CRD35L01
1 x 1.7 W CS35L01 Amplifier Reference Design Kit
Features
Four boards provided in the CS35L01 Amplifier
Description
The CRD35L01 demonstrates the CS35L01 high-effi-
ciency Hybrid Class-D audio amplifier. This reference
design implements a single-channel amplifier that deliv-
ers 1.7 W per full-bridge channel into 8- loads using a
single +5-V supply.
Differential audio inputs can easily be connected
through the J1 header. If desired, the gain can be ad-
justed through the optional input resistors.
The -SD, -FSD, -HD, or -FHD suffix designates the
CS35L01’s operational mode. Each of the four boards
is configured to operate in each of the four correspond-
ing modes of the CS35L01 device.
Device shutdown control is available through the J2
header.
ORDERING INFORMATION
CRD35L01
CS35L01 Reference Design
Reference Design Kit
Separate boards for each mode configuration
–
SD, FSD, HD, and FHD
CS35L01 produces a default +6-dB Gain
Delivers 1.4 W/Ch into 8
at 1% THD+N
Delivers 1.7 W/Ch into 8
at 10% THD+N
Differential mono analog inputs
Demonstrates recommended 4-layer layout
and grounding arrangements
– Optional output filter connections
– Optional gain adjustment resistors
Powered by a single 2.5- to 5.5-V power supply
Device shutdown control
Analog
Input (J1)
Shutdown
Control (J2)
Optional
Gain
Adjustment
CS35L01
(SD Mode)
Optional
Output
Filter
Speaker
Output (J3)
VBATT
Power (J4)
Analog
Input (J1)
Shutdown
Control (J2)
Optional
Gain
Adjustment
CS35L01
(FSD Mode)
Optional
Output
Filter
Speaker
Output (J3)
VBATT
Power (J4)
Analog
Input (J1)
Shutdown
Control (J2)
Optional
Gain
Adjustment
CS35L01
(HD Mode)
Optional
Output
Filter
Speaker
Output (J3)
VBATT
Power (J4)
Analog
Input (J1)
Shutdown
Control (J2)
Optional
Gain
Adjustment
CS35L01
(FHD Mode)
Optional
Output
Filter
Speaker
Output (J3)
VBATT
Power (J4)
Copyright
Cirrus Logic, Inc. 2010
(All Rights Reserved)
APR '10
DS914RD2
CIRRUS [ CIRRUS LOGIC ]
