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The ADUX1020 employs three methods of improving signal-to-noise ratio and resolution of operation: control over the number of LED pulses per sample and sample decimation (averaging). For each sample of data, a selectable number of 3 μsec pulses are added together. Each pulse requires a single ADC read, so the resolution is improved by using multiple pulses, as the signal will increase by a factor of N while the noise will only increase by a factor of √N. The built-in decimation/averaging function can increase the effective resolution in a similar way.

The ADUX1020 employs three methods of improving signal-to-noise ratio and resolution of operation: control over the number of LED pulses per sample and sample decimation (averaging). For each sample of data, a selectable number of 3 μsec pulses are added together. Each pulse requires a single ADC read, so the resolution is improved by using multiple pulses, as the signal will increase by a factor of N while the noise will only increase by a factor of √N. The built-in decimation/averaging function can increase the effective resolution in a similar way.