link to page 1 link to page 1 link to page 1 link to page 5 link to page 6 link to page 6 link to page 6 link to page 11 link to page 13 link to page 13 link to page 14 link to page 14 link to page 14 link to page 14 link to page 14 link to page 20 link to page 21 link to page 21 link to page 22 link to page 22 link to page 23 link to page 23 link to page 24 link to page 24 link to page 25 link to page 26 link to page 29 link to page 30 link to page 30 link to page 30 link to page 30 link to page 30 link to page 30 link to page 31 link to page 32 link to page 33 MAXM86161 Single-Supply Integrated Optical Module for HR and SpO2 Measurement TABLE OF CONTENTS General Description . 1 Applications . 1 Benefits and Features . 1 Simplified Block Diagram. 5 Absolute Maximum Ratings . 6 Package Information . 6 Electrical Characteristics . 6 Typical Operating Characteristics . .11 Pin Configuration . 13 Pin Description . 13 Detailed Description. 14 Optical Subsystem . 14 LED Driver. 14 FIFO Configuration . 14 LED Sequence Control (0x20 to 0x22) . 14 Pseudo-Code Example of Initialize the Optical AFE. 20 Pseudo-Code for Interrupt Handling with FIFO_A_FULL. 21 Pseudo-Code Example of Reading Data from FIFO. 21 Optical Timing . 22 One LED Pulsing with No Direct Ambient Sampling. 22 One LED Pulsing with Direct Ambient Sampling. 23 Two LEDs Pulsing Sequential y with Direct Ambient Sampling . 23 Al LEDs Pulsing Sequential y with Direct Ambient Sampling. 24 ADC Architecture and Transfer Function Non-Linearity (XNL) Trim . 24 Proximity Mode Function . 25 Picket Fence Detect-and-Replace Function . 26 Layout Guidelines . 29 I2C/SMBus Compatible Serial Interface . 30 Detailed I2C Timing Diagram. 30 Bit Transfer. 30 START and STOP Conditions . 30 Early STOP Conditions . 30 Slave Address . 30 Acknowledge Bit . 31 I2C Write Data Format . 32 I2C Read Data Format. 33 www.maximintegrated.com Maxim Integrated │
2 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
