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CDB35L00-X4
2.7 W x 4 CS35L00 Amplifier Demonstration Board
Features
? Contains 4 CS35L00 Hybrid Class-D Amplifiers
? Selectable +6 dB or +12 dB Gain
? Selectable Operational Modes
? Device Shutdown Control
? Delivers 2.7 W/Ch into 4 ? at 10 % THD+N
? Delivers 1.6 W/Ch into 8 ? at 10 % THD+N
? Differential Mono Analog Inputs for each
CS35L00 Amplifier
? Demonstrates Recommended 4-Layer Layout
and Grounding Arrangements
– Optional Output Filter Connections
– Optional Gain Adjustment Resistors
? Powered by Single +2.5-5.5 V Power Supply
Control Switch
(S1)
Description
The CDB35L00-X4 demonstrates the CS35L00 high-ef-
ficiency Hybrid Class-D audio amplifier. This
demonstration board implements a four-channel, quad
amplifier system that delivers 2.7 W per full-bridge
channel into 4- ? loads using a single +5 V supply.
Differential audio inputs can easily be connected
through the J10, J20, J30, and J40 headers. If desired,
the gain can be adjusted through the optional input
resistors.
Component landings are available for an optional EMI
output filter.
The CDB35L00-X4 can be configured to evaluate the
four operational modes and two gain settings of the
CS35L00 amplifier. Mode, Gain, and Shutdown control
is available through the S1 switch. Hybrid control is
available through the R13, R23, R33, and R43 resistors.
ORDERING INFORMATION
CDB35L00 CS35L00-X4 Demo Board
VBATT
Power (J1)
Analog
Input
(J10)
Analog
Input
(J20)
Analog
Input
(J30)
Analog
Input
(J40)
Optional
Gain
Adjustment
Optional
Gain
Adjustment
Optional
Gain
Adjustment
Optional
Gain
Adjustment
CS35L00
(U1)
CS35L00
(U2)
CS35L00
(U3)
CS35L00
(U4)
Optional
Output
Filter
Optional
Output
Filter
Optional
Output
Filter
Optional
Output
Filter
Speaker
Output
(J11)
Speaker
Output
(J21)
Speaker
Output
(J31)
Speaker
Output
(J41)
4 or 8 ?
4 or 8 ?
4 or 8 ?
4 or 8 ?
http://www.cirrus.com
Copyright ? Cirrus Logic, Inc. 2010
(All Rights Reserved)
APR '10
DS913DB2
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