cs4412a Cirrus Logic, Inc., cs4412a Datasheet - Page 2

• Manufacturer Part Number: cs4412a
• Description: 30w Quad Half-bridge Digital Amplifier Power Stage
• Manufacturer: Cirrus Logic, Inc.

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TABLE OF CONTENTS
LIST OF FIGURES
LIST OF TABLES
1. PIN DESCRIPTION ................................................................................................................................. 3
2. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 5
3. TYPICAL CONNECTION DIAGRAMS ................................................................................................. 9
4. APPLICATIONS ................................................................................................................................... 13
5. POWER SUPPLY, GROUNDING, AND PCB LAYOUT ....................................................................... 20
6. PARAMETER DEFINITIONS ................................................................................................................ 21
7. PACKAGE DIMENSIONS .................................................................................................................... 22
8. THERMAL CHARACTERISTICS ......................................................................................................... 23
9. ORDERING INFORMATION ................................................................................................................ 23
10. REVISION HISTORY .......................................................................................................................... 23
Figure 1.Stereo Full-Bridge Typical Connection Diagram ........................................................................... 9
Figure 2.2.1 Channel Typical Connection Diagram .................................................................................. 10
Figure 3.4 Channel Half-Bridge Typical Connection Diagram .................................................................. 11
Figure 4.Parallel Full-Bridge Typical Connection Diagram ....................................................................... 12
Figure 5.Output Filter - Half-Bridge ........................................................................................................... 16
Figure 6.Output Filter - Full-Bridge ............................................................................................................ 18
Table 1. I/O Power Rails .............................................................................................................................. 8
Table 2. Typical Ramp Times for Typical VP Voltages .............................................................................. 13
Table 3. Output Mode Configuration Options............................................................................................. 15
Table 4. Low-Pass Filter Components - Half-Bridge.................................................................................. 16
Table 5. DC-Blocking Capacitors Values - Half-Bridge.............................................................................. 17
Table 6. Low-Pass Filter Components - Full-Bridge .................................................................................. 18
Table 7. Over-Current Error Conditions ..................................................................................................... 19
Table 8. Thermal and Under-Voltage Error Conditions.............................................................................. 19
Table 9. Power Supply Configuration and Settings.................................................................................... 20
RECOMMENDED OPERATING CONDITIONS .................................................................................... 5
ABSOLUTE MAXIMUM RATINGS ........................................................................................................ 5
PWM POWER OUTPUT CHARACTERISTICS ..................................................................................... 6
DC ELECTRICAL CHARACTERISTICS ................................................................................................ 7
DIGITAL INTERFACE SPECIFICATIONS ............................................................................................. 7
DIGITAL I/O PIN CHARACTERISTICS ................................................................................................. 8
4.1 Overview ........................................................................................................................................ 13
4.2 Reset and Power-Up ...................................................................................................................... 13
4.3 Output Mode Configuration ............................................................................................................ 15
4.4 Output Filters ................................................................................................................................. 16
4.5 Device Protection and Error Reporting .......................................................................................... 19
5.1 Power Supply and Grounding ........................................................................................................ 20
5.2 QFN Thermal Pad .......................................................................................................................... 20
8.1 Thermal Flag .................................................................................................................................. 23
4.2.1 PWM Popguard Transient Control ........................................................................................ 13
4.2.2 Initial Pulse Edge Delay ........................................................................................................ 14
4.2.3 Recommended Power-Up Sequence .................................................................................... 14
4.2.4 Recommended Power-Down Sequence ............................................................................... 14
4.4.1 Half-Bridge Output Filter ........................................................................................................ 16
4.4.2 Full-Bridge Output Filter (Stereo or Parallel) ......................................................................... 18
4.5.1 Over-Current Protection ........................................................................................................ 19
4.5.2 Thermal Warning, Thermal Error, and Under-Voltage Error ................................................. 19
5.1.1 Integrated VD Regulator ........................................................................................................ 20
CS4412A
DS786A2