AT73C209

Features www.DataSheet4U.com Power Management – Supply Input from USB or 1x Disposal Battery (Alkaline, NimH, NiCd) – Input Voltage Range: 0.9V to 1.8V – 2.7V/2.9V/3.1V/3.3V - 100 mA Step-Up DC/DC Converter for Main Supply – 2.7V to 3.5V (100mV step) - 150 mA LDO from USB supply – 2.4V to 3.0V (200mV step) - 60 mA LDO for Analog Supply – Reset Generator – SPI Interface and Internal Programming Registers – Dynamic Power Management – Very Low Quiescent Current Operation Stereo Audio DAC – Programmable Stereo Audio DAC (16-bits, 18-bits or 20-bits) – 93 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 Driver – Microphone Preamplifier – Stereo, Mono and Reverse Stereo Mixer – Left/Right Speaker Short-Circuit Detection Flag – 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 – Low Power Operation Applications: – Ideally Suited to Interface with Atmel’s AT8xC51SNDxC MP3 Microcontroller – Portable Music Players, Digital Cameras, CD Players, Handheld GPS Power Management and Analog Companions (PMAAC) AT73C209 Audio and Power Management 1. Description The AT73C209 is a fully integrated, low cost, combined Stereo Audio DAC and Power Management Circuit targeted for battery powered devices such as MP3 players in “walkman” format or “mass storage” USB format. Th...