Accession Number:

ADA056379

Title:

Linear Device Applications Analysis: Delta Sigma Modulator Study.

Descriptive Note:

Final rept. Sep 76-Oct 77,

Corporate Author:

CHARLES STARK DRAPER LAB INC CAMBRIDGE MA

Personal Author(s):

• Welling,Peter A.

Report Date:

1977-09-01

Pagination or Media Count:

52.0

Abstract:

The report describes the operation of the delta sigma modulator A-D converter and addresses the issues of integrating and hardening the circuit. The inputoutput relationship of the converter is stated for both DC and AC signals. A survey of commercial converters which use delta sigma modulation or related techniques is summarized. Various current switch designs, amplifier technologies, and resistive materials are examined to develop a radiation hard, integrated circuit configuration. A design which automatically nulls offset in the converter is outlined. Author

Descriptors:

• *ANALOG TO DIGITAL CONVERTERS
• *MODULATORS
• CLOCKS
• RESOLUTION
• INTEGRATED CIRCUITS
• FEEDBACK
• ERRORS
• SAMPLING
• QUANTIZATION
• NULLS(AMPLITUDE)
• INTEGRATORS
• RADIATION HARDENING
• COMPARATORS

Subject Categories:

• Electrical and Electronic Equipment
• Nuclear Radiation Shielding, Protection and Safety

Distribution Statement:

APPROVED FOR PUBLIC RELEASE