DUAL 2.1W AUDIO AMPLIFIER PLUS STEREO HEADPHONE FUNCTION
DESCRIPTION
The UTC PA4867 is a stereo audio power amplifier capable of
delivering typically 2.1W to a 4Ω load or 2.4W to a 3Ω load each
channel with less than 1.0% THD+N using a 5V power supply. UTC
PA4867 has a new circuit topolopy which can eliminate headphone
output coupling capacitors. And an internal input MUX allows two
sets of stereo inputs to the amplifier.
The UTC PA4867 has integrated depop circuitry that virtually
eliminates transients that cause noise in the speakers during power
up and when using the shutdown modes.
FEATURES
* Operating voltage range VDD=2V~5.5V
* Output power:
-2.4W(typ.)@5V into 3Ω with 1% THD+N max (1kHz)
-2.1W(typ.)@5V into 4Ω with 1% THD+N max (1kHz)
* Eliminates SE-mode output coupling capacitors
* Shutdown mode available
* click and pop reduction circuitry
* Unity-gain stable
* Thermal-shutdown Protection
* Input MUX control
* SE/BTL mode available |
