Maxim Integrated MAX86140, MAX86141 User Manual

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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 exible
congurations to optimize measurement signal quality

at minimal power consumption. The EVSYS helps the

user quickly learn about how to congure 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).

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 CY5677 or CY5670

(not shipped with EVSYS)

● Optional LiPo Battery (LP-401230 suggested, not

shipped with EVSYS)

Note: If you do not already have one of the listed BLE dongles
above, purchasing one is recommended.

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

Ordering Information appears at end of data sheet.

Procedure

1) The EVSYS is fully assembled and tested. Follow
the steps below to verify board operation:
Visit www.maximintegrated.com/evkit-software
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 le.

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 7.

4) The BLE Dongle driver installation will also be completed
after the GUI installation, as shown in Figure 8.

5) If the MAX86140 EVSYS ex 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 and Figure 10 or Figure 11 and

Figure 12.

319-100050; Rev 1; 10/18

MAX86140/MAX86141
Evaluation System

Evaluates: MAX86140 and MAX86141

6) Connect USB-C cable or LiPo Battery to the Data
Acquisition Board to power up the EVSYS. If LiPo
battery is used, press the power switch (SW) to turn

on/o󰀨 the device. When powered on, the green LED

will toggle.

7) After that, start the MAX86140 EVSYS GUI program.
“Connect Device” will appears, choose your device
and press “Connect” as shown in Figure 11.

8) The GUI will then be launched as shown in Figure 12.

9) Congure the EVSYS on the GUI and Click on the

<Start> button on the bottom left side to start the
data acquisition.

10) When running, the LEDs on the Micro PCB should
illuminate and the plots on the GUI should stream
with data as shown in Figure 13 and Figure 14.

Figure 1. Setup MAX86140 EVSYS GUI Software Step 1

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Evaluation System

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Figure 2. Setup MAX86140 EVSYS GUI Software Step 2

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Evaluation System

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Figure 3. Setup MAX86140 EVSYS GUI Software Step 3

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Evaluation System

Evaluates: MAX86140 and MAX86141

Figure 4. Setup MAX86140 EVSYS GUI Software Step 4

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Evaluation System

Evaluates: MAX86140 and MAX86141

Figure 5. Setup MAX86140 EVSYS GUI Software Step 5

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Evaluation System

Evaluates: MAX86140 and MAX86141

Figure 6. Setup MAX86140 EVSYS GUI Software Step 6

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Evaluation System

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Figure 7. Setup MAX86140 EVSYS GUI Software Step 7

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MAX86140/MAX86141
Evaluation System

Figure 8. BLE Dongle Driver Installation

Evaluates: MAX86140 and MAX86141

Figure 9. Hardware Setup (MAX86140 EVSYS Micro-PCB)

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Figure 10. Hardware Setup (MAX86140 EVSYS Sensor PCB)

Figure 11. Hardware Setup (MAX86141 EVSYS Micro PCB)

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Figure 12. Hardware Setup (MAX86141 EVSYS Sensor PCB)

Figure 13. Connect to BLE Device

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Evaluation System

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Figure 14. MAX86140 EVSYS GUI

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Evaluation System

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Figure 15. MAX86140 EVSYS GUI (PPG Plots)

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Evaluation System

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Figure 16. MAX86140 EVSYS GUI (Accelerometer Plots)

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Evaluation System

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Detailed Description of Software

The EVSYS includes two sensor PCBs. Each
contains MAX86140/MAX86141 optical AFE, a

3-axis accelerometer together with a photodiode(s)
and LED(s). MAX86140_OSB_EVSYS comes with a

discreet photodiode (VEMD5080X01) and two green
LEDs (Osram CT DBLP31.12-5C8C-56-J6Q6), while

MAX86141_OSB_EVSYS comes with two discreet

photodiodes (VEMD5080X01), and a green LED (Osram
CT DBLP31.12-5C8C-56-J6Q6). The EVSYS allows raw
optical and accelerometer data to be sampled and
transferred to the GUI for both dynamic viewing and logging
for later analysis. The EVSYS micro controller PCB is used
to do SPI to BLE communication, transporting the raw
optical and accelerometer data to the PC via BLE.

Most functionality of the MAX86140/MAX86141 has
been mapped to the GUI so the wide variety of applicati ons
supported by the MAX86140/MAX86141 can be
rapidly explored. The following is a brief description of this
functionality options.

Sample Rate

The sample rate can take on values between 8 to
4096sps. The dual pulse mode option are modes where
the samples are unevenly spaced and averaged to
improve the ambient rejection of mains line rate ambient
signals.

Table 1 and Table 2 shows the maximum supported

sampling rates (in Sps) for the MAX86140 and MAX86141

respectively for the given number of exposure sequences
and use of accelerometer. The maximum sample rate is

limited by the BLE protocol, not the AFE itself.

For a given sample rate, the number listed can be

increased to the next available MAX86140/MAX86141
sample rate (i.e., 500Sps → 512Sps).

Integration Pulse Width

The pulse width setting adjusts the integration time of an

exposure. The MAX86140\MAX86141 supports exposure
integration times of 14.8μs, 29.4μs, 58.7μs, and 117.3μs.
The exposure pulse width is a critical parameter in any
optical measurement. Longer exposures allow for more

optical photons to be integrated but also increase system
power and reduce ambient rejection capability.

Burst Rate

When Burst Mode is disabled, PPG data conversions

are continuous at the sample rate dened by PPG_SR

register, When Burst mode is enabled, a burst of PPG

data conversions occurs at the sample rate dened by

Sample Rate (PPG_SR) register. Number of conversion
in the burst is dened by the SMP_AVE register. Average

data from the burst of data conversions is pushed to the
FIFO at the rate of burst average rate. The burst repeats

at the rate of 8, 32, 84, or 256Hz can be congured in
burst average eld. The burst average rate eld denes

the rate at which data is pushed into the FIFO. If the
number of conversions cannot be accommodated, the

device will use the next highest number of conversions. If
the e󰀨ective sample rate is too slow to accommodate the
burst rate programmed, BURST_EN is automatically set

to 0, and the device runs in continuous mode.

Ambient Light Cancellation

The on-chip Ambient Light Cancellation incorporates a
proprietary scheme to cancel ambient light generated
photo diode current, allowing the sensor to work in high
ambient light conditions.

ADC Full-Scale Range

The MAX86140\MAX86141 optical channel has 4 full­scale ranges. These ranges are 4μA, 8μA, 16μA, and
32μA.

Table 1. MAX86140 Max Sample Rates
(Sps)

ACCELEROMETER

# OF SEQUENCES

1 500 1000

2 500 1000

3 250 500

4 250 500

5 125 250

6 125 250

WITH WITHOUT

Table 2. MAX86141 Max Sample Rates
(Sps)

ACCELEROMETER

# OF SEQUENCES

1 500 1000

2 250 500

3 125 250

4 125 125

5 125 125

6 62.5 125

WITH WITHOUT

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Sample Average

The MAX86140\MAX86141 has the capability to do

sample averaging of 2 ~ 128 samples internally. This
feature is useful if more optical energy is needed to make
a low perfusion measurement but the data rate across the
interface or the processing power in a host micro is not
desirable. This mode is also useful to further suppress the
mains line noises in indoor lighting conditions.

PD Bias

The MAX86140\MAX86141 provides multiple photo diode
biasing options. These options allow the MAX86140\

MAX86141 to operate with a large range of photo diode

capacitance. The PDBIAS values adjust the PD_IN bias

point impedance to ensure that the photo diode settles
rapidly enough to support the sample timing. PDBIAS is

congured depending on the Capacitance (CPD) of the

photodiode used.

Note: PD2 conguration is only available for MAX86141.

LED Sequence Control (FIFO Time Slots)

The LED Sequence Control species the data acquisition

sequence that the internal state machine controller will
follow and where the converted data will be mapped into
the FIFO.

Each FIFO eld can be applied to one measurement.

Acquired data can be from LED1, LED2, or LED3 (optical

exposure from LED1~3) illuminated independently.

The LED1&LED2, LED1&LED3, LED2&LED3, and

LED1&LED2&LED3 are optical exposures from LEDs

illuminated simultaneously. The other options are Ambient

(optical data with no exposure, just ambient illumination)
or None (skip this acquisition). The LED4-6 (Mux Control)

are not supported with the sensor PCB. If a custom sensor
board with MUX is used, LED4, LED5 and LED6 can also

be congured. Only LED1 and LED2 are available in this

EVSYS.

The exposure sequence will be the entry in Sequence

1 (LEDC1) slot, Sequence 2 (LEDC 2) slot, Sequence 3
(LEDC3), Sequence 4 (LEDC4), Sequence 5 (LEDC5)
slot then Sequence 6 (LEDC6) slot. This sequence
will repeat for each sample instance. Each Sequence

if programmed, will be plot in the PPG Plot x tabs

respectively as shown in Figure 15.

Please refer to the MAX86140/MAX86141 datasheet

under FIFO Conguration Section for details.

LED Driver Congurations

Each of the three LED drivers has a Range and Peak
LED Current setting. There are 4 full-scale range settings
31mA, 62mA, 93mA and 124mA. Each range has an 8-bit

current source DAC. The Peak LED Current box allows

for an actual current to be entered. The nearest available

DAC current is selected and displayed in the eld.

LED Settling Time

The LED Settling Time is the time prior to the start of
integration (pulse-width setting) that the LED is turned

on. There are four settlings, 12μs, 8μs, 6μs and 4μs. This

time is necessary to allow the LED driver to settle before

integrating the exposure photo current.

GPIO Control

Various options of GPIO controls are available on
MAX86140. For the EVSYS, when set to GPIO options
2, the sample rate will be triggered by the on-board
accelerometer.

Please refer to the MAX86140/MAX86141 datasheet

under GPIO Conguration Section for details.

Accelerometer Conguration

The on-board accelerometer can be enabled or disabled
by using the GUI. Supported accelerometer Full-Scale
Range are ±2g, ±4g, ±8g and ±16g. The output data of

the accelerometer can also be congured from 15.63Hz
to 2000Hz when used with GPIO Control Option 2.

Picket Fence Conguration

Under typical situations, the rate of change of ambient

light is such that the ambient signal level during exposure

can be accurately predicted and high levels of ambient
rejection are obtained. However, it is possible to have

situations where the ambient light level changes extremely
rapidly, for example when in a car with direct sunlight
exposure passes under a bridge and into a dark shadow.

In these situations, it is possible for the on-chip ambient
light correction (ALC) circuit to fail and produce and
erroneous estimation of the ambient light during the

exposure interval. The optical controller has a built-in

algorithm, called the picket fence function, that can

correct for these extreme conditions on the ALC circuit.

Please refer to the MAX86140/MAX86141 datasheet
under Picket Fence Detect-and-Replace Function Section
for details.

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Evaluation System

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Proximity Conguration

The optical controller also includes an optical proximity
function which could signicantly reduce energy
consumption and extend battery life when the sensor is

not in contact with the skin.

Please refer to the MAX86140/MAX86141 datasheet

under Proximity Mode Section for details.

System Control

When MAX86141 is used, there is option to use single PD
(PD1) or Dual PD simultaneously (PD1 and PD2). When
Dual PD mode is used, the data log will shows data from

both PD for each congured sequence.

<Start >/<Stop > Button

The <Start Monitor> button is used to start data acquisition
from the demo. The <Start Monitor> button will only be

e󰀨ective when the EVSYS is connected and detected.

Once the <Start > has been pushed the <Stop> button
appears, which can be used to stop the acquisition.
Once the acquisition has started, all settings are locked.
Terminate the acquisition to change any settling.

<Reset> Button

The <Reset> button will clear out all register settlings
back to the programs start up.

Data Logging

Raw optical and accelerometer data can be logged from
the <Logging> pull-down menu item. There are two

options available: Data saved to le or in the ash. When
“le” data logging is selected, the GUI asks for a folder
location where the logging le will be saved. Create a

new folder or accept the default. Data logging will start on

the next <Start> button and will continue until the <Stop
> button is pressed. The nal le write is only done when

the <File> pull-down menu item is accessed and the data­logging button is pressed.

Flash logging allows raw sensor data to be stored to

the integrated 32MB ash memory chip in a binary le
format. The max duration for ash logging is dependent

on: sample rate, number of optical channels, and use of
accelerometer.

The GUI enables/disables ash logging. The GUI can
be disconnected while ash logging, allowing for remote
operation (PPG Plots not available). Preparing the ash
memory can take up to 30s after enabling. If the ash
memory lls or battery power drops too low, ash logging
will automatically stop and the le will close. Only one
le can be saved at a time. The le must be downloaded
since it will be erased on the next log request.

If a log has completed, a binary le will be found on the
device. The binary log le must be downloaded via the

USB-C cable; it cannot be downloaded through BLE.
When the device is plugged into the PC, it enumerates as

a USB mass storage device. However, the le can only

be copied from this device. No other operations (such

as deleting or saving other les) will work on this device.
Copy the le to a local PC volume. Then run the parser to
generate a CSV le.

Please refer to the Evaluation Kit Parser User Guide

(max8614x demo + eval kit parser user guide 20170719.

pdf) for details operation.

Register Map Access

Under the <Register> Tab the user can access to sensor
register map as shown in Figure 17. Press <Read All>,

to read all the register value currently in congured in the

Optical AFE. Bolded font bits are logic one. Normal font

bits are logic zero. Click on the bits to toggle their value

and click on <W> to write the value to the device. The
register value does not change until <W> is clicked. Click
<R> to read the register value to verify the write.

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Evaluation System

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Figure 17. Register Map Access

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Detailed Description of Hardware

Status LED Indicators

The onboard tri-color LEDs are use as status indicator.

LED Green

Toggling (1Hz 50% duty cycle) = BLE advertising
Toggling (1Hz 10% duty cycle) = BLE connected

LED Red

USB-C cable connected to charger

On = charging
O󰀨 = charge complete

Flash Logging

On = busy preparing the ash memory or ash

memory is full

Toggling (synchronously with the green LED)

= logging
O󰀨 = not logging

Ordering Information

PART TYPE

MAX86140EVSYS# EVSYS

#Denotes RoHS compliant.

Note that ash logging indication takes precedence over

the charging indication. I.e., if the device is plugged into

a charger, the red LED indicates charge status. If ash

logging is enabled while plugged into the charger, the red

LED indicates ash log status.

Power Switch

Press the power switch (SW) to turn on/o󰀨 the device.

When powered on, the green LED will toggle per the LED

indicator section. When powered o󰀨, the green LED will

go out. The red LED may light temporarily, indicating that

the ash log is closing. Plugging in the USB-C cable will

also power up the device.

Battery/Charging

Use the USB-C cable to charge the integrated single-cell
LiPo battery. The integrated PMIC initiates and stops
charging automatically. Charge status is indicated through
the red LED and GUI.

Component List

MAX86140 EVSYS

PART QTY DESCRIPTION

MAXSensorBLE_EVKIT 1

MAX86140OSB_EVKIT 1

MAX86141OSB_EVKIT 1

150150225 1

MAX86140 EVSYS µC
PCB

MAX86140 EVSYS
Sensor PCB

MAX86141 EVSYS
Sensor PCB

Molex, Flex Cable, 25

Pins

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CY5677 1 Cypress, BLE Dongle

101181XX-000XXX 1

USB-C to USB-A Cable,
3 Ft.

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MAX86140/MAX86141

ITEM REF_DES DNI/DNP QTY MFG PAR T # MANUFACTURER VALUE DESCRIPTION COMMENTS

ANTENNA; 2450AT SE RIES; BOARDMOUNT;
MINI 2.45 GHZ ANTENN A; 2450MHZ

CONNECTOR; MALE; THROUGH HOLE ;

SHROUDED HEADER; STRAIGHT; 2PINS

CAPACITOR; SMT (0201); CERAMIC CHIP;

TG=-55 DEGC TO +125 DE GC; TC=X5R

CAPACITOR; SMT (0201); CERAMIC CHIP;

TO +85 DEGC; TC=X5R

CAPACITOR; SMT (0402); CERAMIC CHIP;

TG=-55 DEGC TO +85 DE GC; TC=X5R

C5-C7, C10,
C13, C14, C47

CAPACITOR; SMT (0402); CERAMIC CHIP;
22UF; 6.3V; TOL=20%; TC=X5R

CAPACITOR; SMT (0201); CERAMIC CHIP;

TO +125 DEGC; TC=C0G

CAPACITOR; SMT (0201); CERAMIC CHIP;

TO +125 DEGC; TC=C0G

CAPACITOR; SMT (0201); CERAMIC CHIP;

TO +125 DEGC; TC=C0G

CONNECTOR; FEMALE; SMT; USB TYPE-C

RIGHT ANGLE; 24PINS

CONNECTOR; FEMALE; SMT; EASY-ON

ANGLE; 25PINS

INDUCTOR; SMT (0603); CERAMIC CHIP;

2.2UH; TOL=+/-20%; 1. 1A;

INDUCTOR; SMT (2016) ; METAL ALLOY CHIP;

4.7UH; TOL=+/-20%; 1. 3A

INDUCTOR; SMT (0201) ; FILM TYPE; 3.3NH;
TOL=+/-0.1nH; 0.5A

DIODE; LED; SML; FULL COLOR;

SMT; VF=2.95V; IF=0.1A

R2, R3, R11, R15,
R24, R27-R31, R34

RESISTOR; 0402; 0 OHM; 0%; JUMPER;

0.10W; THICK FILM

RESISTOR; 0201; 10K OHM; 1%; 200PPM;

0.05W; THICK FILM

R6, R7, R16, R17,
R23, R25, R26

RESISTOR; 0201; 4.7K OHM; 1%; 100PPM;

0.05W; THICK FILM 3-LAY ER ELECTRODE

RESISTOR; 0201; 39K OHM; 1%; 100PPM;

0.05W; THICK FILM 3-LAY ER ELECTRODE

Evaluation System

MAX86140/MAX86141 EV Kit Bill of Materials

MAXSENSORBLEEK#

Evaluates: MAX86140 and MAX86141

1 A1 - 1 2450AT18A100 JOHANSON TE CHNOLOGY 2450AT18A100

2 BAT - 1 B2B-PH-K-S(LF)(SN) JST MANUFACTURING B2B-PH -K-S(LF)(SN)

C1, C22, C26,

3

C30-C37

C2, C15, C25,

4

C38-C43

C3, C4, C8, C9,

5

C12, C16, C27

6

7 C19 - 1 GJM0335C1E1R0WB01 MURATA 1PF

C20, C21, C28,

8

C29, C45, C46, Z44

9 C23, C24 - 2 GRM0335C1H101JA01 MURATA 100PF

10 CN 1 - 1 DX07S024JJ3 JAE ELECTRONIC INDUSTRY DX07S024JJ3

11 D S1, DS2 - 2 SML-P11UTT86 ROHM SML-P11UTT86 DIODE; L ED; SMT; PIV=1.8V; IF=0.02A

12 J3 - 1 5035662500 MOLE X 5035662500

13 L1, L2 - 2 DFM18PAN2R 2MG0L MURATA 2.2UH

14 L3 - 1 DFE201610E-4R 7M=P2 MURATA 4.7UH

15 L4 - 1 LQP03HQ3N 3B02 MURATA 3.3NH

GRM033R61A104KE15;

- 11
LMK063BJ104KP

- 9 GRM033R61A105ME15 MURATA 1UF

- 7 C1005X5R1A475M050BC TDK 4. 7UF

- 7 GRM155R60J226ME11 MURATA 22UF

- 7 GRM0335C1H120GA01 MUR ATA 12PF

MURATA;TAIYO YUDEN 0.1UF

PH CONNECTOR; 2M M PITCH;

0.1UF; 10V; TOL=10%; MODEL=;

1UF; 10V; TOL=20%; TG=-55 DEGC

4.7UF; 10V; TOL=20%; MODEL=C SERIES;

1PF; 25V; TOL=0.05PF; TG=-55 DEGC

12PF; 50V; TOL=2%; TG=-55 DEGC

100PF; 50V; TOL=5%; TG=-55 DEGC

CONNECTOR; DX07 SERIES RECEPTACLE;

TYPE HOUSIN G ASSEMBLY; RIGHT

16 LE D - 1 SML-LX0404SIUPGUSB LUMEX OPTOCOMPONENTS INC SML-LX0404SIUPGUSB

17

18 R5, R9 - 2 ERJ-1GE F1002C PANASONIC 10K

19

20 R8 - 1 ERJ-1GEF3902C PANASONIC 39K

- 11 ERJ-2GE0R00X PANASONIC 0

- 7 ERJ-1GE F4701C PANASONIC 4.7K

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MAX86140/MAX86141

ITEM REF_DES DNI/DNP QTY MFG PART # MANUFACTURER V ALUE DESCRIPTION COMMENTS

THERMISTOR; SMT (0402); THICK FILM
(NICKEL PLATED); 10K; TOL=+/-1%

RESISTOR; 0201; 261K OHM; 1%; 200PPM;

0.05W; THICK FILM

RESISTOR; 0201; 100K OHM; 1%; 100PPM;

0.05W; THICK FILM

RESISTOR; 0201; 200 OHM; 1% ; 200PPM;

0.05W; THICK FILM

RESISTOR; 0201; 33 OHM; 1% ; 100PPM;

0.05W; THICK FILM 3-LAY ER ELECTRODE

SWITCH; SPST; SMT; STRAIGHT; 15V;

0.02A; EVP-AW SER IES

EVKIT PART- IC; WEARABLE POWER
MANAGEMENT SOLUTION; PACKAGE
OUTLINE; WL P 56 PINS; 0.5MM PITCH;
PKG. CODE: W563A4+1;
PKG. OUTLINE: 21-100104;

IC; SOC; MULT IPROTOCOL BLUETOOT H LOW
ENERGY; ANT; 2.4GHZ RF SOC; W LCSP50

IC; ASW; 0.125A; FREQUENCY-SELECTSBLE;
SWITCHED-CAPA CITOR VOLTAGE
CONVERTER; WLP9 1.2X1.2

IC; PROT; E SD PROTECTION FOR
HIGH-SPEED INTERFACE; XSON6

IC; MMRY; MIRRORBIT FLASH; NON-VOLATILE
MEMORY; 1.8V SINGLE SUPPLY WITH
CMOS I/O; SERIAL PERIPHERAL INTERFACE
WITH MULTI-I/O; WSON8-EP

IC; COMP; ULTRA-SMALL; LOW-POW ER
SINGLE COMPARATOR; UCSP4

IC; UCON; HIGH-PERFORMANCE;
ULTRA-LOW POWER CORTEX-M4F
MICROCONTROLLER FOR RECHARGEABLE
DEVICES; WLP81

IC; LOGC; LOW -POWER CONFIGURABLE
MULTIPLE FUNCTION GATE; XSON6

IC; VREG; 500MA LOW-DROPOUT LINEAR
REGULATOR IN UCSP; UCSP6

CRYSTAL; SMT 2.0 MM X 1.2 MM; 6PF;

32.768KHZ; +/-20PPM; -0.03P PM/DEGC2

CRYSTAL; SMT 1.6 MM X 1.2MM; 8PF;
32MHZ; +/-10PPM; +/-10PP M

CONNECTOR; MALE; PALETTE SERIES 3.0
USB-C TO USB-A; 3FT BLACK

R1, R4, R12, R20-R22,
R32, R33

RESISTOR; 0402; 0 OHM; 0%; JUMPER;

0.10W; THICK FILM

CAPACITOR; SMT (0201); CERAMIC CHIP;
1PF; 25V; TOL=0.05PF; TG=-55 DEGC
TO +125 DEGC; TC=C0G

CAPACITOR; SMT (0201); MICR OWAVE;

1.8PF; 25V; TOL=0.05PF; TG=-55 DEGC
TO +125 DEGC; TC=C0G

TEST POINT; P AD DIA=0.762MM;
BOARD HOLE=0.381MM

Evaluates: MAX86140 and MAX86141

Evaluation System

MAX86140/MAX86141 EV Kit Bill of Materials (continued)

MAXSENSORBLEEK#

21 R 10 - 1 NCP15XH103F03RC MUR ATA 10K

22 R 13 - 1 ERJ-1GEF2613C PANASONIC 261K

23 R 14 - 1 CRCW0201100KFK VISHAY DALE 100K

24 R 18, R19 - 2 ERJ-1GE F2000C PANASONIC 200

25 R A1-RA4 - 4 ERJ-1GE F33R0C PANASONIC 33

26 SW - 1 EVP-AWCD2A PANASONIC EVP-AWCD2A

27 U1 - 1 MAX20303 MAXIM MAXIM SENSOR PLA TFORM 2

28 U2 - 1 NRF52832-CIAA NORDI C SEMICONDUCTOR NRF52832-CIAA

29 U3-U6, U9 - 5 MAX14689EWL+ MAX IM MAX14689EWL+

30 U7 - 1 IP4221CZ6-S NXP IP4221CZ6-S

31 U8 - 1 S25FS256SAGNFI001 SPANSION S25FS256SAGNFI001

32 U 10, U11 - 2 MAX9062EBS+G45 MAXIM MAX9062EBS+G45

33 U 12 - 1 MAX32620IWG+ MAXIM MAX32620IW G+

34 U 13 - 1 74AUP1G97GF NXP 74AUP1G97GF

35 U 29 - 1 MAX1819EBL50+ MAXIM MAX1819EBL 50+

36 X 2, Y2 - 2 ECS-.327-6-12 ECS INC 32.768KHZ

37 Y1 - 1 US3200005Z PERICOM SEMICOND UCTOR 32MHZ

38 P CB - 1 MA XSENSORBLE MAX IM PCB PCB:MAXSENSORBLE -

39 MI SC1 DNI 1 101181XX-000XXX N/A 101181XX-000X XX

40

DNP 0 ERJ-2GE0R00X PANASONIC 0

41 Z 17 DNP 0 GJM0335C1E1R0WB01 MURATA 1PF

42 Z 18 DNP 0 250R05L1R8AV4 JOHANSON T ECHNOLOGY 1.8PF

43 Jan-36 DNP 0 N/A N/A N/A

TOTAL 105

www.maximintegrated.com

Maxim Integrated

│

21

MAX86140/MAX86141

ITEM REF_DES DNI/DNP QTY MFG PART # MANUFACTURE R VALUE DESCRIPTION COMMENTS

C1-C3, C5,
C6, C9

CAPACITOR; SMT (0402); CERAMIC CHIP;
22UF; 6.3V; TOL=20%; TC=X5R

CAPACITOR; SMT (0201); CERAMIC CHIP;

+85 DEGC; TC=X5R

GRM155R61A106ME44;

0402ZD106MAT2A

CAPACITOR; SMT (0402); CERAMIC CHIP;

+85 DEGC; TC=X5R

4 D1 - 1 VEMD5080X01 V ISHAY SEMICONDUCTORS VEMD5080X01 DIODE; PIN; SMT; VRM=20V; IR=0.000045A

5 DS1, DS2 - 2 CT DBLP31.12-5C8C-56-J6Q6 OSRAM CT DBLP31.12-5C8C-56-J6Q6 DIODE; LED; GREEN; SMT; VF=2.3V; IF=0.02A ;

CONNECTOR; FEMALE; SMT; EASY-ON TYPE
FPC CONNECTOR; RIGHT ANGLE; 25PINS

R1-R3, R4A-R8A,
R9-R12

RESISTOR; 0201; 0 OHM; 0%; JUMPER;

0.05W; THICK FILM

EVKIT PART-IC; OPTICA L AFE OPTIMIZE
FOR HR ON WRIST APPLICATION; WLP20

IC; SNSR; 14 BIT DIGITAL TRIAXIAL

CONTROLLER; LGA12

10 PCB - 1 MAX86140OSB MAXIM PCB PCB:MAX86140OSB -

RESISTOR; 0201; 0 OHM; 0%; JUMPER;

0.05W; THICK FILM

TOTAL 28

ITEM REF_DES DNI/DNP QTY MF G PART # MAN UFACTURER V ALUE DESCRIPTION COMMENTS

1 C1-C5, C10 - 6 GRM155R60J226ME11 MURATA 22UF

CAPACITOR; SMT (0402); CERAMIC CHIP;
22UF; 6.3V; TOL=20%; TC=X5R

2 C7 - 1

GRM155R61A106ME44;

GRM155R61A106ME11;

0402ZD106MAT2A

MURATA;MURATA;AVX 10UF

CAPACITOR; SMT (0402); CERAMIC CHIP;

10UF; 10V; TOL=20%; TG=-55 DEGC TO

+85 DEGC; TC=X5R

3 C8, C9 - 2 GRM033R61A105ME15 MURA TA 1UF

CAPACITOR; SMT (0201); CERAMIC CHIP;

1UF; 10V; TOL=20%; TG=-55 DEGC TO

+85 DEGC; TC=X5R

4 DS1 - 1 CT DBLP31.12-5C8C-56-J6Q6 OS RAM CT DBLP31.12-5C8C-56-J6Q6 DIODE; LE D; GREEN; SMT; VF=2.3V; IF=0.02A ;

5 J1 - 1 5016162575 MOLEX 5016162575

CONNECTOR; FEMALE; SMT; EASY-ON TYPE
FPC CONNECTOR; RIGHT ANGLE; 25PINS

6 PD1, PD2 - 2 VEMD5080X01 VISHAY SE MICONDUCTORS VEMD5080X01 DIODE; PIN; SMT; VRM=20V; IR=0.000045A

7

R1-R3, R4A-R8A,
R9-R12

- 12 CRCW02010000ZS;ERJ-1GN0R00C VISHAY DALE;PANASONIC 0

RESISTOR; 0201; 0 OHM; 0%; JUMPER; 0.05W;
THICK FILM

8 U1 - 1 MAX86141 MAXIM MAX86141

EVKIT PART-IC; OPTICAL ANALOG FRONT-END

(AFE) OPTIMIZE FOR HR ON WRIST

APPLICATION; WLP20

9 U2 - 1 BMA280 BOSCH BMA280

IC; SNSR; 14 BIT DIGITAL TRIAXIAL

ACCELERATION SENSOR WITH INTELLIGENT
ON-CHIP MOTION-TRIGGRED INTERRUPT CONTROLLER;

LGA12

10 PCB - 1 MAX86141OSB MAXIM PCB PCB:MAX86141OSB -

11 R4B-R8 B DNP 0 CRCW02010000ZS;ERJ-1GN0R00C VISHAY DALE;PANASONIC 0

RESISTOR; 0201; 0 OHM; 0%; JUMPER;

0.05W; THICK FILM

TOTAL 28

Evaluates: MAX86140 and MAX86141

Evaluation System

MAX86140/MAX86141 EV Kit Bill of Materials (continued)

MAX86140OSBEK#

1

2 C4, C8 - 2 GRM033R61A105ME15 MURATA 1UF

3 C7 - 1

6 J1 - 1 5016162575 MOLEX 5016162575

7

8 U1 - 1 MAX86140 MAXIM MAX86140

9 U2 - 1 BMA280 BOSCH BMA280

11 R4B- R8B DNP 0 CRCW02010000ZS;ERJ-1GN0R00C VISHAY DALE;PANASONIC 0

- 6 GRM155R60J226ME11 MURATA 22UF

GRM155R61A106ME11;

- 12 CRCW02010000ZS;ERJ-1GN0R00C VISHAY DALE;PANASONIC 0

MURATA;MURATA;AVX 10UF

MAX86141OSBEK#

1UF; 10V; TOL=20%; TG=-55 DEGC TO

10UF; 10V; TOL=20%; TG=-55 DEGC TO

ACCELERATION SENSOR WITH INTELLIGENT
ON-CHIP MOTION-TRIGGRED INTERRUPT

www.maximintegrated.com

Maxim Integrated

│

22

MAX86140/MAX86141

1V8_B

Evaluation System

MAX86140/MAX86141 EV Kit Schematics

MAXSensorBLE

J3

5035662500

1235789

ACC_INT_N

ONLY ONE IS ENABLED

L1OUT ACTS AS SWITCH

1V8_B

C10

22UF

C12

L2

2.2UH

1 2

4.7UF

1V8_S

1V8_B

A7

B7

G6

G5

L1IN

BK2LX

L1OUT

BK2OUT

U1

R9

MAX20303

10K

SW

EVP-AWCD2A

RST_N

PMIC_PFN2

RST

PFN2

10K

R10

1 2

12

PMIC_PFN1

4.7UF

D2E2F6

D4

VDIG

PFN1

BAT

1

2

B2B-PH-K-S(LF)(SN)

C6

22UF

C7

C5

22UF

22UF

BATT_PWR

SYS_OUT

E4

F5

F4

H3

BAT

TPU

SYS

CAP

THM

L2OUT ACTS AS LDO

1V2

C47

C8

C9

L1

22UF

2.2UH

4.7UF

4.7UF

1 2

1V8_S

H7

G7

B6

A5

H4

SYS

L2IN

BK1LX

L2OUT

BK1OUT

Evaluates: MAX86140 and MAX86141

0

DNI

R30R29

VLED

1V8_S

J3.18 SCL

6

4

SPI0_SCK

SPI0_CSOPT_N

SPI0_MISO

C13

22UF

CPP

CPOUT

10

1213141516

11

SPI0_CSACC_N

SPI0_MOSI

B4B5B3

CPN

171821

J3.17SDA

1V8_S

OPT_INT_N

H2

F1

H1

BSTLVLX

BSTHVLX

19

DNI

0

BSTOUT

20

VLED

L3

22

4.7UH

1 2

BBLVLX

24

23

VLED

R11

5V0_B

E7F7C7

BBHVLX

25242322212019181716151413121110987654321

25

BBOUT

27

26

C43

0

BBGND

BSTGND

BK2GND

BK1GND

HDGND

DGND

GSUB

AGND

27

26

21

1UF

R14

261K

R13

C14

22UF

D7

G1

A6

H6

A3

C2

D3

E5

C16

4.7UF

OUTIN

U29

MAX1819EBL50+

A1 C1

C15

1UF

A2

POK

SHDN

A3

100K

C3

GND

SET

C2

SHDNL_N

CELL

QSTRT

D6

R6

SET

CHGIN

F3

C6

H5

0.1UF

C1 C4

R8

USB_VBUS

1UF

C2

SCL

SDA

4.7K

4.7K

R7

ALRT

CTG

E6

D5

PMIC_ALRT_N

RST_N

10K

R5

www.maximintegrated.com

39K

MPC2

G4

4

Y

B

1V8_B

MPC4

MPC3

C3

G3

PMIC_MPC

GND

C

PMIC_MPC

MON

E3

PMIC_MON

2 5

MPC0

SCL

B1

SCL

SDA

B2

SDA

1V8_B

MPC1

INT

C4

C5

G2

PMIC_INT_N

74AUP1G97GF

U13

VCC

A

316

SFOUT

F2 A4

3V3

C3

4.7UF

LED0

LED1

LED2

DRP

DRN

E1

A1

A2

D1

C1

PMIC_LED2

PMIC_LED0

PMIC_LED1

4

G

B

R

+

SML-LX0404SIUPGUSB

LED

1

SYS_OUT

Maxim Integrated

│

23

3

2

MAX86140/MAX86141

(COMPONENTS SOLDER DIRECTLY TO TRACE)

NO STUBS ON PI FILTER

Evaluates: MAX86140 and MAX86141

Evaluation System

MAX86140/MAX86141 EV Kit Schematics (continued)

MAXSensorBLE

RX2-

1V8_B

0.1UF

C31

C2

3V3

U4

3V3

C27

C26

C25

100PF

C24

100PF

C23

A1A3C1

NC1

VCC

CB

COM1

A2

B1

MAX14689EWL+

DBG_EN

NIM_UART_RX

0.1UF

A1A3C1

C30

NC1

C2

VCC

CB

A2

U3

MAX14689EWL+

DBG_EN

4.7UF

0.1UF

1UF

C22

0.1UF

RX2+

NC2

NO1

TX1+

NO1

COM1

B1

NIM_SWDCLK

C28

12PF

C3

NO2

GND

COM2

B3

NIM_UART_TX

TX1-

C3

NC2

NO2

COM2

B3

NIM_SWDIO

F5
E3
C4
C5

D2

H7
A7

A6
C2
A2
B7

B6

Z17 Z18 C19

B2

MAX14698 HAS INTEGRATED ESD PROTECTION

B2

GND

J3.18

SPI1_CSF_N

R31

R32

J3.17

0

0

PMIC_MON

R34

R33

DNI

0

0

RA1

C29

UART/HANDSHAKE TO NIMITZ

12PF

1 2

32.768KHZ
NRF5_P0_04

NRF5_P0_03

X2

D6

E7

E6

C6

D7

C7

VSS

P0.00/XL1

P0.01/XL2

VSS

VSS

VSS

VSS_PA

VDD

VDD

DEC4

DEC3

DEC2

DEC1

DCC

1PF

L4

P0.05/AIN3

P0.04/AIN2

P0.03/AIN1

P0.02/AIN0

SWDIO

SWDCLK

ANT

F1

G1

2 1D

3.3NH

1

NRF5_SWDIO

NRF5_SWDCLK

(IF >5MM)

50OHM TL

1.8PF1PF

2

Z44

12PF

NC

1

INPUT

DNI DNI

2450AT18A100

0.1UF

C33

C2

VCC

3V3

U6

MAX14689EWL+

0.1UF

C32

C2

3V3

U5

MAX14689EWL+

DNI

SPI0_SCK

SPI0_CSACC_N

RA2

RA4

RA3

33

33

33

33

A_SPI0_CSOPT_N SPI0_CSOPT_N

A_SPI0_CSACC_N

A_SP0_SCK

A_SPI0_MOSI SPI0_MOSI

G7

F7

F6

G6

P0.08

P0.09

P0.06

P0.07

XC1

XC2

A1

B2

32MHZ

2

Y1

C20

12PF

A1

CB

A2

DBG_EN

VCC

RX1-

RX1+

A1A3C1

C3

NC1

NC2

NO2

NO1

COM1

B1

NRF5_UART_RX

TX2+

A1A3C1

NC1

NO1

CB

COM1

A2

B1

DBG_EN

NRF5_SWDCLK

SPI MASTER TO SENSORS OR TRI-STATE

SPI SLAVE TO NIMITZ

SPI2_SCK

SPI0_MISO

SPI2_MOSI

SPI2_CSBLE_N

F4

G5

P0.12

P0.13

P0.11

NFC2/P0.10

U2

NRF52832-CIAA

31

4

12PF

B2

GND

COM2

B3

NRF5_UART_TX

TX2-

C3

NC2

NO2

B2

GND

COM2

B3

NRF5_SWDIO

I2C MASTER, OR SLAVE TO NIMITZ, OR TRI-STATE

SCL

SDA

SPI2_MISO

OPT_INT_N

PMIC_MPC

PMIC_PFN2

H5G4H6

H4

P0.17

P0.19

P0.14/TRACEDATA3

P0.15/TRACEDATA2

P0.16/TRACEDATA1

P0.18/TRACEDATA0

C21

SPI1_WP/IO2

NRF5_UART_RX

NRF5_UART_TX

SPI1_FRST/IO3

R4R3R2

SHDNL_N

R15

ACC_INT_N

H1

G2F3H2G3H3

P0.21/NRESET

P0.20/TRACECLK

R1

000

0

DNI

DNI

0

DBG_LED0

DBG_LED1

D3

P0.26

P0.27

P0.29/AIN5

P0.28/AIN4

NRF5_P0_31

HANDSHAKE TO NIMITZ

B5A5A4A3B4

P0.31/AIN7

P0.30/AIN6

NC

C3

PMIC_INT_N

PMIC_ALRT_N

D3/E1/E2 ARE NOT USED IN ORDER TO KEEP GND INTACT NEAR THE BLE ANTENNA (NRF5_UART AND RESET ARE NOT CONNECTED)

B3

E1

F2

E2

P0.22

P0.23

P0.24

P0.25

www.maximintegrated.com

Maxim Integrated

│

24

MAX86140/MAX86141

USB_A9B9 IS NOT USED (JTAG RESETB)

Evaluates: MAX86140 and MAX86141

Evaluation System

MAX86140/MAX86141 EV Kit Schematics (continued)

MAXSensorBLE

4.7K

R23

SPI2_MOSI

R21

DNI

0

3V3

R22

DNI

0

DBG_EN

MAX9062EBS+G45

U10

OUT

B1

3V3

B2

VCC

GND

IN

3V3

A2 A1

MAX9062EBS+G45

U11

B1

VCC

A2 A1

OUT

B2

GND

IN

USB TYPE-C CC PINS

PRESENCE OF PULLUPS ON

COMPARATORS DETECT

1V8_B

0.1UF

C35

1V8_B

DEBUG LEDS

SPI1_MOSI/IO0

5

SI/IO0

U8

S25FS256SAGNFI001

8

VDD

CS#

1

SPI1_CSF_N

R20

R19

A C

DS2

A C

DS1

SML-P11UTT86

SML-P11UTT86

SPI1_MISO/IO1

SPI1_WP/IO2

SPI1_FRST/IO3

3

7

2

SO/IO1

WP#/IO2

IO3/RESET#

SCK

6

SPI1_SCK

DNI

0

SPI2_SCK SPI2_MISO

200

R18

200

USB_A5

EP

4

VSS

1V8_B

DBG_LED1

DBG_LED0

3V3

0.1UF

C36

VCC

U9

MAX14689EWL+

CB

A2

DBG_EN

A1

NC1

COM1

B1

USB_SBU12

C3

A3

C1

NC2

NO2

NO1

COM2

B3

GND

B2 C2

C34

USB_VBUS

USB_B5

0.1UF

5

IP4221CZ6-S

I/O

134

USB_B5

USB_DP

I/O

I/O

I/O

6

USB_DM

USB_A5

2

GND

VCC

U7

www.maximintegrated.com

CN1

DX07S024JJ3

USB_A9B9

RX1+

RX1-

USB_SBU12

B11

B12

B9B8B7B6B5B4B3B2B1A12

B12

B11

B10

A1

A3A2A19A4A5A6A7A8

TX1-

USB_A5

TX1+

USB_VBUS

R16

USB_DM

USB_DP

USB_DP

USB_DM

4.7K

R17

4.7K

USB_B5

USB_VBUS

A9

USB_A9B9

USB_SBU12

TX2+

TX2-

B2B3B4B5B6B7B8B9B10

SHIELD_3

SHIELD_4

SHIELD_2

SHIELD

A11

A10A9A8A7A6A5A4A3A2

A11

A12 B1

A10

RX2+

RX2-

SHIELD_1

Maxim Integrated

│

25

MAX86140/MAX86141

SPI MASTER TO SENSORS

P1_7 CAN OUTPUT FCLK

4.7K

NIM_SWDCLK

Evaluates: MAX86140 and MAX86141

Evaluation System

MAX86140/MAX86141 EV Kit Schematics (continued)

MAXSensorBLE

27

15247

23

17325119

5

13

19

SPI0_MISO

SPI0_CSACC_N

SPI0_CSOPT_N

SPI0_MOSI

SPI0_SCK

2268

20

PMIC_MON

PMIC_PFN2

PMIC_MPC

SHDNL_N

NRF5_P0_04

R24

R28

R27

SPI MASTER TO NRF5

0

0

0

J2

P2_0

SPI2_SCK

SPI2_MOSI

SPI2_MISO

NIM_P2.1

NIM_P2.2 NRF5_P0_31

H3J3G4

H2

H4G5H5F5E6H6J6G6J7F7J8H9H8G7G9G8F9D7E7C7D6C6C5D5C4

P2_6

P2_5VREF

P2_4

P2_3

P2_2

P2_1

UART/HANDSHAKE TO NRF5

14

PMIC_ALRT_N

SPI2_CSBLE_N

P3_1

P3_0

P2_7

OPT_INT_N

ACC_INT_N

10

PMIC_INT_N

SDA

DBG_LED0

DBG_LED1

P3_3

P3_2

SCL

161812

VLED

I2C MASTER

SCL

F6

P3_5

P3_4

SDA

5V0_B

P3_6

DBG_LED0

1V8_S

P3_7

DBG_LED1

H7

P4_0

P4_1

J3.17

A_SPI0_CSACC_N

P4_2

P4_4

P4_3

J3.18

34

SPI1_SCK

P4_5

30

SPI1_MISO/IO1

SPI1_MOSI/IO0

OPT_INT_N

P4_6

P4_7

23528

SPI1_CSF_N

ACC_INT_N

P5_0

P5_1

33

SPI1_WP/IO2

SPI1_FRST/IO3

PMIC_PFN2

PMIC_INT_N

PMIC_ALRT_N

P5_2

P5_3

P5_4

SHDNL_N

PMIC_MPC

P5_5

P5_6

P5_7

32294

31

SPI2_MOSI

SPI2_SCK

1V8_B

C3

P6_0

SPI2_MISO

C39

1V8_B

B3

VDDA

SPI2_CSBLE_N

1UF

C38

1UF

A8E9H1

J4

VDD18

VDD18

VDD18

1V2

VDD18

1

F1

VDD12

26

C42

3V3

D8A3C8

VDDB

1UF

1V8_B

36

C41

1UF

C40

1UF

VRTC

U12

MAX32620IWG+

AIN3

AIN2

AIN1

AIN0

A4A5A6

PMIC_MON NIM_P2.0 NRF5_P0_03

www.maximintegrated.com

P0_0

P0_1

A7

C2C1D4D3D1

NIM_UART_RX

NIM_UART_TX

C37

0.1UF

P0_2

P0_3

P0_6

P0_4

P0_5

E3E2E1

D2

SPI0_MISO

A_SPI0_MOSI

A_SP0_SCK

P1_0

P1_1

P0_7

F3

E4

SPI1_MOSI/IO0

SPI1_SCK

A_SPI0_CSOPT_N

SPI1_MISO/IO1

P1_7

P1_6

P1_4

P1_2

P1_5

P1_3

F2

F4

E5

G2

G3

SPI1_FRST/IO3

SPI1_WP/IO2

J3.18

J3.17

SPI1_CSF_N

SPI MASTER TO FLASH

1V8_B

DP

DM

F8

E8

USB_DM

USB_DP

R25

TMS

TCK

SRSTN

RSTN

B2B1B4B7B6

B5

SRST_N

RST_N

NIM_SWDIO

TDO

VSS

VSS

VSS

32KIN

B9

Y2

VSS

B8

G1

1 2

32.768KHZ

C46

12PF

VSSA

J5

A2

D9

32KOUT

TDI

C9

C45

12PF

R26

4.7K

NC_A1

A1

NC_J9

NC_J1

NC_A9

J1

J9

A9

Maxim Integrated

│

26

MAX86140/MAX86141

*NOTE: PARTS WITH

J1

SCK_SCL

SPI0_CSACC_N

MOSI_SDA

Evaluates: MAX86140 and MAX86141

Evaluation System

MAX86140/MAX86141 EV Kit Schematics (continued)

MAX86140_OSB_EVKIT

MOSI_SDA

SCK_SCL

SPI0_MISO

1V8_O

1UF

10UF

C7 C8

10V

C2

D2

B5

10V

2

D1

VEMD5080X01

SDI

VDD_DIG

VDD_ANA

VREF

3

1

0

R9

A3A4A2

SDO

(SDA)

SPI0_CSOPT_N

0

R8A

A5

CSB

(NC)

(SCL)

SCLK

PD1_IN

PD_GND

C5D5D4B1C1

PD1_IN

4

PD_GND

0

R8B

(ADDR)

U1

NC

B2B4B3

INTB

MAX86140

(MAX86142)

GPIO1

OPT_INT_N

0

R11

GPIO2

GPIO1

LED1_DRV

LED2_DRV

LED3_DRV

VLED

A1

D1

2

K

DS1

A

1

22UF022UF

C6

C3

C4

GND_ANA GND_DIG

D3

PGND

2

3

K

K

DS2

ESD

CT DBLP31.12-5C8C-56-J6Q6

C3

3

K

ESD

A

CT DBLP31.12-5C8C-56-J6Q6

1

22UF

C5

B

B

VLED+

VLED+

TO THE CONNECTOR GROUND

GROUND LINE SHOULD BE ROUTED SEPARATELY

VLED+

BBB

MAX86142

AR4

A

MAX86140

U1

DNI

A

A

0OHM

0OHM

R8

R6 AR7R5

R9

R10 DNI

A = 0OHM ON THE A SIDE; DNI ON THE B SIDE

B = 0OHM ON THE B SIDE; DNI ON THE A SIDE

SCK_SCL

VLED+

22UF

0

R5B

1V8_O

0

R2

22UF

C2

SCL

5016162575

25242322212019181716151413121110987654321

SDA

SPI0_MISO

SPI0_CSACC_N

OPT_INT_N

SPI0_MOSI

SPI0_SCK

SPI0_CSOPT_N

ACC_INT_N

0

0

R4A

R5A

R1

C1

1V8_A

0

0

R4B

22UF

MOSI_SDA

C9

0

R3

10V

1UF

C4

1V8_A

27

26

TP1

7

3

SPI0_MISO

0

0

R7B

R7A

VDD

U2

VDDIO

SCXPSCSB

SDX SDO

2 1

12

R10

MOSI_SDA

SCK_SCL

GPIO1

ACC_INT_N

0

R12

6

5

INT2

INT1

BMA280

11

10

0

R6B

1V8_A

NC

4

GND

9

GNDIO

8

MARK ARE DNI.

0

R6A

www.maximintegrated.com

Maxim Integrated

│

27

MAX86140/MAX86141

*NOTE: PARTS WITH

SCK_SCL

MOSI_SDA

Evaluates: MAX86140 and MAX86141

Evaluation System

MAX86140/MAX86141 EV Kit Schematics (continued)

MAX86141_OSB_EVKIT

GPIO1

OPT_INT_N

0

SPI0_CSOPT_N

MOSI_SDA

SCK_SCL

SPI0_MISO

0

0

0

R11

R8B

R8A

R9

B2B4B3

A3A4A2

A5

1V8_O

PD1

SDI

(NC)

(SCL)

CSB

SDO

(SDA)

SCLK

10V

1UF

C2

D2

B5D3

10UF

10V

C7 C8

3

2

VEMD5080X01

1

PD2

PD_GND

VDD_DIG

VDD_ANA

VREF

4

3

2

VEMD5080X01

1

PD1_IN

C5D4D5

PD1_IN

4

(ADDR)

PD2_IN

PD_GND

PD2_IN

VLED+

INTB

U1

MAX86141

GPIO1

(MAX86143)

VLED

A1

DS1

GPIO2

LED1_DRV

LED2_DRV

C1

D1

2

K

A

1

VLED+

B1

3

C3

C4

GND_ANA GND_DIG

PGND

LED3_DRV

K

ESD

CT DBLP31.12-5C8C-56-J6Q6

22UF

C5

22UF

C4

B

MAX86143

A

MAX86141

R5 A

U1

R4

B

BBB

A

A

R7

R6

DNI0OHM

DNI

A

0OHM

R8

R9

R10

A = 0OHM ON THE A SIDE; DNI ON THE B SIDE

B = 0OHM ON THE B SIDE; DNI ON THE A SIDE

www.maximintegrated.com

J1

5016162575

ACC_INT_N

SCK_SCL

0

R5B

SPI0_MISO

SPI0_CSOPT_N

SPI0_CSACC_N

OPT_INT_N

SPI0_SCK

SPI0_MOSI

0

0

R5A

R4A

1V8_O

R2

SDA

R1

C1

1V8_A

SCL

22UF

0

0

22UF

C2

25242322212019181716151413121110987654321

0

R4B

MOSI_SDA

GROUND LINE SHOULD BE ROUTED SEPARATELY

TO THE CONNECTOR GROUND

22UF

22UF

C3 C10

VLED+

0

R3

27

26

TP1

1V8_A

SPI0_MISO

0

0

R7A

C9

1UF

10V

7

3

R7B

VDD

VDDIO

2 1

MOSI_SDA

U2

SCXPSCSB

SDX SDO

12

0

R10

SCK_SCL

GPIO1

ACC_INT_N

0

R12

6

5

INT2

INT1

BMA280

11

10

0

R6B

NC

4

GND

9

GNDIO

8

0

R6A

MARK ARE DNI.

SPI0_CSACC_N

1V8_A

Maxim Integrated

│

28

MAX86140/MAX86141

Evaluates: MAX86140 and MAX86141

Evaluation System

MAX86140/MAX86141 EV Kit PCB Layout Diagrams

MAXSensorBLE_EVKIT

MAXSensorBLE_EVKIT—Silk_Top

MAXSensorBLE_EVKIT—L02_GND MAXSensorBLE_EVKIT—L03_SIGS

MAXSensorBLE_EVKIT—Top

MAXSensorBLE_EVKIT—L04_SIGS MAXSensorBLE_EVKIT—L05_SIGS

www.maximintegrated.com

Maxim Integrated

│

29

MAX86140/MAX86141

Evaluates: MAX86140 and 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

www.maximintegrated.com

Maxim Integrated

│

30

MAX86140/MAX86141

Evaluates: MAX86140 and 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

www.maximintegrated.com

Maxim Integrated

│

31

MAX86140/MAX86141

Evaluates: MAX86140 and MAX86141

Evaluation System

MAX86140/MAX86141 EV Kit PCB Layout Diagrams (continued)

MAX86140_OSB_EVKIT

MAX86140OSBEK#—SILK_TOP MAX86140OSBEK#—Top

MAX86140OSBEK#—L02_GND

www.maximintegrated.com

Maxim Integrated

│

32

MAX86140/MAX86141

Evaluates: MAX86140 and MAX86141

Evaluation System

MAX86140/MAX86141 EV Kit PCB Layout Diagrams (continued)

MAX86140_OSB_EVKIT

MAX86140OSBEK#—BOTTOMMAX86140OSBEK#— L03_SIG

www.maximintegrated.com

Maxim Integrated

│

33

MAX86140/MAX86141

Evaluates: MAX86140 and MAX86141

Evaluation System

MAX86140/MAX86141 EV Kit PCB Layout Diagrams (continued)

MAX86141_OSB_EVKIT

MAX86141OSBEK#—Silk_Top MAX86141OSBEK#—Top

MAX86141OSBEK#—L02_GND

www.maximintegrated.com

Maxim Integrated

│

34

MAX86140/MAX86141

Evaluates: MAX86140 and MAX86141

Evaluation System

MAX86140/MAX86141 EV Kit PCB Layout Diagrams (continued)

MAX86141_OSB_EVKIT

MAX86141OSBEK#—L04 SIGMAX86141OSBEK#—L03_SIG

www.maximintegrated.com

Maxim Integrated

│

35

MAX86140/MAX86141
Evaluation System

Revision History

Evaluates: MAX86140 and MAX86141

REVISION

NUMBER

0 8/17 Initial release —

1 10/18

REVISION

DATE

DESCRIPTION

Updated the General Description, Quick Start, and Detailed Description of
Software sections; replaced Figures 9–12, Component List, Bill of Materials,
Schematics, and PCB Layout

PAGES

CHANGED

1, 9–11, 15,

19, 20–35

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 specications without notice at any time.

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

©

2018 Maxim Integrated Products, Inc.

│

36

Mouser Electronics

Authorized Distributor

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MAX86140EVSYS#