Datasheet

2000 Jul 31 3
NXP Semiconductors Product specification
Low power audio DAC with PLL UDA1334ATS
1 FEATURES
1.1 General
• 2.4 to 3.6 V power supply voltage
• On-board PLL to generate the internal system clock:
– Operates as an asynchronous DAC, regenerating the
internal clock from the WS signal (called audio mode)
– Generates audio related system clock (output) based
on 32, 48 or 96 kHz sampling frequency (called video
mode).
• Integrated digital filter plus DAC
• Supports sample frequencies from 16 to 100 kHz in
asynchronous DAC mode
• No analog post filtering required for DAC
• Easy application
• SSOP16 package.
1.2 Multiple format data interface
• I
2
S-bus and LSB-justified format compatible
• 1f
s
input data rate.
1.3 DAC digital features
• Digital de-emphasis for 44.1 kHz sampling frequency
• Mute function.
1.4 Advanced audio configuration
• High linearity, wide dynamic range and low distortion.
1.5 PLL system clock generation
• Integrated low jitter PLL for use in applications in which
there is digital audio data present but the system cannot
provide an audio related system clock. This mode is
called audio mode.
• The PLL can generate 256 × 48 kHz and 384 × 48 kHz
from a 27 MHz input clock. This mode is called video
mode.
2 APPLICATIONS
This audio DAC is excellently suitable for digital audio
portable application, specially in applications in which an
audio related system clock is not present.
3 GENERAL DESCRIPTION
The UDA1334ATS is a single chip 2 channel
digital-to-analog converter employing bitstream
conversion techniques, including an on-board PLL.
The extremely low power consumption and low voltage
requirements make the device eminently suitable for use in
low-voltage low-power portable digital audio equipment
which incorporates a playback function.
The UDA1334ATS supports the I
2
S-bus data format with
word lengths of up to 24 bits and the LSB-justified serial
data format with word lengths of 16, 20 and 24 bits.
The UDA1334ATS has basic features such as
de-emphasis (44.1 kHz sampling frequency, only
supported in audio mode) and mute.
4 ORDERING INFORMATION
TYPE
NUMBER
PACKAGE
NAME DESCRIPTION VERSION
UDA1334ATS SSOP16 plastic shrink small outline package; 16 leads; body width 4.4 mm SOT369-1