Cirrus Logic AN232 - Manual

1
Copyright  Cirrus Logic, Inc. 2003
(All Rights Reserved)
http://www.cirrus.com
AN232
AK5393 to CS5361/81 Conversion
by Kevin L Tretter
1. Introduction
The CS5361 and CS5381 are complete analog-to-digital converters for digital audio systems. They per-
form sampling, analog-to-digital conversion and anti-alias filtering, generating 24-bit values for both left
and right channels.
The CS5361 and CS5381 offer some unique advantages over the AK5393 including:
- Over 70% REDUCTION in package size (TSSOP)
- 50% less power consumption
- 192kHz sampling capability
- Overflow detect
- Integrated level shifters
- Over 65% less group delay (48kHz output sample rate)
- External components consume less board space (See Section 2)
Table 1 shows a comparison of the key specifications of these three devices.
Table 1. Comparison of Key Specifications
AK5393 CS5361 CS5381
Conversion (Bits) 24 24 24
Dynamic Range (A-weighted) dB 117 114 120
THD+N dB -105 -105 -110
Analog Core Power Supply (VA) V +5.0 V +5.0 V +5.0 V
Digital Core Power Supply (VD) +3.3 V to +5.0 V +3.3 V to +5.0 V +3.3 V to +5.0 V
Digital Interface Power Supply (VL) N/A +2.5 V to +5.0 V +2.5 V to +5.0 V
Maximum Power mW 680 161 348
Maximum Sample Rate kHz 108 200 200
Package 28-pin SOP 24-pin SOIC/TSSOP 24-pin SOIC/TSSOP
JUL ‘03
AN232REV1