DESCRIPTION
The PT2307 is an integration audio power amplifier IC utilizing advanced CMOS technology. Supports 2 mono MIC input and 2 stereo line input, input gain of each amp can be set individually to meet customers’ needs. Built-in digital controlled volume has 32 steps from 0dB ~ -90dB, the headphone volume control has 8 steps ranging from 0dB ~ -10.5dB which can be further attenuate from the main volume. All functions can be controlled via I2C bus. In the output section, the PT2307 is equipped with both stereo headphone driver and mono speaker amp maximum output up to 1 watt.

FEATURES
• 1W (8Ω) mono channel speaker output + stereo headphone driver
• Digital controlled volume
• Main volume: 32 steps/0dB ~ -90dB
• Headphone volume: 8 steps/0dB ~ -10.5dB
• 2 microphone inputs, 1 microphone output
• 2 stereo audio inputs, selected via I2C bus
• Dual headphone output mode Integrated. (PT2307-A or PT2307-B)
• Mute function
• Shutdown (power save) mode
• I2C register keeps the last status when the shutdown active
• Each section can be turn off individually for most power saving
• Over Temperature protection
• Very low pop noise when mode changed
• Wide operating voltage: 2V ~ 6V
• Available in 24 Pins TSSOP

APPLICATIONS
• PDA
• Portable mini audio system
• Multimedia audio household appliances system
• Electronic Dictionary
• Translator
• GPS