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Mixed Mode Analog Companion IC
Mixed Mode Analog Companion IC
AT73C209 Analog Companion power supply and audio interface IC designed for low-cost music players. The AT73C209 supplies the required voltages and currents to all the sections of these portable devices taking energy from a single alkaline battery, and also provides a high-quality audio interface.
The AT73C209 integrates power management and high-quality audio circuitry on a single chip. It has 2 linear regulators (LDO) and one very low input voltage and high-efficiency Step Up switching regulator (DC-DC) working down to 0.9V, thus particularly suited for 1 cell Alkaline/NiMh batteries. On the audio side, the AT73C209 offers an audio-quality 16-bit Stereo Audio DAC with headset driver and microphone preamplifier to interface with the recording stage of a MCU."The AT73C209 introduction confirms Atmel's strategy to provide analog companions for generic handheld applications," commented Michele Casetta, Marketing Manager for Atmel's Power Management and Analog Companions (PMAAC) Product Line.