MAX86140ENP+ Datasheet PDF - Maxim Integrated

●The MAX86140 is an ultra-low-power, completely integrated, optical data acquisition system. On the transmitter side, the MAX86140 has three programmable high-current LED drivers that can be configured to drive up to six LEDs. With two MAX86140 devices working in master-slave mode, the LED drivers can drive up to twelve LEDs. On the receiver side, MAX86140 has a low-noise signal conditioning analog front-end (AFE) including a 19 bit ADC, an industry-lead ambient light cancellation (ALC) circuit, and a picket fence detect and replace algorithm.

● Complete single 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 less than 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