Accurate 24-bit ADC in eight-pin package needs little support.

EDN, March, 1999 by Schweber, Bill

Packing a 24-bit A/D converter into an SO-8 package lets you put high-resolution conversions into more applications, but you can't compromise accuracy. The LTC2400 from Linear Technology has an absolute accuracy (total unadjusted error) of less than 10 ppm; operates without an external crystal, thanks to an on-chip oscillator; and needs neither software for configuration and calibration nor peripheral circuitry, such as filters. Basic performance includes 2-ppm integral nonlinearity with no missing codes using an external 2.5V reference, 4-ppm full-scale error with 0.02-ppm/[degrees] C drift; 1-ppm offset with 0.01-ppm/[degree] C drift; and 0.3-ppm, 1.5-[micro]V rms noise. Conversion rate is 7.5 samples/sec, commensurate with many typical 24-bit applications.

...

Read the rest of this article with a Free Trial at HighBeam Research.

Premium Content Partnership | HighBeam Research provides an in-depth online archive library of reference works.