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PDF WM8762 Data sheet ( Hoja de datos )
| Número de pieza | WM8762 | |
| Descripción | 24-bit 192kHz Stereo DAC | |
| Fabricantes | Wolfson Microelectronics | |
| Logotipo |  |
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24-bit 192kHz Stereo DAC
WM8762
DESCRIPTION
The WM8762 is a high performance stereo DAC designed
for audio applications such as DVD, home theatre systems,
and digital TV. The WM8762 supports data input word
lengths from 16 to 24-bits and sampling rates up to 192kHz.
The WM8762 consists of a serial interface port, digital
interpolation filters, multi-bit sigma delta modulators and
stereo DAC in a very small 8-pin SOIC package.
The WM8762 supports a 16-24-bit left justified digital audio
interface.
The WM8762 is an ideal device to interface to AC-3,
DTS, and MPEG audio decoders for surround sound
applications, or for use in DVD players, including supporting
the implementation of 2 channels at 192kHz for high-end
DVD-Audio applications.
FEATURES
• Stereo DAC
• Audio Performance
- 98dB SNR (‘A’ weighted @ 48kHz)
- -84dB THD
• Sampling Frequency: 8kHz – 192kHz
• Audio Data Interface Format
- 16-24-Bit Left Justified
• 2.7V – 5.5V Supply Operation
• 8-lead SOIC Package
APPLICATIONS
• DVD Players
• Digital TV
• Digital Set Top Box
BLOCK DIAGRAM
www.DataSheet4U.com
BCKIN
LRCIN
DIN
SERIAL
INTERFACE
MUTE
MUTE
DIGITAL
FILTERS
SIGMA
DELTA
MODULATOR
RIGHT
DAC
SIGMA
DELTA
MODULATOR
LEFT
DAC
VOUTR
VOUTL
W
WM8762
MCLK
VDD GND
WOLFSON MICROELECTRONICS plc
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Production Data, July 2006, Rev 4.2
Copyright 2006 Wolfson Microelectronics plc
1 page  
WM8762
Production Data
DC ELECTRICAL CHARACTERISTICS
PARAMETER
Supply range
Ground
Supply current
Supply current
Power down current (note 3)
SYMBOL
VDD
GND
TEST CONDITIONS
VDD = 5V
VDD = 3.3V
VDD=3.3V
MIN
2.7
TYP
MAX
UNIT
5.5 V
0V
26 mA
20 mA
0.5 mA
ELECTRICAL CHARACTERISTICS
Test Conditions
VDD = 5V, GND = 0V, TA = +25oC, fs = 48kHz, MCLK = 256fs unless otherwise stated.
PARAMETER
SYMBOL TEST CONDITIONS
MIN
Digital Logic Levels (TTL Levels)
Input LOW level
VIL
Input HIGH level
Output LOW
Output HIGH
DAC Output (Load = 10kΩ 50pF)
VIH
VOL
VOH
IOL = 2mA
IOH = 2mA
2
0.9 x VDD
0dBFS Full scale output voltage
At DAC outputs
SNR (Note 1,2)
SNR (Note 1,2)
SNR (Note 1,2)
SNR (Note 1,2)
SNR (Note 1,2)
SNR (Note 1,2)
THD
Dynamic range (Note 2)
Analogue Output Levels
Output level
Gain mismatch
channel-to-channel
Minimum resistance load
Maximum capacitance load
Output d.c. level
Power On Reset (POR)
POR threshold
A-weighted,
@ fs = 48kHz
A-weighted
@ fs = 96kHz
A-weighted
@ fs = 192kHz
A-weighted,
@ fs = 48kHz
VDD = 3.3V
A-weighted
@ fs = 96kHz
VDD = 3.3V
Non ‘A’ weighted @ fs
= 48kHz
1kHz, 0dBFS
1kHz, THD+N @
-60dBFs
Load = 10kΩ, 0dBFS
Load = 10kΩ, 0dBFS,
(VDD = 3.3V)
90
To midrail or a.c.
coupled
To midrail or a.c.
coupled
(VDD = 3.3V)
5V or 3.3V
TYP
1.2 x
VDD/5
98
95
92
95
95
92
-84
98
1.2
0.79
±1
1
1
100
VDD/2
1.8
MAX
0.8
0.10 x VDD
UNIT
V
V
V
V
Vrms
dB
dB
dB
dB
dB
dB
dB
dB
VRMS
VRMS
%FSR
kΩ
kΩ
pF
V
V
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PD Rev 4.2 July 2006
5
5 Page 
WM8762
TYPICAL PERFORMANCE
Production Data
-65
-70
-75
-80
-85
d
B -90
r
-95
B
-100
-105
-110
-115
-120
-160 -150 -140 -130 -120 -110 -100
-90
-80
-70
-60
-50
-40
-30
-20
-10 +0
dBFS
Figure 8 WM8762 Functionality THD+N VDD = 5V
-70
-72.5
-75
-77.5
-80
-82.5
-85
-87.5
-90
d
B -92.5
r -95
B -97.5
-100
-102.5
-105
-107.5
-110
-112.5
-115
-117.5
-120
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10 +0
dBFS
Figure 9 WM8762 Functionality THD+N VDD = 3V
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PD Rev 4.2 July 2006
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet WM8762.PDF ] | |
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