EUA6412 Datasheet, PDF (1/18 Pages) Eutech Microelectronics Inc – 2.6-W Stereo Audio Power Amplifier with Four Selectable Gain Settings

EUA6412
2.6-W Stereo Audio Power Amplifier
with Four Selectable Gain Settings
DESCRIPTOIN
The EUA6412 is a stereo audio power amplifier. When
driving 1 W into 8–Ω speakers, the EUA6412 has less than
0.8% THD+N across its specified frequency range. Included
within this device is integrated depop circuitry that virtually
eliminates transients that cause noise in the speakers.
Amplifier gain is internally configured and controlled by way
of two terminals (GAIN0 and GAIN1). BTL gain settings of 6
dB, 10 dB, 15.6 dB, and 21.6 dB are provided, while SE
gain is always configured as 4.1 dB for headphone drive. An
internal input MUX allows two sets of stereo inputs to the
amplifier .The HP/LINE terminal allows the user to select
which MUX input is active, regardless of whether the
amplifier is in SE or BTL mode. In notebook applications,
where internal speakers are driven as BTL and the line outputs
(often headphone drive) are required to be SE, the EUA6412
automatically switches into SE mode when the SE/BTL input
is activated, and this reduces the gain to 4.1 dB.
The EUA6412 consumes only 5.2mA of supply current during
normal operation.
Block Diagram
FEATURES
z 2.6W per Channel Output Power Into 3-Ω Load
z Internal Gain Control, Which Eliminates
External Gain-Setting Components
z Input MUX Select Terminal
z PC-Beep Input
z Depop Circuitry Integrated
z Two Input Modes Allowable with Single-Ended or
Fully Differential Input
z Low Supply Current and Shutdown Current
z Thermal Shutdown Protection
z TSSOP-24 with Thermal Pad
z RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
z Notebook Computers
z Multimedia Monitors
z Digital Radios and Portable TVs
DS6412 Ver 1.0 Dec. 2006
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