PDF ADE7756EB Data sheet ( Hoja de datos )

Número de pieza	ADE7756EB
Descripción	Evaluation Board Documentation AD7756 Energy metering IC
Fabricantes	Analog Devices
Logotipo
Hay una vista previa y un enlace de descarga de ADE7756EB (archivo pdf) en la parte inferior de esta página. Total 15 Páginas
No Preview Available ! PRELIMINARYTECHNICALDATA = EvaluationBoardDocumentation AD7756EnergymeteringIC PreliminaryTechnicalData EVAL-ADE7756EB FEATURES Evaluation Board is designed to be used together with accompanying software to implement a fully functional Energy Meter (Watt-Hour Meter). Easy connection of various external transducers via screw terminals. Easy modification of signal conditioning components using PCB sockets. LED indicators on logic outputs CF, ZX, SAG and IRQ. Optically isolated data output connection to PC parallel port. Optically isolated frequency output (CF) to BNC. External Reference option available for on-chip reference evaluation. GENERAL DESCRIPTION The ADE7756 is a high accuracy electrical power mea- surement IC with a serial interface and a pulse output. The ADE7756 incorporates two second order sigma delta ADCs, reference circuitry, temperature sensor and all the signal processing required to perform active power and energy measurement. This documentation describes the ADE7756 evaluation kit Hardware and Software functionality. The ADE7756 evaluation board, together with the ADE7756 data sheet and this documentation provides a complete evaluation platform for the ADE7756. The evaluation board has been designed so that the ADE7756 can be evaluated in the end application, i.e., Watt-Hour Meter. Using the appropriate transducers on the current channel (e.g., shunt, CT etc.) the evaluation board can be connected to a test bench or high voltage (240V rms) test circuit. An on-board resistor divider network provides the attenuation for the line voltage. This application note also describes how the current transducers should be connected for the best performance. The evaluation board (watt-hour meter) is configured and calibrated via the parallel port of a PC. The data interface between the evaluation board and the PC is fully isolated. WindowsTM based software is provided with the evaluation board which allows it to be quickly configured as an energy meter. The evaluation board also functions as a stand alone evaluation system which can be easily incorporated into an existing system via a 25 way D-Sub connector. The evaluation board requires two external 5V power supplies (one is required for isolation purposes) and the appropriate current transducer. FUNCTIONAL BLOCK DIAGRAM V1P V1N AGND AGND AVDD DVDD DGND +5V V+ V- Filter Network ADE7756 74HC08 DOUT SCLK DIN CS RESET V2N V2P Filter Network & Attenuation Optional External AD780 2.5V Reference PROTOTYPE AREA 74HC08 BNC External Clock in Isolated Frequency output BNC CF CF ZX SAG IRQ Connector to PC Parallel Port REV. PrB 01/01 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 1 page PRELIMINARYTECHNICALDATA PRELIMINARY TECHNICAL DATA EVAL-ADE7756EB JP2 JP15 JP4 JP25 JP1 JP3 JP20 AD7756 JP10 JP7 JP8 JP9 JP51 JP13 JP11 JP21 JP14 AB JP5 JP6 JP19 JP12 AB Figure 5 - ADE7756 evaluation board jumper positions SETTING UP THE ADE7756 EVALUATION BOARD Shown below is a typical set up for the ADE7756 evalua- tion board. In this example a kWh meter for a 3 wire, single phase distribution system is shown. For a more detailed description on how to use a CT as a current transducer see the Current Sense Inputs section of this docu- mentation. The line voltage is connected directly to the evaluation board as shown. Note JP7 should be left open to ensure that the attenuation network is not bypassed. Also note the use of two power supplies. The second power supply is used to power the optical isolation. With JP14 left open, this will ensure that there is no electrical connection between the high voltage test circuit and the PC. The power supplies should have floating voltage outputs. The evaluation board is connected to the PC parallel port using the cable supplied. The cable length should not exceed 6 feets (2 meters) or the serial communication between the PC and the evaluation board may become unpredictable and error prone. When the evaluation board has been powered up and is connected to the PC, the supplied software can be launched. The software will automatically start in energy meter mode. The next section describes the ADE7756 evaluation software in detail and how it can be installed and uninstalled. 5.000 V - + 5.000 V - + 110V 10A 10A 110V V+ V- 1:2000 CT SK2 2.5Ω SH1A AGND SH1B 2.5Ω SK1 25mV SK4 V1P V1N JP1 = Open JP2 = Open JP3 = Open JP4 = Open JP5 = B JP6 = B 25mV JP9 JP7 = Open JP13 = Open JP8 = Open JP14 = Open JP9 = Open JP15 = Closed JP10 = Closed JP19 = B JP11 = Closed JP20 = Closed JP12 = B JP21 = Closed JP25 = Closed R57 1kΩ JP10 V2N C54 33nF 450mV JP7 220V R53 255kΩ JP8 R54 255kΩ C53 33nF V2P 1kΩ 1.0666 Hz SK5 BNC2 To PC Parallel Port Load Load 110V REV. PrB 01/01 Figure 6 - Typical set up for the ADE7756 evaluation board –5– 5 Page PRELIMINARYTECHNICALDATA PRELIMINARY TECHNICAL DATA Evaluationboardschematic(rev.C) EVAL-ADE7756EB REV. PrB 01/01 –11– 11 Page

Páginas	Total 15 Páginas
PDF Descargar	[ Datasheet ADE7756EB.PDF ]

Hoja de datos destacado

Número de pieza	Descripción	Fabricantes
ADE7756EB	Evaluation Board Documentation AD7756 Energy metering IC	Analog Devices

Número de pieza	Descripción	Fabricantes
SLA6805M	High Voltage 3 phase Motor Driver IC.	Sanken
SDC1742	12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.	Analog Devices

DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.

DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar