CDB44800 Cirrus Logic Inc, CDB44800 Datasheet - Page 77
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CDB44800
Manufacturer Part Number
CDB44800
Description
BOARD EVAL FOR CS44800 PWM CTRL
Manufacturer
Cirrus Logic Inc
Series
Popguard®r
Specifications of CDB44800
Amplifier Type
Class D
Output Type
8-Channel
Voltage - Supply
20 V ~ 50 V
Operating Temperature
-10°C ~ 70°C
Board Type
Fully Populated
Utilized Ic / Part
CS44800
Description/function
Audio DSPs
Operating Supply Voltage
5 V
Product
Audio Modules
For Use With/related Products
CS44800
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Max Output Power X Channels @ Load
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
598-1532
CDB-44800
CDB-44800
DS632F1
Signal to Noise Ratio (SNR)
SRC
Total Harmonic Distortion + Noise (THD+N)
9. REFERENCES
1. Cirrus Logic, “Audio Quality Measurement Specification,” Version 1.0, 1997.
2. Cirrus Logic, “AN18: Layout and Design Rules for Data Converters and Other Mixed Signal Devices,”
3. Cirrus Logic, “AN22: Overview of Digital Audio Interface Data Structures, Version 2.0”, February 1998.; A
4. Philips Semiconductor, “The I²C-Bus Specification: Version 2,” Dec. 1998.
SNR, similar to DR, is the ratio of an arbitrary sinusoidal input signal to the RMS sum of the noise floor, in
the presence of a signal. It is measured over a 20 Hz to 20 kHz bandwidth with units in dB.
Sample Rate Converter. Converts data derived at one sample rate to a differing sample rate. The CS44800
operates at a fixed sample frequency. The internal sample rate converter is used to convert digital audio
streams playing back at other frequencies to the PWM output rate.
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.
http://www.cirrus.com/products/papers/meas/meas.html
Version 6.0, February 1998.
useful tutorial on digital audio specifications.
http://www.semiconductors.philips.com
CS44800
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