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EAGLE Library Object

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Object details

Name:DDC112
Type:device
Description:Dual Current Input 20-Bit ANALOG-TO-DIGITAL CONVERTER

Description:

The DDC112 is a dual input, wide dynamic range, charge- digitizing analog-to-digital (A/D) converter with 20-bit resolu- tion. Low-level current output devices, such as photosensors, can be directly connected to its inputs. Charge integration is continuous as each input uses two integrators; while one is being digitized, the other is integrating. For each of its two inputs, the DDC112 combines current-to- voltage conversion, continuous integration, programmable full-scale range, A/D conversion, and digital filtering to achieve a precision, wide dynamic range digital result. In addition to the internal programmable full-scale ranges, external integrat- ing capacitors allow an additional user-settable full-scale range of up to 1000pC.

Features: MONOLITHIC CHARGE MEASUREMENT A/D CONVERTER DIGITAL FILTER NOISE REDUCTION: 3.2ppm, rms INTEGRAL LINEARITY: ±0.005% Reading ±0.5ppm FSR HIGH PRECISION, TRUE INTEGRATING FUNC TION PROGRAMMABLE FULL-SCALE SINGLE SUPPLY CASCADABLE OUTPUT

Datasheet:

http://www.ti.com/lit/ds/symlink/ddc112.pdf

Additional information:

For practical daisychaining and layout considerations, consider the DDC112 evaluation board documentation:
http://www.ti.com/lit/an/sbaa029/sbaa029.pdf

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DDC112

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