Cirrus Logic CS5361 User Manual

CS5361

114 dB, 192 kHz, Multi-Bit Audio A/D Converter

Features

z Advanced Multi-bit Delta-sigma Architecture z 24-bit Conversion z 114 dB Dynamic Range z -105 dB THD+N z System Sampling Rates up to 192 kHz z 135 mW Power Consumption z High-pass Filter and DC Offset Calibration z Supports Logic Levels Between 5 and 2.5 V z Differential Analog Architecture z Overflow Detection z Pin-compatible with the CS5381

General Description

The CS5361 is a complete analog-to-digital converter for digital audio systems. It performs sampling, analog-todigital conversion, and ant i-alias filtering. The CS5361 generates 24-bit values for both left and right inputs in serial form at sample rates up to 192 kHz per channel.

The CS5361 uses a 5th-order, multi-bit, delta-sigma modulator followed by digital filtering and decimation. This removes the need for an external anti-alias filter. The ADC uses a differential a r chit ec tu re wh ich pr ov ide s excellent noise rejection.

The CS5361 is ideal for audio systems requiring wide dynamic range, negligible distortion, and low noise. These applications include A/V receivers, DVD-R, CD-R, digital mixing consoles, and effects processors.

ORDERING INFORMATION

CS5361-KSZ -10° to 70°C 24-pin SOIC Lead Free CS5361-KZZ -10° to 70°C 24-pin TSSOP Lead Free CS5361-DZZ -40° to 85°C 24-pin TSSOP Lead Free CDB5361 Evaluation Board

FILT+

AINL-

AINL+

AINR-

AINR+

http://www.cirrus.com

VQ LRCK

Volt age Reference

S/H

REFGND

LP Filter

DAC

LP Filter

DAC

OVFL

Serial Output Interface

∆Σ

Digital

Decimation

Filter

Digital

Decimation

Filter

SCLK

SDOUT MCLK

High Pass Filter

RST

I2S/LJ

M/S

HPF MDIV

MODE0

MODE1

FEB ‘05

DS467F2

TABLE OF CONTENTS

1.0 CHARACTERISTICS AND SPECIFICATIONS ......................................................................4

Specified Operating Conditions ................................................................................................4

Absolute Maximum Ratings......................................................................................................4

Analog Characteristics (CS5361-KSZ/KZZ)..............................................................................5

Analog Characteristics (CS5361-DZZ) ..................................................................................... 6

Digital Filter Characteristics......................................................................................................7

DC Electrical Characteristics ..... ... .... ... ... ... ... .... ...................................... .... ... ... ... .... ... ... ... ... ... 10

Digital Characteristics.............................................................................................................10

Switching Characteristics - Serial Audio Port..........................................................................11

2.0 PIN DESCRIPTIONS ............................................................................................................14

3.0 TYPICAL CONNECTION DIAGRAM .................................................................................... 15

4.0 APPLICATIONS .................... ... ....................................... ... ... .... ... ... ... ................................... 16

4.1 Operational Mode/Sample Rate Range Select ................................................................ 16

4.2 System Clocking ........................................... ... ... .... ... ... ....................................... ... ... ...... 16

4.2.1 Slave Mode ............................... .... ... ... ... .... ... ....................................... ... ... ... ......16

4.2.2 Master Mode ....................................... ... ....................................... ... .... ... ... ... ......17

4.3 Power-up Sequence ..................... ... ....................................... ... ... ... .... ... ... ... .... ... ............18

4.4 Analog Connections .. ....................................... ... .... ... ... ... .... ... ... ... ...................................18

4.5 High-pass Filter and DC Offset Calibration .....................................................................19

4.6 Overflow Detection ...........................................................................................................19

4.6.1 OVFL Output Timing ........................................................................................... 19

4.7 Grounding and Power Supply Decoupling ....................................................................... 19

4.8 Synchronization of Multiple Devices ................................................................................19

5.0 PARAMETER DEFINITIONS ................................................................................................ 20

6.0 PACKAGE DIMENSIONS .................................................................................................. 21

7.0 REVISION HISTORY ............................................................................................................23

CS5361

2 DS467F2

LIST OF FIGURES

Figure 1. Single Speed Mode Stopband Rejection .................... ... ... ... ... .... ... ... ... .... ... . 8

Figure 2. Single Speed Mode Transition Band ...................................... ..................... 8

Figure 3. Single Speed Mode Transition Band (Detail) .............................................. 8

Figure 4. Single Speed Mode Passband Ripple ........................... ... ... ... .... ... ... ... .... ... . 8

Figure 5. Double Speed Mode Stopband Rejection ................................................... 8

Figure 6. Double Speed Mode Transition Band ......................................................... 8

Figure 7. Double Speed Mode Transition Band (Detail) ............................................. 9

Figure 8. Double Speed Mode Passband Ripple ....................................................... 9

Figure 9. Quad Speed Mode Stopband Rejection ................. ..................................... 9

Figure 10. Quad Speed Mode Transition Band .......................................................... 9

Figure 11. Quad Speed Mode Transition Band (Detail) ............................................. 9

Figure 12. Quad Speed Mode Passband Ripple ........................................................ 9

Figure 13. Master Mode, Left Justified SAI .............................................................. 12

Figure 14. Slave Mode, Left Justified SAI ................................................................ 12

Figure 15. Master Mode, I Figure 16. Slave Mode, I

Figure 17. OVFL Output Timing ............................................................................... 12

Figure 18. Left Justified Serial Audio Interface ................ ......................................... 13

Figure 19. I

Figure 20. OVFL Output Timing, I2S Format ...................... .......................... ............ 13

Figure 21. OVFL Output Timing, Left-Justified Format ............................................. 13

Figure 22. Typical Connection Diagram ................................................................... 15

Figure 23. CS5361 Master Mode Clocking ............................................................... 17

Figure 24. CS5361 Recommended Analog Input Buffer .......................................... 18

S SAI ................. .... ...................................... .... ... ... ... .... .. 12

S SAI ................................................................................ 12

S Serial Audio Interface ........................................................................ 13

CS5361

LIST OF TABLES

Table 1. CS5361 Mode Control .............................................................................. 16

Table 2. CS5361 Slave Mode Clock Ratios ........................................................... 16

Table 3. CS5361 Common Master Clock Frequencies .......................................... 17

Table 4. Revision History .... ... ... .......................................... ................................... 23

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CS5361

1.0 CHARACTERISTICS AND SPECIFICATIONS

All Min/Max characteristics and specifications are guaranteed over the specified operating conditions. Typical performance characteristics and specifications are derived from measurements taken at typical supply voltages and T

= 25°C.

SPECIFIED OPERATING CONDITIONS

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

Parameter Symbol Min Typ Max Unit

DC Power Supplies: Positive Analog

Positive Digital

Positive Logic

Ambient Operating Temperature Commercial (-KSZ/-KZZ)

Automotive (-DZZ)

ABSOLUTE MAXIMUM RATINGS

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

Parameter Symbol Min Max Units

DC Power Supplies: Analog

Logic

Digital Input Current (Note 2) I Analog Input Voltage (Note 3) V Digital Input Voltage (Note 3) V Ambient Operating Temperature (Power Applied) T Storage Temperature T

VA VD VL

T T

AC AA

IND

stg

4.75

3.1

2.37

-10

-40

-0.3

-10 +10 mA

- 0.7 VA + 0.7 V

-0.7 VL + 0.7 V

-50 +95 °C

-65 +150 °C

5.0

3.3

5.25

5.25 70

+6.0 +6.0 +6.0

V V V

°C °C

V V V

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.

4 DS467F2

CS5361

ANALOG CHARACTERISTICS (CS5361-KSZ/KZZ)

Test conditions (unless otherwise specified): Input test signal is a 1 kHz sine wave; measurement bandwidth is 10 Hz to 20 kHz.

Parameter Symbol Min Typ Max Unit

Single Speed Mode Fs = 48 kHz

Dynamic Range A-weighted

unweighted

Total Harmonic Distortion + Noise (Note 4)

-1 dB

-20 dB

-60 dB

Double Speed Mode Fs = 96 kHz

Dynamic Range A-weighted

unweighted

40 kHz bandwidth unweighted

Total Harmonic Distortion + Noise (Note 4)

-1 dB

-20 dB

-60 dB

40 kHz bandwidth -1 dB

Quad Speed Mode Fs = 192 kHz

Dynamic Range A-weighted

unweighted

40 kHz bandwidth unweighted

Total Harmonic Distortion + Noise (Note 4)

-1 dB

-20 dB

-60 dB

40 kHz bandwidth -1 dB

Dynamic Performance for All Modes

Interchannel Isolation - 110 - dB

DC Accuracy

Interchannel Gain Mismatch - 0.1 - dB Gain Error -2 - 2 % Gain Drift -100 - 100 ppm/°C Offset Error HPF enabled

HPF disabled

Analog Input Characteristics

Full-scale Input Voltage 1.10*VA 1.13*VA 1.15*VA Vpp Input Impedance (Differential) (Note 5) 7.5 - - k Common Mode Rejection Ratio CMRR - 82 - dB

THD+N

108 105

114 111

-105

-91

-51

114 111 108

-105

-91

-51

-102

114 111 108

-105

-91

-51

-102

-99

100

dB dB

dB dB dB

dB dB dB dB

dB dB dB

dB dB dB dB

LSB LSB

Ω

Notes: 4. Referred to the typical full-scale input voltage.

5. Measured between AIN+ and AIN-

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CS5361

ANALOG CHARACTERISTICS (CS5361-DZZ)

Test conditions (unless otherwise specified): Input test signal is a 1 kHz sine wave; measurement bandwidth is 10 Hz to 20 kHz.

Parameter Symbol Min Typ Max Unit

Single Speed Mode Fs = 48 kHz

Dynamic Range A-weighted

unweighted

Total Harmonic Distortion + Noise (Note 4)

-1 dB

-20 dB

-60 dB

Double Speed Mode Fs = 96 kHz

Dynamic Range A-weighted

unweighted

40 kHz bandwidth unweighted

Total Harmonic Distortion + Noise (Note 4)

-1 dB

-20 dB

-60 dB

40 kHz bandwidth -1 dB

Quad Speed Mode Fs = 192 kHz

Dynamic Range A-weighted

unweighted

40 kHz bandwidth unweighted

Total Harmonic Distortion + Noise (Note 4)

-1 dB

-20 dB

-60 dB

40 kHz bandwidth -1 dB

Dynamic Performance for All Modes

Interchannel Isolation - 110 - dB Interchannel Phase Deviation - 0.0001 - Degree

DC Accuracy

Interchannel Gain Mismatch - 0.1 - dB Gain Error -5 - 5 % Gain Drift -100 - 100 ppm/°C Offset Error HPF enabled

HPF disabled

Analog Input Characteristics

Full-scale Input Voltage 1.07*VA 1.13*VA 1.18*VA Vpp Input Impedance (Differential) (Note 5) 7.5 - - k Common Mode Rejection Ratio CMRR - 82 - dB

THD+N

106 103

114

111

-105

-91

-51

114

111

108

-105

-91

-51

-102

114

111

108

-105

-91

-51

-102

-95

100

dB dB

dB dB dB

dB dB dB dB

dB dB dB

dB dB dB dB

LSB LSB

Ω

6 DS467F2

CS5361

DIGITAL FILTER CHARACTERISTICS

Parameter Symbol Min Typ Max Unit

Single Speed Mode (2 kHz to 51 kHz sample rates)

Passband (-0.1 dB) (Note 6) 0 - 0.47 Fs Passband Ripple -0.1 - 0.035 dB Stopband (Note 6) 0.58 - - Fs Stopband Attenuation -95 - - dB Total Group Delay (Fs = Output Sample Rate) t Interchannel Phase Deviation - 0.0001 - Deg

Double Speed Mode (50 kHz to 102 kHz sample rates)

Passband (-0.1 dB) (Note 6) 0 - 0.45 Fs Passband Ripple -0.1 - 0.035 dB Stopband (Note 6) 0.68 - - Fs Stopband Attenuation -92 - - dB Total Group Delay (Fs = Output Sample Rate) t Interchannel Phase Deviation - 0.0001 - Deg

Quad Speed Mode (100 kHz to 204 kHz sample rates)

Passband (-0.1 dB) (Note 6) 0 - 0.24 Fs Passband Ripple -0.1 - 0.035 dB Stopband (Note 6) 0.78 - - Fs Stopband Attenuation -92 - - dB Total Group Delay (Fs = Output Sample Rate) t Interchannel Phase Deviation - 0.0001 - Deg

High-pass Filter Characteristi cs

Frequency Response -3.0 dB

-0.13 dB (Note 7) Phase Deviation @ 20 Hz (Note 7) - 10 - Deg Passband Ripple - - 0 dB Filter Settling Time 10

-12/Fs- s

-9/Fs- s

-5/Fs- s

-120-

/Fs s

Hz Hz

Notes: 6. The filter frequency response scales precisely with Fs.

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

DS467F2 7

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