UDA1338H

Multichannel audio coder-decoder

GENERAL DESCRIPTION

The is a single-chip consisting of 4 plus 1 analog-to-digital converters and 6 digital-to-analog converters 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 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 to 100 kHz

   – Voice ADC: fs = 7 to 50 kHz

   – Audio DAC: fs = 16 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, 44.1, 48 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.