iin+ iin- igain0 igain1 vin+ vin- vrefout va+ reset hpf vd+ dgnd agnd fout e1 e2 cpuclk xout xin freq0 freq1 freq2 pga: x10, x50, x100, x150 x10 neg + - + - 4th order ? modulator 2nd order ? modulator hpf option energy-to- frequency conversion negative power indication clock generator digital filter digital filter 2.5v on-chip reference vrefin x1 hpf option CS5466 cirrus logic, inc. ?2901 via fortuna ?austin tx 78746 usa ?t 512-851-4000 ?t 800-888-5016 ?f 512-851-4977 product bulletin 0146-0904-pb-lp 2004 cirrus logic, inc. all rights reserved. product information is subject to change without no tice. cirrus logic and leading the digital entertainment revolution are trademarks of cirrus logic, inc. other brand and product names may be trademarks or service marks of their respec tive owners. accurate performance & long-life operation ? energy data linearity: 0.1% of reading over 1000:1 dynamic range ? on-chip functions: measures energy and performs energy-to-pulse conversions ? meets accuracy spec for iec-687/1036 ? current channel features 24-bit, fourth-order, delta-sigma a/d converter for precise measurements high-pass filter four input gain range options ? on-chip 2.5 v reference (tempco 25 ppm/c typ) ? on-chip energy direction indicator ? 24-pin ssop package CS5466 8.2 mm 8.5 mm ic dimensions (maximum?ins included) residential power-meter designers impressed with new ics features and performance cirrus logic CS5466 high integration delivers big savings the cirrus logic CS5466 is an ideal low-cost solution for electronic resi- dential power-meter applications. the new ic provides multiple gain ranges, an energy-to-frequency con- verter, energy-pulse outputs, and configurable-pulse outputs for a step- per motor or mechanical counter. this impressive single-chip integration eliminates the inconvenience and expense of a separate microproces- sor or eeprom?hich saves bom costs, reduces design time and results in improved power-meter product margins. proven technology ensures accuracy and reliability the CS5466 includes a 2.5 v on-chip reference that is optimized for simple- function meters. a superior 24-bit, fourth-order, delta-sigma a/d con- verter delivers accurate readings. the CS5466 also provides excellent energy data linearity (1000:1 dynamic range, ?.1% of reading). outstanding temperature stability results in long-life operation, which improves end-user satisfaction and minimizes warranty expenditures. accurate performance and long-life operation in a low-cost design?he CS5466 delivers precisely what is needed to succeed in the electronic residential power meter market. www.cirrus.com
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