Datasheet MAXM86161 (Maxim) - 8

MAXM86161 Single-Supply Integrated Optical Module for HR and SpO2 Measurement
Electrical Characteristics (continued)
(VLED = 5.0V, PPG1_ADC_RGE = 16μA, PPG_SR = 512sps, PPG_TINT = 117.3μs, LED_SETLNG = 6μs, LEDx_RGE = 31mA, PDBIAS1 = 0x1, TA = 25°C, min/max are from TA = -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Maximum PPG Sample Rate PPG_SR = 0x13 4096 sps Sample Rate Error From nominal as indicated in the PPG_SR table -2 +2 % LEDx_PA = 0x00, PPG_TINT = 117.8μs, PPG_SR = 100sps, PPG1_ADC_RGE = 4μA 1 20 Counts Dark Current Count LED_DCC LEDx_PA = 0x00, PPG_TINT = 117.8μs, PPG_SR = 100sps, PPG1_ADC_RGE = 4μA 0.001 0.004 % of FS Maximum DC Ambient Light Rejection ALR TA = +25°C 200 μA Ambient Light Detect LEDx_PA = 0x00, PPG_TINT = 117.8µs, Noise ADD_OFFSET = 0x1, PPG_SR = 100sps, 5 25 Counts PPG1_ADC_RGE = 4µA, TA = +25°C. For IR Propriety ATE 3V < VLED+ < 5.5V 0.05 1 setup, LEDx_RGE = 124mA, LEDx_ For Red % of FS PA = 0xFF, T 4V < VLED+ < 5.5V 0.05 1 ADC Count - PSRR A = +25°C to +85°C For Green (VLED) (Note 2) PSRRVLED 4.8V < VLED+ < 5.5V 0.05 1 LEDx_RGE = 124mA, Frequency = DC to 100kHz, PPG_TINT = 100mV 40 LSB P-P 120μs
LED DRIVER
LED Current Resolution 8 Bits LEDx_RGE = 0x0 31 Full Scale LED Current LEDx_RGE = 0x1 62 (Note 3) ILED LEDx_PA = 0xFF mA LEDx_RGE = 0x2 93 LEDx_RGE = 0x3 124 LEDx_PA = 0xFF, LEDx_RGE = 0x0 160 253 LEDx_RGE = 0x1 317 Minimum Output Voltage V 95% of the OL desired LED mV LEDx_RGE = 0x2 495 current LEDx_RGE = 0x3 700 LED1 Driver Compliance Interrupt LED1COMP 180 mV
IR LED CHARACTERISTICS (NOTE 4)
Centroid Wavelength λcentroid IF = 100mA, tp = 10ms, TA = +25°C 880 nm Forward Voltage VF IF = 100mA, tp = 10ms, TA = +25°C 1.6 1.9 V Radiant Power Φe IF = 100mA, TA = +25°C 38 mW Maximum Junction Tem- perature TJ 115 °C www.maximintegrated.com Maxim Integrated │ 8 Document Outline General Description Applications Benefits and Features Simplified Block Diagram Absolute Maximum Ratings Package Information Electrical Characteristics Typical Operating Characteristics Pin Configuration Pin Description Detailed Description Optical Subsystem LED Driver FIFO Configuration LED Sequence Control (0x20 to 0x22) Pseudo-Code Example of Initialize the Optical AFE Pseudo-Code for Interrupt Handling with FIFO_A_FULL Pseudo-Code Example of Reading Data from FIFO Optical Timing One LED Pulsing with No Direct Ambient Sampling One LED Pulsing with Direct Ambient Sampling Two LEDs Pulsing Sequentially with Direct Ambient Sampling All LEDs Pulsing Sequentially with Direct Ambient Sampling ADC Architecture and Transfer Function Non-Linearity (XNL) Trim Proximity Mode Function Picket Fence Detect-and-Replace Function Layout Guidelines I2C/SMBus Compatible Serial Interface Detailed I2C Timing Diagram Bit Transfer START and STOP Conditions Early STOP Conditions Slave Address Acknowledge Bit I2C Write Data Format I2C Read Data Format Register Map Register Details INTERRUPT STATUS 1 (0x00) INTERRUPT STATUS 2 (0X01) INTERRUPT ENABLE 1 (0X02) INTERRUPT ENABLE 2 (0X03) FIFO WRITE POINTER (0X04) FIFO READ POINTER (0X05) OVER FLOW COUNTER (0X06) FIFO DATA COUNTER (0X07) FIFO DATA REGISTER (0X08) FIFO CONFIGURATION 1 (0X09) FIFO CONFIGURATION 2 (0X0A) SYSTEM CONTROL (0X0D) PPG SYNC CONTROL (0X10) PPG CONFIGURATION 1 (0X11) PPG CONFIGURATION 2 (0X12) PPG CONFIGURATION 3 (0X13) PROX INTERRUPT THRESHOLD (0X14) PHOTO DIODE BIAS (0X15) PICKET FENCE (0X16) LED SEQUENCE REGISTER 1 (0X20) LED SEQUENCE REGISTER 2 (0X21) LED SEQUENCE REGISTER 3 (0X22) LED1 PA (0x23) LED2 PA (0x24) LED3_PA (0x25) LED PILOT PA (0x29) LED RANGE 1 (0X2A) S1 HI RES DAC1 (0x2C) S2 HI RES DAC1 (0x2D) S3 HI RES DAC1 (0x2E) S4 HI RES DAC1 (0x2F) S5 HI RES DAC1 (0x30) S6 HI RES DAC1 (0x31) DIE TEMPERATURE CONFIGURATION (0X40) DIE TEMPERATURE INTEGER (0X41) DIE TEMPERATURE FRACTION (0X42) DAC CALIBRATION ENABLE (0X50) SHA COMMAND (0XF0) SHA CONFIGURATION (0XF1) MEMORY CONTROL (0XF2) MEMORY INDEX (0XF3) MEMORY DATA (0XF4) PART ID (0XFF) Ordering Information Revision History