UDA1330ATS: Low-cost stereo filter DAC ARCHIVED

Overview

Archived content is no longer updated and is made available for historical reference only.

The UDA1330ATS is a single-chip stereo DAC employing bitstream conversion techniques.

The UDA1330ATS supports the I²S-bus data format with word lengths of up to 20 bits, the MSB-justified data format with word lengths of up to 20 bits and the LSB-justified serial data format with word lengths of 16, 18 and 20 bits.

The UDA1330ATS can be used in two modes: L3 mode or the static pin mode.

In the L3 mode, all digital sound processing features must be controlled via the L3 interface, including the selection of the system clock setting.

In the two static modes, the UDA1330ATS can be operated in the 256f_s and 384f_s system clock mode. Muting, de-emphasis for 44.1 kHz and four digital input formats (I²S-bus or LSB-justified 16, 18, and 20 bits) can be selected via static pins. The L3 interface cannot be used in this application mode, so volume control is not available in this mode.

MoreLess

Features

General

Low power consumption
Power supply voltage from 2.7 to 5.5 V
Selectable control via L3 microcontroller interface or via static pin control
System clock frequencies of 256f_s, 384f_s and 512f_s selectable via L3 interface or 256f_s and 384f_s via static pin control
Supports sampling frequencies (f_s) from 8 to 55 kHz
Integrated digital filter plus non-inverting
Digital-to-Analog Converter (DAC)
No analog post filtering required for DAC
Slave mode only applications
Easy application
Small package size (SSOP16)
TTL tolerant input pads
Pin and function compatible with the UDA1320ATS

Multiple format input interfaces

L3 mode: I²S-bus, MSB-justified or LSB-justified 16, 18 and 20 bits format compatible
Static pin mode: I²S-bus and LSB-justified 16, 18 and 20 bits format compatible
1f_s input format data rate

DAC digital sound processing

Digital logarithmic volume control in L3 mode
Digital de-emphasis for 32, 44.1 and 48 kHz sampling frequencies in L3 mode or 44.1 kHz sampling frequency in static pin mode
Soft mute control both in static pin mode and L3 mode

Advanced audio configuration

Stereo line output (volume control in L3 mode)
High linearity, wide dynamic range, and low distortion