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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

1 2 3 4 5 6 7

Résumé du contenu

Page 1 - 1. Introduction

Page 2 - * Resistor may only be

AN23222. Typical Connection DiagramsFigure 1. CS5361 Typical Connection DiagramFigure 2. CS5381 Typical Connection DiagramFILT+AINL+AINL-VD0.01µFA/D

Page 3 - Calibration

AN2323Figure 3. AK5393 Typical Connection DiagramVREFLAINL+AINL-V0.1A/D CONVERTERAK5393AINR+AINR-VCOML10µF+RSTVA D+5V10µF+5V to 3.3V10µF++SDATACALRes

Page 4 - 4. Offset Calibration

AN23243. Pin CompatibilityTable 2 shows the pins of the AK5393 and the corresponding pins of the CS5361/81. Please note that theAK5393 has 28 pins, an

Page 5

AN2325A system calibration can then be performed by first running the CS5361 or CS5381 with the high passfilter enabled (HPF = LOW) until the filter s

Page 6 - CS5361/CS5381

AN2326Figure 4. Single-Ended to Differential Input Buffer8.2 Fully Differential Input BufferFigure 5 shows a fully differential analog input buffer.

Page 7

AN2327Contacting Cirrus Logic SupportFor all product questions and inquiries contact a Cirrus Logic Sales Representative. To find one nearest you go t

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Cirrus-logic AN232 Manuel d'utilisateur

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