Cirrus-logic CS5344 Uživatelský manuál stáhnout pdf

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98 dB, 96 kHz, Multi-Bit Audio A/D Converter

Features

 Advanced Multi-Bit  Architecture

 24-bit Conversion

 Supports Audio Sample Rates Up to 108 kHz

 98 dB Dynamic Range at 5 V

 -92 dB THD+N at 5 V

 Low-Latency Digital Filter

 High-Pass Filter to Remove DC Offsets

 Single +3.3 V or +5 V Power Supply

 Power Consumption < 40 mW at 3.3 V

 Master or Slave Operation

 Slave Mode Speed Auto-Detect

 Master Mode Default Settings

 256x or 384x MCLK/LRCK Ratio

 CS5343 Supports I²S Audio Format

 CS5344 Supports Left-Justified Audio Format

General Description

The CS5343/4 is a complete analog-to-digital converter

for digital audio systems. It performs sampling, analog-

to-digital conversion, and anti-alias filtering, generating

24-bit values for both left and right inputs in serial form

at sample rates up to 108 kHz per channel.

The CS5343/4 uses a 3rd-order, multi-bit Delta-Sigma

modulator followed by a digital filter, which removes the

need for an external anti-alias filter.

The CS5343/4 also features a high-impedance sam-

pling network which eliminates costly external

components such as op-amps.

The CS5343/4 is available in a 10-pin TSSOP package

for both Commercial (-40° to +85° C) and Automotive

grades (-40° to +105° C). The CDB5343 Customer

Demonstration Board is also available for device evalu-

ation and implementation suggestions. Please refer to

the “Ordering Information” on page 19 for complete

details.

The CS5343/4 is ideal for audio systems requiring wide

dynamic range, negligible distortion and low noise, such

as set-top boxes, DVD-karaoke players, DVD record-

ers, A/V receivers, and automotive applications.

High-Pass

Filter

High-Pass

Filter

Low-Latency

Digital Filters

3.3 V to 5 V

Internal

Reference

Voltages

High-Z

Sampling

Network

Auto-detect

MCLK Divider

Master

Clock

Single-Ended

Analog Input

Low-Latency

Digital Filters

High-Z

Sampling

Network

Single-Ended

Analog Input

SCLK

LRCK

SDOUT

FILT+

AINR

AINL

Serial Port

Slave Mode

Auto-detect

High-Pass

Filter

February '11

DS687F4

CS5343/4

Draft

2/1/11

1 2 3 4 5 6 ... 20 21

Shrnutí obsahu

Strany 1 - CS5343/4

Strany 2

10 DS687F4CS5343/4Draft2/1/11Figure 1. CS5343 I²S Serial Audio Interfacettstp hldMSB MSB-1LRCKSCLKSDOUTtslrdtsclkwFigure 2. CS5344 Left-Justified S

Strany 3 - 1. PIN DESCRIPTIONS

DS687F4 11CS5343/4Draft2/1/113. TYPICAL CONNECTION DIAGRAMFigure 3. Typical Connection Diagram AINLAINR681SDOUT9GND7VQVA105FILT+2SCLK3LRCK4MCLKAudio

Strany 4

12 DS687F4CS5343/4Draft2/1/114. APPLICATIONS4.1 Operation as Clock Master or SlaveThe CS5343/4 supports operation as either a clock master or slave.

Strany 5

DS687F4 13CS5343/4Draft2/1/114.1.2 Master Mode OperationAs clock Master, the CS5343/4 generates LRCK and SCLK synchronously on-chip. Table 3 shows the

Strany 6

14 DS687F4CS5343/4Draft2/1/114.2 Serial Audio InterfaceThe CS5343 output is serial data in I²S audio format and the CS5344 output is serial data in L

Strany 7 - DC ELECTRICAL CHARACTERISTICS

DS687F4 15CS5343/4Draft2/1/114.4.1 Component ValuesThree parameters determine the values of resistors R1 and R2 as shown in Figure 6: source impedance

Strany 8 - DIGITAL CHARACTERISTICS

16 DS687F4CS5343/4Draft2/1/114.6 Synchronization of Multiple DevicesIn systems where multiple ADCs are required, care must be taken to achieve simult

Strany 9

DS687F4 17CS5343/4Draft2/1/116. PARAMETER DEFINITIONSDynamic RangeThe ratio of the rms value of the signal to the rms sum of all other spectral compon

Strany 10

18 DS687F4CS5343/4Draft2/1/117. PACKAGE DIMENSIONSNotes:1. Reference document: JEDEC MO-1872. D does not include mold flash or protrusions, which is

Strany 11

DS687F4 19CS5343/4Draft2/1/118. ORDERING INFORMATIONProduct Description Package Pb-Free Grade Temp Range Container Order #CS534398 dB, Multi-Bit Audio

Strany 12 - 4. APPLICATIONS

2 DS687F4CS5343/4Draft2/1/11TABLE OF CONTENTS1. PIN DESCRIPTIONS ...

Strany 13

20 DS687F4CS5343/4Draft2/1/119. REVISION HISTORYRelease ChangesF1Updated “Recommended Operating Conditions” on page 4Updated specifications and limit

Strany 14

DS687F4 21CS5343/4Draft2/1/11Contacting Cirrus Logic SupportFor all product questions and inquiries, contact a Cirrus Logic Sales Representative. To f

Strany 15

DS687F4 3CS5343/4Draft2/1/111. PIN DESCRIPTIONS Pin Name Pin # Pin DescriptionSDOUT 1Serial Audio Data Output (Output) - Output for two’s complement s

Strany 16

4 DS687F4CS5343/4Draft2/1/112. CHARACTERISTICS AND SPECIFICATIONSRECOMMENDED OPERATING CONDITIONSGND = 0 V, all voltages with respect to GND.ABSOLUTE

Strany 17 - 6. PARAMETER DEFINITIONS

DS687F4 5CS5343/4Draft2/1/11ANALOG CHARACTERISTICS - COMMERCIAL GRADE (-CZZ)Test conditions (unless otherwise specified): TA = 25C; Input test signa

Strany 18

6 DS687F4CS5343/4Draft2/1/11ANALOG CHARACTERISTICS - AUTOMOTIVE GRADE (-DZZ)Test conditions (unless otherwise specified): TA = -40C to 85C; Input

Strany 19 - 8. ORDERING INFORMATION

DS687F4 7CS5343/4Draft2/1/11DIGITAL FILTER CHARACTERISTICS Notes:6. Response shown is for Fs equal to 48 kHz. Filter characteristics scale with Fs.DC

Strany 20 - 9. REVISION HISTORY

8 DS687F4CS5343/4Draft2/1/11DIGITAL CHARACTERISTICSParameter Symbol Min Typ Max UnitsHigh-Level Input Voltage (% of VA) VIH60 - - %Low-Level Input

Strany 21

DS687F4 9CS5343/4Draft2/1/11SYSTEM CLOCKING AND SERIAL AUDIO INTERFACELogic “0” = GND = 0 V; Logic “1” = VA, CL = 20 pF. Parameter Symbol Min Typ Max

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