Cirrus-logic CS4352 Manuale Utente

Copyright © Cirrus Logic, Inc. 2007(All Rights Reserved)http://www.cirrus.com192 kHz Stereo DAC with 2 Vrms Line OutFeatures Multi-bit Delta-Sigma Mo

10 DS684F2CS43523. TYPICAL CONNECTION DIAGRAMDigitalAudioSourceVLGNDMCLKVDAOUTA0.1 µF10 µF+3.3 V *ModeConfigurationSDINDIF1DIF0DEMOptional Mute Circui

DS684F2 11CS43524. APPLICATIONS4.1 Sample Rate Range/Operational Mode DetectThe device operates in one of three operational modes. The allowed sample

12 DS684F2CS43524.3 Digital Interface FormatThe device will accept audio samples in 1 of 4 digital interface formats, as illustrated in Table 5. The d

DS684F2 13CS43524.4 De-Emphasis ControlThe device includes on-chip digital de-emphasis. Figure 6 shows the de-emphasis curve for Fs equal to44.1 kHz.

14 DS684F2CS43524.7 Popguard Transient ControlThe CS4352 uses a novel technique to minimize the effects of output transients during power-up and power

DS684F2 15CS43524.9 Initialization and Power-Down Sequence DiagramUSER: Apply PowerWait StateUSER: Apply MCLK, SCLK, and LRCKMCLK/LRCK Ratio Detection

16 DS684F2CS43525. DIGITAL FILTER RESPONSE PLOTS 0.4 0.5 0.6 0.7 0.8 0.9 1−120−100−80−60−40−200Frequency(normalized to Fs)Amplitude (dB)0.4 0.4

DS684F2 17CS43520.45 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0.55109876543210Frequency(normalized to Fs)Amplitude (dB)0 0.05 0.1 0.15 0.2 0.25 0.3

18 DS684F2CS43526. PARAMETER DEFINITIONSTotal Harmonic Distortion + Noise (THD+N)The ratio of the rms value of the signal to the rms sum of all other

DS684F2 19CS43527. PACKAGE DIMENSIONS 1. “D” and “E1” are reference datums and do not included mold flash or protrusions, but do include moldmismatch

2 DS684F2CS4352TABLE OF CONTENTS1. PIN DESCRIPTIONS ...

20 DS684F2CS43528. ORDERING INFORMATION 9. REVISION HISTORY Release ChangesPP1Lowered VA_H minimum specification.Updated Idle channel noise specificat

DS684F2 3CS43521. PIN DESCRIPTIONS Pin Name Pin # Pin DescriptionSDIN 1 Serial Audio Data Input (Input) - Input for two’s complement serial audio dat

4 DS684F2CS43522. CHARACTERISTICS AND SPECIFICATIONS RECOMMENDED OPERATING CONDITIONS(GND = 0 V; all voltages with respect to ground.)ABSOLUTE MAXIMUM

DS684F2 5CS4352DAC ANALOG CHARACTERISTICS - COMMERCIAL (-CZZ)Test conditions (unless otherwise specified): TA = 25 °C, VA_H = 9 V, VA = 3.3 V, VD = 3.

6 DS684F2CS4352DAC ANALOG CHARACTERISTICS - AUTOMOTIVE (-DZZ)Test conditions (unless otherwise specified): TA = -40°C to 85°C, VA_H = 9 V, VA = 3.3 V,

DS684F2 7CS4352COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE(The filter characteristics have been normalized to the sample rate (Fs) and

8 DS684F2CS4352SWITCHING SPECIFICATIONS - SERIAL AUDIO INTERFACE Parameters Symbol Min Max UnitsMCLK Frequency 1.024 48.0 MHzMCLK Duty Cycle 45

DS684F2 9CS4352DIGITAL CHARACTERISTICSPOWER AND THERMAL CHARACTERISTICS Notes:6. Current consumption increases with increasing FS and increasing MCLK