CRD44130-FB Datasheet, PDF (1/39 Pages) Cirrus Logic – 20 W x 2 + 40 W x 1 PWM Amplifier Reference Design

CRD44130-FB
20 W x 2 + 40 W x 1 PWM Amplifier Reference Design
Features
 Two Full-Bridge Channels, 20 W each
(@ 10% THD+N)
 One Parallel Full-Bridge Channel, 40 W
(@ 10% THD+N)
 < 0.3% THD+N at 12 W
 Thermally Enhanced QFN Package Requires
No Heat Sink
 Accepts Analog Audio or S/PDIF Digital Audio
Inputs
 Onboard FPGA Converts Stereo Inputs to
Properly Filtered 2.1 Outputs
 CS44600 Spread Spectrum Modulation
Reduces EMI Emissions
 Thermal, Over-Current, and Under-Voltage
Protection
 > 85% Amplifier Efficiency
 Can be operated as a Stand-Alone Board
through On-Board Controls or with Windows^®
Compatible Graphical User Interface
 Demonstrates Recommended Layout and
Grounding Arrangements
120 W Switch Mode Power Supply
(SMPS)
+5.0 V
+18 V
+18 V
Channel 1 (L)
Channel 2 (R)
CS44130
(Power
Stage)
LPF
LPF
8Ω
8Ω
Audio
Inputs and
Control
Logic
PCM Clocks
& Data
FPGA for
Stereo to
2.1
Conversion
PCM Clocks
& Data
CS44600
(PWM
Controller)
I²C Host Control
+18 V
Channel 3 (LFE)
CS44130
(Power
Stage)
LPF
4Ω
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2006
(All Rights Reserved)
AUGUST '06
DS690RD2