UDA1320ATS datasheet(3/20 Pages) PHILIPS

3 / 20 page

2000 Jan 10

Philips Semiconductors

Preliminary speciﬁcation

Low-cost stereo ﬁlter DAC

UDA1320ATS

FEATURES

1.1

General

• Low power consumption.

• 2.7 to 3.6 V power supply.

• Selectable control via L3 microcontroller interface or via

static pin control.

• 256, 384 and 512fs system clock (fsys), selectable via

the L3 interface or 256 and 384fs clock mode via static

pin control

• supports sampling frequencies from 16kHz to 48kHz.

• Integrated digital filter plus non inverting DAC

Digital-to-Analog Converter (DAC).

• Easy application and no analog post filtering required for

DAC.

• Slave mode only applications.

• Small package size (SSOP16).

1.2

Multiple format input interface

• I2S-bus, MSB-justified and LSB-justified 16,18 and 20

bits format compatible (in L3-mode).

• I2S-bus and LSB-justified 16,18 and 20 bits format

compatible in static mode.

• 1fs input format data rate.

1.3

DAC digital sound processing

• Digital logarithmic volume control via L3.

• Digital de-emphasis for 32, 44.1 and 48 kHz fs via

L3 or 44.1 kHz fs via static pin control.

• Soft mute via static pin control or via L3 interface.

1.4

Advanced audio conﬁguration

• Stereo line output (under L3 volume control)

• High linearity, wide dynamic range, low distortion.

APPLICATIONS

• Portable digital audio equipment, see Fig.8.

• Set-top boxes

GENERAL DESCRIPTION

The UDA1320ATS/N2 is a single-chip non inverting stereo

DAC employing bitstream conversion techniques. The low

power consumption and low voltage requirements make

the device eminently suitable for use in digital audio

equipment which incorporates playback functions.

The UDA1320ATS/N2 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 UDA1320ATS/N2 can be used in two modes, either

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 UDA1320ATS/N2 can be

operated in the 256fs and 384fs system clock mode. The

mute, de-emphasis for 44.1 kHz and 4 digital input formats

(I2S and 16, 18, 20 bits LSB formats) can be selected via

static pins. The L3 interface cannot be used in this

application mode, also, volume control is not available in

this mode.

ORDERING INFORMATION

TYPE NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

UDA1320ATS

SSOP16

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

SOT369-1

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