Cirrus-logic CS5368 Manuel d'utilisateur télécharger pdf (Page 39)

DS624F5 39

CS5368

7. PARAMETER DEFINITIONS

Dynamic Range

The ratio of the rms value of the signal to the rms sum of all other spectral components over the specified

bandwidth. Dynamic Range is a signal-to-noise ratio measurement over the specified bandwidth made with

a -60 dBFS signal. 60 dB is added to resulting measurement to refer the measurement to full scale. This

technique ensures that the distortion components are below the noise level and do not affect the measure-

ment. This measurement technique has been accepted by the Audio Engineering Society, AES17-199, and

the Electronic Industries Association of Japan, EIAJ CP-307. Expressed in decibels. The dynamic range is

specified with and without an A-weighting filter.

Total Harmonic Distortion + Noise

The ratio of the rms value of the signal to the rms sum of all other spectral components over the specified

bandwidth (typically 10 Hz to 20 kHz), including distortion components. Expressed in decibels. Measured

at -1 and -20 dBFS as suggested in AES17-1991 Annex A. Specified using an A-weighting filter.

Frequency Response

A measure of the amplitude response variation from 10 Hz to 20 kHz relative to the amplitude response at

1 kHz. Units in decibels.

Interchannel Isolation

A measure of crosstalk between one channel and all remaining channels, measured for each channel at the

converter's output with no signal to the input under test and a full-scale signal applied to all other channels.

Units in decibels.

Interchannel Gain Mismatch

The gain difference between left and right channels. Units in decibels.

Gain Error

The deviation from the nominal full-scale analog output for a full-scale digital input.

Gain Drift

The change in gain value with temperature. Units in ppm/°C.

Offset Error

The deviation of the mid-scale transition (111...111 to 000...000) from the ideal. Units in mV.

Intrachannel Phase Deviation

The deviation from linear phase within a given channel.

Interchannel Phase Deviation

The difference in phase response between channels.

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Cirrus-logic CS5368 Manuel d'utilisateur Page 39