MAX11410A [MAXIM]

Savable Plots and Register Configurations;


型号：	MAX11410A
厂家：	MAXIM INTEGRATED PRODUCTS
描述：	Savable Plots and Register Configurations
文件：	总20页 (文件大小：5496K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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Evaluates: MAX11410/MAX11410A

MAX11410 Evaluation Kit

General Description

Features

● Easy Evaluation of MAX11410/MAX11410A

The MAX11410 evaluation kit (EV kit) demonstrates the

24-bit multi-channel low-power delta-sigma ADC. The EV

kit includes a graphical user interface (GUI) that provides

communication from the target device to the PC. The GUI

allows the user to conﬁgure all the registers and includes

graphing software to display captured data and calculate

the histogram and FFT.

● USB Powered

●

Selectable On-Board Voltage Reference (2.5V, 1.25V)

● Optional External Clock (2.4576MHz)

● Isolated Power and Digital Communication

● Various Sample Rates and Sample Sizes

● Time Domain, Frequency Domain, and Histogram

EV Kit Contents

● MAX11410 EV kit

● Micro-USB cable

Plotting

● Savable Plots and Register Configurations

● Windows XP , Windows 7, Windows

MAX11410 EV Kit Files

8.1-Compatable Software

● Fully Assembled and Tested

FILE

DESCRIPTION

MAX11410EVKitSetup.exe

Application Program

Ordering Information appears at end of data sheet.

MAX11410 EV Kit Photo

Windows XP and Windows 7 are registered trademarks and registered service marks of Microsoft Corporation.

19-8483; Rev 1; 1/21

Evaluates: MAX11410/MAX11410A

MAX11410 Evaluation Kit

7) Launch the GUI and when it appears it should

automatically connect to the hardware. The GUI

should display EV Kit Hardware Connected in the

lower right hand corner.

Quick Start

Required Equipment

● MAX11410 EV kit

● Windows XP, Windows 7, or Windows 8.1 PC

● Micro-USB cable

8) Connect a signal to the desired inputs (A0–A9) on the

screw connector (J1–J2) using a wire and a screwdriver.

For example, connect the 1.25V

testpoint to A2.

REF

● Screwdriver

9) In the GUI on the ADC Conﬁg tab, select AINP to

AIN2 and AINN to GND for the Channel MUX.

● Wires

Note: In the following sections, software-related items are

identified by bolding. Text in bold refers to items directly

from the EV kit software. Text in bold and underline

refers to items from the Windows operating system.

10) Click Convert and then Click Read Data and Status

to see the converted data.

Detailed Description

Procedure

Software Startup

The EV kit is fully assembled and tested. Follow the steps

below to verify board operation:

When the software is started, it searches for the EV kit

hardware and connects to it if found. If connection to the

EV kit is successful, the GUI displays EV Kit Hardware

Connected in the status bar’s lower-right corner. Then

it writes default registers settings shown in Table 1 and

reads all the registers to display on the GUI.

1) Ensure that the jumpers/shunts are in their default

locations. Refer to Table 2.

2) Prior to starting the GUI, connect the EV kit hardware

to a PC using the supplied micro-USB cable. The

Power LED (DS1) should be green.

Status Log

3) The EV kit hardware is conﬁgured as a HID device

so Windows should automatically begin installing

the necessary drivers. Once the driver installation is

complete, a Windows message appears near the

System Icon menu indicating the hardware is ready

to use. If the GUI was started before this message

appears then restart the GUI.

The Status Log group box below the tabs displays all the

actions the GUI performs. When an action is requested,

the log confirms the action or shows an error message.

The log can be cleared by pressing the Clear Log button.

Table 1. Startup GUI Registers Settings

4) Visit www.maximintegrated.com/evkitsoftware to

download the latest version of the EV kit software,

MAX11410EVKitSetup.ZIP.

SETTING

VALUE

Digital Filter

60Hz SINC4

59.8sps

AIN2

5) Save the EV kit software to a temporary folder. Unzip

the .ZIP ﬁle and double-click the .EXE ﬁle to run the

installer. A message box asking Do you want to allow

the following program to make changes to this

computer? may appear. If so, click Yes.

Sample Rate

MUX - AINP

MUX_AINN

Channel

GND

6) Follow the instructions on the installer and once

complete, click Finish. The default location of the

software is in the program ﬁles directory.

Conversion Mode

Continuous

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ADC Conﬁg Tab

The ADC Config tab provides an interface for configuring the IC from a functional perspective. The Block tab

(Figure 1) provides for configuration of the input MUX, input path, data format, filtering, calibration, reference current

sources, V

, and power. To read all the configuration settings, click the Read All button in the Serial Interface block.

BIAS

When a setting is changed, the register associated with that setting is automatically written. The Status Log at the bottom

of the GUI shows the value and register that was changed. Once the configurations are completed, start conversions by

clicking Convert in the Serial Interface block. To read the data and status, click Read Data and Status on the lower-right

of the GUI. This, first, reads the status register and then the data registers for the channel selected, displaying the value

in volts and hex. For the data in volts to be calculated correctly, the Reference Voltage numeric box on the left should

match the reference applied on the hardware. Note: All voltage values are input referred.

Figure 1. Quick-Start Connection Diagram

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Other Tab

The Other tab sheet (Figure 2) displays the thresholds, wait, GPIO, clock, and INT options. To read all the values on the

tab, click Read All on the bottom right. The Channel Thresholds table allows reads/writes to the upper and lower threshold.

The display unit can be changed to LSB, V, mV, or uV using the Threshold Units drop-down list. The TUR INT and

TOR INT bits for the under and over range interrupts can be enabled by checking the checkbox for the channels desired.

To start a wait time, enter the desired decimal value in the Wait and Wait Extension numeric boxes. Note: Entering a

value in the Wait numeric box does not perform a write to the part. Click Calculate Wait Time to see the equivalent wait

time of these decimal values based on a 2.4576MHz clock. Click Start Wait Time to write the value in the Wait numeric

box and begin the wait time.

Figure 2. EV Kit Software (ADC Config Tab > Other)

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Sequence Tab

The Sequence tab sheet (Figure 3) allows read/writes to the microcode registers (uC0-uC52). Click Read All to read

all microcode registers. To write a register first select the hex value in the Value (Hex) column then type the desired

hex value and press Enter on the keyboard. To start the sequence, enter the hex address of the microcode to start at in

the Sequence Start Address and then click Start Sequence. During a sequence, the current address of the executing

microcode can be read by clicking Read Current Address.

Figure 3. EV Kit Software (ADC Config Tab > Sequence)

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Save/Load ADC Conﬁguration

In the File menu, there are options to save or load a configuration file. Save ADC Config As.. and Save ADC Config

read the registers from the connected MAX11410 EV kit and saves these values to an XML file. This includes the microcode

registers as well. Load ADC Config gets register values from an XML file and writes them to the MA11410 EV kit.

Scope Tab

The Scope tab sheet (Figure 4) is used to capture data and display it in the time domain. Sample rate and number of

samples can also be set in this tab if they were not appropriately adjusted in other tabs. The Display Unit drop-down

list allows LSB and voltages. Once the desired configuration is set, click on the Capture button. The right side of the

tab sheet displays details of the waveform, such as average, standard deviation, maximum, minimum, and fundamental

frequency. To save the captured data to a file, go to Options > Save Graph > Scope. This saves the setting on the left

and the data captured to a csv file.

Figure 4. EV Kit Software (Scope Tab)

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DMM

The DMM tab sheet (Figure 5) provides captured data as a digital multimeter. Once the desired configuration is set, click

the Capture button.

Figure 5. EV Kit Software (DMM Tab)

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Histogram

The Histogram tab sheet (Figure 6) is used to display a histogram of the captured data. Sampling rate and number of

samples can also be set in this tab if they were not appropriately adjusted in other tabs. Once the desired configuration

is set, click on the Capture button. The right side of the tab sheet displays details of the histogram such as average,

standard deviation, maximum, minimum, peak-to-peak noise, effective resolution, and noise-free resolution. To use this

histogram feature, uncheck the Disable Histogram checkbox. To save the histogram data to a file, go to Options > Save

Graph > Histogram. This saves the setting on the left and the histogram data captured to a csv file.

Figure 6. EV Kit Software (Histogram Tab)

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FFT

The FFT tab sheet (Figure 7) is used to display the frequency domain FFT of the captured data. Sample rate and

number of samples can also be set in this tab if they were not appropriately adjusted in other tabs. Once the desired

configuration is set, click on the Capture button. The right side of the tab displays the performance based on the FFT,

such as fundamental frequency, THD, SNR, SINAD, SFDR, ENOB, and noise floor. To save the FFT data to a file, go to

Options > Save Graph > FFT. This saves the setting on the left and the FFT data captured to a csv file.

Figure 7. EV Kit Software (FFT Tab)

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Registers

Reference Voltage

The Registers tab sheet (Figure 8) allows the user to

read/write to the ADC registers in hex format. Click Read

All to read all registers and refresh the window with the

value in the Value (Hex) column then type the desired

hex value and press Enter on the keyboard. The Bit

Description section shows the format of the register

selected in the Registers table.

The ADC has three pairs of REFP/REFN pins to select

as reference pins. In the GUI, go to the Block tab on the

ADC Config tab and select the desired reference pins in

the Reference block. When using the on-board voltage

reference, move JP7 to the same REFXP selected in the

GUI. If using REF0N, connect A1 on the screw terminal

to GND or remove the AIN1 jumper on JP8 and connect

AIN1 to GND. The default reference value is set to 2.5V.

The EV kit also provides a reference of 1.25V by moving

Detailed Description of Hardware

JP6 to 1.25V

and changing the Reference Voltage to

REF

The EV kit hardware includes the MAX11410 ADC,

external reference (MAX6072), digital isolator

(MAX14935), microcontroller (MAXQ622), isolated power,

and jumpers to customize the configuration. See the links

at the end of this data sheet for component information,

PCB layout diagrams, and schematic.

1.25V on the ADC Config tab.

If using a user-supplied voltage reference, remove all

jumpers on JP7, JP10, and JP11 and supply the reference

on the REFXP and REFXN testpoints. If using REF0P/

REF0N connect the reference to A0/A1 on the screw

terminal or remove the AIN0/AIN1 jumpers on JP8 and

supplied the voltage on AIN0/AIN1 pins. In the GUI,

change the Reference Voltage on the ADC Config tab

to the user-supplied voltage.

Figure 8. EV Kit Software (Registers Tab)

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ADC Inputs

EV Kit Power

The ADC inputs at the screw terminal (J1, J2) have series

1kΩ input protection resistors. To bypass these resistors,

remove the jumpers on JP8 and connect to the AINX pin

on the right.

By default the EV kit is configured to power from the USB

5V. To power the board externally, first disconnect the

USB. Then move JP14 to EXT_5V and connect 5V to the

EXT_5V testpoint or to the power jack J6. Connect the

USB for communication with the GUI.

External Clock

Power

DUT

powers the ADC and one side of the digital isolator. By

The ADC can be configured to use an external clock. In

the GUI, go to the Other tab on the ADC Config tab and

change the clock to External using the Clock drop-down

list. To use the on-board oscillator, move a jumper to the

CLK position on JP4. To connect a user-supplied clock,

remove any jumper on JP4 and connect the signal to the

GPIO0/CLK testpoint.

DUT

default V

is connected to V

, which is the output

DUT

ADJ

of an adjustable LDO (MAX8842) set to 3.3V. To adjust

, change resistors R80 and R81 according to the

ADJ

equation below for the desired output. Ensure V

ADJ

within the range 3.6V to 2.8V as the minimum voltage for

the MAX6072 is 2.8V and the maximum voltage for the

MAX11410 is 3.6V.

GPIO

Testpoints and jumpers are provided for the two GPIO

signals. To set the input/output modes of the GPIO go to

the Other tab on the ADC Config tab. If the GPIOs are

set as inputs the jumpers JP5 and JP4 can be used to

set the inputs high or low. See Table 2. Each GPIO has

a 100kΩ resistor to GND on the EV kit. GPIO0 has an

added option be being set to an external clock. See the

External Clock section.

= 1.225V x (R80/R81 + 1)

ADJ

DUT

can also be power externally with EXT_VDUT test

point. To power externally, move JP12 to EXT_DUT and

provide a voltage (3.6V to 2.7V) on the test point.

User-Supplied SPI

To evaluate the ADC on this EV kit with a user-supplied

SPI bus, disconnect digital signals from the isolator by

removed resistors R50–R53. Apply the user-supplied

SPI signals to CSB, MOSI, MISO, and SCLK at the SPI

and GPIO Header (J5). Make sure the return ground is

connected to GND on the EV kit.

Table 2. Description of Jumpers

JUMPER

JUMPER NAME

JUMPER POSITION

DESCRIPTION

JP1

Short*

Connects on-board V

to AV

DDREG

DUT

JP2

Short*

to V

DDREG

DDIO

JP3

Short*

to V

DDIO

Sets GPIO0 high (V

) Note 1

DDIO

JP4

GPIO0/CLK

GPIO1

CLK

Provides an external clock to GPIO0/CLK

Sets GPIO0 low (GND)

GND

Sets GPIO1 high (V

) Note 1

DDIO

JP5

JP6

GND

Sets GPIO1 low (GND)

2.5V

Sets V

to 2.5V

REF

1.25V

Sets V

to 1.25V

REF

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Table 2. Description of Jumpers (continued)

JUMPER

JUMPER NAME

JUMPER POSITION

DESCRIPTION

REF0P

Sets REF0P(AIN0) to V

REF

JP7

REFP

REF1P*

REF2P

Sets REF1P to V

Sets REF2P to V

REF

JP8

JP9

AINX

Short*

Connects AINX input to screw terminal through 1kΩ resistor

Connects REFXP input to screw terminal through 1kΩ resistor

Sets REF1N to GND

REFXP

REF1N

REF2N

Short*

JP10

JP11

Short*

Sets REF2N to GND

EXT_VDUT

is powered from external EXT_VDUT test point

DUT

JP12

JP13

JP14

DUT

is powered from on-board V

ADJ

DUT

5V ENABLE

POWER

Short*

Enabled 5V from transformer T1

EXT_5V

Board is powered from external EXT_5V test point or J6 power jack

Board is powered from USB 5V

USB

Ordering Information

PART

TYPE

MAX11410EVKIT#

EV Kit

#Denotes RoHS compliant.

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MAX11410 EV Kit Bill of Materials

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MAX11410 Evaluation Kit

MAX11410 EV Kit Bill of Materials (continued)

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MAX11410 EV Kit Schematics

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MAX11410 Evaluation Kit

MAX11410 EV Kit Schematics (continued)

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MAX11410 EV Kit Schematics (continued)

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MAX11410 Evaluation Kit

MAX11410 EV Kit PCB Layouts

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MAX11410 Evaluation Kit

MAX11410 EV Kit PCB Layouts (continued)

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MAX11410 Evaluation Kit

Revision History

REVISION REVISION

PAGES

CHANGED

DESCRIPTION

NUMBER

DATE

3/16

1/21

Initial release

—

Added part numer MAX11410A to the title and Feature section

1–20

For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.

Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses

are implied. Maxim Integrated reserves the right to change the circuitry and speciﬁcations without notice at any time.

Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.

2021 Maxim Integrated Products, Inc.

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MAX11410A [MAXIM]

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