A monolithic 20 b delta-sigma A/D converter

Author

DelSignore, B. ; Kerth, D. ; Sooch, N. ; Swanson, E.

Author_Institution

Crystal Semicond. Corp., Austin, TX, USA

fYear

1990

fDate

14-16 Feb. 1990

Firstpage

170

Lastpage

171

Abstract

Oversampled delta-sigma converters have been used for high-resolution analog-to-digital conversion over a wide range of input frequencies. Oversampled converters reduce the need for complex antialias filters, eliminate sample-and-hold amplifiers, and are free of differential nonlinearity errors. A fourth-order converter with a dynamic range of 123 dB and a signal-to-total-harmonic-distortion ratio of 126 dB is described. The input voltage range is 20 V peak to peak, the input signal bandwidth is DC to 500 Hz, the clock frequency is 1024 MHz, and the output word rate is 32 K/s. The 4.48*6.53-mm chip is packaged in a 28-pin plastic leaded chip carrier/leadless chip carrier (PLCC/LCC) and dissipates 120 mW using +5 V, -5 V, and ground.<>

Keywords

analogue-digital conversion; monolithic integrated circuits; -5 V; 1024 MHz; 120 mW; 20 V; 20 bit-resolution; 5 V; 500 Hz; LCC; PLCC; clock frequency; delta-sigma A/D converter; fourth-order converter; high resolution conversion; input signal bandwidth; input voltage range; leadless chip carrier; oversampled ADC; plastic leaded chip carrier; Attenuation; Band pass filters; Feedback; Filtering; Finite impulse response filter; Frequency; Sampling methods; Switching circuits; Timing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference, 1990. Digest of Technical Papers. 37th ISSCC., 1990 IEEE International

Conference_Location

San Francisco, CA, USA

Type

conf

DOI

10.1109/ISSCC.1990.110181

Filename

110181