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AN249

CS5333 to CS5340 Conversion

by Kevin L Tretter

1. Introduction

The CS5333 and CS5340 are complete stereo analog-to-digital converters for digital audio systems.

These converters perform sampling, analog-to-digital conversion and anti-alias filtering, generating 24-bit

values for both left and right channels. These small, low power converters are ideal for systems requiring

wide dynamic range and low noise such as set-top boxes, A/V receivers, DVD-karaoke players, DVD re-

corders, and automotive applications. The CS5333 is no longer recommended for new designs, and the

CS5340 is the suggested replacement.

This application note identifies the implementation differences between these two devices, including:

- Key specifications

- Pinout differences

- Startup mode selections

- System clocking

- Input filter topology

- Reference pin decoupling

2. Key Specifications

Table 1 shows a comparison of the key specifications of these two devices, and Table 2 shows the pin

comparison between the CS5333 and the CS5340. Although these two devices are not pin compatible,

they are very similar in terms of overall functionality and feature set. The CS5340 achieves higher analog

performance and supports a wider range of output sample rates, including 192 kHz. This additional per-

formance is the main reason for the increased power consumption of the CS5340 relative to the CS5333.

Table 1. Comparison of Key Specifications

Parameter CS5333 CS5340 Units

Conversion 24 24 Bits

Dynamic Range (A-weighted)* 95 98 dB

THD+N* -88 -95 dB

Analog Core Power Supply (VA) +1.8 to +3.3 +3.3 to +5.0 V

Digital Core Power Supply (VD) Powered from VA +3.3 to +5.0 V

Digital Interface Power Supply (VL) +1.8 to +3.3 +1.8 to +5.0 V

Maximum Power* 31 100 mW

Maximum Sample Rate 100 200 kHz

Package 16-pin TSSOP 16-pin TSSOP

* All performance/power measurements taken with all supplies set to 3.3 V

MAR ‘04

AN249REV1

1 2 3 4 5 6 7 8 9 10

Résumé du contenu

Page 1 - CS5333 to CS5340 Conversion

Page 2

AN24910Revision Date Change1 16 March 2004 Initial ReleaseContacting Cirrus Logic SupportFor a complete listing of Direct Sales, Distributor, and Sale

Page 3 - • GND for Slave Mode

AN2492The CS5333 and CS5340 are both available in a 16-pin TSSOP package. As can be seen from Table 2,all but three pins correlate directly in terms o

Page 4 - • GND for LJ

AN24933. Typical Connection DiagramsFigures 1 and 2 illustrate the typical connection diagram for the CS5333 and CS5340 respectively. Theanalog and di

Page 5 - 6. System Clocking

AN2494The CS5340 has separate power supply pins for the analog and digital cores. The analog section is pow-ered from the VA supply and the digital se

Page 6 - 7. Input Filter Topology

AN24954. Master/Slave and Speed Mode Selection4.1 CS5333In the CS5333, the selection for Master or Slave mode operation is determined by a resistor pu

Page 7 - Input = -1 dBFS

AN24967. Input Filter TopologyBoth the CS5333 and CS5340 implement a single-ended input architecture. Due to differences in the inputsampling topologi

Page 8

AN2497Figure 5. CS5340 Passive Input Filter, Solution 1-105-80-100-95-90-85dBFS20 20k50 100 200 500 1k 2k 5k 10kHzTHD+NInput = -1 dBFSCS5340VAAIN2200

Page 9 - 9. Conclusion

AN2498Some applications may require signal attenuation prior to the converter. The full-scale input voltage of theCS5340 will scale with the analog po

Page 10 - Revision Date Change

AN24998. Capacitor Size on the Reference Pin (FILT+)The CS5340 and CS5333 require external capacitance on the internal reference voltage pin. For theC

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Cirrus-logic AN249 Manuel d'utilisateur

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