CS42418 datasheet(60/73 Pages) CIRRUS

60 / 73 page

DS603F1

CS42418

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 band width 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 effect the

measurement. This measurement technique has been accepted by the Audio Engineering Society,

AES17-1991, and the Electronic Industries Association of Japan, EIAJ CP-307. Expressed in decibels.

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

band width (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.

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 the left and right 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 the other channel. 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.

CS42418 Datasheet(PDF) 60 Page - Cirrus Logic