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Heart-Rate Sensor. MAX86141 Datasheet

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Heart-Rate Sensor. MAX86141 Datasheet






MAX86141 Sensor. Datasheet pdf. Equivalent




MAX86141 Sensor. Datasheet pdf. Equivalent





Part

MAX86141

Description

Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor



Feature


MAX86140/ MAX86141 Best-in-Class Optica l Pulse Oximeter and Heart-Rate Sensor for Wearable Health General Descriptio n The MAX86140/MAX86141 are ultra-low-p ower, completely integrated, optical da ta acquisition systems. On the transmit ter side, the MAX86140/MAX86141 have th ree programmable high-current LED drive rs that can be configured to drive up t o six LEDs. With t.
Manufacture

Maxim Integrated

Datasheet
Download MAX86141 Datasheet


Maxim Integrated MAX86141

MAX86141; wo MAX86140/MAX86141 devices working in master-slave mode, the LED drivers can drive up to twelve LEDs. On the receive r side, MAX86140 consists of a single o ptical readout channels, while the MAX8 6141 has two optical readout channels t hat can operate simultaneously. The dev ices have low-noise signal conditioning analog frontend (AFE) including 19-bit ADC, an industry-.


Maxim Integrated MAX86141

lead ambient light cancellation (ALC) ci rcuit, and a picket fence detect and re place algorithm. Due to the low power c onsumption, compact size, easy/flexible -to-use and industry-lead ambient light rejection capability of MAX86140/MAX86 141, the devices are idea .


Maxim Integrated MAX86141

.

Part

MAX86141

Description

Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor



Feature


MAX86140/ MAX86141 Best-in-Class Optica l Pulse Oximeter and Heart-Rate Sensor for Wearable Health General Descriptio n The MAX86140/MAX86141 are ultra-low-p ower, completely integrated, optical da ta acquisition systems. On the transmit ter side, the MAX86140/MAX86141 have th ree programmable high-current LED drive rs that can be configured to drive up t o six LEDs. With t.
Manufacture

Maxim Integrated

Datasheet
Download MAX86141 Datasheet




 MAX86141
MAX86140/
MAX86141
Best-in-Class Optical Pulse Oximeter and
Heart-Rate Sensor for Wearable Health
General Description
The MAX86140/MAX86141 are ultra-low-power, com-
pletely integrated, optical data acquisition systems. On
the transmitter side, the MAX86140/MAX86141 have
three programmable high-current LED drivers that
can be configured to drive up to six LEDs. With two
MAX86140/MAX86141 devices working in master-slave
mode, the LED drivers can drive up to twelve LEDs.
On the receiver side, MAX86140 consists of a single
optical readout channels, while the MAX86141 has two opti-
cal readout channels that can operate simultaneously. The
devices have low-noise signal conditioning analog front-
end (AFE) including 19-bit ADC, an industry-lead ambient
light cancellation (ALC) circuit, and a picket fence detect
and replace algorithm. Due to the low power consumption,
compact size, easy/flexible-to-use and industry-lead ambient
light rejection capability of MAX86140/MAX86141, the
devices are ideal for a wide variety of optical-sensing
applications, such as pulse oximetry and heart rate detection.
The MAX86140/MAX86141 operate on a 1.8V main
supply voltage and a 3.1~5.5V LED driver supply voltage.
Both devices support a standard SPI compatible interface
and fully autonomous operation. Each device has a large
128-word built-in FIFO. The MAX86140/MAX86141 is
available in compact wafer-level package (WLP) (2.048 x
1.848mm) with 0.4mm ball pitch.
Applications
● Wearable Devices for Fitness, Wellness and Medical
Applications
● Optimized for Wrist, Finger, Ear, and Other Locations
● Optimized Performance to Detect
• Optical Heart Rate
• Oxygen Saturation (SpO2)
• Muscle Oxygen Saturation (SmO2 and StO2)
Benefits and Features
● Complete Single and Dual-Channel Optical Data
Acquisition System
● Built-in Algorithm Further Enhances Rejection of Fast
Ambient Transients
● Optimized Architecture for Transmissive and
Reflective Heart Rate or SpO2 Monitoring
● Low Dark Current Noise of < 50pA RMS (Sample to
Sample Variance)
● Lower Effective Dark Current Noise Achievable Through
Multiple Sample Modes and On-Chip Averaging
● High-Resolution, 19-Bit Charge Integrating ADC
● Three Low-Noise, 8-Bit LED Current DACs
● Excellent Dynamic Range > 90dB in White Card
Loop-Back Test (Sample-to-Sample Variance)
● Dynamic Range Extendable to > 104dB for SpO2
and > 110dB for HRM with Multiple Sample Modes
and On-Chip Averaging
● Excellent Ambient Range and Rejection Capability
> 100μA Ambient Photodetector Current
• > 70dB Ambient Rejection at 120Hz
● Ultra-Low-Power Operation for Body Wearable Devices
• Low-Power Operation, Optical Readout Channel
< 10μA (typ) at 25sps
Short Exposure Integration Period of 14.8μs,
29.4μs, 58.7μs, 117.3μs
Low Shutdown Current = 20μW (typ)
● Built-in Algorithm Further Enhances Rejection of Fast
Ambient Transients
● Miniature 2.048 x 1.848mm, 5 x 4 0.4mm Ball Pitch WLP
● -40°C to +85°C Operating Temperature Range
Ordering Information appears at end of data sheet.
19-100051; Rev 1; 8/17




 MAX86141
MAX86140/
MAX86141
Simplified Block Diagram
Best-in-Class Optical Pulse Oximeter and
Heart-Rate Sensor for Wearable Health
VREF
VDD_ANA
VDD_DIG
PD1_IN
PD_GND
PD2_IN
VLED
LED1_DRV
LED2_DRV
LED3_DRV
REFERENCE
AMBIENT CANCELLATION
DIE TEMP
12-BIT ADC
DIGITAL NOISE
CANCELLATION
19-BIT CURRENT ADC
19-BIT CURRENT ADC
(MAX86141 ONLY)
AMBIENT CANCELLATION
(MAX86141 ONLY)
DIGITAL NOISE
CANCELLATION
(MAX86141 ONLY)
128- WORD
FIFO
SPI
INTERFACE
INT
SCLK
SDI
SDO
CSB
GPIO1
GPIO2
LED DRIVERS
PGND
GND_ANA
CONTROLLER
MAX86140/MAX86141
GND_DIG
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 MAX86141
MAX86140/
MAX86141
Best-in-Class Optical Pulse Oximeter and
Heart-Rate Sensor for Wearable Health
Absolute Maximum Ratings
VDD_ANA to GND_ANA.......................................-0.3V to +2.2V
VDD_DIG to GND_ANA........................................-0.3V to +2.2V
VDD_ANA to VDD_ANA........................................-0.3V to +0.3V
PGND to GND_ANA..............................................-0.3V to +0.3V
SCLK, SDO, SDI, CSB, INT to GND_ANA...........-0.3V to +6.0V
GND_DIG to GND_ANA........................................-0.3V to +0.3V
VLED to PGND.....................................................-0.3V to +6.0V
LED_DRV1 to PGND................................. -0.3V to VLED + 0.3V
LED_DRV2 to PGND................................. -0.3V to VLED + 0.3V
LED_DRV3 to PGND................................. -0.3V to VLED + 0.3V
PD1_IN to GND_ANA...........................................-0.3V to +2.2V
PD2_IN to GND_ANA .......................................... -0.3V to +2.2V
PD_GND to GND_ANA.........................................-0.3V to +0.3V
All other pins to GND_ANA...................................-0.3V to +2.2V
Output Short-Circuit Duration.....................................Continuous
Continuous Input Current Into Any Pin
(except LED_DRVx Pins)..............................................±20mA
Continuous Power Dissipation (WLP
(derate 5.5mW/°C above +70°C))............................... 440mW
Operating Temperature Range............................ -40°C to +85°C
Storage Temperature Range............................. -40°C to +105°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Package Information
5 x 4 WLP
PACKAGE CODE
Outline Number
Land Pattern Number
Thermal Resistance, Four-Layer Board:
Junction to Ambient (θJA)
Junction to Case (θJC)
N201A2+1
21-100134
Refer to Application Note 1891
55.49°C/W
N/A
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board.
For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
www.maximintegrated.com
Maxim Integrated 3



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