Instruction Manual

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Evaluation Board for CS4352

Features

 Demonstrates Recommended Layout And

Grounding Arrangements

 CS8416 Receives S/PDIF, & EIAJ-340-

Compatible Digital Audio

 Headers for External PCM Audio

 Requires Only a Digital Signal Source and

Power Supplies for a Complete Digital-to-

Analog Converter System

Description

The CDB4352 evaluation board is an excellent means

for quickly evaluating the CS4352 24-bit, high-perfor-

mance stereo D/A converter. Evaluation requires an

analog signal analyzer, a digital signal source, and a

power supply. Analog line-level outputs are provided via

RCA phono jacks.

The CS8416 digital audio receiver IC provides the sys-

tem timing necessary to operate the Digital-to-Analog

converter and will accept S/PDIF and EIAJ-340-com-

patible audio data. The evaluation board may also be

configured to accept external timing and data signals for

operation in a user application during system

development.

ORDERING INFORMATION

CDB4352 Evaluation Board

Analog Output

(Line Level)

CS4352

S/PDIF Input

(CS8416)

Clocks/Data

Header

Reset

Hardware Switches

Mux

Muting

SEPTEMBER '06

DS684DB1

CDB4352

Summary of content (21 pages)

PAGE 1
CDB4352 Evaluation Board for CS4352 Features Description Demonstrates Recommended Layout And Grounding Arrangements CS8416 Receives S/PDIF, & EIAJ-340- Compatible Digital Audio Headers for External PCM Audio Requires Only a Digital Signal Source and Power Supplies for a Complete Digital-toAnalog Converter System The CDB4352 evaluation board is an excellent means for quickly evaluating the CS4352 24-bit, high-performance stereo D/A converter.
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CDB4352 TABLE OF CONTENTS 1. CDB4352 SYSTEM OVERVIEW ............................................................................................................ 4 2. CS4352 DIGITAL-TO-ANALOG CONVERTER ..................................................................................... 4 3. CS8416 DIGITAL AUDIO RECEIVER .................................................................................................... 4 4. INPUT FOR CLOCKS AND DATA .........................................................
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CDB4352 Figure 38. Top Side ................................................................................................................................... 19 Figure 39. Bottom Side ............................................................................................................................. 20 LIST OF TABLES Table 1. System Connections .................................................................................................................... 5 Table 2. CDB4352 Jumper Settings .
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CDB4352 1. CDB4352 SYSTEM OVERVIEW The CDB4352 evaluation board is an excellent means of quickly evaluating the CS4352. The CS8416 digital audio interface receiver provides an easy interface to digital audio signal sources including the majority of digital audio test equipment. The evaluation board also allows the user to supply external PCM clocks and data through a header for system development. The CDB4352 schematic has been partitioned into five schematics, as shown in Figures 32 through 36.
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CDB4352 6. GROUNDING AND POWER SUPPLY DECOUPLING As with any high-performance converter, the CS4352 requires careful attention to power supply and grounding arrangements to optimize performance. Figure 32 details the connections to the CS4352 and Figures 37, 38, and 39 show the component placement and top and bottom layout. The decoupling capacitors are located as close to the CS4352 as possible. Extensive use of ground plane fill in the evaluation board yields large reductions in radiated noise. 7.
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CDB4352 9. PERFORMANCE PLOTS +0 +0 -10 -10 -20 -20 -30 -30 -40 -40 -50 d B r -60 A -50 -60 -70 d B r -80 A -80 -70 -90 -90 -100 -100 -110 -110 -120 -120 -130 -140 20 -130 50 100 200 500 1k 2k 5k 10k -140 20 20k 50 100 200 Hz +0 +0 -10 -20 -20 -30 -30 -40 -40 -60 -70 d B r -80 A -80 -90 -100 -100 -110 -110 -120 -120 -130 -130 -140 50 100 200 500 1k 2k 5k 10k 20k 20k 40k Figure 3.
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CDB4352 +40 +5 +35 +4 +30 +25 +3 +20 +2 +15 +10 +1 d B r +5 A -5 d B r +0 A -10 -15 +0 -1 -2 -20 -3 -25 -30 -4 -35 -40 -140 -120 -100 -80 -60 -40 -20 -5 20 +0 50 100 200 dBFS 500 1k 2k 5k 10k 20k Hz Figure 7. 48 kHz, Fade-to-Noise Linearity Figure 8. 48 kHz, Frequency Response +0 3 -10 2.5 -20 2 -30 1.5 -40 1 -50 500m -60 d B V -70 -80 0 -500m -90 -1 -100 -1.5 -110 -2 -120 -2.
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CDB4352 +0 +0 -10 -10 -20 -20 -30 -30 -40 -40 -50 -50 -60 -70 d B r -80 A -80 d B r -60 A -70 -90 -90 -100 -100 -110 -110 -120 -120 -130 -130 -140 20 -140 50 100 200 500 1k 2k 5k 10k 20k 20k 40k 60k Figure 13. FFT (96 kHz, No Input) 100k 120k Figure 14.
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CDB4352 +0 3 -10 2.5 -20 2 -30 1.5 -40 1 -50 500m -60 d B V -70 -80 0 -500m -90 -1 -100 -1.5 -110 -2 -120 -2.5 -130 -140 20 50 100 200 500 1k 2k 5k 10k -3 0 20k 250u 500u Figure 19. 96 kHz, Crosstalk +0 +0 -10 -20 -20 -30 -30 -40 -40 -60 -70 d B r -80 A -80 A -90 -100 -100 -110 -110 -120 -120 -130 -130 -140 20 50 100 200 500 1k 2k 5k 10k -140 20 20k 50 100 200 Figure 21. FFT (192 kHz, 0 dB) 1k 2k 5k 10k 20k Figure 22.
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CDB4352 +0 +0 -10 -10 -20 -20 -30 -30 -40 -40 d B r d B r -50 -50 -60 -60 A A -70 -70 -80 -80 -90 -90 -100 -100 -110 20 50 100 200 500 1k 2k 5k 10k -110 -120 20k -100 -80 -60 -40 -20 +0 dBFS Hz Figure 25. 192 kHz, THD+N vs. Input Freq Figure 26. 192 kHz, THD+N vs.
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CDB4352 JUMPER / SWITCH PURPOSE POSITION FUNCTION SELECTED J7 Selects source of voltage for the +5V supplies +5 V *+5V_REG Voltage source is +5 V test point (TP8) Voltage source is +5 V regulator J4 Selects source of voltage for the VD supplies VD *+3.3V REG Voltage source is VD test point (TP2) Voltage source is +3.3 V regulator J5 Selects source of voltage for the VL supply VL *+3.3V REG Voltage source is VL binding post Voltage source is +3.
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11.SCHEMATICS Hardware Switch Figure 34 Power Figure 36 Reset Circuit 8416 Digital Audio Receiver Figure 35 MCLK SCLK LRCK SDIN CS4352 Figure 32 Channel A Outputs and Mute Figure 33 Channel B Outputs and Mute Figure 33 PCM Inputs Figure 34 Figure 31.
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DS684DB1 Figure 32.
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CDB4352 DS684DB1 Figure 33.
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DS684DB1 15 CDB4352 Figure 34.
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CDB4352 DS684DB1 Figure 35.
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DS684DB1 17 CDB4352 Figure 36.
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DS684DB1 18 CDB4352 Figure 37.
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CDB4352 DS684DB1 Figure 38.
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CDB4352 DS684DB1 Figure 39.
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CDB4352 12.REVISION HISTORY Release DB1 DB2 Changes Initial Release Added Performance Plots Contacting Cirrus Logic Support For all product questions and inquiries, contact a Cirrus Logic Sales Representative. To find the one nearest you, go to www.cirrus.com. IMPORTANT NOTICE Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable.