Cirrus Logic CS5341 User Manual

Confidential Draft

3/11/08

CS5341

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

Features

 Advanced Multi-bit Delta-Sigma Architecture
 24-bit Conversion
 Supports All Audio Sample Rates Including

192 kHz

 105 dB Dynamic Range at 5 V
 -98 dB THD+N
 90 mW Power Consumption
 High-Pass Filter to Remove DC Offsets
 Analog/Digital Core Supplies from 3.3 V to 5 V
 Supports Logic Levels between 1.8 V and 5 V
 Auto-Detect Mode Selection in Slave Mode
 Auto-Detect MCLK Divider

General Description

The CS5341 is a complete an alog-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 200 kHz per channel.

The CS5341 uses a 5th-order, multi-bit Delta-Sigma
modulator followed by digital filtering and decimation,
which removes the need for an external anti-alias filter.

The CS5341 is available in a 16-pin TSSOP package
for Commercial (-10° to +70° C) and Automotive grades
(-40° to +85° C). The CDB5341 Customer Demonstra­tion Board is also available for device evaluation and
implementation suggestions. Please refer to “Ordering

Information” on page 22 for complete ordering

information.
The CS5341 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.

Single-Ended

Analog Input

Single-Ended

Analog Input

http://www.cirrus.com

3.3 V to 5 V

Switch-Cap

AINL

ADC

FILT+

VQ

Switch-Cap

AINR

ADC

VA

Internal

Reference

Voltages

High-Pass

Filter

High-Pass

Filter

Copyright © Cirrus Logic, Inc. 2008

VD

3.3 V to 5 V

Low-Latency
Digital Filters

Low-Latency
Digital Filters

(All Rights Reserved)

1.8 V to 5 V

Serial Port

VL

Auto-detect

MCLK Divider

Slave Mode
Auto-detect

M0
M1

Master Clock

SCLK
LRCK

SDOUT

Mode
Configuration

Reset

March '08

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Confidential Draft

TABLE OF CONTENTS

1. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 4

SPECIFIED OPERATING CONDITIONS ............................................................................................... 4

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

ANALOG CHARACTERISTICS - COMMERCIAL GRADE .................................................................... 5

ANALOG CHARACTERISTICS - AUTOMOTIVE GRADE ..................................................................... 6

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

DC ELECTRICAL CHARACTERISTICS ........................................... ... ... .... ... ... ... .... ... ......................... 10

DIGITAL CHARACTERISTICS ............................................................................................................. 10

SWITCHING CHARACTERISTICS - SERIAL AUDIO PORT ............................................ ... .... ... ......... 11

2. PIN DESCRIPTION .............................................................................................................................. 13

3. TYPICAL CONNECTION DIAGRAM ................................................................................................... 14

4. APPLICATIONS ................................................................................................................................... 15

4.1 Single-, Double-, and Quad-Speed Modes .....................................................................................15

4.2 Operation as Either a Clock Master or Slave .................................................................................15

4.2.1 Operation as a Clock Master . .......................................... ... ... ... .... ... ...................................... 16

4.2.2 Operation as a Clock Slave with Auto-Detect .......................... .... ... ... ... .... ... ... ... ... ................ 16

4.2.3 Master Clock ............................ ... .......................................................................................... 17

4.3 Serial Audio Interface ..................................................................................................................... 17

4.4 Power-Up Sequence ...................................................................................................................... 18

4.5 Analog Connections ....................................................................................................................... 18

4.6 Grounding and Power Supply Decoupling ...................... ... .... ... ... ... ... .... .........................................18

4.7 Synchronization of Multiple Devices ............................................................................................... 18

4.8 Capacitor Size on the Reference Pin (FILT+) ................................................................................19

5. PARAMETER DEFINITIONS ................................................................................................................ 20

6. PACKAGE DIMENSIONS ................................................................................................................... 21

THERMAL CHARACTERISTICS .......................................................................................................... 21

7. ORDERING INFORMATION ................................................................................................................ 22

8. REVISION HISTORY ............................................................................................................................ 22

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CS5341

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LIST OF FIGURES

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

Figure 2.Single-Speed Mode Stopband Rejection ....................................... .... ... ... ..................................... 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 Stopband Rejection ..................................................................................... 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 Stopband Rejection ..................................................................................... 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, I²S SAI ................................................................................................................ 12

Figure 16.Slave Mode, I²S SAI .................................................................................................................. 12

Figure 17.Typical Connection Diagram ..................................................................................................... 14

Figure 18.CS5341 Master Mode Clocking ................................................................................................ 16

Figure 19.I²S Serial Audio Interface .......................................................................................................... 17

Figure 20.Left-Justified Serial Audio Interface .......................................................................................... 17

Figure 21.CS5341 Recommended Analog Input Buffer ............................................................................ 18

Figure 22.CS5341 THD+N versus Frequency .......................................................................................... 19

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CS5341

LIST OF TABLES

Table 1. Speed Modes and the Associated Output Sample Rates (Fs) ................................. ... .... ... ... ... ... 15

Table 2. CS5341 Mode Control ................................................................................................................. 15

Table 3. Master Clock (MCLK) Ratios ....................................................................................................... 17

Table 4. Master Clock (MCLK) Frequencies for Standard Audio Sample Rates ...................................... 17

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CS5341

1. CHARACTERISTICS AND SPECIFICATIONS

(All Min/Max characteristics and specifications are guaranteed over the Specified Operating Conditions. Typical
performance characteristics and spe cif icat ion s ar e de riv e d from measurements taken at typical supply voltages
and T

= 25°C.)

A

SPECIFIED OPERATING CONDITIONS

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

Parameter Symbol Min Typ Max Unit

Power Supplies Analog

Digital

Logic

Ambient Operating Temperature Commercial

Automotive

VA
VD
VL

T
T

AC
AC

3.1

3.1

1.7

-10

-40

(Note 1)

3.3

3.3

-

-

5.25

5.25

5.25
70

85

V
V
V

°C
°C

Notes:

1. This part is specified at typical analog vo ltages of 3. 3 V and 5. 0 V. See Ana log Ch arac terist ics - Com­mercial Grade and Analog Characteristics - Automotive Grade, below, for details.

ABSOLUTE MAXIMUM RATINGS

(GND = 0 V, All voltages with respect to ground.) (Note 2)

Parameter Symbol Min Max Units

DC Power Supplies: Analog

Logic

Digital
Input Current (Note 3)
Analog Input Voltage (Note 4)
Digital Input Voltage (Note 4)
Ambient Operating Temperature (Power Applied) T
Storage Temperature

V

T

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

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

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

VA

VL

VD

I

in

V

IND

stg

-0.3

-0.3

-0.3

+6.0
+6.0
+6.0

V
V
V

-10 +10 mA

IN

GND-0.7 VA+0.7 V

-0.7 VL+0.7 V

A

-50 +95

°C

-65 +150 °C

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CS5341

ANALOG CHARACTERISTICS - COMMERCIAL GRADE

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

Dynamic Performance for Commercial Grade VA = 5 V VA = 3.3 V

Single-Speed Mode Fs = 48 kHz

Dynamic Range A-weighted

unweighted

Total Harmonic Distortion + Noise (Note 5)

-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 5)

-1 dB

-20 dB

-60 dB

40 kHz bandwidth -1 dB

Symbol Min Typ Max Min Typ Max Unit

99
96

THD+N

105
102

-

-

-

-98

-82

-42

-92

-

-

-

-

96
93

102

99

-

-95

-

-79

-

-39

-

-

-89

-

-

dB
dB

dB
dB
dB

Symbol Min Typ Max Min Typ Max Unit

99
96

THD+N

105
102

-

-

-

-

-

99

-98

-82

-42

-95

-92

-

-

-

-

-

-

96
93

102

99

-

-

-

-

-

96

-95

-79

-39

-87

-

-

-

-89

-

-

-

dB
dB
dB

dB
dB
dB
dB

Quad-Speed Mode Fs = 192 kHz

Dynamic Range A-weighted

unweighted

40 kHz bandwidth unweighted

Total Harmonic Distortion + Noise (Note 5)

-1 dB

-20 dB

-60 dB

40 kHz bandwidth -1 dB

Dynamic Performance All Modes

Interchannel Isolation - 90 - dB

Symbol Min Typ Max Min Typ Max Unit

99
96

THD+N

105
102

-

-

-

-

-

99

-98

-82

-42

-95

-92

-

-

-

-

-

-

96
93

102

99

-

-

-

-

-

96

-95

-79

-39

-87

Min Typ Max

-

-

-

-89

-

-

-

dB
dB
dB

dB
dB
dB
dB

Unit

DC Accuracy

Interchannel Gain Mismatch - 0.1 - dB
Gain Error -5 - +5 %
Gain Drift -

±100 - ppm/°C

Analog Input Characteristics

Full-Scale Input Voltage 0.53*VA 0.56*VA 0.59*VA Vpp
Input Impedance - 25 -

kΩ

5. Referred to the typical full-scale input voltage

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CS5341

ANALOG CHARACTERISTICS - AUTOMOTIVE GRADE

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

Dynamic Performance for Automotive Grade VA = 5 V VA = 3.3 V

Single-Speed Mode Fs = 48 kHz

Dynamic Range A-weighted

unweighted

Total Harmonic Distortion + Noise (Note 6)

-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 6)

-1 dB

-20 dB

-60 dB

40 kHz bandwidth -1 dB

Symbol Min Typ Max Min Typ Max Unit

97
94

THD+N

105
102

-

-

-

-98

-82

-42

-

-

-90

-

-

94
91

102

99

-

-95

-

-79

-

-39

-87

-

-

-

-

dB
dB

dB
dB
dB

Symbol Min Typ Max Min Typ Max Unit

97
94

THD+N

105
102

-

-

-

-

-

99

-98

-82

-42

-95

-

-

-

-90

-

-

-

94
91

102

99

-

-

-

-

-

96

-95

-79

-39

-87

-87

-

-

-

-

-

-

dB
dB
dB

dB
dB
dB
dB

Quad-Speed Mode Fs = 192 kHz

Dynamic Range A-weighted

unweighted

40 kHz bandwidth unweighted

Total Harmonic Distortion + Noise (Note 6)

-1 dB

-20 dB

-60 dB

40 kHz bandwidth -1 dB

Dynamic Performance All Modes

Interchannel Isolation - 90 - dB

Symbol Min Typ Max Min Typ Max Unit

97
94

THD+N

105
102

-

-

-

-

-

99

-98

-82

-42

-95

-

-

-

-90

-

-

-

94
91

102

99

-

-

-

-

-

96

-95

-79

-39

-87

Min Typ Max

-87

-

-

-

-

-

-

dB
dB
dB

dB
dB
dB
dB

Unit

DC Accuracy

Interchannel Gain Mismatch - 0.1 - dB
Gain Error -10 - +10 %
Gain Drift - ±100 - ppm/°C

Analog Input Characteristics

Full-Scale Input Voltage 0.50*VA 0.56 *VA 0.62*VA Vpp
Input Impedance - 25 -

kΩ

6. Referred to the typical full-scale input voltage

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CS5341

DIGITAL FILTER CHARACTERISTICS

Parameter Symbol Min Typ Max Unit

Single-Speed Mode

Passband (-0.1 dB) (Note 7) 0 - 0.4895 Fs
Passband Ripple -0.035 - 0.035 dB
Stopband (Note 7) 0.5687 - - Fs
Stopband Attenuation 70 - - dB
Total Group Delay (Fs = Output Sample Rate) t

gd

Double-Speed Mode

Passband (-0.1 dB) (Note 7) 0 - 0.4895 Fs
Passband Ripple -0.025 - 0.025 dB
Stopband (Note 7) 0.5604 - - Fs
Stopband Attenuation 69 - - dB
Total Group Delay (Fs = Output Sample Rate) t

gd

Quad-Speed Mode

Passband (-0.1 dB) (Note 7) 0 - 0.2604 Fs
Passband Ripple -0.025 - 0.025 dB
Stopband (Note 7) 0.5 - - Fs
Stopband Attenuation 60 - - dB
Total Group Delay (Fs = Output Sample Rate) t

gd

High-Pass Filter Characteristics

Frequency Response -3.0 dB

-0.13 dB (Note 8)
Phase Deviation @ 20 Hz (Note 8) -10 -Deg
Passband Ripple -- 0dB

-12/Fs - s

-9/Fs - s

-5/Fs - s

-120-

-

Hz
Hz

7. Filter characteristics scale precisely with Fs

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

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