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UDA1380 概述

The UDA1380 is a stereo audio coder-decoder, available in TSSOP32 (UDA1380TT) and HVQFN32 (UDA1380HN).

The front-end of the UDA1380 is equipped with a stereo line input, which has a PGA control, and a mono microphone input with an LNA and a VGA.

The DAC part is equipped with a stereo line output and a headphone driver output. The headphone driver is capable of driving a 16 Ω load. The headphone driver is also capable of driving a headphone without the need for external DC decoupling capacitors, since the headphone can be connected to a pin VREF(HP) on the chip.

UDA1380 特性

• 2.4 to 3.6 V power supply;
• 5 V tolerant digital inputs (at 2.7 to 3.6 V power supply);
• 24-bit data path for Analog-to-Digital Converter (ADC) and Digital-to-Analog Converter (DAC);
• Selectable control via L3-bus microcontroller interface or I2C-bus interface; choice of 2 device addresses in L3-bus and I2C-bus mode;
• Supports sample frequencies from 8 to 55 kHz for the ADC part, and 8 to 100 kHz for the DAC part. The ADC does not support DVD audio (96 kHz audio), only Mini-Disc (MD), Compact-Disc (CD) and Moving Picture Experts Group Layer-3 Audio (MP3). For playback 8 to 100 kHz is specified. DVD playback is supported.