脉搏血氧仪
Pulse oximetry measurements require the use of one wavelength each side of the 805nm isobestic point on the absorption spectra of adult haemoglobin. The DC and background noise is subtracted out, and the pulsed signals are then scaled. Two common methods to determine SPO2 are calculated and lookup tables. Extensive over-sampling, filtering and signal processing are needed to eliminate noise such as movement artifacts from small signals.
应用笔记
- AN-892 : Temperature Measurement Theory and Practical Techniques
(pdf, 733 kB)
- AN-740 : iCoupler® Isolation in RS-232 Applications
(pdf, 716 kB)
- AN-724 : ADuC702x Serial Download Protocol
(pdf, 141 kB)
- AN-645 : Interfacing an HD44780 Character LCD to a MicroConverter ® (uC014)
(pdf, 97 kB)
... There is a vast array of LCD displays available.Fortunately,a majority of them comply with the HD44780U standard.This standard refers to the LCD controller chip that accepts data from the MicroConverter and communicates with the LCD screen.- AN-645 Files (uC014) (zip, 346 kB)
(zip, 354,590 bytes)
- AN-645 Files (uC014) (zip, 346 kB)
- AN-313 : Getting the Most from High Resolution D/A Converters
(pdf, 707 kB)
- AN-241 : Evaluation Board for the AD7710 High Resolution (24-Bits) Sigma-Delta A/D Converter
(pdf, 481 kB)
Ask the Experts
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技术文章
- Circuit Suggestions Using Features and Functionality of New Sigma-Delta ADCs
- Reduce Noise and Power Levels with Precision Data Acquisition Solution