EUA2032 Datasheet, PDF (1/1 Pages) Eutech Microelectronics Inc – Low EMI, Ultra-Low Distortion, 2.5-W Mono Filterless Class-D Audio Power Amplifier

EUA2032
Low EMI, Ultra-Low Distortion, 2.5-W Mono
Filterless Class-D Audio Power Amplifier
DESCRIPTION
The EUA2032 is a high efficiency, 2.5W mono class-D
audio power amplifier. A new developed filterless PWM
modulation architecture further reduces EMI and THD+N,
as well as eliminates the LC output filter, reducing external
component count, system cost, and simplifying design.
Operating in a single 5V supply, EUA2032 is capable of
driving 4Ω speaker load at a continuous average output of
2.5W/10% THD+N or 2W/1% THD+N. The EUA2032 has
high efficiency with speaker load compared to a typical
class AB amplifier. With a 3.6V supply driving an 8Ω
speaker , the efficiency for a 400mW power level is 84%.
In cellular handsets, the earpiece, speaker phone, and
melody ringer can each be driven by the EUA2032. The
gain of EUA2032 is externally configurable which allows
independent gain control from multiple sources by
summing signals from separate sources.
The EUA2032 is available in space-saving WCSP and
TDFN packages.
FEATURES
z Unique Modulation Scheme Reduces EMI Emissions
z Efficiency at 3.6V With an 8-Ω Speaker:
− 84% at 400 mW
z Low 2.4-mA Quiescent Current and
0.5-µA Shutdown Current
z 2.5V to 5.5V Wide Supply Voltage
z Ultra-Low Distortion - 0.07% THD+N at 1W and
8-Ω Load
z Shutdown Pin Compatible with 1.8V Logic GPIO
z Improved PSRR (−72 dB) Eliminates Need for a
Voltage Regulator
z Fully Differential Design Reduces RF Rectification
and Eliminates Bypass Capacitor
z Improved CMRR Eliminates Two Input
Coupling Capacitors
z Internally Generated 250-kHz Switching
Frequency
z Integrated Pop and Click Suppression Circuitry
z 1.5mm × 1.5mm Wafer Chip Scale Package (WCSP)
3mm × 3mm TDFN-8 Package
z RoHS compliant and 100% lead(Pb)-free
Typical Application Circuit
APPLICATIONS
z Ideal for Wireless or cellular Handsets and PDAs
DS2032 Ver 1.0 July 2009
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