2-W STEREO AUDIO POWER AMPLIFIER WITH MUTE
DESCRIPTION
The UTC PA3202 is a monolithic integrated circuit that stereo
bridged audio power amplifiers capable of producing 2 W into 3Ω
with a 5V supply voltage or 800mW into 3Ω with a 3.3V supply
voltage .The UTC PA3202 simplifies design and frees up board
space for other features. Both of the depop circuitry and the
thermal shutdown protection circuitry are integrated in UTC
PA3202, that reduce clicks and pops noise during power up or
shutdown mode operation.
A MUX control terminal ) LINE / HP ( allows selection between
the two sets of stereo input signals. To simplify the audio system
design, UTC PA3202 combines a stereo bridge-tied loads (BTL)
mode for speaker drive and a stereo single-end (SE) mode for
headphone drive into a single chip, where both modes are easily
switched by the BTL / SE input control pin signal.
FEATURES
* Improves depop circuitry to eliminate turn-on and turn-off
transients in output
* Output power:
-2W(typ.)@5V into 3Ω with 0.2% THD+N max (1kHz)
-800mW(typ.)@3.3V into 3Ω with 0.2% THD+N max (1kHz)
* Fully specified for use with 3-Ω Loads
* Stereo switchable bridged/single-ended power amplifiers
* Input MUX select terminal
* Thermal-shutdown protection
* Shutdown mode available |
