General description

The UDA1384 is a single-chip consisting of 4 plus 1 Analog-to-Digital Converters (ADC) and 6 Digital-to-Analog Converters (DAC) with signal processing features employing bitstream conversion techniques. The multichannel configuration makes the device eminently suitable for use in digital audio equipment which incorporates surround feature.

Features

General
■ 2.7 V to 3.6 V power supply
■ 5 V tolerant digital inputs
■ 24-bit data path
■ Selectable control: via L3-bus or I2C-bus microcontroller interface
■ Supports sample frequency ranges for:
◆ Audio ADC: fs = 16 kHz to 100 kHz
◆ Voice ADC: fs = 7 kHz to 50 kHz
◆ Audio DAC: fs = 16 kHz to 200 kHz
■ Separate power control for ADC and DAC
■ ADC plus integrated high-pass filter to cancel DC offset
■ Integrated digital filter plus DAC
■ Slave mode only applications
■ Easy application

Multiple format data interface

■ Audio interface supports standard I2S-bus, MSB-justified, LSB-justified and two multichannel formats
■ Voice interface supports I2S-bus and mono channel formats

Digital sound processing

■ Control via L3-bus or I2C-bus:
◆ Channel independent digital logarithmic volume
◆ Digital de-emphasis for fs = 32 kHz, 44.1 kHz, 48 kHz or 96 kHz
◆ Soft or quick mute
◆ Output signal polarity control

Advanced audio configuration

■ Inputs:
◆ 4 single-ended audio inputs (2 × stereo) with programmable gain amplifiers
◆ 1 single-ended voice input
■ Outputs:
◆ 6 differential audio outputs (3 × stereo)
■ DSD mode to support stereo DSD playback
■ High linearity, wide dynamic range and low distortion
■ DAC digital filter with selectable sharp or soft roll-off

Applications

■ Excellently suitable for multichannel home audio-video application