CS4329

18

DS153F1

PARAMETER DEFINITIONS

Dynamic Range

The ratio of the full scale 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 measurement

over the specified bandwidth made with a -60 dBFS signal. 60 dB is then added to the 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.

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.

Idle Channel Noise / Signal-to-Noise-Ratio

The ratio of the rms analog output level with 1kHz full scale digital input to the rms analog

output level with all zeros into the digital input. Measured A-weighted over a 10 Hz to 20 kHz

bandwidth. Units in decibels. This specification has been standardized by the Audio

Engineering Society, AES17-1991, and referred to as Idle Channel Noise. This specification has

also been standardized by the Electronic Industries Association of Japan, EIAJ CP-307, and

referred to as Signal-to-Noise-Ratio.

Interchannel Isolation

A measure of crosstalk between the left and right channels. Measured for each channel at the

converter’s output with all zeros to the input under test and a full-scale signal applied to the

other channel. Units in decibels.

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.

De-Emphasis Error

A measure of the difference between the ideal de-emphasis filter and the actual de-emphasis

filter response. Measured from 10 Hz to 20 kHz relative to 1 kHz. 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.