Cirrus-logic CS4348 Manual de usuario Pagina 1

Copyright  Cirrus Logic, Inc. 2013(All Rights Reserved)http://www.cirrus.com10-Pin, 24-Bit, 192 kHz Stereo D/A ConverterFeatures Multi-bit Delta-Sig

10CS4344/5/8Figure 3. External Serial Mode Input TimingFigure 4. Internal Serial Mode Input TimingFigure 5. Internal Serial Clock Generationsclkhts

11CS4344/5/83. TYPICAL CONNECTION DIAGRAMFigure 6. Typical Connection DiagramDEM/SCLK8AudioDataProcessorExternal ClockMCLKAGNDAOUTRCS4344CS4345CS4348

12CS4344/5/84. APPLICATIONSThe CS4344 family accepts data at standard audio sample rates including 48, 44.1 and 32 kHz in SSM, 96, 88.2and 64 kHz in D

13CS4344/5/8 Figure 7. CS4344 Data Format (I2S) Figure 8. CS4345 Data Format (Left Justified) LRCKSCLKLeft ChannelRight ChannelSDATA +3 +

14CS4344/5/8 Figure 9. CS4348 Data Format (Right Justified 16)LRCKSCLKLeft ChannelRight ChannelSDATA654321098715 14 13 12 11 10654321098715 14 13 12

15CS4344/5/84.3 De-EmphasisThe CS4344 family includes on-chip digital deemphasis. Figure 10 shows the deemphasis curve for Fsequal to 44.1 kHz. The fr

16CS4344/5/8When changing clock ratio or sample rate, it is recommended that zero data (or near zero data) be present on SDIN for at least 10 LRCK sam

17CS4344/5/84.6 Grounding and Power Supply DecouplingAs with any high resolution converter, the CS4344 family requires careful attention to power supp

18CS4344/5/85. FILTER PLOTSFigure 12. Single-Speed Stopband Rejection Figure 13. Single-Speed Transition Band0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0

19CS4344/5/8Figure 16. Double-Speed Stopband Rejection Figure 17. Double-Speed Transition Band0.45 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0.55-

2CS4344/5/8TABLE OF CONTENTS1. PIN DESCRIPTIONS ...

20CS4344/5/8Figure 20. Quad-Speed Stopband Rejection Figure 21. Quad-Speed Transition Band0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75-60-50-40-30-20-10

21CS4344/5/86. PARAMETER DEFINITIONSDynamic RangeThe ratio of the full scale rms value of the signal to the rms sum of all other spectral components o

22CS4344/5/87. PACKAGE DIMENSIONSNotes:1. Reference document: JEDEC MO-1872. D does not include mold flash or protrusions which is 0.15 mm max. per si

23CS4344/5/88. ORDERING INFORMATION8.1 Functional CompatibilityCS4334-KS  CS4344-CZZCS4335-KS  CS4345-CZZCS4338-KS  CS4348-CZZCS4334-BS  CS4344-DZ

24CS4344/5/89. REVISION HISTORYRelease ChangesF1-Updated passband and frequency response specifications in “Combined Interpolation & On-chip Analo

3CS4344/5/8LIST OF FIGURESFigure 1.Output Test Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4CS4344/5/81. PIN DESCRIPTIONSPin Name # Pin DescriptionSDIN 1 Serial Audio Data Input (Input) - Input for two’s complement serial audio data.DEM/SCLK

5CS4344/5/82. CHARACTERISTICS AND SPECIFICATIONS(All Min/Max characteristics and specifications are guaranteed over the Specified Operating Conditions

6CS4344/5/8DAC ANALOG CHARACTERISTICS(Full-Scale Output Sine Wave, 997 Hz (Note 1), Fs = 48/96/192 kHz; Test load RL = 3 k, CL = 10 pF (Figure 1). Me

7CS4344/5/8COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE(The filter characteristics have been normalized to the sample rate (Fs) and can

8CS4344/5/8DIGITAL INPUT CHARACTERISTICS7. Iin for LRCK is ±20 A max.POWER AND THERMAL CHARACTERISTICS 8. Current consumption increases with increas

9CS4344/5/8SWITCHING CHARACTERISTICS - SERIAL AUDIO INTERFACE11. Not all sample rates are supported for all clock ratios. See Table 1, “Common Clock F