Holtek Semiconductor Inc HT82V731 Datasheet
HT82V731
Preliminary
Features
CMOS technology
·
Low power consumption
·
Two voltage output channel in the same
·
chip
Applications
Digital audio equipment
·
CD ROM/VCD
·
General Description
HT82V731 is a 16-bit digital-to-analog con
verter IC utilizing CMOS technology specially
designed for stereo audio application.
HT82V731 converts the 16 bits serial data into
an analog output voltage. The digital data is in
ternally converted to floating point expression
whose format consists of 10 bits mantissa and
7step exponent.
Audio D/A Converter
16-bit dynamic range
·
Low total harmonic distortion
·
5 voltage single power supply
·
8-pin SOP package
·
MPEG card
·
Using an R-string voltage divider, this floating
point expression data is then converted to
analog voltage.
It is compatible with TDA1311. It is available in
8-pin SOP package.
-
Block Diagram
BCK
WS
DIN
VDD
VSS
D ata Latch
Floating D ata
C onversion
V
DD
Floating D ata
C onversion
Out
+
DAC
Out
+
op
DAC
1 February 1, 2000
op
Out
+
op
RCH
LC H
Pin Assignment
Preliminary
HT82V731
BCK
WS
DIN
VSS
1
2
3
4
RCH
8
NC
7
LC H
6
VDD
5
HT82V731
8 S O P
Pin Description
Pin No. Pin Name I/O Description
1
2
3
4
5
6
7
8
BCK
WS
DIN
VSS
VDD
LCH
NC
RCH
I Bit serial clock input
I Word select input
I Data input
Negative power supply
¾
Positive power supply
¾
O Left channel output
No connection
¾
O Right channel output
Electrical Characteristics
Ta=25°C
Symbol Parameter
Test Conditions
DD
Conditions
¾¾
V
V
O
Maximum Output Amplitude 5V
THD Total Harmonic Distortion 5V 1kHz, 0dB
DR Dynamic Range 5V
¾¾16¾
S/N Signal to Noise Ratio 5V 1kHz, 0dB
CT Cross Talk 5V 1kHz, 0dB
2 February 1, 2000
Min. Typ. Max. Unit
¾
2.5
0.12
¾
¾
Vpp
%
Bit
¾
82
¾
¾¾¾
dB
dB
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