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UDA1324TS

Ultra low-voltage stereo filter DAC

Philips Electronics 

Philips Semiconductors

Ultra low-voltage stereo filter DAC

Preliminary specification

UDA1324TS

FEATURES

General

• Low power consumption

• Ultra low power supply voltage from 1.9 to 2.7 V

• Selectable control via L3 microcontroller interface or via

static pin control

• System clock frequencies of 256fs, 384fs and 512fs

selectable via L3 interface or 256fs and 384fs via static

pin control

• Supports sampling frequencies (fs) from 16 to 48 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).

Multiple format input interface

• L3 mode: I2S-bus, MSB-justified or LSB-justified

16, 18 and 20 bits format compatible

• Static pin mode: I2S-bus or LSB-justified

16, 18 and 20 bits format compatible

• 1fs input format data rate.

DAC digital sound processing

• Digital logarithmic volume control in L3 mode

• Digital de-emphasis selection 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 in static pin mode or in L3 mode.

Advanced audio configuration

• Stereo line output (volume control in L3 mode)

• High linearity, wide dynamic range and low distortion.

APPLICATIONS

• Portable digital audio equipment.

GENERAL DESCRIPTION

The UDA1324TS is a single-chip stereo DAC employing

bitstream conversion techniques. The ultra low-voltage

requirements make the device eminently suitable for use

in portable digital audio equipment which incorporates

playback functions.

The UDA1324TS 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 UDA1324TS can be used in two modes: L3 mode or

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 UDA1324TS can be operated

in the 256fs and 384fs 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.

ORDERING INFORMATION

TYPE

NUMBER

UDA1324TS

NAME

SSOP16

PACKAGE

DESCRIPTION

plastic shrink small outline package; 16 leads; body width 4.4 mm

VERSION

SOT369-1

2000 Jan 20

2

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