PTC PT2303
The PT2303 is a power amplifier utilizing CMOS Technology specially designed for audio purpose. It can deliver 2W × 2 power output to the 5V power voltage. The power consumption is very low in stand-by.DESCRIPTION
The power consumption is very low in stand-by. Total harmonic distortion is lower than 0.03%. The output mode can be switched between the SE (Single-Ended) or BTL (Bridge-Tied Load) mode. Built-in over-temperature protection, package size is not occupies PCB space. It is suitable for small or portable products.FEATURES
●●
●
●
●
● CMOS Technology Stereo input Output power 2W × 2 (4Ω) Low harmonics distortion (0.03%) SE and BTL modes operation Suppress the pop and click noise when mode changed
● Shutdown function, turn on can into save mode (Icc<0.5µA)
● Built-in overheat protect
APPLICATIONS
●●
●
● LCD monitor (for TV) Portable audio Multimedia speakers Other audio applications BLOCK DIAGRAM Tel: 886-66296288●Fax: 886-29174598● 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan PT2303 APPLICATION CIRCUIT CH1 IN VDD Ri 1uF 20k Rf 20k 6 8 1 -IN1 +IN1 Shut Down VDD Vref GND -IN2 +IN2 AMP2N AMP1N -OUT1 5 220uF 1k BTL/SE Sense ON OFF ShutDown VDD 4,13 POWER BLOCK AMP1P +OUT1 3...