CS3511_0912 Datasheet, PDF (1/26 Pages) Cirrus Logic – Stereo 10 W High-efficiency Class-D Audio Power Amplifier

CS3511
Stereo 10 W High-efficiency Class-D Audio Power Amplifier
Features
 Closed-loop Advanced ΔΣ Architecture
 True Spread Spectrum Modulation
 Premium Quality Audio Amplification
– 99 dB Dynamic Range - System Level
– 0.025% THD+N @ 5 W - System Level
– -104 dB Channel Separation
 Four Selectable Amplifier Gain Settings
 Integrated Protection and Automatic Recovery
for Over-current, Under-voltage, and Thermal
Overload
 Single-supply Operation (Typ. = 9-12 V)
 No Bootstrap Capacitors Required
 Low-power Standby Mode
 Supports Differential or Single-ended Inputs
 Thermally Enhanced 32-pin, 6 x 6 mm QFN
Package Requires No External Heat Sink
Common Applications
 Active Speakers
 Portable Media Player Docking Stations
 Mini/Micro Shelf Systems
 Digital Televisions
General Description
The CS3511 is a high-efficiency class-D PWM amplifier
that integrates on-chip over-current, under-voltage,
over-temperature protection, and error reporting. An on-
board regulator generates a 5 VDC supply used
to power the internal low-voltage analog and digital cir-
cuitry. The low R_DS(ON) outputs can source peak cur-
rents up to 2.7 A, deliver high efficiency, allow a small
device package, and lower power supply voltage levels.
The CS3511 is available in a 32-pin QFN package in
Commercial grade (-10°C to +70°C). The CRD3511
customer reference design is also available. Please re-
fer to “Ordering Information” on page 25 for complete
ordering information.
Positive Input
Channel 1
Negative Input
MUTE
SLEEP
STATUS
GAIN0
GAIN1
Positive Input
Channel 2
Negative Input
Analog Power
Digital Power
5V
Regulator
Processing
and
Modulation
Gate
Drive
12 V
VP
Channel 1
Positive Output
Negative Output
Gain
Control
Charge Pump
Processing
and
Modulation
Gate
Drive
Channel 2
Positive Output
Negative Output
PGND
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Copyright  Cirrus Logic, Inc. 2009
(All Rights Reserved)
DEC ‘09
DS845F1