CS4412A_08 Datasheet, PDF (1/24 Pages) Cirrus Logic – 30 W Quad Half-Bridge Digital Amplifier Power Stage

CS4412A
30 W Quad Half-Bridge Digital Amplifier Power Stage
Features
 Configurable Outputs (10% THD+N)
– 2 x 15 W into 8 Ω, Full-Bridge
– 1 x 30 W into 4 Ω, Parallel Full-Bridge
– 4 x 7.5 W into 4 Ω, Half-Bridge
– 2 x 7.5 W into 4 Ω, Half-Bridge + 1 x 15 W
into 8 Ω, Full-Bridge
 Space-Efficient Thermally-Enhanced QFN
– No External Heat Sink Required
 > 100 dB Dynamic Range - System Level
 < 0.1% THD+N @ 1 W - System Level
 Built-In Protection with Error Reporting
– Over-Current
– Thermal Warning and Overload
– Under-Voltage
 +8 V to +18 V High Voltage Supply
 PWM Popguard^® Technology for Quiet Startup
 No Bootstrap Required
 Low Quiescent Current
 Low Power Standby Mode
Common Applications
 Integrated Digital Televisions
 Portable Media Player Docking Stations
 Mini/Micro Shelf Systems
 Powered Desktop Speakers
General Description
The CS4412A is a high-efficiency power stage for digital
Class-D amplifiers designed to input PWM signals from
a modulator such as the CS4525. The power stage out-
puts can be configured as four half-bridge channels, two
half-bridge channels and one full-bridge channel, two
full-bridge channels, or one parallel full-bridge channel.
The CS4412A integrates on-chip over-current, under-
voltage, over-temperature protection, and error report-
ing as well as a thermal warning indicator. The low
R_DS(ON) outputs can source up to 2.5 A peak current,
delivering high efficiency which allows small device
package and lower power supplies.
The CS4412A is available in a 48-pin QFN package in
Commercial grade (-10°C to +70°C). The CRD4412A
customer reference design is also available. Please re-
fer to “Ordering Information” on page 23 for complete
ordering information.
In 1
In 2
In 3
In 4
Reset
Hardware
Configuration
Current &
Thermal Data
2.5 V to 5 V
Mode
Configuration
Control Logic
Protection &
Error Reporting
Non-Overlap
Time Insertion
Non-Overlap
Time Insertion
Non-Overlap
Time Insertion
Non-Overlap
Time Insertion
Gate
Drive
Gate
Drive
Gate
Drive
Gate
Drive
8 V to 18 V
VP
Amplifier
Out 1
Amplifier
Out 2
Amplifier
Out 3
Amplifier
Out 4
PGND
Advance Product Information
http://www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright © Cirrus Logic, Inc. 2008
(All Rights Reserved)
JUN '08
DS786A2