Maxim Integrated MAX86140 User Manual

Maxim Integrated MAX86140 User Manual

Evaluation system

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MAX86140/MAX86141
Evaluation System

General Description

The MAX86140/MAX86141 Evaluation System (EVSYS)
allows for the quick evaluation of the MAX86140 and
MAX86141 optical AFE for applications at various sites
on the body, particularly the wrist. Both MAX86140 and
MAX86141 supports standard SPI compatible interface.
MAX86140 consists of a single optical readout channels,
while MAX86141 has two optical readout channels that
operate simultaneously. The EVSYS allows flexible
configurations to optimize measurement signal quality
at minimal power consumption. The EVSYS helps the
user quickly learn about how to configure and use the
MAX86140 and MAX86141.
The EVSYS consists of three boards. MAXSensor
BLEEK# is the main data acquisition board while
MAX86140OSBEK# and MAX86141OSBEK# are the
sensor daughter boards for MAX86140 and MAX86141
respectively. The EVSYS can be powered using the
USB-C supply or LiPo Battery.
The EVSYS comes with a MAX86140ENP+/MAX86141-ENP+
in a 24-bump wafer-level package (WLP).

Features

● Quick Evaluation of the MAX86140/MAX86141
● Supports Optimization of Configurations
● Facilitates Understanding MAX86140/MAX86141
Architecture and Solution Strategy
● Real-time Monitoring
● Data Logging Capabilities
● On-Board Accelerometer
● Bluetooth LE
appears at end of data sheet.
319-100050; Rev 1; 10/18
Evaluates: MAX86140 and MAX86141

Quick Start

Required Equipment

MAX86140 EVSYS
Data Acquisition EVSYS Micro-PCB
(MAXSensorBLEEK#)
MAX86140 EVSYS Sensor PCB
(MAX86140OSBEK#)
MAX86141 EVSYS Sensor PCB
(MAX86141OSBEK#)
Flex cable
USB-C cable
MAX86140 EVSYS GUI Software
MAX86140 Parser and User guide (included in
MAX86140GUISetupVxxx.ZIP)
Windows PC
Required Bluetooth LE Dongle
(not shipped with EVSYS)
Optional LiPo Battery
shipped with EVSYS)
Note: If you do not already have one of the listed BLE dongles
above, purchasing one is recommended.
Procedure
1) The EVSYS is fully assembled and tested. Follow
the steps below to verify board operation:
www.maximintegrated.com/evkit-software
Visit
to download the most recent version of the EVSYS
software, MAX86140GUISetupVxxx_Web.ZIP. Save
the EVSYS software to a temporary folder and
decompress the ZIP file.
2) Plugged in the BLE dongle to one of the USB port on
the PC.
3) Open up MAX86140GUISetupVxxx.exe and follow
the instructions from the pop-up windows, as shown
in
Figure 1
to
Figure
4) The BLE Dongle driver installation will also be completed
after the GUI installation, as shown in
5) If the MAX86140 EVSYS flex cable is not already
connecting the Data Acquisition EVSYS Micro PCB
to the MAX86140 or MAX86141 Sensor PCB, then
please connect the two PCBs with the cable as
shown in
Figure 9
Figure
12.
CY5677
or
CY5670
(LP-401230
suggested, not
7.
Figure
and
Figure 10
or
Figure 11
8.
and

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Summary of Contents for Maxim Integrated MAX86140

  • Page 1: General Description

    Figure Ordering Information appears at end of data sheet. 5) If the MAX86140 EVSYS flex cable is not already connecting the Data Acquisition EVSYS Micro PCB to the MAX86140 or MAX86141 Sensor PCB, then please connect the two PCBs with the cable as...
  • Page 2 10) When running, the LEDs on the Micro PCB should 7) After that, start the MAX86140 EVSYS GUI program. illuminate and the plots on the GUI should stream “Connect Device” will appears, choose your device with data as shown in...
  • Page 3 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System Figure 2. Setup MAX86140 EVSYS GUI Software Step 2 Maxim Integrated │ 3 www.maximintegrated.com...
  • Page 4 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System Figure 3. Setup MAX86140 EVSYS GUI Software Step 3 Maxim Integrated │ 4 www.maximintegrated.com...
  • Page 5 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System Figure 4. Setup MAX86140 EVSYS GUI Software Step 4 Maxim Integrated │ 5 www.maximintegrated.com...
  • Page 6 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System Figure 5. Setup MAX86140 EVSYS GUI Software Step 5 Maxim Integrated │ 6 www.maximintegrated.com...
  • Page 7 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System Figure 6. Setup MAX86140 EVSYS GUI Software Step 6 Maxim Integrated │ 7 www.maximintegrated.com...
  • Page 8 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System Figure 7. Setup MAX86140 EVSYS GUI Software Step 7 Maxim Integrated │ 8 www.maximintegrated.com...
  • Page 9 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System Figure 8. BLE Dongle Driver Installation Figure 9. Hardware Setup (MAX86140 EVSYS Micro-PCB) Maxim Integrated │ 9 www.maximintegrated.com...
  • Page 10 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System Figure 10. Hardware Setup (MAX86140 EVSYS Sensor PCB) Figure 11. Hardware Setup (MAX86141 EVSYS Micro PCB) Maxim Integrated │ 10 www.maximintegrated.com...
  • Page 11 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System Figure 12. Hardware Setup (MAX86141 EVSYS Sensor PCB) Figure 13. Connect to BLE Device Maxim Integrated │ 11 www.maximintegrated.com...
  • Page 12 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System Figure 14. MAX86140 EVSYS GUI Maxim Integrated │ 12 www.maximintegrated.com...
  • Page 13 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System Figure 15. MAX86140 EVSYS GUI (PPG Plots) Maxim Integrated │ 13 www.maximintegrated.com...
  • Page 14 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System Figure 16. MAX86140 EVSYS GUI (Accelerometer Plots) Maxim Integrated │ 14 www.maximintegrated.com...
  • Page 15 WITHOUT Table 1 Table 2 shows the maximum supported # OF SEQUENCES sampling rates (in Sps) for the MAX86140 and MAX86141 1000 respectively for the given number of exposure sequences 1000 and use of accelerometer. The maximum sample rate is limited by the BLE protocol, not the AFE itself.
  • Page 16 PDBIAS is Various options of GPIO controls are available on configured depending on the Capacitance (CPD) of the MAX86140. For the EVSYS, when set to GPIO options photodiode used. 2, the sample rate will be triggered by the on-board Note: PD2 configuration is only available for MAX86141.
  • Page 17: System Control

    The GUI enables/disables flash logging. The GUI can Please refer to the MAX86140/MAX86141 datasheet be disconnected while flash logging, allowing for remote under Proximity Mode Section for details. operation (PPG Plots not available). Preparing the flash System Control memory can take up to 30s after enabling.
  • Page 18 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System Figure 17. Register Map Access Maxim Integrated │ 18 www.maximintegrated.com...
  • Page 19: Power Switch

    Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System Detailed Description of Hardware Note that flash logging indication takes precedence over the charging indication. I.e., if the device is plugged into Status LED Indicators a charger, the red LED indicates charge status. If flash The onboard tri-color LEDs are use as status indicator.
  • Page 20 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System MAX86140/MAX86141 EV Kit Bill of Materials MAXSENSORBLEEK# ITEM REF_DES DNI/DNP QTY MFG PART # MANUFACTURER VALUE DESCRIPTION COMMENTS ANTENNA; 2450AT SERIES; BOARDMOUNT; 1 2450AT18A100 JOHANSON TECHNOLOGY 2450AT18A100 MINI 2.45 GHZ ANTENNA; 2450MHZ CONNECTOR; MALE; THROUGH HOLE;...
  • Page 21 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System MAX86140/MAX86141 EV Kit Bill of Materials (continued) MAXSENSORBLEEK# ITEM REF_DES DNI/DNP QTY MFG PART # MANUFACTURER VALUE DESCRIPTION COMMENTS THERMISTOR; SMT (0402); THICK FILM 1 NCP15XH103F03RC MURATA (NICKEL PLATED); 10K; TOL=+/-1% RESISTOR; 0201; 261K OHM; 1%; 200PPM;...
  • Page 22 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System MAX86140/MAX86141 EV Kit Bill of Materials (continued) MAX86140OSBEK# ITEM REF_DES DNI/DNP QTY MFG PART # MANUFACTURER VALUE DESCRIPTION COMMENTS C1-C3, C5, CAPACITOR; SMT (0402); CERAMIC CHIP; 6 GRM155R60J226ME11 MURATA 22UF C6, C9 22UF; 6.3V; TOL=20%; TC=X5R CAPACITOR;...
  • Page 23 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System MAX86140/MAX86141 EV Kit Schematics MAXSensorBLE Maxim Integrated │ 23 www.maximintegrated.com...
  • Page 24 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System MAX86140/MAX86141 EV Kit Schematics (continued) MAXSensorBLE 32MHZ Maxim Integrated │ 24 www.maximintegrated.com...
  • Page 25 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System MAX86140/MAX86141 EV Kit Schematics (continued) MAXSensorBLE Maxim Integrated │ 25 www.maximintegrated.com...
  • Page 26 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System MAX86140/MAX86141 EV Kit Schematics (continued) MAXSensorBLE Maxim Integrated │ 26 www.maximintegrated.com...
  • Page 27 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System MAX86140/MAX86141 EV Kit Schematics (continued) MAX86140_OSB_EVKIT Maxim Integrated │ 27 www.maximintegrated.com...
  • Page 28 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System MAX86140/MAX86141 EV Kit Schematics (continued) MAX86141_OSB_EVKIT Maxim Integrated │ 28 www.maximintegrated.com...
  • Page 29 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System MAX86140/MAX86141 EV Kit PCB Layout Diagrams MAXSensorBLE_EVKIT MAXSensorBLE_EVKIT—Silk_Top MAXSensorBLE_EVKIT—Top MAXSensorBLE_EVKIT—L02_GND MAXSensorBLE_EVKIT—L03_SIGS MAXSensorBLE_EVKIT—L04_SIGS MAXSensorBLE_EVKIT—L05_SIGS Maxim Integrated │ 29 www.maximintegrated.com...
  • Page 30 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System MAX86140/MAX86141 EV Kit PCB Layout Diagrams (continued) MAXSensorBLE_EVKIT MAXSensorBLE_EVKIT—L06_SIGS MAXSensorBLE_EVKIT—L07_SIGS MAXSensorBLE_EVKIT—L08_SIGS MAXSensorBLE_EVKIT—L09_GND Maxim Integrated │ 30 www.maximintegrated.com...
  • Page 31 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System MAX86140/MAX86141 EV Kit PCB Layout Diagrams (continued) MAXSensorBLE_EVKIT MAXSensorBLE_EVKIT—L10_SIGS MAXSensorBLE_EVKIT—L11_GND MAXSensorBLE_EVKIT—BOTTOM MAXSensorBLE_EVKIT—SILK_BOT Maxim Integrated │ 31 www.maximintegrated.com...
  • Page 32 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System MAX86140/MAX86141 EV Kit PCB Layout Diagrams (continued) MAX86140_OSB_EVKIT MAX86140OSBEK#—SILK_TOP MAX86140OSBEK#—Top MAX86140OSBEK#—L02_GND Maxim Integrated │ 32 www.maximintegrated.com...
  • Page 33 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System MAX86140/MAX86141 EV Kit PCB Layout Diagrams (continued) MAX86140_OSB_EVKIT MAX86140OSBEK#— L03_SIG MAX86140OSBEK#—BOTTOM Maxim Integrated │ 33 www.maximintegrated.com...
  • Page 34 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System MAX86140/MAX86141 EV Kit PCB Layout Diagrams (continued) MAX86141_OSB_EVKIT MAX86141OSBEK#—Silk_Top MAX86141OSBEK#—Top MAX86141OSBEK#—L02_GND Maxim Integrated │ 34 www.maximintegrated.com...
  • Page 35 Evaluates: MAX86140 and MAX86141 MAX86140/MAX86141 Evaluation System MAX86140/MAX86141 EV Kit PCB Layout Diagrams (continued) MAX86141_OSB_EVKIT MAX86141OSBEK#—L03_SIG MAX86141OSBEK#—L04 SIG Maxim Integrated │ 35 www.maximintegrated.com...
  • Page 36: Revision History

    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.
  • Page 37 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Maxim Integrated MAX86140EVSYS#...

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