CS4525-CNZ Cirrus Logic Inc, CS4525-CNZ Datasheet - Page 7

• Manufacturer Part Number: CS4525-CNZ
• Description: IC AMP AUDIO PWR 30W QUAD 48QFN
• Manufacturer: Cirrus Logic Inc
• Series: Popguard®r
• Type: Class Dr

Specifications of CS4525-CNZ

• Output Type: 2-Channel (Stereo) or 4-Channel (Quad)
• Package / Case: 48-QFN
• Max Output Power X Channels @ Load: 30W x 1 @ 4 Ohm; 15W x 2 @ 8 Ohm
• Voltage - Supply: 8 V ~ 18 V
• Features: ADC, Depop, I²C, I²S, Mute, PWM, Short-Circuit and Thermal Protection, Volume Control
• Mounting Type: Surface Mount
• Product: Class-D
• Output Power: 30 W
• Thd Plus Noise: 10 %
• Operating Supply Voltage: 2.5 V to 5 V
• Supply Current: 54 mA
• Maximum Power Dissipation: 180 mW
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Audio - Load Impedance: 4 Ohms, 6 Ohms, 8 Ohms
• Audio Load Resistance: 8 Ohms, 4 Ohms
• Minimum Operating Temperature: 0 C
• Supply Voltage (max): 5.25 V
• Supply Voltage (min): 2.375 V
• Amplifier Class: D
• No. Of Channels: 4
• Supply Voltage Range: 8V To 18V
• Load Impedance: 4ohm
• Operating Temperature Range: 0°C To +70°C
• Amplifier Case Style: QFN
• No. Of Pins: 48
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1586 - REFERENCE BOARD FOR CS4525 PWM
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 598-1264

CS4525
Figure 17.Peak Signal Detection & Limiting .............................................................................................. 37
Figure 18.Foldback Process ..................................................................................................................... 40
Figure 19.Popguard Connection Diagram ................................................................................................. 46
Figure 20.2-Channel Full-Bridge PWM Output Delay ............................................................................... 50
Figure 21.3-Channel PWM Output Delay .................................................................................................. 50
Figure 22.Typical SYS_CLK Input Clocking Configuration ....................................................................... 54
Figure 23.Hardware Mode PWM Output Delay ......................................................................................... 55
Figure 24.Hardware Mode Digital Signal Flow .......................................................................................... 56
Figure 25.Foldback Process ..................................................................................................................... 57
Figure 26.Output Filter - Half-Bridge ......................................................................................................... 59
Figure 27.Output Filter - Full-Bridge .......................................................................................................... 60
Figure 28.Recommended Unity Gain Input Filter ...................................................................................... 61
Figure 29.Recommended 2 V
Input Filter ........................................................................................... 61
RMS
Figure 30.I²S Serial Audio Formats ........................................................................................................... 62
Figure 31.Left-Justified Serial Audio Formats ........................................................................................... 62
Figure 32.Right-Justified Serial Audio Formats ......................................................................................... 63
Figure 33.Control Port Timing, I²C Write ................................................................................................... 64
Figure 34.Control Port Timing, I²C Read ................................................................................................... 64
LIST OF TABLES
Table 1. I/O Power Rails ........................................................................................................................... 12
Table 2. Bass Shelving Filter Corner Frequencies .................................................................................... 31
Table 3. Treble Shelving Filter Corner Frequencies ................................................................................. 32
Table 4. Bass Management Cross-Over Frequencies .............................................................................. 35
Table 5. 2-Way Cross-Over Frequencies .................................................................................................. 41
Table 6. Auxiliary Serial Port Data Output ................................................................................................ 43
Table 7. Nominal Switching Frequencies of the Auxiliary Serial Output ................................................... 43
Table 8. PWM Power Output Configurations ............................................................................................ 45
Table 9. Typical Ramp Times for Various VP Voltages ............................................................................ 46
Table 10. PWM Logic-Level Output Configurations .................................................................................. 49
Table 11. PWM Output Switching Rates and Quantization Levels ........................................................... 51
Table 12. Output of PWM_SIG Outputs .................................................................................................... 52
Table 13. SYS_CLOCK Frequency Selection ........................................................................................... 54
Table 14. Input Source Selection .............................................................................................................. 55
Table 15. Serial Audio Interface Format Selection .................................................................................... 55
Table 16. Thermal Foldback Enable Selection ......................................................................................... 57
Table 17. PWM Output Switching Rates and Quantization Levels ........................................................... 58
Table 18. Low-Pass Filter Components - Half-Bridge ............................................................................... 59
Table 19. DC-Blocking Capacitors Values - Half-Bridge ........................................................................... 59
Table 20. Low-Pass Filter Components - Full-Bridge ............................................................................... 60
Table 21. Power Supply Configuration and Settings ................................................................................. 63
DS726PP2
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