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WM8739 PDF даташит

Спецификация WM8739 изготовлена ​​​​«Wolfson Microelectronics plc» и имеет функцию, называемую «STEREO AUDIO ADC».

Детали детали

Номер произв WM8739
Описание STEREO AUDIO ADC
Производители Wolfson Microelectronics plc
логотип Wolfson Microelectronics plc логотип 

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WM8739 Даташит, Описание, Даташиты
WM8739 / WM8739L
Stereo Audio ADC
DESCRIPTION
The WM8739 is a stereo audio ADC. The WM8739 is
designed specifically for portable MP3 audio and speech
players and recorders. The WM8739 is also ideal for MD,
CD-RW machines and DAT recorders.
Stereo line-level audio inputs are provided, along with a
mute and volume function, and master or slave mode
clocking schemes. The device also has a programmable
high pass filter to remove residual DC offsets.
Stereo 24-bit multi-bit sigma delta ADCs are used with
oversampling digital interpolation and digital filters. Digital
audio output word lengths from 16-32 bits and sampling
rates from 8KHz to 96KHz are supported.
The device is controlled via a 2 or 3 wire serial interface.
The interface provides access to all features including
volume controls, mutes, de-emphasis and extensive power
management facilities. The device is available in a small 20-
pin SSOP package.
BLOCK DIAGRAM
FEATURES
90dB SNR (‘A’ weighted @ 48kHz) ADC
Low Power
- 12mW all-on, 1.4mW standby (‘L’ version)
- 41mW all-on, 5.3mW standby (standard version)
Low Supply Voltages
- 1.8 – 3.6V Analogue Supply (‘L’ version)
- 2.7 – 3.6V Analogue Supply (standard version)
- 1.42 – 3.6V Digital Supply (both versions)
Input Volume and Mute Controls
ADC Sampling Frequency: 8KHz – 96KHz
Selectable ADC High Pass Filter
2 or 3-Wire MPU Serial Control Interface
Programmable Audio Data Interface Modes
- I2S, Left, Right Justified or DSP
- 16/20/24/32 bit Word Lengths
- Master or Slave Clocking Mode
20-Pin SSOP or 5x5mm QFN Package Options
APPLICATIONS
CD, Minidisc and DAT Recorders
General Purpose Audio Digitisation
AVDD
VMID
AGND
RLINEIN
VOL/
MUTE
+12 to -34.5dB,
1.5dB Steps
LLINEIN
VOL/
MUTE
+12 to -34.5dB,
1.5dB Steps
CONTROL INTERFACE
ADC
ADC
DIGITAL
FILTERS
WM8739
ADCDAT
ADCLRC
BCLK
OSC
DIV2
WOLFSON MICROELECTRONICS LTD
www.wolfsonmicro.com
Advanced Information, September 2001, Rev 2.2
Copyright 2001 Wolfson Microelectronics Ltd.









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WM8739 Даташит, Описание, Даташиты
WM8739 / WM8739L
Advanced Information
PIN CONFIGURATION (SSOP)
ORDERING INFORMATION (SSOP)
SDIN
SCLK
XTI/MCLK
1
2
3
20 CSB
19 MODE
18 LLINEIN
DEVICE
XWM8739EDS
XWM8739LEDS
AVDD RANGE
2.7 to 3.6V
1.8 to 3.6V
PACKAGE
20-pin SSOP
20-pin SSOP
XTO
DCVDD
DGND
DBVDD
BCLK
DNC
DNC
4
5
6
7
8
9
10
17 RLINEIN
16 VMID
15 AGND
14 AVDD
13 NC
12 ADCLRC
11 ADCDAT
PIN DESCRIPTION (SSOP PACKAGE)
PIN NAME
TYPE
DESCRIPTION
1
SDIN
Digital Input
3-Wire MPU Data Input / 2-Wire MPU Data Input
2
SCLK
Digital Input
3-Wire MPU Clock Input / 2-Wire MPU Clock Input
3
XTI/MCLK
Digital Input
Crystal Input or Master Clock Input (MCLK)
4
XTO
Digital Output
Crystal Output
5 DCVDD
Supply
Digital Core VDD
6 DGND
Ground
Digital GND
7 DBVDD
Supply
Digital Buffers VDD
8
BCLK
Digital Input/Output Digital Audio Port Clock
9 DNC
Test pin
Do not connect (leave this pin floating)
10 DNC
Test pin
Do not connect (leave this pin floating)
11
ADCDAT
Digital Output
ADC Digital Audio Data Output
12
ADCLRC
Digital Input/Output ADC Sample Rate Clock
13 NC
No Internal Connection
14 AVDD
Supply
Analogue VDD
15 AGND
Ground
Analogue GND
16
VMID
Analogue Output Mid-rail reference decoupling point
17
RLINEIN
Analogue Input Right Channel Line Input (AC coupled)
18
LLINEIN
Analogue Input Left Channel Line Input (AC coupled)
19
MODE
Digital Input
Control Interface Selection, Pull up (on power up only)
20
CSB
Digital Input
3-Wire MPU Chip Select/ 2-Wire MPU interface address selection
AI Rev 2.2 September 2001
2









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WM8739 Даташит, Описание, Даташиты
WM8739 / WM8739L
Advanced Information
PIN CONFIGURATION (QFN)
ORDERING INFORMATION (QFN)
DEVICE
AVDD RANGE
PACKAGE
21 20 19 18 17 16 15
XWM8739EFL
XWM8739LEFL
2.7 to 3.6V
1.8 to 3.6V
28-pin QFN
(5x5x0.9 mm)
NC 22
14 NC
RLINEIN 23
13 NC
LLINEIN 24
12 NC
MODE 25
11 ADCLRC
CSB 26
10 ADCDAT
SDIN 27
9 DNC
SCLK 28
8 DNC
1234 567
PIN DESCRIPTION (QFN PACKAGE)
PIN
1
2
3
4
5
6
7
8, 9
10
11
12 - 17
18
19
20
21, 22
23
24
25
26
NAME
XTI/MCLK
XTO
DCVDD
DGND
DBVDD
NC
BCLK
DNC
ADCDAT
ADCLRC
NC
AVDD
AGND
VMID
NC
RLINEIN
LLINEIN
MODE
CSB
TYPE
Digital Input
Digital Output
Supply
Ground
Supply
Digital Input/Output
Test pin
Digital Output
Digital Input/Output
Supply
Ground
Analogue Output
Analogue Input
Analogue Input
Digital Input
Digital Input
DESCRIPTION
Crystal Input or Master Clock Input (MCLK)
Crystal Output
Digital Core VDD
Digital GND
Digital Buffers VDD
No Internal Connection
Digital Audio Port Clock
Do not connect (leave this pin floating)
ADC Digital Audio Data Output
ADC Sample Rate Clock
No Internal Connection
Analogue VDD
Analogue GND
Mid-rail reference decoupling point
No Internal Connection
Right Channel Line Input (AC coupled)
Left Channel Line Input (AC coupled)
Control Interface Selection, Pull up (on power up only)
3-Wire MPU Chip Select/ 2-Wire MPU interface address selection
AI Rev 2.2 September 2001
3










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