Cirrus Logic CRD35L01 User Manual
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DS914RD2
CRD35L01
TABLE OF CONTENTS
1. SYSTEM OVERVIEW ............................................................................................................................. 4
1.1 CS35L01 Hybrid Class-D Amplifier .................................................................................................. 4
1.2 Power Supply ................................................................................................................................... 4
1.3 Operational Modes ........................................................................................................................... 4
1.4 Shutdown Control ............................................................................................................................ 4
1.5 Amplifier Gain .................................................................................................................................. 4
1.5.1 Optional Input Gain Adjustment Resistors .............................................................................. 4
1.6 Differential Analog Inputs ................................................................................................................. 5
1.7 Speaker Outputs .............................................................................................................................. 5
1.7.1 Optional Speaker Output EMI Filter Components ................................................................... 5
2. GROUNDING AND POWER SUPPLY DECOUPLING .......................................................................... 6
2.1 Power Supply Decoupling ................................................................................................................ 6
2.2 Electromagnetic Interference (EMI) ................................................................................................. 6
2.2.1 Suppression of EMI at the Source ........................................................................................... 6
3. SYSTEM CONNECTORS AND JUMPERS ............................................................................................ 7
4. CRD SCHEMATIC .................................................................................................................................. 8
4.1 Bill of Materials ................................................................................................................................. 9
5. CRD LAYOUT ....................................................................................................................................... 10
6. REVISION HISTORY ............................................................................................................................ 14
LIST OF FIGURES
Figure 1.Optional Bypass Trace Cut Locations ........................................................................................... 5
Figure 2.CRD35L01-SD Schematic ............................................................................................................ 8
Figure 3.CRD35L01-FSD Schematic .......................................................................................................... 8
Figure 4.CRD35L01-HD Schematic ............................................................................................................ 8
Figure 5.CRD35L01-FHD Schematic .......................................................................................................... 8
Figure 6.CRD35L01-SD Top Side Component Placement ....................................................................... 10
Figure 7.CRD35L01-SD Bottom Side Component Placement .................................................................. 10
Figure 8.CRD35L01-SD Layer 1 Copper .................................................................................................. 10
Figure 9.CRD35L01-SD Layer 2 Copper .................................................................................................. 10
Figure 10.CRD35L01-SD Layer 3 Copper ................................................................................................ 10
Figure 11.CRD35L01-SD Layer 4 Copper ................................................................................................ 10
Figure 12.CRD35L01-FSD Top Side Component Placement ................................................................... 11
Figure 13.CRD35L01-FSD Bottom Side Component Placement .............................................................. 11
Figure 14.CRD35L01-FSD Layer 1 Copper .............................................................................................. 11
Figure 15.CRD35L01-FSD Layer 2 Copper .............................................................................................. 11
Figure 16.CRD35L01-FSD Layer 3 Copper .............................................................................................. 11
Figure 17.CRD35L01-FSD Layer 4 Copper .............................................................................................. 11
Figure 18.CRD35L01-HD Top Side Component Placement ..................................................................... 12
Figure 19.CRD35L01-HD Bottom Side Component Placement ................................................................ 12
Figure 20.CRD35L01-HD Layer 1 Copper ................................................................................................ 12
Figure 21.CRD35L01-HD Layer 2 Copper ................................................................................................ 12
Figure 22.CRD35L01-HD Layer 3 Copper ................................................................................................ 12
Figure 23.CRD35L01-HD Layer 4 Copper ................................................................................................ 12
Figure 24.CRD35L01-FHD Top Side Component Placement ................................................................... 13
Figure 25.CRD35L01-FHD Bottom Side Component Placement ............................................................. 13
Figure 26.CRD35L01-FHD Layer 1 Copper .............................................................................................. 13
Figure 27.CRD35L01-FHD Layer 2 Copper .............................................................................................. 13
Figure 28.CRD35L01-FHD Layer 3 Copper .............................................................................................. 13
Figure 29.CRD35L01-FHD Layer 4 Copper .............................................................................................. 13