CDB35L00-X4 Datasheet, PDF (2/12 Pages) Cirrus Logic – 2.7 W x 4 CS35L00 Amplifier Demonstration Board

CDB35L00-X4
TABLE OF CONTENTS
1. SYSTEM OVERVIEW ............................................................................................................................. 3
1.1 CS35L00 Hybrid Class-D Amplifier .................................................................................................. 3
1.2 Power Supply ................................................................................................................................... 3
1.3 Operational Modes ........................................................................................................................... 3
1.3.1 Operational Mode Control ....................................................................................................... 3
1.4 Shutdown Control ............................................................................................................................ 4
1.4.1 Shutdown Control Resistors .................................................................................................... 5
1.5 Gain Control ..................................................................................................................................... 5
1.5.1 Optional Gain Adjustment Resistors ....................................................................................... 5
1.6 Differential Analog Inputs ................................................................................................................. 6
1.7 Speaker Outputs .............................................................................................................................. 6
1.7.1 Optional Speaker Output EMI Filter Components ................................................................... 6
2. GROUNDING AND POWER SUPPLY DECOUPLING .......................................................................... 7
2.1 Power Supply Decoupling ................................................................................................................ 7
2.2 Electromagnetic Interference (EMI) ................................................................................................. 7
2.2.1 Suppression of EMI at the Source ........................................................................................... 7
3. SYSTEM CONNECTORS AND JUMPERS ............................................................................................ 8
4. CDB SCHEMATIC .................................................................................................................................. 9
4.1 Bill of Materials ............................................................................................................................... 10
5. CDB LAYOUT ....................................................................................................................................... 11
6. REVISION HISTORY ............................................................................................................................ 12
LIST OF FIGURES
Figure 1.Hybrid Control Resistors ............................................................................................................... 4
Figure 2.Shutdown Control Resistors ......................................................................................................... 5
Figure 3.Optional Bypass Trace Cut Locations for U1 ................................................................................ 6
Figure 4.CDB35L00-X4 Schematic ............................................................................................................. 9
Figure 5.CDB35L00-X4 Top Side Component Placement ........................................................................ 11
Figure 6.CDB35L00-X4 Bottom Side Component Placement ................................................................... 11
Figure 7.CDB35L00-X4 Layer 1 Copper ................................................................................................... 11
Figure 8.CDB35L00-X4 Layer 2 Copper ................................................................................................... 11
Figure 9.CDB35L00-X4 Layer 3 Copper ................................................................................................... 11
Figure 10.CDB35L00-X4 Layer 4 Copper ................................................................................................. 11
LIST OF TABLES
Table 1. S1 Switch GAIN & MODE Configurations ..................................................................................... 3
Table 2. Hybrid Control Resistor & S1 Switch MODE Configurations ......................................................... 4
Table 3. S1 Switch Default Shutdown Configurations ................................................................................. 5
Table 4. System Input and Output Connections ......................................................................................... 8
Table 5. S1 Switch Settings ........................................................................................................................ 8
Table 6. Bill of Materials Listing ................................................................................................................ 10
2
DS913DB2