ATA-120
This is preliminary information on a new product. Specifications are subject to change without notice.
129 Morgan Drive, Norwood, MA 02062 voice: (781) 551-9450 fax: (781) 440-9528 email: apogee@apogeeddx.com
CONTROLLED DOCUMENT: P_903-000009_Rev14 ATA-120 Data Sheet.doc DRN: PRELIMINARY Page 1 of 13
20W Class D Single Channel Audio Amplifier

FEATURES
• HIGH OUTPUT POWER CAPABILITY
• SINGLE SUPPLY (+7.5V to +24V)
• THD+N < 0.05% @ 1W, 8Ω
• HIGH EFFICIENCY, > 90% @ 4Ω, 20W
• LOW QUIESCENT CURRENT, 13mA
• LOW NOISE (190µV typ.)
• POP ELIMINATION AT STARTUP AND
SHUTDOWN
• BUILT-IN THERMAL PROTECTION
• INTEGRATED SHORT CIRCUIT PROTECTION
• 180mΩ MOSFET SWITCHES
• MUTE / STANDBY MODE
• SMALL SMD PACKAGE IS
BOTH LEAD-FREE (Pb) AND GREEN
APPLICATIONS
• TELEVISIONS
• HOME AUDIO MINI-SYSTEMS
• FLAT PANEL MONITORS
• MULTIMEDIA SPEAKERS
• SURROUND SOUND DVD SYSTEMS


1.0 GENERAL DESCRIPTION
The ATA-120 Class-D Audio Amplifier is a fully
integrated monolithic audio amplifier that can
provide audio power up to 20 watts @ 10% THD into
a 4Ω speaker.
The ATA-120 incorporates a single ended output
structure with built-in short circuit and
overtemperature protection. This low noise, high
performance device delivers the excellent audio
quality of a class A/B amplifier while still achieving
class-D efficiency greater than 90%.
ORDERING INFORMATION:
Part Number * Package Temperature
ATA-120 SOIC8 -40°C to + 85°C
EB-120 Evaluation Board for the ATA-120


Figure 1 - Block Diagram

ENABLE
IN_N
IN_P
AGND
FET
DRIVE
FET
DRIVE
PGND
POUT
VDD
BOOST
+
-
REGULATOR,
CONTROL &
PROTECTION