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UNISONIC TECHNOLOGIES CO., LTD
PA3312
DUAL 2.6W AUDIO POWER
AMPLIFIER WITH FOUR
SELECTABLE GAIN SETTINGS
AND INPUT-MUX CONTROL
DESCRIPTION
The UTC PA3312 is a monolithic integrated circuit that stereo bridged audio power amplifiers capable of producing 2.6W into 3Ω with less than 10% THD+N or 1W into 8Ω with less than 0.65% THD+N. This device minimizes the number of external components needed, simplifying the design, and freeing up board space for other features. Both of the depop circuitry and the thermal shutdown protection circuitry are integrated in UTC PA3312, that reduce pops and clicks noise during power up or shutdown mode operation .
Amplifier gain is internally configured and controlled by way of two terminals (GAIN0 and GAIN1). BTL gain setting of 6 dB, 10 dB, 15.6dB, 21.