CS4525 Datasheet, PDF (1/91 Pages) Cirrus Logic – 30 W Digital TV Amplifier with Integrated ADC

CS4525
30 W Digital TV Amplifier with Integrated ADC
Digital Amplifier Features
! Fully Integrated Power MOSFETs
! No Heatsink Required
– Programmable Power Foldback on
Thermal Warning
– High Efficiency (85%)
! > 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)
! -88 dB THD+N
! 2 Vrms Input Supports SCART
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
10.5 V to 18 V
VP
Amplifier
Out 1
Gate
Drive
Amplifier
Out 2
Gate
Drive
Gate
Drive
Amplifier
Out 3
Amplifier
Out 4
PGND
PWM Modulator
Output 1
PWM Modulator
Output 2
Advance 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. 2006
(All Rights Reserved)
AUGUST '06
DS726A1