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TDA1388T Datasheet(PDF) 2 Page - NXP Semiconductors

No. de pieza TDA1388T
Descripción Electrónicos  Bitstream continuous calibration filter-DAC for CD-ROM audio applications
Download  24 Pages
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Fabricante Electrónico  PHILIPS [NXP Semiconductors]
Página de inicio  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TDA1388T Datasheet(HTML) 2 Page - NXP Semiconductors

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1996 Jul 17
2
Philips Semiconductors
Objective specification
Bitstream continuous calibration filter-DAC
for CD-ROM audio applications
TDA1388
FEATURES
Multiple format input interface
• I2S-bus and LSB-justified input format compatible
• 1fs input format data rate.
Extensive channel manipulation features
• Separate soft mute on left and right channel
• Channel interchange function (left to right and right to
left)
• Monaural function (left to right or right to left)
• True mono function 12(left plus right).
Digital sound processing
• Separate digital volume control for left and right
channels
• Digital tone control, bass boost and treble
• dB-linear volume and tone control (low microcontroller
load)
• Digital de-emphasis
• Soft mute.
Advanced audio output configuration
• Stereo line output (under microcontroller volume
control)
• Stereo headphone output (under 5-tap potentiometer
volume control)
• Line output independent of headphone output volume
• Power on/off click prevention circuitry
• High linearity, dynamic range, low distortion.
General
• Integrated digital filter plus DAC plus headphone driver
• No analog post filter required
• Easy application
• Functions controllable by static pins or by
microcontroller interface
• 5 V power supply
• Low power consumption
• Small package size (SO28 and SSOP28).
GENERAL DESCRIPTION
The TDA1388 CMOS digital-to-analog bitstream converter
incorporates an up-sampling digital filter and noise shaper,
unique signal processing features and integrated line and
headphone drivers. The digital processing features are of
high sound quality due to the wide dynamic range of the
bitstream conversion technique.
The TDA1388 supports the I2S-bus data input mode with
word lengths of up to 20 bits and the LSB justified serial
data input format with word lengths of 16, 18 and 20 bits.
Two cascaded half-band filters and a sample-and-hold
function increase the oversampling rate from 1fs to 64fs.
A 2nd-order noise shaper converts this oversampled data
to a bitstream for the 5-bit continuous calibration
Digital-to-Analog Converters (DACs).
On board amplifiers convert the output current to a voltage
signal capable of driving a line output. The signal is also
used to feed the integrated headphone amplifiers.
The volume of the headphone is controlled by an external
potentiometer.
The TDA1388 has special sound processing features for
use in CD-ROM audio applications, which can be
controlled by static pins or microcontroller interface.
These functions are de-emphasis, volume, bass boost,
treble, soft mute and the channel manipulation functions
needed for ATAPI-compliant functionality in CD-ROM
audio processing.


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