WM8727 PDF даташит
Спецификация WM8727 изготовлена «Wolfson Microelectronics» и имеет функцию, называемую «24-bit 192kHz Stereo DAC». |
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Детали детали
Номер произв | WM8727 |
Описание | 24-bit 192kHz Stereo DAC |
Производители | Wolfson Microelectronics |
логотип |
16 Pages
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24-bit 192kHz Stereo DAC
WM8727
DESCRIPTION
The WM8727 is a high performance stereo DAC designed
for audio applications such as DVD, home theatre systems,
and digital TV. The WM8727 supports data input word
lengths from 16 to 24-bits and sampling rates up to 192kHz.
The WM8727 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 WM8727 supports a 16-24-bit I2S digital audio
interface.
The WM8727 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) DAC
- -84dB THD
• DAC Sampling Frequency: 8kHz – 192kHz
• Audio Data Interface Format
- 16-24-Bit I2S
• 2.7V – 5.5V Supply Operation
• 8-pin SOIC Package
• Exceeds Dolby Class A Performance Requirements
APPLICATIONS
• DVD Players
• Digital TV
• Digital Set Top Box
BLOCK DIAGRAM
BCKIN
LRCIN
DIN
SERIAL
INTERFACE
MUTE
MUTE
DIGITAL FILTERS
SIGMA
DELTA
MODULATOR
SIGMA
DELTA
MODULATOR
RIGHT
DAC
LOW
PASS
FILTER
VOUTR
LEFT
DAC
LOW
PASS
FILTER
VOUTL
W
WM8727
MCLK
VDD GND
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Production Data, April 2004, Rev 4.1
Copyright 2004 Wolfson Microelectronics plc
No Preview Available ! |
WM8727
TABLE OF CONTENTS
Production Data
DESCRIPTION ............................................................................................................1
FEATURES..................................................................................................................1
APPLICATIONS ..........................................................................................................1
BLOCK DIAGRAM ......................................................................................................1
TABLE OF CONTENTS ..............................................................................................2
PIN CONFIGURATION................................................................................................3
ORDERING INFORMATION .......................................................................................3
PIN DESCRIPTION .....................................................................................................3
ABSOLUTE MAXIMUM RATINGS..............................................................................4
DC ELECTRICAL CHARACTERISTICS .....................................................................4
ELECTRICAL CHARACTERISTICS ...........................................................................5
TERMINOLOGY ................................................................................................................. 6
MASTER CLOCK TIMING .................................................................................................. 6
DIGITAL AUDIO INTERFACE ............................................................................................ 6
DEVICE DESCRIPTION..............................................................................................8
GENERAL INTRODUCTION .............................................................................................. 8
DAC CIRCUIT DESCRIPTION ........................................................................................... 8
CLOCKING SCHEMES ...................................................................................................... 9
DIGITAL AUDIO INTERFACE ............................................................................................ 9
AUDIO DATA SAMPLING RATES.....................................................................................10
DIGITAL FILTER CHARACTERISTICS ....................................................................11
DAC FILTER RESPONSES...............................................................................................11
TYPICAL PERFORMANCE.......................................................................................12
APPLICATIONS INFORMATION ..............................................................................13
RECOMMENDED EXTERNAL COMPONENTS ................................................................13
RECOMMENDED EXTERNAL COMPONENTS VALUES .................................................13
RECOMMENDED ANALOGUE LOW PASS FILTER (OPTIONAL) ...................................14
PCB LAYOUT RECOMMENDATIONS ..............................................................................14
PACKAGE DRAWING...............................................................................................15
IMPORTANT NOTICE ...............................................................................................16
ADDRESS: ........................................................................................................................16
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PD Rev 4.1 April 2004
2
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WM8727
PIN CONFIGURATION
DIN
BCKIN
LRCIN
MCLK
18
27
WM8727
36
45
VOUTL
VDD
GND
VOUTR
Production Data
ORDERING INFORMATION
DEVICE
WM8727ED
WM8727ED/R
TEMPERATURE
RANGE
-25 to +85oC
-25 to +85oC
WM8727GED/V
-25 to +85oC
WM8727GED/RV
-25 to +85oC
Note:
Reel Quantity = 3,000
PACKAGE
8-pin SOIC
8-pin SOIC
(tape and reel)
8-pin SOIC
(lead free)
8-pin SOIC
(lead free, tape and reel)
MOISTURE
SENSITIVITY LEVEL
MSL1
MSL1
MSL2
MSL2
PEAK SOLDERING
TEMPERATURE
240oC
240oC
260oC
260oC
PIN DESCRIPTION
PIN NAME
1 DIN
2 BCKIN
3 LRCIN
4 MCLK
5 VOUTR
6 GND
7 VDD
8 VOUTL
TYPE
Digital input
Digital input
Digital input
Digital input
Analogue output
Supply
Supply
Analogue output
Note:
Digital input pins have Schmitt trigger input buffers.
DESCRIPTION
Serial audio data input
Bit clock input
Sample rate clock input
System clock input
Right channel DAC output
Analogue ground supply
Positive supply
Left channel DAC output
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PD Rev 4.1 April 2004
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