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DS138F5

CS5330A/31A

4. PARAMETER DEFINITIONS

Resolution

The total number of possible output codes is equal to 2 N, where N = the number of bits in the output word

for each channel.

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 (THD+N)

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.

Total Harmonic Distortion

The ratio of the rms sum of all harmonics up to 20 kHz to the rms value of the signal.

Interchannel Phase Deviation

The phase difference between the left and right channel sampling times.

Interchannel Isolation

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

output with the input under test AC grounded 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 of the measured full-scale amplitude from the ideal full-scale amplitude value.

Gain Drift

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

Bipolar Offset Error

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