CS4362_08 Datasheet, PDF (40/42 Pages) Cirrus Logic – 114 dB, 192 kHz 6-Channel D/A Converter

CS4362
10.PARAMETER DEFINITIONS
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
bandwidth (typically 10 Hz to 20 kHz), including distortion components. Expressed in decibels.
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.
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 deci-
bels.
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.
11.REFERENCES
1. How to Achieve Optimum Performance from Delta-Sigma A/D & D/A Converters by Steven Harris. Paper
presented at the 93rd Convention of the Audio Engineering Society, October 1992.
2. CDB4362 Evaluation Board Data Sheet, available at http:www.cirrus.com.
3. Design Notes for a 2-Pole Filter with Differential Input by Steven Green. Cirrus Logic Application Note AN48,
available at http:www.cirrus.com.
4. The I²C-Bus Specification: Version 2.0, Philips Semiconductors, December 1998.
http://www.semiconductors.philips.com
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