CS5335 datasheet(7/20 Pages) CIRRUS

Numer części	CS5335

Szczegółowy opis	20-Bit, Stereo A/D Converter for Digital Audio

Download	20 Pages

Scroll/Zoom	100%

Producent	CIRRUS [Cirrus Logic]

Strona internetowa	http://www.cirrus.com

Logo

7 / 20 page

SYSTEM DESIGN

The CS5334 and CS5335 are 20-bit, 2-channel

Analog-to-Digital Converters designed for digital

audio applications. These devices use two one-

bit delta-sigma modulators which simultaneously

sample the analog input signals at 128 times the

output sample rate (Fs). The resulting serial bit

streams are digitally filtered, yielding a pair of

20-bit values. This technique yields nearly ideal

conversion performance independent of input

frequency and amplitude. The converter does not

require difficult-to-design or expensive anti-alias

filters and does not require external sample-and-

hold amplifiers or a voltage reference. Very few

external components are required to support

these ADCs. Normal power supply decoupling

components and a resistor and capacitor on each

input for anti-aliasing are all that’s required, as

shown in Figure 1.

An on-chip voltage reference provides for a dif-

ferential input signal range of 2.0 Vrms. Output

data is available in serial form, coded as

2’s complement, 20-bit numbers. Typical power

consumption is 325 mW which can be reduced

to 1.0 mW using the power-down feature.

Master Clock

The master clock (MCLK) is the clock source

for the delta-sigma modulator sampling and digi-

tal filters. In Master Mode, the frequency of this

clock must be 256

× Fs. In Slave Mode, the mas-

ter clock must be either 256

×, 384× or 512× Fs.

Table 1 shows some common master clock fre-

quencies.

SERIAL DATA INTERFACE

The CS5334 and CS5335 support three serial

data formats, including I

2S, which are selected

via the digital input format pins DIF0 and DIF1.

The digital input format determines the relation-

ship between the serial data, left/right clock and

serial clock. Table 2 lists the three formats, along

with the associated figure number.

The serial

data interface is accomplished via the serial data

output, SDATA, serial data clock, SCLK, and the

left/right clock, LRCK.

Serial Data

The serial data block consists of 20 bits of audio

data presented in 2’s-complement format with

the MSB-first, followed by 4 bits of zero and 8

Peak Signal Level, PSL, bits as shown in Fig-

ure 2. The data is clocked from SDATA by the

serial clock and the channel is determined by the

Left/Right clock.

LRCK

(kHz)

MCLK (MHz)

256 X

384 X

512 X

32

8.1920

12.2880

16.3840

44.1

11.2896

16.9344

22.5792

48

12.2880

18.4320

24.5760

Table 1. Common Clock Frequencies

SDATA

FRAME

P7

19 18

1

0

P6

P1 P0

20 Audio

Data Bits

4 Zeros

8 PSL Bits

Figure 2. Data Block and Frame

DIF1

DIF0

FORMAT

FIGURE

00

03

01

14

10

25

1

power-down

-

Table 2. Digital Input Formats

CS5334 CS5335

DS237PP2

7

Podobny numer części - CS5335

Producent	Numer części	Arkusz danych	Szczegółowy opis
Cirrus Logic	CS5335	749Kb / 18P	Evaluation Board

More results

Podobny opis - CS5335

Producent	Numer części	Arkusz danych	Szczegółowy opis
Cirrus Logic	CS4329	1Mb / 36P	20-Bit, Stereo D/A Converter for Digital Audio
	CS4328	831Kb / 31P	18-Bit, Stereo D/A Converter for Digital Audio OCT 1993
	CS4390	629Kb / 22P	24-Bit, Stereo D/A Converter for Digital Audio
	CS5126	394Kb / 32P	16-Bit Stereo A/D Converter for Digital Audio
	CS5360	546Kb / 22P	24-Bit Stereo A/D Converter for Digital Audio
	CS4327	1Mb / 36P	Low Cost, 20-Bit, Stereo, Audio D/A Converter
	CS5330A	899Kb / 30P	8-Pin, Stereo A/D Converter for Digital Audio
	CS5330A	254Kb / 16P	8-Pin, Stereo A/D Converter for Digital Audio
	CS4330	1Mb / 38P	8 Pin Stereo D/A Converter for Digital Audio
	CS5336	816Kb / 34P	16-Bit, Stereo A/D Converters for Digital Audio AUG 93

More results

CS5335 Arkusz danych(PDF) 7 Page - Cirrus Logic

CS5335 Arkusz danych(HTML) 7 Page - Cirrus Logic

Podobny numer części - CS5335

Podobny opis - CS5335

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Arkusz danych Pobierz

Link URL