Cirrus Logic CS4352 User Manual

Confidential Draft

6/18/07

CS4352

192 kHz Stereo DAC with 2 Vrms Line Out

Features

 Multi-bit Delta-Sigma Modulator
 24-Bit Resolution
 Supports Sample Rates up to 192 kHz
 106 dB A-wt Dynamic Range
 -93 dB THD+N
 Integrated Line Driver
 2 Vrms Output into 5 kΩ AC Load
 Analog Low-Pass Filter
 Stereo Mutes with Auto-Mute Function
 Low Clock-Jitter Sensitivity
 Low-Latency Digital Filtering
 Popguard

and Pops

 Single-Ended Outputs
 +3.3 V Core, +9 to 12 V Analog, and +1.5 to

3.3 V Interface Power Supplies

 Low Power Consumption
 20-pin TSSOP, Lead-Free Assembly

®

Technology for Control of Clicks

Description

The CS4352 is a complete stereo digital-to-analog sys­tem including digital interpolation, fifth-order multi-bit
delta-sigma digital-to-analog conversion, digital de-em­phasis, analog filtering, and on-chip 2 Vrms line-level
driver. The advantages of this architecture include ideal
differential linearity, no distortion mechanisms due to re­sistor matching errors, no linearity drift over time and
temperature, high tolerance to clock jitter, and a minimal
set of external components.

The CS4352 is available in a 20-pin TSSOP package in
both Commercial grade (-40°C to +85°C) and Automo­tive grade (-40°C to +105°C). The CDB4352 Customer
Demonstration Board is also available for device evalu­ation and implementation suggestions. Please see

“Ordering Information” on page 20 for complete details.

These features are ideal for cost-sensitive, 2-channel
audio systems including video game consoles, DVD
players, A/V receivers, set-top boxes, digital TVs and
DVD Recorders, mini-component systems, and mixing
consoles.

1.5 V to 3.3 V

Hardware Control

Reset

Serial Audio Input

http://www.cirrus.com

Level Translator

Hardware

Configuration

PCM

Serial

Interface

Auto Speed Mode

Detect

Interpolation

Filter

Interpolation

Filter

3.3 V

Multibit

∆Σ Modulator

Multibit

∆Σ Modulator

Copyright © Cirrus Logic, Inc. 2007

(All Rights Reserved)

DAC

DAC

Internal Voltage

Reference

9 V to 12 V

Amp

+

Filter

Amp

+

Filter

External

Mute

Control

2 Vrms Line Level
Left Channel
Output

2 Vrms Line Level
Right Channel
Output

Left and Right
Mute Controls

JUN '07

DS684F2

TABLE OF CONTENTS

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

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

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

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

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

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

COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE ........................................ 7

SWITCHING SPECIFICATIONS - SERIAL AUDIO INTERFACE ................................................... 8

DIGITAL CHARACTERISTICS ...................................................................... ... ... .... ... ... ... ..................... 9

POWER AND THERMAL CHARACTERISTICS ................................................................................... 9

3. TYPICAL CONNECTION DIAGRAM ................................................................................................... 10

4. APPLICATIONS ................................................................................................................................... 11

4.6.1 Capacitor Placement ............................................................................................................. 13

4.7.1 Power-Up .................... ... .... ... ... ... ....................................... ... ... .... ... ...................................... 14

4.7.2 Power-Down ................................ ... .... ... ... ... .... ... ... ....................................... ... ... ... ................ 14

4.7.3 Discharge Time .............. ....................................................................................................... 14

5. DIGITAL FILTER RESPONSE PLOTS ......................................................................................... 16

6. PARAMETER DEFINITIONS ................................................................................................................ 18

7. PACKAGE DIMENSIONS ................................................................................................................... 19

8. ORDERING INFORMATION ............................................................................................................... 20

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

CS4352

LIST OF FIGURES

Figure 1.Serial Input Timing ...... ... ... ... .... ... ... ... ... .... ... .......................................... ... ... .................................. 8

Figure 2.Typical Connection Diagram ....................................................................................................... 10

Figure 3.I²S, up to 24-Bit Data .................................................................................................................. 12

Figure 4.Right-Justified Data ........................... ... .... ... ... ... .... ... ... ... .... ... ... ................................................... 12

Figure 5.Left-Justified up to 24-Bit Data .................................................................................................... 12

Figure 6.De-Emphasis Curve .................................... ... ... .... ... ... ... .... ......................................................... 13

Figure 7.Single-Speed Stopband Rejection .............................................................................................. 16

Figure 8.Single-Speed Transition Band .................................................................................................... 16

Figure 9.Single-Speed Transition Band (detail) ........................................................................................ 16

Figure 10.Single-Speed Passband Ripple ............. ... ... ... .... ... ... ... .... ... .......................................... ... ......... 16

Figure 11.Double-Speed Stopband Rejection .............................. .... ... ... ... ... .... ... ... ... .... ... ... ... ... .... ... ......... 16

Figure 12.Double-Speed Transition Band ................................................................................................. 16

Figure 13.Double-Speed Transition Band (detail) ..................................................................................... 17

Figure 14.Double-Speed Passband Ripple .................................. .......................................... ................... 17

Figure 15.Quad-Speed Stopband Rejection ............................................................................................. 17

Figure 16.Quad-Speed Transition Band ............................. ... ... ... .... ... ... ... ... .... ... ... ... .... ... ... ... ... .... ... ......... 17

Figure 17.Quad-Speed Transition Band (detail) ................................. ... ... ... .... ... ... ... .... ... ... ... ... .... ... ......... 17

Figure 18.Quad-Speed Passband Ripple ................................................................................................. 17

LIST OF TABLES

Table 1. CS4352 Auto-Detect ................................................................................................................... 11

Table 2. Single-Speed Mode Standard Frequencies ................................................................................11

Table 3. Double-Speed Mode Standard Frequencies ............................................................................... 11

Table 4. Quad-Speed Mode Standard Frequencies ................................................................................. 11

Table 5. Digital Interface Format ............................................................................................................... 12

2 DS684F2

1. PIN DESCRIPTIONS

CS4352

SDIN VL
SCLK AMUTEC
LRCK AOUTA

MCLK VA_H

VD GND

GND AOUTB
DIF1 BMUTEC
DIF0 VQ
DEM VBIAS

RST

1
2
3
4
5
6
7
8
9
10

20
19
18
17
16
15
14
13
12
11

VA

Pin Name Pin # Pin Description

SDIN 1 Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
SCLK 2 Serial Clock (Input) - Serial clock for the serial audio interface.

LRCK 3
MCLK 4 Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters.

VD 5 Digital Power (Input) - Positive power supply for the digital section.
GND
DIF0

DIF1
DEM 9

RST
VA 11 Low Voltage Analog Power (Input) - Positive power supply for the analog section.

VBIAS 12 Positive Voltage Reference (Output) - Positive reference voltage for the internal DAC.
VQ 13 Quiescent Voltage (Output) - Filter connection for internal quiescent voltage.
VA_H 17 High Voltage Analog Power (Input) - Positive power supply for the analog section.
VL 20 Serial Audio Interface Power (Input) - Positive power for the serial audio interface

BMUTEC
AMUTEC

AOUTB
AOUTA

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

6

Ground (Input) - Ground reference.

16

87Digital Interface Format (Input) - Defines the required relationship between the Left/Right Clock, Serial

Clock, and Serial Audio Data.
De-emphasis (Input) - Selects the standard 15 µs/50 µs digital de-emphasis filter response for 44.1 kHz

sample rates
Reset (Input) - Powers down the device and resets all internal registers to their default settings when

10

enabled.

14

Mute Control (Output) - Control signal for optional mute circuit.

19
1518Analog Outputs (Output) - The full-scale analog line output level is specified in the Analog Characteris-

tics table.

DS684F2 3

CS4352

2. CHARACTERISTICS AND SPECIFICATIONS

RECOMMENDED OPERATING CONDITIONS

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

Parameters Symbol Min Typ Max Units

DC Power Supply High Voltage Analog power

Low Voltage Analog power

Digital power

Interface power

Ambient Operating Temperature (power applied) -CZZ

-DZZ

V

A_H

V
V
V

T

8.40

A
D
L

A

3.13

3.13

1.43

-40

-40

9

3.3

3.3

1.5

12.6

3.47

3.47

3.47

-

-

+85

+105

V
V
V
V

°C
°C

ABSOLUTE MAXIMUM RATINGS

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

Parameters Symbol Min Max Units

DC Power Supply High Voltage Analog power

Low Voltage Analog power

Digital power

Interface power
Input Current, Any Pin Except Supplies I
Digital Input Voltage Digital Interface V
Ambient Operating Temperature (power applied) T
Storage Temperature T

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

V

A_H

V
V
V

in

IN-L

stg

-0.3

A
D
L

A

-0.3

-0.3

-0.3

-±10mA

-0.3 VL+ 0.4 V

-55 +125 °C

-65 +150 °C

14.0

3.63

3.63

3.63

V
V
V
V

4 DS684F2

CS4352

DAC ANALOG CHARACTERISTICS - COMMERCIAL (-CZZ)

Test conditions (unless otherwise specified): TA = 25 °C, VA_H = 9 V, VA = 3.3 V, VD = 3.3 V GND = 0 V; VBIAS+
and VQ capacitors as shown in Figure 2 on page 10; input test signal is a 997 Hz sine wave at 0 dBFS; measure-

ment bandwidth 10 Hz to 20 kHz.

Parameter Symbol Min Typ Max Unit

All Speed Modes Fs = 48, 96, and 192 kHz

Dynamic Range (Note 1) 24-bit A-Weighted

unweighted

16-bit A-Weighted

unweighted

Total Harmonic Distortion + Noise (Note 1)

24-bit 0 dB

-20 dB

-60 dB

16-bit 0 dB

-20 dB

-60 dB
Idle Channel Noise / Signal-to-noise ratio (A-wt) - 106 - dB
Interchannel Isolation ( 1 kHz) - 99 - dB

THD+N

Analog Output - All Modes

Full Scale Output Voltage 1.84 2.00 2.11 Vrms
Common Mode Voltage V
Max Current draw from an AOUT pin I
Max Current draw from VQ I
Interchannel Gain Mismatch - 0.1 - dB
Gain Drift - 100 - ppm/°C
Output Impedance Z
AC-Load Resistance R
Load Capacitance C

Q

OUTmax

Qmax

OUT

L
L

100

97

-

-

-

-

-

-

-

-

-

-4-Vdc

- 575 - µA

-1-µA

-50-Ω

5--kΩ

--100pF

106
103

98
95

-93

-83

-43

-93

-75

-35

-

-

-

-

-89

-77

-37

-

-

-

dB
dB
dB
dB

dB
dB
dB
dB
dB
dB

Notes:

1. One-half LSB of triangular PDF dither is added to data.

DS684F2 5

CS4352

DAC ANALOG CHARACTERISTICS - AUTOMOTIVE (-DZZ)

Test conditions (unless otherwise specified): TA = -40°C to 85°C, VA_H = 9 V, VA = 3.3 V, VD = 3.3 V GND = 0 V;
VBIAS+ and VQ capacitors as shown in Figure 2 on page 10; input test signal is a 997 Hz sine wave at 0 dBFS;

measurement bandwidth 10 Hz to 20 kHz.

Parameter Symbol Min Typ Max Unit

All Speed Modes Fs = 48, 96, and 192 kHz

Dynamic Range (Note 2) 24-bit A-Weighted

unweighted

16-bit A-Weighted

unweighted

Total Harmonic Distortion + Noise (Note 2)

24-bit 0 dB

-20 dB

-60 dB

16-bit 0 dB

-20 dB

-60 dB
Idle Channel Noise / Signal-to-noise ratio (A-wt) - 106 - dB
Interchannel Isolation (1 kHz) - 99 - dB

THD+N

Analog Output - All Modes

Full Scale Output Voltage 1.81 2.00 2.17 Vrms
Common Mode Voltage V
Max Current draw from an AOUT pin I
Max Current draw from VQ I
Interchannel Gain Mismatch - 0.1 - dB
Gain Drift - 100 - ppm/°C
Output Impedance Z
AC-Load Resistance R
Load Capacitance C

Q

OUTmax

Qmax

OUT

L
L

96
93

-

-

-

-

-

-

-

-

-

-4-Vdc

-575-µA

-1-µA

-50-Ω

5--kΩ

- - 100 pF

106
103

98
95

-93

-83

-43

-93

-75

-35

-

-

-

-

-89

-73

-33

-

-

-

dB
dB
dB
dB

dB
dB
dB
dB
dB
dB

Notes:

2. One-half LSB of triangular PDF dither is added to data.

6 DS684F2