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CDB5466U 데이터시트(PDF) 3 Page - Cirrus Logic |
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CDB5466U 데이터시트(HTML) 3 Page - Cirrus Logic |
3 / 21 page CDB5466U DS676DB1 3 1. HARDWARE 1.1 Introduction The CS5466 is a low cost power measurement solution combining two ∆Σ analog-to-digital converters (ADCs), an energy-to-frequency converter, and energy pulse outputs on a single chip. It is designed to accurately measure and calculate energy for single phase, 2- or 3-wire power metering applications with minimal external components. Low-frequency energy outputs, E1 and E2 supply average active power and can be used to drive a stepper motor or a mechanical counter; the high-frequency energy output FOUT is designed to assist in calibration; and NEG in- dicates negative energy. The CS5466 has configuration pins which allow the selection of pulse output frequency, current channel input range, and the high-pass filter enable option. The CS5466 also has a power-on reset function which holds the part in reset until the supply reaches the proper level. The CDB5466U is shipped with a CS5466-ISZ device located at U6. 1.2 Evaluation Board Overview The CDB5466U evaluation board provides a quick path to evaluating the CS5466 Power Measurement IC. Figure 1 illustrates the placement of the terminals, jumpers and IC components. The jumper options are shown in the fac- tory default positions. Figure 1. CDB5466U Assembly Drawing CDB5466U REV X JTAG USB J2 J6 Vu+_EXT VD+_EXT GND +5V J5 J4 J3 VIN+ VIN- TP9 TP11 IIN+ IIN- TP12 TP13 JP6 GND GND VREF VIN+ VIN- VREF GND GND VREF IIN+ IIN- VREF GND GND IIN+ IIN- GND GND VIN+ VIN- GND REF+ GND JP3 GND J17 J22 J24 J26 J12 LT1019 REF+ J8 VD+_EXT +5V J9 +3.3V VD+ Vu+_EXT +5V VD+ 8051_REGIN JP1 GND JP2 GND TP1 TP2 TP4 TP5 TP3 TP6 J10 1 J13 1 J15 1 J16 1 LED_EN LED_EN LED_EN LED_EN E1 E2 FOUT NEG J11 E1 E2 FOUT NEG RESET GND GND JP4 J32 J31 J30 J29 J28 JP5 GND TP10 CPUCLK U7 Y1 J25 VA+GND VD+ GND J14 J23 J27 GND VD+ J33 FOUT GND VD+ IGAIN0 IGAIN1 FREQ0 FREQ1 FREQ2 HPF CS5466 CONFIG RESET S1 4.096MHz TP7 TP8 XOUT XIN U3 U4 U5 J1 |
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