HOLTEK HT82V731 User Manual
16-Bit Stereo Audio D/A Converter
Features
·
Wide supply voltage range: 2.4V~5.5V
·
CMOS technology
·
Low power consumption
·
Two voltage output channel in the same chip
Applications
·
CD ROM/VCD
·
MP3/PDA/Smartphone
·
Digital portable audio equipment
General Description
HT82V731 is a 16-bit digital-to-analog converter IC uti
lizing CMOS technology specially designed for stereo
audio application. It converts the 16 bits serial data into
an analog output voltage by high precision D/A con
verter.
With its excellent frequency response characteristics,
the HT82V731 provides users a low cost means of im-
HT82V731
·
16-bit dynamic range
·
Low total harmonic distortion
·
Data in 2¢s complement format, TTL
·
8-pin SOP package
·
Satellite/cable STB
·
Motherboard/MPEG card
plementing high quality audio voltage outputs. Besides,
its wide supply voltage range from 2.4V to 5.5V makes
the device also suitable for use in battery-powered sys
tems or in application areas with low current consump
tion requirements. It is compatible with TDA1311 and
available in 8-pin SOP package.
-
-
Block Diagram
B C K
W S
D I N
V D D
V S S
Pin Assignment
D a t a L a t c h
S e r i a l - t o - p a r a l l e l
C o n v e r s i o n
V
D D
S e r i a l - t o - p a r a l l e l
C o n v e r s i o n
B C K
1
W S
2
D I N
3
V S S
4
H T 8 2 V 7 3 1
8 S O P - A
O u t
+
D A C
O u t
+
o p
D A C
R C H
8
N C
7
L C H
6
V D D
5
o p
O u t
+
o p
R C H
L C H
Rev. 1.10 1 March 4, 2003
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, ground
¾
Positive power supply
¾
O Left channel output
No connection
¾
O Right channel output
HT82V731
Electrical Characteristics
Symbol Parameter
V
I
V
f
f
DD
DD
O
BCK
WS
Supply Voltage
Supply Current 5V
Maximum Output Amplitude 5V
Bit Clock Input Frequency
Word Select Input Frequency
THD Total Harmonic Distortion 5V 1kHz, 0dB*
DR Dynamic Range 5V
S/N Signal to Noise Ratio 5V
Note: ²*² means measured with 1kHz sinewave generated at a sampling rate of 192kHz.
Test Conditions
DD
Conditions
V
¾¾
Min. Typ. Max. Unit
2.4 5.0 5.5 V
¾¾¾
¾¾
¾¾ ¾¾
¾¾ ¾¾
¾
¾
¾¾16¾
A weighted at DIN
code=0000H
¾
Timing Diagrams
W S
R i g h t L e f t
tht
r
ft
2.5
65
0.055
92
Ta=25°C
6.0 mA
¾
Vpp
18.4 MHz
300 kHz
¾
¾
dB
%
Bit
¾
dB
B C K
D A T A
L S B + 1 M S B - 1
L S B M S B
S a m p l e O u t
Timing and input signals
Rev. 1.10 2 March 4, 2003
Application Circuits
V
1 0
D D
HT82V731
W
+
+
1 0 0 n F
F
4 7
m
1
2
3
B C K
W S
H T 8 2 V 7 3 1
D A T A
V S S
2 2 k
2 . 2 n F
2 2 k
2 . 2 n F
4 2 0 p F
W
4 2 0 p F
W
3
2 2 k
W
1 0 0 p F
2 2 k
W
1 0 0 p F
1
2
5
7
6
5
V D D
4
R C H
L C H
8
7
N C
6
Rev. 1.10 3 March 4, 2003
Loading...