PT2301

1 Watt Audio Power Amplifier DESCRIPTION Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2301 PT2301 is a multi-purpose audio power amplifier IC utilizing advanced CMOS technology. PT2301 includes 2 microphone inputs and 2 stereo line inputs. PT2301 supports headphone stereo sound output and a single channel loudspeaker output terminal. PT2301 is a low noise power amplifier with a maximum output of 1 watt. It uses the I2C protocol and has a broad volume control range (+15dB ~ -90dB). FEATURES 1W (8 Ω) single channel loudspeaker output + stereo headphones driver Digital volume control (49 steps /+15dB ~ -90dB) 2 microphone inputs, 1 microphone output The output-port does not need to be connected to the AC capacitor (PT2301-A) Standby mode and Mute function Thermal shutdown protection circuit Energy Save function Extremely low (POP) noise Wide working voltage range: 2.7V ~ 5.5V Low THD: earphone < 0.07%, speaker < 0.03% Available in 24 Pin, TSSOP Package APPLICATIONS Electronic dictionary PDA DSC (Digital Still Camera) PT2301 v1.2 -1- August, 2004 1 Watt Audio Power Amplifier PIN CONFIGURATION Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2301 L1L 1 L2L 2 MIC1 3 VSS2 4 SCL 5 SDA 6 VCC 7 MICOUT 8 MIC2 9 L2R 10 L1R 11 REF 12 PT2301 Note: PT2301-A Pin 19 is VEE, PT2301-B Pin 19 is NC. 24 MIC_SENSE 23 HP_SENSE 22 LOUT 21 VP1 20 SP+ 19 VEE (*) 18 SP17 VP2 16 ROUT 15 VSS1 14 /SHUTDOWN 13 ...