AS89010 high performance needs great design Datasheet
The ASIC AS89010is a low noise sensor interface application specific standard product (ASSP) and suitable for coupling of multi-channel optical sensors or sensors using current output. It converts input currents of for example photodiodes (both polarities) to a digital output and realizes a continuous or triggered measurement via current integration. Optional the integration time and sensitivity can be controlled by external programming to extend the internal functions and parameters. The four signal channels convert directly and simultaneously the input currents to a digital representation of the measured average. The channels may be divided into three signal channels and one dummy channel for compensation of parasitic currents. This ASIC is especially suitable for signal conditioning of photodiodes of array sensors like color or other optical sensors with maximum of 4 channels per chip1. A configurable conversion gain factor and integration time support a dynamic range2of 1-2.68E+08and achieves an accuracy of up to 16bit signal resolution with sensitivity up to 20fA/LSB.
The internal reference generations offers a high reliability. The converter is insensitive to a 50Hz/60Hz external disturbances and was especially designed to accommodate high accuracy at high sensitivity offering high robustness. Automatic Power down(sleep function) between subsequent measurements offers operation with very low current c60onsumption. Further, it offers a wide range of reference currents (1.25nA to 5μA), integration times (1ms to 1s), synchronized mode and other control modes adjustable by user programming. The conversion data can be accessed via 16bit/400kHz fast I²C Interface with programmable slave addresses. Measurement of actual integration time for a full triggered measurement can be performed.
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Datasheet |
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Please see the document for details |
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SSOP16 |
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English Chinese Chinese and English Japanese |
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2017 - 07 - 06 |
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V3.11 |
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db12348e |
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2.9 MB |
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