Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design AFE4490 SBAS602H – DECEMBER 2012 – REVISED OCTOBER 2014 AFE4490 Integrated Analog Front-End for Pulse Oximeters 1 Features •1 Fully-Integrated Analog Front-End for Pulse Oximeter Applications: – Flexible Pulse Sequencing and Timing Control • Transmit: – Integrated LED Driver (H-Bridge, Push, or Pull) – 110-dB Dynamic Range Across Full Range (Enables Low Noise at Low LED Current) – LED Current: – Programmable Ranges of 50 mA, 75 mA, 100 mA, 150 mA, and 200 mA, Each with 8-Bit Current Resolution – Low Power: – 100 µA + Average LED Current – LED On-Time Programmability from (50 µs + Sett...

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