Line Card



【Basic Info】

【Product Feature】

AT73C240 provides a 90dBsound quality of 20-bit resolution Stereo system with 20mW stereo earphone driver. It provides 1W of audio amplification at operating voltage of 5.5V. Audio volume, mute, off mode, and 16, 18 or 20-bit conversion can be achieved through 4-wired SPI or TWI interface through external software control.

• Stereo Audio DAC
– 2.7V to 3.3V Analog Supply Operation
– 2.4V to 3.3V Digital Supply Operation
– 20-bit Stereo Audio DAC
– 90 dB SNR Playback Stereo Channels
– 32 Ohm/20 mW Stereo Headset Drivers with Master Volume and Mute Controls
– Stereo Line Level Input with Volume Control/Mute and Playback through the Headset Drivers
– Accepts Mixed Signals from All Signal Paths (Line Inputs and DAC Output)
– 8, 11.024, 16, 22.05, 24, 32, 44.1 and 48 kHz Sampling Rates
– 256x or 384xFs Master Clock Frequency
– I2S Serial Audio Interface
• Mono Audio Power Amplifier
– Supply Input from Main Li-Ion Battery (3V to 5.5V)
– 440 mW on 8 Ohm Load
– Programmable Volume Control (-22 to +20 dB)
– Fully Differential Structure, Input and Output
– 8 mA Drain Current in Active Mode
– Power-down Mode (Consumption Less than 2 μA)
– Minimum External Components (Direct Connection to the Loudspeaker)
• Applications: Mobile Phones, Digital Cameras, PDAs, SmartPhones, DECT Phones, Music Players


Application developer and design compnay requires high quality DAC for audio solution to inprove the sound quality of music player systems. AT73C240 applies to customers as follows:
Multi-media product Manfacturer
Multi-media product OEM
Multi-media product design house
AT73C240 target the following markets:
High quality Multi-media player
Multi-media communication facilities (PDA, Multi-media VOIP phone, GPS handheld products, digital cameras, etc)