Analog Devices / Maxim Integrated MAXM86161 Optical Bio Sensor
Analog Devices MAXM86161 Optical Bio-Sensor is a complete optical data-acquisition system in a single ultra-low-power module. The MAXM86161 Bio-Sensor is specifically targeted for in-ear medical applications and is optimized to detect Heart Rate (HR), Oxygen Saturation (SpO2), and Heart Rate Variability (HRV).
On the transmitter side, the MAXM86161 has three programmable high-current LED drivers. On the receiver side, MAXM86161 consists of a high-efficiency PIN photodiode and an optical readout channel. The optical readout has a low-noise signal conditioning Analog Front-end (AFE), including a 19-bit ADC (Analog to Digital Converter), a high-performance 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 ambient light rejection capability of the MAXM86161, the device is ideal for various optical sensing applications such as heart rate detection and pulse oximetry.
The MAXM86161 operates on a 3.0V to 5.5V VLED single supply voltage. It supports a standard compatible interface and fully autonomous operation. Each device has a large 128-word built-in FIFO.
The Analog Devices MAXM86161 Optical Bio-Sensor is offered in a miniature 14-pin Organic Land Grid Array (OLGA) package and is lead-free and RoHS-compliant.
Features
- Complete single-channel optical data acquisition system
- Built-In algorithm further enhances rejection of fast ambient transients
- Optimized architecture for reflective heart rate and 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 >89dB in white card loop-back test (sample-to-sample variance)
- Excellent ambient range and rejection capability
- >100μA ambient photodetector current
- >70dB ambient rejection at 120Hz
- Ultra-low-power operation for wearable devices
- <10μA, typical at 25sps low-power operation, optical readout channel
- 14.8μs, 29.4μs, 58.7μs, 117.3μs exposure integration period
- 1.6μA (typ) low shutdown current
- 860nm peak sensitivity
- 420nm to 1020nm spectral bandwidth range
- 3.0V to 5.5V LED supply voltage (VLED)
- 1.68V to 1.92V, 1.8V (typ) LDO output voltage (VLDO)
- -40°C to +85°C operating temperature range
- OLGA-14 package type
- 2.9mm x 4.3mm x 1.4mm package dimensions
- Lead(Pb)-free/RoHS-compliant package
Development Tool
Analog Devices / Maxim Integrated MAXM86161EVSYS Evaluation System
Comprehensive demonstration and prototyping platform for the MAXM86161 Optical Bio-Sensor.
Related Products
Analog Devices / Maxim Integrated MAX30102 Pulse Oximeter & Heart-Rate Sensor
Integrated pulse oximetry and heart-rate monitor, 1.8V power supply, I2C-compatible interface
Analog Devices / Maxim Integrated MAX32664 Ultralow Power Biometric Sensor Hub
Nagtatampok ng naka-embed na firmware at mga algorithm para sa mga naisusuot.
Block Diagram
Pinout Diagram
