hart et al., Bipolar LSI Takes a New Direction with Integrated Injection Logic, Electronics, 3 Oct. 1974, pp. 111-118.

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