CRD4525 Datasheet | Cirrus Logic

Features  Output Filters Optimized for 8 Ω Loads  Delivers 15 W/Ch into 8 Ω at 10 % THD+N  Single-Ended 2 VRMS Stereo Analog Inputs  Optical and Coaxial S/PDIF Inputs  Flexible I/O Headers Provided Description The CRD4525 demonstrates the CS4525 digital PWM controller with integrated power stages. This reference design implements a two-channel amplifier which delivers 15 W per full-bridge channel into 8 Ω loads using a single +18 V supply. The CRD4525 is powered by an included 80 W switching mode power supply. Standard RCA phono jacks are provided to easily interface analog input signals with the evaluation board. Optical and coaxial inputs are provided to interface with S/PDIF digital audio input signals. The PWM audio power outputs are routed through an inductor/capacitor 2nd order low-pass filter (LPF) to remove high frequency ponents from the output signal, effectively converting it from digital to analog. The Windows software provides a GUI to make configuration of the CRD4525 easy. The software municates through the PC’s USB port to configure the control port registers so that all features of the CS4525 can be evaluated. - - - - PCM Input Signal Interface Auxiliary Serial Port Signal Interface Delay Port Signal Interface PWM Logic Level Signal Interface  Optional CRD4412 Daughter-Card for Subwoofer Channel - Implements a 2.1 Configuration  Demonstrates Remended Layout and Grounding Arrangements  +18 V Switching Mode Power Supply Included  Windows® patible Software Interface - - Easy and Intuitive Graphical Interface Supports USB PC Connectivity ORDERING INFORMATION CRD4525 CS4525 Reference Design Stereo Analog Inputs Output Filter Speaker Connector 8Ω Optical Receiver CS8416 S/PIDF Receiver Coaxial Input PCM Input Header CS4525 Output Filter 8Ω Aux Port Header CRD4412 Interface Header USB I/O Status LED’s Micro-controller Tactile Controls Power Jack Included 18 V Power Supply http://.cirrus. Copyright © Cirrus Logic, Inc. 2006...