MAX71020AEVK1#
Evaluates: MAX71020A
General Description
The MAX71020AEVK1# evaluation kit (EV kit) demon-
strates the capabilities of the MAX71020A embedded
energy measurement (EM) device. The EVK can mea-
sure AC and/or DC current and voltage utilizing a surface
mount resistive shunt and resistive voltage divider.
The EV kit provides an isolated SPI interface to the device
over USB. A provided Windows
®
graphical user interface
(GUI) handles translation from the USB to device-specific
SPI protocols.
Benefits and Features
●
Allows Evaluation of the MAX71020A Embedded
Energy Measurement Device in a Safe and Simple
Manner
• Isolated SPI/USB for User Safety
• Windows Graphical User Interface (GUI) Handles
All Common Tasks
• Easy Hook Up to Test Equipment or Other Test
Environments
• Fully Assembled and Tested
• Precalibrated with Utility Meter Grade Equipment
●
Highly Accurate AFE for Testing
• AC 2000:1 Dynamic Current Range at 0.5% Accuracy
• DC Voltage and/or Current Measurement
SAFETY AND ESD NOTES
THE DEMO SYSTEM IS ESD SENSITIVE! TAKE ESD PRECAUTIONS WHEN HANDLING THE DEMO
BOARD! CONNECTING LIVE VOLTAGES TO THE DEMO BOARD SYSTEM WILL RESULT IN POTENTIALLY
HAZARDOUS VOLTAGES ON THE DEMO BOARD.
TAKE EXTREME CAUTION WHEN HANDLING THE DEMO BOARD AFTER IT IS CONNECTED TO LIVE
VOLTAGES! BOARD GROUND IS DIRECTLY CONNECTED TO LINE VOLTAGE! ANY TEST EQUIPMENT
CONNECTED TO THE DEMO BOARD WHEN THE BOARD IS CONNECTED TO LIVE VOLTAGES MUST
BE ELECTRICALLY ISOLATED FROM THE AC MAINS. FAILURE TO OBSERVE THIS MAY RESULT IN
DESTRUCTION OF THE DEMO BOARD AND THE TEST EQUIPMENT, AND IN PERSONAL INJURY OR
DEATH.
Windows is a registered trademark of Microsoft Corp.
Ordering Information
appears at end of data sheet.
19-7666; Rev 0; 6/15
MAX71020AEVK1#
Evaluates: MAX71020A
EV Kit Contents
●
1x MAX71020 EM REV 3 evaluation board
●
1x USB A to B cable
●
USB flash drive with relevant collateral
Connection and Jumper Descriptions
The PCB has several jumpers and connections to allow
measurement and communication with an external host.
Table 1. Connections and Jumpers
NAME
J1
J17
J18
J19
J20
J54
J57
J58
J59
J56
J55
J49
J50
J16
J60
DEFAULT
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
N/A
N/A
N/A
N/A
N/A
N/A
DESCRIPTION
Selects isolated USB power
(1-2 default) supply
SCK connection jumper
MOSI connection jumper
SSB connection jumper
MISO connection jumper
Grounds VB/XTEMP
Connects neutral AC current source
to Neutral AC voltage source
Grounds IBP/DC reference
Grounds IBN/DC reference
Neutral AC current-source
connection
Neutral AC current load connection
Neutral AC voltage source
connection (optional)
Line AC voltage connection
External isolated SPI headers
MAX71020 DIO headers
www.maximintegrated.com
Maxim Integrated
│
2
MAX71020AEVK1#
Evaluates: MAX71020A
MAX71020A PCB Layout
www.maximintegrated.com
Maxim Integrated
│
3
MAX71020AEVK1#
Evaluates: MAX71020A
Block Diagram
ADC REFERENCE /GND
VOLTAGE SENSE
DC
REFERENCE
AUX ADC INPUT
MAX71020A
CURRENT
SENSE
DIO
SPI
ISOLATION
POWER
FTDI
USB to SPI device
SPI
USB To Host PC
www.maximintegrated.com
Maxim Integrated
│
4
MAX71020AEVK1#
Evaluates: MAX71020A
Figure 1. MAX71020A EV Board Layout—Top Layer
www.maximintegrated.com
Maxim Integrated
│
5
微控制器 MCU
