CRD4525-Q1 Cirrus Logic Inc, CRD4525-Q1 Datasheet - Page 2

• Manufacturer Part Number: CRD4525-Q1
• Description: REFERENCE BOARD FOR CS4525 PWM
• Manufacturer: Cirrus Logic Inc
• Series: Popguard®r

Specifications of CRD4525-Q1

• Amplifier Type: Class D
• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 15W x 2 @ 8 Ohm
• Voltage - Supply: 12 V ~ 18 V
• Operating Temperature: 0°C ~ 70°C
• Board Type: Fully Populated
• Utilized Ic / Part: CS4525
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 598-1586

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Software Mode System Features
Hardware Mode System Features
Digital Audio Processing
Selectable Serial Audio Interface Formats
Digital Serial Connection to Additional CS4525
or DACs for Subwoofer
Digital Interface to External Lip-sync Delay
PWM Switch Rate Shifting Eliminates AM
Frequency Interference
Digital Volume Control with Soft Ramp
Programmable Peak Detect and Limiter
2-Channel Logic-level PWM Output
Flexible Power Output Configurations
Thermal Foldback for Interruption-free
Power-stage Protection
Operation from On-chip Oscillator Driver or
Applied Systems Clock
Supports I²C
2-Channel Stereo Full Bridge Power Outputs
Analog and Digital Inputs
I²S and Left-justified Serial Input Formats
Thermal Foldback for Interruption-free
Protection of Internal Power Stage
Operation from Applied Systems Clock
External Mute Input
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5 Programmable Parametric EQ Filters
Selectable High-pass Filter
Bass/Treble Tone Control
Adaptive Loudness Compensation
2-channel Mixer
2.1 Bass Management
24 dB/octave Linkwitz-Riley Crossover
Filters
De-emphasis Filter
Left-justified up to 24-bit
I²S up to 24-bit
Right-justified 16-, 18-, 20-, 24-bits
+24 to -103 dB in 0.5 dB steps
Programmable Channel Mapping
Can Drive an External PWM Amplifier,
Headphone Amplifier, or Line-out Amplifier
Integrated Headphone Detection
Supports Internal and External Power
Stages
®
Host Control Interface
Common Applications
General Description
The CS4525 is a stereo analog or digital input PWM
high efficiency Class D amplifier audio system with an
integrated stereo analog-to-digital (A/D) converter. The
stereo power amplifiers can deliver up to 15 W per
channel into 8 Ω speakers from a small space-saving
48-pin QFN package. The PWM amplifier can achieve
greater than 85% efficiency. The package is thermally
enhanced for optimal heat dissipation which eliminates
the need for a heatsink.
The power stage outputs can be configured as two full-
bridge channels for 2 x 15 W operation, two half-bridge
channels
2 x 7 W + 1 x 15 W operation, or one parallel full-bridge
channel for 1 x 30 W operation. The CS4525 integrates
on-chip over-current, under-voltage, and over-tempera-
ture protection and error reporting as well as a thermal
warning indicator and programmable foldback of the
output power to allow cooling.
The main digital serial port on the CS4525 can support
asynchronous operation with the integrated on-chip
sample rate converter (SRC) which eases system inte-
gration. The SRC allows for a fixed PWM switching
frequency regardless of incoming sample rate as well
as optimal clocking for the A/D modulators.
An on-chip oscillator driver eliminates the need for an
external crystal oscillator circuit, reducing overall design
cost and conserving circuit board space. The CS4525
automatically uses the on-chip oscillator driver in the
absence of an applied master clock.
The CS4525 is available in a 48-pin QFN package in
Commercial grade (0° to +70° C). The CRD4525-Q1 4-
layer, 1 oz. copper and CRD4525-D1 2-layer, 1 oz. cop-
per customer reference designs are also available.
Please refer to
complete ordering information.
Integrated Digital TV’s
Flat Panel TV Monitors
Computer/TV Monitors
Mini/Micro Shelf Systems
Digital Powered Speakers
Portable Docking Stations
Computer Desktop Audio
and
“Ordering Information” on page 97
one
full-bridge
channel
CS4525
DS726PP3
for
for