CS5394

18

DS258PP4

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.