20-W Stereo Class-D
Audio Power Amplifier
DESCRIPTION
The EUA2123 is a high efficient Class-D audio power
amplifier for delivering up to 2
×
20W into a 4Ω stereo
mode with a single-ended (SE) configuration or 1
×
40W
into an 8Ω mono mode with a bridge-tied-load (BTL)
configuration. The high efficiency of the EUA2123
eliminates the need for an external heat sink when playing
music.
The gain of the amplifier is controlled by two gain select
pins. The gain selections are 20, 26, 32, 36 dB. Short
circuit and thermal-overload protection prevent the device
from being damaged during a fault condition.
EUA2123
FEATURES
2
×
20W, THD=10% at 4Ω Load from a 24V Supply
2
×
10W, THD=10% at 8Ω Load from a 24V Supply
1
×
40W, THD=10% at 8Ω Load from a 24V Supply
Operates from 10V to 30V
Unique Modulation Scheme
High Efficiency up to 90%
Four Selectable Gain Settings
Internal Oscillator
Single-Ended Analog Inputs
Mute and Shutdown Control
Integrated On/Off /Mute Pop Suppression
Thermal Protection with Auto Recovery
Short-Circuit Latch-off Protection
Space-Saving Surface-Mount 24-pin TSSOP Package
RoHS compliant and 100% lead(Pb)-free
APPLICATIONS
Televisions
Typical Application Circuit
Figure1.
DS2123
Ver 1.0
Feb. 2009
1
EUTECH [ EUTECH MICROELECTRONICS INC ]
