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TDA1388T_95 View Datasheet(PDF) - Philips Electronics

Part Name
Description
Manufacturer
TDA1388T_95 Datasheet PDF : 24 Pages
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Philips Semiconductors
Bitstream continuous calibration
filter-DAC for CD-ROM audio
Objective specification
TDA1388T
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 (left plus right)/2.
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 TDA1388T CMOS digital-to-analog bitstream
convertor 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 TDA1388T 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 convertors (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 TDA1388T 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.
1995 Dec 08
2
 

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