EVAL-ADE7878EBZ Analog Devices Inc, EVAL-ADE7878EBZ Datasheet - Page 5

• Manufacturer Part Number: EVAL-ADE7878EBZ
• Description: Energy Meter Eval. Board
• Manufacturer: Analog Devices Inc

Specifications of EVAL-ADE7878EBZ

• Silicon Manufacturer: Analog Devices
• Application Sub Type: Energy Meter
• Kit Application Type: Data Converter
• Silicon Core Number: ADE7878
• Features: External Transducers, LED Indicators, Logic Outputs
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q4472972; Q4684026; Q5015773

Preliminary Technical Data
Jumper
JP10
JP11
JP12
JP35, JP33
JP31, JP37
JP36, JP34,
JP32, JP38
SETTING UP THE EVALUATION BOARD AS AN
ENERGY METER
Figure 5 shows a typical setup for the ADE7878 evaluation
board. In this example, an energy meter for a 4 wire, three phase
distribution system is shown. Current transformers are used to
sense the phase and neutral currents and are connected as
shown in Figure 5. The line voltages are connected directly to
the evaluation board as shown. Note the state of all jumpers
must match the indication in Figure 5 and the fact the board is
supplied from two different 3.3V power supplies, one for the
ADE7878 domain, VDD, and one for LPC2368 domain,
MCU_VDD. As the two domains are isolated to ensure there is
no electrical connection between the high voltage test circuit
Option
open
soldered to pin
1
soldered to pin
3 (AGND)
open
open
closed with 0Ω
resistors
Description
It connects external voltage reference to ADE7878. By default, it is open.
It connects CLKIN pin of ADE7878 to 16.384MHz crystal (pin 1 of JP11) or to an external clock input
provided at J1. By default, it is soldered to pin 1.
It connects DGND (pin 2 of JP12) of ADE7878 to Earth (pin 1 of JP12) or to AGND (pin 3 of JP12).
If I2C communication between LPC2368 and ADE7878 is used, these connectors should be closed with
0Ω resistors. In this case, JP36 and JP34 connectors should be opened. By default, the SPI is the
communication used between LPC2368 and ADE7878, so these connectors are open.
If HSDC communication is used, then these connectors should be closed with 0Ω resistors. In this case,
JP35 and JP33 connectors should also be closed. By default, the SPI is the communication used between
LPC2368 and ADE7878, so these connectors are open.
If SPI communication is used between LPC2368 and ADE7878, these connectors should be closed and
JP35, JP33, JP31, JP37 should be opened. By default, the SPI is the communication used between
LPC2368 and ADE7878, so these connectors are closed.
Rev. PrB | Page 5 of 30
and the control circuit, the power supplies should have floating
voltage outputs.
The evaluation board is connected to the PC using a regular
USB cable supplied with the board. When the evaluation board
has been powered up and is connected to the PC, the
enumeration process begins and the PC recognizes new
hardware and asks to install the appropriate driver. The driver
is found in VirCOM_Driver_XP folder of the CD. After the
driver has been installed, the supplied evaluation software can
be launched. The next section describes the ADE7878
evaluation software in detail and how it can be installed and
uninstalled.
EVAL-ADE7878EB