Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

Signal Amplitude

Required number input.

Noise Rms Amplitude

Required number input.

Detected LiDAR signal-to-noise ratio in decibels from matched-unit RMS signal and noise amplitudes. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Snr Decibels (dB)

The resulting snr decibels returned as a number.

• LiDAR range and SNR equations depend on target reflectivity and geometry, atmosphere, wavelength, optics, detector bandwidth, background light, pulse shape, scanning losses, probability of detection, and eye-safe transmit limits. Ideal inverse-square estimates do not guarantee detection range.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• Fingerprint Sensor SNR

  Express a fingerprint sensor's measured RMS image-signal amplitude divided by RMS noise as voltage SNR in decibels.

• Quantization SNR

  Calculate the theoretical signal-to-noise ratio limit of an ideal quantizer in decibels.

• SNR To dB

  Convert a linear signal-to-noise ratio to an equivalent ratio in decibels.