EUA2036 Datasheet, PDF (1/1 Pages) Eutech Microelectronics Inc – Low EMI, 2.8-W Mono Filterless Class-D Audio Power Amplifier with Auto-Recovery

EUA2036
Low EMI, 2.8-W Mono Filterless Class-D
Audio Power Amplifier with Auto-Recovery
DESCRIPTION
The EUA2036 is a high efficiency, 2.8W mono class-D
audio power amplifier. A low noise, filterless PWM
architecture eliminates the output filter, reducing external
component count, system cost, and simplifying design.
Operating in a single 5V supply, EUA2036 is capable of
driving 4Ω speaker load at a continuous average output of
2.8W/10% THD+N or 2.2W/1% THD+N. The EUA2036
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 EUA2036. The
gain of EUA2036 is externally configurable which allows
independent gain control from multiple sources by
summing signals from separate sources.
The EUA2036 is available in space-saving WCSP and
TDFN packages.
FEATURES
z Unique Modulation Scheme Reduces EMI Emissions
z Short Circuit Auto-Recovery
z Efficiency at 3.6V With an 8-Ω Speaker:
− 84% at 400 mW
z Low Quiescent Current and
Shutdown Current
z 2.5V to 5.5V Wide Supply Voltage
z Shutdown Pin Compatible with 1.8V Logic GPIO
z Optimized PWM Output Stage Eliminates
LC Output Filter
z Improved PSRR (−68 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)
and 3mm × 3mm TDFN-8 package
z RoHS compliant and 100% lead(Pb)-free
Halogen-Free
Typical Application Circuit
APPLICATIONS
z Ideal for Wireless or cellular Handsets and PDAs
DS2036 Ver 1.1 Dec. 2009
Figure1.
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