Cirrus Logic CS5344 User Manual

High-Pass

Filter

High-Pass

Filter

Low-Latency Digital F ilters

3.3 V to 5 V

Interna l

Reference

Voltages

High-Z Sampling Network

Auto-detect

MCLK Divider

Master

Clock

Single-Ended

Analog Input

Low-Latency Digital F ilters

High-Z Sampling Network

Single-Ended

Analog Input

SCLK LRCK

SDOUT

FILT+

AINR

AINL

Serial Port

Slave Mode Auto-detect

High-Pass

Filter

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CS5343/4

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 perfor ms sa mplin g, an alog 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 sampling 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 evaluation 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 recorders, A/V receivers, and automotive applications.

http://www.cirrus.com

February '11

DS687F4

TABLE OF CONTENTS

1. PIN DESCRIPTIONS .............................................................................................................................. 3

2. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 4

RECOMMENDED OPERATING CONDITIONS ..................................................................................... 4

ABSOLUTE MAXIMUM RATINGS ......................................................................................................... 4

ANALOG CHARACTERISTICS - COMMERCIAL GRADE (-CZZ) ......................................................... 5

ANALOG CHARACTERISTICS - AUTOMOTIVE GRADE (-DZZ) ......................................................... 6

DIGITAL FILTER CHARACTERISTICS ................................................................................................7

DC ELECTRICAL CHARACTERISTICS ........................ ... ... .......................................... ... ... .... ... ........... 7

DIGITAL CHARACTERISTICS ............................................................................................................... 8

SYSTEM CLOCKING AND SERIAL AUDIO INTERFACE ..................................................................... 9

3. TYPICAL CONNECTION DIAGRAM ................................................................................................... 11

4. APPLICATIONS ................................................................................................................................... 12

4.1 Operation as Clock Master or Slave ............................................................................................... 12

4.1.1 Slave Mode Operation .................... .... ... ... ....................................... ... ... .... ... ... ... ... .... ............ 12

4.1.2 Master Mode Operation ......................................................................................................... 13

4.1.2.1 Master Mode Speed Selection ................................................................................... 13

4.1.3 Master Clock ............................................... .... ... ... ... .... ... ... ... ................................................ 13

4.2 Serial Audio Interface ..................................................................................................................... 14

4.3 Digital Interface ............................................................................................................................... 14

4.4 Analog Connections ....................................................................................................................... 14

4.4.1 Component Values ... .......................................... .......................................... ... ...................... 15

4.5 Grounding and Power Supply Decoupling ...................... ... .... ... ... ... ... .... .........................................15

4.6 Synchronization of Multiple Devices ............................................................................................... 16

5. FILTER PLOTS - ALL SPEED MODES ............................................................................................... 16

6. PARAMETER DEFINITIONS ................................................................................................................ 17

7. PACKAGE DIMENSIONS .................................................................................................................... 18

THERMAL CHARACTERISTICS .......................................................................................................... 18

8. ORDERING INFORMATION ................................................................................................................ 19

9. REVISION HISTORY ............................................................................................................................ 20

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1 2 3 4 5

SDOUT

SCLK

LRCK

MCLK

FILT+

VA GND

AINR

AINL

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1. PIN DESCRIPTIONS

Pin Name Pin # Pin Description

SDOUT 1 SCLK 2 Serial Clock (Input/Output) - Serial clock for the serial audio interface. LRCK 3 MCLK 4 Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters.

FILT+ 5 Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits. AINL

AINR VQ 7 Quiescent Voltage (Output) - Filter connection for the internal quiescent reference voltage. GND 9 Ground (Input) - Ground reference. Must be connected to analog ground. VA 10 Power (Input) - Positive power supply for the digital and analog sections.

Serial Audio Data Output (Output) - Output for two’s complement serial audio data. Also selects Master or Slave Mode; See Section 4.1 on page 12 for details.

Left Right Clock (Input/Output) - Determines which channel, Left or Right, is currently active on the serial audio data line.

68Analog Input (Input) - The full-scale analog input level is specified in the Analog Characteristics specifi-

cation table.

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2. CHARACTERISTICS AND SPECIFICATIONS

RECOMMENDED OPERATING CONDITIONS

GND = 0 V, all voltages with respect to GND.

Parameter Symbol Min Typ Max Unit

Power Supplies

Ambient Operating Temperature Commercial (-CZZ)

Automotive (-DZZ)

T T

AC AD

3.1

4.75

-40

3.3

5.0

3.5

5.25

105

ABSOLUTE MAXIMUM RATINGS

GND = 0 V, all voltages with respect to GND. (Note 1)

Parameter Symbol Min Max Unit

DC Power Supplies VA -0.3 +6.0 V Input Current (Note 2) I Input Voltage (Note 3) V Ambient Operating Temperature (Power Applied) T Storage Temperature T

IN A

stg

-10 10 mA

-0.7 VA+0.7 V

-50 +115 C

-65 +150 C

V V

°C °C

Notes:

1. Operation beyond these limits may result in permanent damage to the device. Normal operation is not guaranteed at these extremes.

2. Any pin except supplies. Transient currents of up to ±100 mA on the analog input pins will not cause SCR latch-up.

3. The maximum over/under voltage is limited by the input current.

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ANALOG CHARACTERISTICS - COMMERCIAL GRADE (-CZZ)

Test conditions (unless otherwise specified): TA = 25C; Input test signal is a 997 Hz sine wave through recommended inputs as seen in Figure 6 on page 14; source impedance less than or equal to 2.5 k; valid with FILT+ and VQ components as shown in Figure 3 on page 11; measurement bandwidth is 10 Hz to 20 kHz; Fs = 48 kHz

or 96 kHz.

Dynamic Performance for Commercial Grade

Symbol Min Typ Max Min Typ Max Unit

Dynamic Range A-weighted

unweighted

Total Harmonic Distortion + Noise (Note 4)

-1 dB

-20 dB

-60 dB

THD+N

Dynamic Performance for Commercial Grade

Interchannel Isolation - 90 - dB

VA = 3.3 V VA = 5.0 V

91 88

94 91

-89

-71

-31

-86

95 92

98 95

-92

-75

-35

-89

VA=3.3V and VA=5.0V

Min Typ Max Unit

dB dB

dB dB dB

DC Accuracy

Interchannel Gain Mismatch - - 0.1 dB Gain Error -3 - +3 % Gain Drift -

100 - ppm/°C

Analog Input Characteristics

Full-scale Input Voltage VA = 3.3 V nom 0.560*VA 0.568*VA 0.575*VA Vpp Full-scale Input Voltage VA = 5 V nom 0.552*VA 0.559*VA 0.567*VA Vpp Input Impedance - 7.5 - M

Notes:

4. Referred to the typical full-scale input voltage

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ANALOG CHARACTERISTICS - AUTOMOTIVE GRADE (-DZZ)

Test conditions (unless otherwise specified): TA = -40C to 85C; Input test signal is a 997 Hz sine wave through recommended inputs as seen in Figure 6 on page 14; source impedance less than or equal to 2.5 k; valid with FILT+ and VQ components as shown in Figure 3 on page 11; measurement bandwidth is 10 Hz to 20 kHz;

Fs = 48 kHz or 96 kHz.

Dynamic Performance for Automotive Grade

Symbol Min Typ Max Min Typ Max Unit

Dynamic Range A-weighted

unweighted

Total Harmonic Distortion + Noise (Note 5)

-1 dB

-20 dB

-60 dB

THD+N

Dynamic Performance for Automotive Grade

Interchannel Isolation - 90 - dB

VA = 3.1 to 3.5 V VA = 4.75 to 5.25 V

86 83

94 91

-88

-71

-31

-76

98 95

-91

-75

-35

-84

VA = 3.1 V to 3.5 V and VA = 4.75 V to 5.25 V

Min Typ Max Unit

dB dB

dB dB dB

DC Accuracy

Interchannel Gain Mismatch - - 0.1 dB Gain Error -3 - +3 % Gain Drift -

100 - ppm/°C

Analog Input Characteristics

Full-scale Input Voltage VA = 3.1 V to 3.5 V 0.523*VA 0.567*VA 0.612*VA Vpp Full-scale Input Voltage VA = 4.75V to 5.25 V 0.54 3*VA 0.560*VA 0.573*VA Vpp Input Impedance - 7.5 - M

Notes:

5. Referred to the typical full-scale input voltage

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DIGITAL FILTER CHARACTERISTICS

Parameter Symbol Min Typ Max Unit

All Speed Modes

Passband (-0.1 dB) 0 - 0.489 Fs Passband Ripple -0.031 - 0.031 d B Stopband 0.560 - - Fs Stopband Attenuation 60 - - dB Total Group Delay (Fs = Output Sample Rate) t

-12/Fs- s

High-Pass Filter Characteristics

Frequency Response -3.0 dB

-0.13 dB (Note 6) Phase Deviation @ 20Hz (Note 6) -10-Deg Passband Ripple - - 0 dB

-120-

Notes:

6. Response shown is for Fs equal to 48 kHz. Filter characteristics scale with Fs.

DC ELECTRICAL CHARACTERISTICS

GND = 0 V, all voltages with respect to 0 V. MCLK=12.288 MHz; Master Mode.

Parameter Symbol

Power Supply Current (Normal Operation) I Power Supply Current (Power-Down Mode) (Note 7) I Power Consumption (Normal Operation)

(Power-Down Mode) (Note 7)

Parameter Symbol Min Typ Max Unit

Power Supply Rejection Ratio (1 kHz) (Note 8)

Nominal Voltage

Output Impedance Filt+ Nominal Voltage

Output Impedance Maximum allowable DC current source/sink

Notes:

7. Device enters power-down mode when MCLK is held static.

8. Valid with the recommended capacitor values on FILT+ and VQ as shown in the Typical Connection Diagram.

VA = 3.3 V VA = 5.0 V

Min Typ Max Min Typ Max Unit

A A

PSRR - 65 - dB

- 11 15 - 12 17 mA

-10--40 - uA

36<150--

0.44xVA 25

220

2.5

85-mW

k

V k uA

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