CRD-4412A Cirrus Logic Inc, CRD-4412A Datasheet - Page 2

• Manufacturer Part Number: CRD-4412A
• Description: Audio Modules & Development Tools EvalBd 30W Qd Hlf- Brdg Dig Amp Pwr Stg
• Manufacturer: Cirrus Logic Inc

Specifications of CRD-4412A

• Description/function: Audio Amplifiers
• Operating Supply Voltage: 18 V
• Product: Audio Modules
• For Use With/related Products: CS4412A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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TABLE OF CONTENTS
LIST OF FIGURES
LIST OF TABLES
1. SYSTEM OVERVIEW ............................................................................................................................. 3
2. OPERATING INSTRUCTIONS ............................................................................................................... 5
3. GROUNDING AND POWER SUPPLY DECOUPLING .......................................................................... 6
4. SYSTEM CONNECTIONS AND JUMPERS ........................................................................................... 7
5. CRD SCHEMATICS ................................................................................................................................ 8
6. CRD LAYOUT ...................................................................................................................................... 10
7. PARALLEL FULL-BRIDGE PERFORMANCE PLOTS ....................................................................... 15
8. STEREO FULL-BRIDGE PERFORMANCE PLOTS ............................................................................ 21
9. REVISION HISTORY ............................................................................................................................ 27
Figure 1. Stereo Full-Bridge Speaker Terminal Configuration .................................................................... 4
Figure 2. Mono Parallel Full-Bridge Speaker Terminal Configuration ......................................................... 4
Figure 3. CS4412A - Schematic Page 1 ..................................................................................................... 8
Figure 4. Power Outputs - Schematic Page 2 ............................................................................................. 9
Figure 5. Silkscreen Top ........................................................................................................................... 10
Figure 6. Top-Side Copper Layer .............................................................................................................. 11
Figure 7. Inner Copper Layer 1 ................................................................................................................. 12
Figure 8. Inner Copper Layer 2 ................................................................................................................. 13
Figure 9. Bottom-Side Copper Layer ........................................................................................................ 14
Figure 10. Frequency Response in Parallel Full-Bridge Configuration ..................................................... 15
Figure 11. THD+N vs Power in Parallel Full-Bridge Configuration ........................................................... 16
Figure 12. THD+N vs Frequency in Parallel Full-Bridge Configuration ..................................................... 17
Figure 13. FFT at -60dB Input in Parallel Full-Bridge Configuration ......................................................... 18
Figure 14. FFT at 0dB Input in Parallel Full-Bridge Configuration ............................................................ 19
Figure 15. Inter-Modulation Distortion of 19 kHz + 20 kHz in Parallel Full-Bridge Configuration .............. 20
Figure 16. Frequency Response in Stereo Full-Bridge Configuration ....................................................... 21
Figure 17. THD+N vs Power in Stereo Full-Bridge Configuration ............................................................. 22
Figure 18. THD+N vs Frequency in Stereo Full-Bridge Configuration ...................................................... 23
Figure 19. FFT at -60dB Input in Stereo Full-Bridge Configuration ........................................................... 24
Figure 20. FFT at 0dB Input in Stereo Full-Bridge Configuration .............................................................. 25
Figure 21. Inter-Modulation Distortion of 19 kHz + 20 kHz in Stereo Full-Bridge Configuration ............... 26
Table 1. System Connections ..................................................................................................................... 7
Table 2. System Headers ............................................................................................................................ 7
Table 3. CRD4412 Interface Header Signal Assignments .......................................................................... 7
1.1 Power ............................................................................................................................................... 3
1.2 CS4412A Digital Amplifier Power Stage .......................................................................................... 3
1.3 External Data Headers ..................................................................................................................... 3
1.4 Stereo/Mono Selection ..................................................................................................................... 3
1.5 Speaker Outputs .............................................................................................................................. 4
2.1 Operation with CRD4525 ................................................................................................................. 5
2.2 Stand-Alone Operation .................................................................................................................... 5
3.1 Power Supply Decoupling ................................................................................................................ 6
3.2 Electromagnetic Interference (EMI) ................................................................................................. 6
3.2.1 Suppression of EMI at the Source ........................................................................................... 6
CRD4412A
DS786RD1