CS4365
6. 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 measure-
ment to full scale. This technique ensures that the distortion components are below the noise level and
do not affect the measurement. This measurement technique has been accepted by the Audio Engineer-
ing 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
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.
7. REFERENCES
Note: "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.
Note: CDB4365 Datasheet
Note: “Design Notes for a 2-Pole Filter with Differential Input” by Steven Green. Cirrus Logic Application Note AN48
2
Note: “The I C-Bus Specification: Version 2.0” Philips Semiconductors, December 1998.
http://www.semiconductors.philips.com
8. ORDERING INFORMATION
Product
CS4365
CDB4365
Description
Package Pb-Free
Grade
Temp Range
Container Order #
Tray
CS4365-CQZ
Commercial -10° to +70° C
Automotive -40° to +105° C
Tape & Reel CS4365-CQZR
114 dB, 192 kHz 6-
channel D/A Converter
48-pin
YES
LQFP
Tray
Tape & Reel CS4365-EQZR
CDB4365
CS4365-EQZ
CS4365 Evaluation Board
-
-
-
-
DS670PP1
45
CIRRUS [ CIRRUS LOGIC ]
