HT82V731 Datasheet, PDF (1/7 Pages) Holtek Semiconductor Inc – Audio D/A Converter

HT82V731
Audio D/A Converter
Features
· 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
· Data in 2¢s complement format, TTL
· 8-pin SOP package
Applications
· Digital audio equipment
· CD ROM/VCD
· 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
. lo a tin g D a ta
C o n v e r s io n
DAC
+op ^{O ut}
RCH
V DD
BCK
WS
D a ta L a tc h
D IN
+op ^{O ut}
+op ^{O ut}
LC H
VDD
VSS
. lo a tin g D a ta
C o n v e r s io n
DAC
Pin Assignment
BCK 1
WS 2
D IN 3
VSS 4
8 ^RCH
7 ^NC
6 ^{LC H}
5 ^VDD
H T82V 731
8 S O P -A
Rev. 1.00
1
October 29, 2002