PT2300

ANGUS ELECTRONICS CO., LTD Tel: (852) 2345 0540 Fax: (852) 2345 9948 Web Site: www.angus.com.hk 2W x 2 Class AB Audio Power Amplifier PT2300 DESCRIPTION The PT2300 is a power amplifier utilizing CMOS Technology specially designed for audio purpose. It can deliver 2W × 2 power output to the 4Ω load. 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. The built-in volume controller can change the output volume by an external supplied DC voltage. 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 (Vcc=6V, THD=1%, RL=4Ω) Low harmonics distortion (0.03%) Include 32 steps volume controller SE and BTL modes operation Suppress the pop and click noise when mode changed Shutdown function, turn on can into save mode (Icc<0.7µA) Built-in overheat protect APPLICATIONS LCD monitor (for TV) Portable audio Multimedia speakers Other audio applications PT2300 V1.0 -1- December, 2005 2W x 2 Class AB Audio Power Amplifier PT2300 BLOCK DIAGRAM Vo1 Vin1 Bypass Vin2 Vo2 Vcc Shutdown GND Voltage Bypass and De-Pop Noise + + - Power Management Rf Ri 20K - 20K + AMP1N -OUT1 32 steps DC Control Volume + AMP1P +OUT1 Rf Ri 20K - 20K + AMP2N SE/BTL -OUT2 + AMP2P +OUT2 DC Vol PT2300 V1.0 ...