Cirrus-logic CS4354 Manuale Utente

Copyright  Cirrus Logic, Inc. 2011 (All Rights Reserved)http://www.cirrus.com5-V Stereo DAC with 2-VRMS Ground-Centered OutputFeatures Advanced mult

10 DS895F2CS4354DIGITAL INTERFACE CHARACTERISTICSTest conditions (unless otherwise specified): GND = 0 V; all voltages with respect to ground.INTERNAL

DS895F2 11CS4354DC ELECTRICAL CHARACTERISTICSTest conditions (unless otherwise specified): VA = 5 V, VL = 3.3 V; GND = 0 V; SDIN = 0; all voltages wit

12 DS895F2CS43543. TYPICAL CONNECTION DIAGRAMVL+1.8 V to +5 VLRCKMCLKSCLK/DEMSDIN-VFILTAOUTAVA470 2.2 nFRextRextLine Level OutLeft & RightDigital

DS895F2 13CS43544. APPLICATIONS4.1 Ground-Centered Line OutputsAn on-chip charge pump creates a negative supply which allows the full-scale output swi

14 DS895F2CS43544.4 Serial ClockThe serial clock controls the shifting of data into the input data buffers. The CS4354 supports both externaland inter

DS895F2 15CS4354Figure 7. De-Emphasis Curve, Fs = 44.1 kHzNote: De-emphasis is only available in Single-Speed Mode.4.5 Internal High-Pass FilterThe C

16 DS895F2CS4354When power is first applied, the POR circuit monitors the VA supply voltage to determine when it reachesa defined threshold, Von1. At

DS895F2 17CS4354USER: Apply PowerUSER: Apply MCLKMCLK/LRCK Ratio DetectionUSER: Apply LRCKPower-On Reset StatePower-Down StateInitialization StatePowe

18 DS895F2CS43544.9 Recommended Operational SequencesThe following sequences are recommended for minimal pops and clicks when transitioning between di

DS895F2 19CS4354shows the recommended power arrangements with VA and VL connected to clean supplies. It is stronglyrecommended that a single ground pl

2 DS895F2CS4354TABLE OF CONTENTS1. PIN DESCRIPTIONS ...

20 DS895F2CS43545. COMBINED DIGITAL AND ON-CHIP ANALOG FILTER RESPONSE PLOTS 0.4 0.5 0.6 0.7 0.8 0.91−120−100−80−60−40−200Single−Speed Stopband Re

DS895F2 21CS43540.45 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0.55−10−9−8−7−6−5−4−3−2−10Double−Speed Transition Band DetailFrequency(normalized to

22 DS895F2CS43546. PARAMETER DEFINITIONSDynamic RangeThe ratio of the full-scale RMS value of the signal to the RMS sum of all other spectral componen

DS895F2 23CS43547. PACKAGE INFORMATION7.1 Dimensions 7.2 Thermal Characteristics 8. ORDERING INFORMATIONINCHES MILLIMETERSDIM MIN NOM MAX MIN NOM MAXA

24 DS895F2CS43549. REVISION HISTORY Release ChangesF1 Changed 1.8 V VL  5.0 V to 1.8 V VL  5.0 V for both high- and low-level input voltage para

DS895F2 3CS4354Figure 14. Double-Speed Stopband Rejection ... 2

4 DS895F2CS43541. PIN DESCRIPTIONS Pin Name Pin # Pin DescriptionVL 1 Serial Audio Interface Power (Input) - Positive power for the serial audio int

DS895F2 5CS43542. CHARACTERISTICS AND SPECIFICATIONS RECOMMENDED OPERATING CONDITIONSGND = 0 V; all voltages with respect to ground.(Note 1)Notes: 1.

6 DS895F2CS4354DAC ANALOG CHARACTERISTICSTest conditions (unless otherwise specified): TA = 25 °C; VA = 5 V, VL = 3.3 V; GND = 0 V; FILT+, -VFILT, and

DS895F2 7CS4354COMBINED DIGITAL AND ON-CHIP ANALOG FILTER CHARACTERISTICSThe filter characteristics have been normalized to the sample rate (Fs) and c

8 DS895F2CS4354SWITCHING SPECIFICATIONS - SERIAL AUDIO INTERFACE 12. Not all sample rates are supported for all clock ratios. See Section 4.2 “Sample

DS895F2 9CS4354Figure 1. External Serial Clock Mode Input TimingFigure 2. Internal Serial Clock Mode Input TimingFigure 3. Internal Serial Clock Ge