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CS5451A-IS датащи(PDF) 9 Page - Cirrus Logic |
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CS5451A-IS датащи(HTML) 9 Page - Cirrus Logic |
9 / 14 page CS5451A DS635PP1 9 3. GENERAL DESCRIPTION The CS5451A is designed for 3-phase power meter applications and interfaces to a current transform- ers or shunt to measure current, and a resistive di- vider or transformer to measure voltage. The CS5451A combines six ∆Σ modulators and decimation filters, three channels assigned for cur- rent input that have programmable input gain am- plifiers, and three channels assigned for voltage input. The CS5451A includes six decimation filters that output data at a 2000 Hz or 4000 Hz output word rate (OWR) when the input frequency at XIN = 4.096 MHz. The device outputs data on a serial output port. 3.1 Theory of Operation The CS5451A is designed to operate from a single +3V supply and provides a 8 0mVP-P and 1. 6VP-P input range for the current channels and 1.6 VP-P range for the voltage channels. These voltages rep- resent the maximum zero-to-peak voltage levels that can be presented to the inputs. The CS5451A is designed to accommodate common mode + sig- nal levels from VA- to VA+. Figure 2 illustrates the VA + VD + VIN 1+, VIN2 +, or VIN 3+ V IN 1 -, VIN2 -, o r V IN3- IIN1 +, IIN 2 +, o r IIN 3+ IIN 1 -, I IN2 - , o r II N3 - AG N D DG N D RE FIN RE FO UT O ption al Exte rn al Re fe ren ce V PHA S E + I -2 V PHA S E VA - +3 V 1.2 V NOTE: Current input channels actually measure voltage. Figure 2. Typical Connection Diagram |
Аналогичный номер детали - CS5451A-IS |
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Аналогичное описание - CS5451A-IS |
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