UDA1345 PHILIPS [NXP Semiconductors], UDA1345 Datasheet - Page 2

• Manufacturer Part Number: UDA1345
• Description: Economy audio CODEC
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
FEATURES
General
Multiple format input interface
DAC digital sound processing
The sound processing features of the UDA1345TS can
only be used in L3 microcontroller mode:
Note: in contrast to the UDA1344TS, the UDA1345TS
does not have bass-boost and treble.
ORDERING INFORMATION
2000 Apr 18
UDA1345TS
Low power consumption
2.4 V to 3.6 V power supply range with 3.0 V typical
5 V tolerant TTL compatible digital inputs
256, 384 and 512f
Supports sampling frequencies from 8 to 100 kHz
Non-inverting ADC plus integrated high-pass filter to
cancel DC offset
The ADC supports 2 V (RMS) input signals
Overload detector for easy record level control
Separate power control for ADC and DAC
Integrated digital interpolation filter plus non-inverting
DAC
Functions controllable either by L3 microcontroller
interface or via static pins
The UDA1345TS is pin and function compatible with the
UDA1344TS
Small package size (SSOP28).
I
16, 18 and 20 bits format compatible
Three combined data formats with MSB data output and
LSB 16, 18 and 20 bits data input
1f
Digital dB-linear volume control (low microcontroller
load) via L3 microcontroller with 1 dB steps
Digital de-emphasis for 32, 44.1 and 48 kHz
Soft mute via cosine roll-off (in 1024 samples).
Economy audio CODEC
2
TYPE NUMBER
S-bus, MSB-justified up to 24 bits and LSB-justified
s
input and output format data rate.
s
system clock
SSOP28
NAME
plastic shrink small outline package; 28 leads; body width 5.3 mm
2
Advanced audio configuration
GENERAL DESCRIPTION
The UDA1345TS is a single-chip stereo Analog-to-Digital
Converter (ADC) and Digital-to-Analog Converter (DAC)
with signal processing features employing bitstream
conversion techniques. The 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 recording and
playback functions.
The UDA1345TS supports the I
word lengths of up to 24 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 UDA1345TS also supports three combined data
formats with MSB justified data output and LSB 16, 18
and 20 bits data input.
The UDA1345TS can be used either with static pin control
or under L3 microcontroller interface. In L3 mode the
UDA1345TS has basic sound features in playback mode
such as de-emphasis, volume control and soft mute.
DESCRIPTION
Stereo single-ended input configuration
Stereo line output (under microcontroller volume
control), no post filter required
High linearity, dynamic range and low distortion.
PACKAGE
Preliminary specification
2
S-bus data format with
UDA1345TS
VERSION
SOT341-1