HOLTEK HT82V738 User Manual
24-Bit Stereo Audio D/A Converter
Features
·
Single power supply voltage: 3V~5V
·
Low power consumption
·
Low distortion
·
Low clock jitter sensitivity
·
High SNR ratio and dynamic range
Applications
·
DVD players
·
Home theater systems
·
Digital TV
·
Digital set top boxes
General Description
The HT82V738 is a high performance audio DAC con
verter. It provides digital de-emphasis (32, 44.1 and
48kHz), external mute control and adjustment for serial
data and clock. The HT82V738 accepts data at audio
rates up to 96kHz. It performs within a wide dynamic
HT82V738
·
Low harmonic distortion
·
Wide temperature range
·
Control feature for click and Pops
·
On-chip digital de-emphasis for 32, 44.1 and 48kHz
·
16-pin NSOP package
·
MP3 players
·
CD players
·
Automotive systems
range, high SNR ratio and has low clock jitter sensitivity.
HT82V738 is an ideal DAC for DVD players, MP3 play
ers and set-top box systems. It is also pin-compatible
with CS4340.
-
Block Diagram
L R C K
S D A T A
Pin Assignment
R S T
D I F 0 D I F 1 M C L K
S e r i a l
I n p u t
I n t e r f a c e
I n t e r p o l a t i o n
I n t e r p o l a t i o n
R S T
S D A T A
S C L K / D E M 1
L R C K
M C L K
D I F 1
D I F 0
D E M 0
F i l t e r
F i l t e r
D e - e m p h a s i s
D E M 0 M U T E CS C L K / D E M 1
1
2
3
4
5
6
7
8
H T 8 2 V 7 3 8
1 6 N S O P - A
D S
D S
1 6
1 5
1 4
1 3
1 2
1 1
1 0
D A C
D A C
9
A n a l o g F i l t e r
A n a l o g F i l t e r A O U T L
E x t e r n a l
M u t e C o n t r o l
M U T E C
A O U T A
V A
A G N D
A O U T B
R E F _ G N D
V Q
F I L T +
A O U T R
Rev. 1.00 1 October 16, 2003
Pin Description
Pin
No.
6, 7 DIF1, DIF0 I
Pin Name I/O Description
1 RST
2 SDATA I Serial data
3 SCLK/DEM1 I Serial clock/de-emphasis
4 LRCK I Left/right clock
5 MCLK I
I Reset
Master clock
Sample
Rate
(kHz)
32 4.0960 6.1440 8.1920 12.2880 16.3840
44.1 5.6448 8.4672 11.2896 16.9344 22.5792
48 6.1440 9.2160 12.2880 18.4320 24.5760
64 8.1920 12.2880
88.2 11.2896 16.9344
96 12.2880 18.4320
Digital interface format
DIF1 DIF0 Description
00I
0 1 Left justified, up to 24-bit data
1 0 Right justified, 24-bit data
1 1 Right justified, 16-bit data
128x 192x 256x 384x 512x
MCLK (MHz)
HRM BRM
¾¾¾
¾¾¾
¾¾¾
2
S, up to 24-bit data
HT82V738
De-emphasis control DEM0 and DEM1
Internal serial clock mode
DEM1 DEM0 Description
0 0 Disabled
0 1 44.1kHz
1 0 48kHz
8 DEM0 I
9 FILT+ I Positive voltage reference
10 VQ I Quiescent voltage
11 REF_GND I Reference ground
12 AOUTB O Analog output B
13 AGND I Analog ground
14 VA I Analog power
15 AOUTA O Analog output A
16 MUTEC O Mute control
1 1 32kHz
External serial clock mode
DEM0 Description
0 Disabled
1 44.1kHz
Rev. 1.00 2 October 16, 2003
HT82V738
Absolute Maximum Ratings
Supply Voltage ..........................VSS-0.3V to VSS+6.0V
Input Voltage .............................V
3V to VDD+0.3V
SS-0.
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil
ity.
Electrical Characteristics
Analog Characteristics
Symbol Parameter
Dynamic Performance
Dynamic Range (18~24-bit)
Dynamic Range (16-bit)
Total Harmonic
Distortion+Noise
THD+N
(18~24-bit)
Total Harmonic
Distortion+Noise (16-bit)
Interchannel Isolation 5V
Dynamic Performance
Dynamic Range (18~24-bit)
Dynamic Range (16-bit)
Total Harmonic
THD+N
Distortion+Noise (18~24-bit)
Total Harmonic
Distortion+Noise (16-bit)
Interchannel Isolation 3V
Test Conditions Base-rate Mode High-rate Mode
V
Conditions Min. Typ. Max. Min. Typ. Max.
DD
Unweighted
A-weighted
5V
Unweighted
A-weighted
5V
Unweighted
A-weighted
3V
Unweighted
A-weighted
3V
Storage Temperature ...........................-50°Cto125°C
Operating Temperature ..........................-10°Cto70°C
Ta =-10°Cto70°C
93
¾
¾
¾
¾
95
91
94
¾¾
¾¾
¾¾
¾¾
92
95
88
94
¾
¾
¾
¾
¾¾-88 ¾¾-88 ¾
¾¾-86 ¾¾-86 ¾
¾¾90¾¾
91
¾
¾
¾
¾
94
90
92
¾¾
¾¾
¾¾
¾¾
90
90
91
88
90
¾
¾
¾
¾
¾
¾ ¾ -88 ¾ ¾ -88 ¾
¾ ¾ -86 ¾ ¾ -86 ¾
¾¾90¾¾
90
¾
Unit
dB
dB
dB
dB
dB
dB
-
Analog Characteristics
Symbol Parameter
Test Conditions
V
DD
Conditions
Min. Typ. Max. Unit
Analog Output
Full Scale Output Voltage
V
Quiescent Voltage
Q
Interchannel Gain Mismatch
Gain Drift
R
C
AC-load Resistance
L
Load Capacitance
L
¾¾ ¾
¾¾ ¾
¾¾ ¾
¾¾ ¾
¾¾
¾¾ ¾¾
0.7VA
0.5VA
0.1
100
3
¾¾kW
¾
¾
¾
¾ ppm/°C
100 pF
V
PP
VDC
dB
Rev. 1.00 3 October 16, 2003
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