CS4525_08 Datasheet, PDF (1/98 Pages) Cirrus Logic – 30 W Digital Audio Amplifier with Integrated ADC

CS4525
30 W Digital Audio Amplifier with Integrated ADC
Digital Amplifier Features
 Fully Integrated Power MOSFETs
 No Heatsink Required
– Programmable Power Foldback on
Thermal Warning
– High Efficiency
 > 100 dB Dynamic Range
 < 0.1% THD+N @ 1 W
 Configurable Outputs (10% THD+N)
– 1 x 30 W into 4 Ω, Parallel Full-Bridge
– 2 x 15 W into 8 Ω, Full-Bridge
– 2 x 7 W into 4 Ω, Half-Bridge + 1 x 15 W
into 8 Ω, Full-Bridge
 Built-In Protection with Error Reporting
– Overcurrent / Undervoltage / Thermal
Overload Shutdown
– Thermal Warning Reporting
 PWM Popguard^® for Half-Bridge Mode
 Click-free Start-up
 Programmable Channel Delay for System
Noise & Radiated Emissions Management
ADC Features
 Stereo, 24-bit, 48 kHz Conversion
 Multi-bit Architecture
 95 dB Dynamic Range (A-wtd)
 -86 dB THD+N
 Supports 2 Vrms Input with Passive
Components
System Features
 Asynchronous 2-channel Digital Serial Port
 32 kHz to 96 kHz Input Sample Rates
 Operation with On-chip Oscillator Driver or
Applied SYS_CLK at 18.432, 24.576 or
27.000 MHz
 Integrated Sample Rate Converter (SRC)
– Eliminates Clock-jitter Effects
– Input Sample Rate Independent Operation
– Simplifies System Integration
 Spread Spectrum PWM Modulation
– Reduces EMI Radiated Energy
 Low Quiescent Current
(Features continued on page 2)
System Clock
Crystal Driver
I/O
Stereo
Analog In
Serial Audio
Clocks & Data
Serial Audio
Data I/O
Serial Audio
Clocks & Data
HP Detect/Mute
Reset
Interrupt
I²C or Hardware
Configuration
Crystal Oscillator Driver
Multi-bit ∆Σ ADC
Serial Audio Input Port
Serial Audio
Delay Interface
Auxiliary Serial Port
Register /Hardware
Configuration
2.5 V to 5 V
Audio
Processing
Parametric EQ
High-Pass
Bass/Treble
Adaptive
Loudness
Compensation
2-Ch Mixer
2.1 Bass Mgr
Linkwitz-Riley
Crossover
De-Emphasis
Volume
PWM
Multi-bit ∆Σ
Modulator
with
Integrated
Sample Rate
Converter
Error Protection
Thermal Warning
Thermal Feedback
Over Current
Under Voltage
Gate
Drive
Gate
Drive
Gate
Drive
Gate
Drive
8 V to 18 V
VP
Amplifier
Out 1
Amplifier
Out 2
Amplifier
Out 3
Amplifier
Out 4
PGND
PWM Modulator
Output 1
PWM Modulator
Output 2
Preliminary Product Information
http://www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright © Cirrus Logic, Inc. 2008
(All Rights Reserved)
JUL '08
DS726PP3