Preliminary
F
eatures
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HT82V731
Audio D/A Converter
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CMOS technology
Low power consumption
Two voltage output channel in the same
chip
16-bit dynamic range
Low total harmonic distortion
5 voltage single power supply
8-pin SOP package
Applications
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Digital audio equipment
CD ROM/VCD
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MPEG card
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.
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
O u t
F lo a tin g D a ta
C o n v e r s io n
V
B C K
W S
D IN
D a ta L a tc h
+
O u t
D D
D A C
+
o p
R C H
o p
+
V D D
V S S
F lo a tin g D a ta
C o n v e r s io n
o p
O u t
L C H
D A C
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February 1, 2000
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