HT82V731
Audio D/A Converter
F
eatures
路
CMOS technology
路
Low power consumption
路
Two voltage output channel in the same chip
路
16-bit dynamic range
路
Low total harmonic distortion
路
5 voltage single power supply
路
Data in 2壟s complement format, TTL
路
8-pin SOP package
Applications
路
Digital audio equipment
路
CD ROM/VCD
路
MPEG card
General Description
HT82V731 is a 16-bit digital-to-analog converter IC uti-
lizing CMOS technology specially designed for stereo
audio application.
HT82V731 converts the 16 bits serial data into an ana-
log output voltage. The digital data is internally con-
verted to floating point expression whose format
consists of 10 bits mantissa and 7step exponent.
Using an R-string voltage divider, this floating point ex-
pression 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
. 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
. 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
Pin Assignment
B C K
1
8
2
7
3
6
4
5
W S
D IN
V S S
R C H
N C
L C H
V D D
H T 8 2 V 7 3 1
8 S O P -A
Rev. 1.00
1
October 29, 2002