CRD44130-FB

www.DataSheet4U.com CRD44130-FB 20 W x 2 + 40 W x 1 PWM Amplifier Reference Design Features  Two Full-Bridge Channels, 20 W each  CS44600 Spread Spectrum Modulation (@ 10% THD+N)  One Parallel Full-Bridge Channel, 40 W Reduces EMI Emissions  Thermal, Over-Current, and Under-Voltage (@ 10% THD+N)  < 0.3% THD+N at 12 W  Thermally Enhanced QFN Package Requires Protection  > 85% Amplifier Efficiency  Can be operated as a Stand-Alone Board No Heat Sink  Accepts Analog Audio or S/PDIF Digital Audio Inputs  Onboard FPGA Converts Stereo Inputs to through On-Board Controls or with Windows® Compatible Graphical User Interface Grounding Arrangements  Demonstrates Recommended Layout and Properly Filtered 2.1 Outputs 120 W Switch Mode Power Supply (SMPS) +5.0 V +18 V +18 V Channel 1 (L) Channel 2 (R) CS44130 (Power Stage) LPF 8Ω 8Ω LPF Audio Inputs and Control Logic PCM Clocks & Data FPGA for Stereo to 2.1 Conversion I C Host Control 2 PCM Clocks & Data CS44600 (PWM Controller) Channel 3 (LFE) +18 V CS44130 (Power Stage) LPF 4Ω http://www.cirrus.com Copyright © Cirrus Logic, Inc. 2006 (All Rights Reserved) AUGUST '06 DS690RD2 CRD44130-FB General Description The CRD44130-FB PWM amplifier demonstrates the CS44600 and CS44130 Cirrus Logic’s multi-channel all-digital PWM controller and power stage. This reference design implements a multi-channel amplifier that delivers 20 W per channel into 8 Ω loads and 40 W into a 4 Ω load using a single +18 V supply...