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WM8737GEFL PDF даташит

Спецификация WM8737GEFL изготовлена ​​​​«Wolfson Microelectronics plc» и имеет функцию, называемую «STEREO ADC WITH MICROPHONE PREAMPLIFIER».

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Номер произв WM8737GEFL
Описание STEREO ADC WITH MICROPHONE PREAMPLIFIER
Производители Wolfson Microelectronics plc
логотип Wolfson Microelectronics plc логотип 

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WM8737GEFL Даташит, Описание, Даташиты
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WM8737L
Stereo ADC with Microphone Preamplifier
DESCRIPTION
The WM8737L is a low power stereo audio ADC designed
specifically for portable applications such as minidisc and
memory audio / voice recorders.
The device offers three sets of stereo inputs, which can be
configured for line-level signals, for internal or table-top
microphones, or for DC measurement (battery monitor). A
programmable gain amplifier can be used for automatic
level control (ALC) with user programmable hold, attack and
decay times. The device also has a selectable high pass
filter to remove residual DC offsets.
If the signal source is mono, the WM8737L can run in mono
mode, saving power. It can also mix two channels to mono,
either in the analogue or the digital domain.
Master or slave mode clocking schemes are offered. Stereo
24-bit multi-bit sigma-delta ADCs are used with digital audio
output word lengths from 16-32 bits, and sampling rates
from 8kHz to 96kHz supported.
The device is controlled via a 2 or 3 wire serial interface.
The interface provides access to all features including gain
controls, analogue or digital mono mixing, and power
management facilities. The device is supplied in a leadless
5x5mm QFN package.
FEATURES
SNR 97dB (‘A’ weighted @ 3.3V, 48kHz, normal power
mode)
THD –85dB (at –1dB, 3.3V, normal power mode)
Complete Stereo / Mono Microphone Interface
- Programmable microphone preamp
- Automatic Level Control
- Low-noise microphone bias voltage
Configurable Power / Performance
Low Power Mode
- 8.5mW at AVDD = 1.8V (stereo, mic preamps off)
- 20mW at AVDD = 3.3V (stereo, mic preamps off)
Low Supply Voltages
- Analogue 1.8V to 3.6V
- Digital core: 1.42V to 3.6V
- Digital I/O: 1.8V to 3.6V
256fs / 384fs or USB master clock rates: 12MHz, 24MHz
Audio sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1,
48, 88.2, 96kHz generated internally from master clock
32-pin QFN package, 5 x 5 x 0.9mm
APPLICATIONS
Memory Audio / Voice Recorders
Minidisc Recorders
Portable Digital Music Systems
BLOCK DIAGRAM
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Advanced Information, May 2004, Rev 3.0
Copyright 2004 Wolfson Microelectronics plc









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WM8737GEFL Даташит, Описание, Даташиты
WM8737L
TABLE OF CONTENTS
Preliminary Technical Data
DESCRIPTION .......................................................................................................1
FEATURES.............................................................................................................1
APPLICATIONS .....................................................................................................1
BLOCK DIAGRAM .................................................................................................1
TABLE OF CONTENTS .........................................................................................2
PIN CONFIGURATION...........................................................................................3
ORDERING INFORMATION ..................................................................................3
PIN DESCRIPTION ................................................................................................4
ABSOLUTE MAXIMUM RATINGS.........................................................................5
RECOMMENDED OPERATING CONDITIONS .....................................................5
ELECTRICAL CHARACTERISTICS ......................................................................6
TERMINOLOGY............................................................................................................. 8
NOTES........................................................................................................................... 8
POWER CONSUMPTION ......................................................................................9
SIGNAL TIMING REQUIREMENTS .....................................................................11
DEVICE DESCRIPTION.......................................................................................14
INTRODUCTION.......................................................................................................... 14
INPUT SIGNAL PATH.................................................................................................. 14
ANALOGUE TO DIGITAL CONVERTER (ADC) .......................................................... 19
3D STEREO ENHANCEMENT..................................................................................... 20
AUTOMATIC LEVEL CONTROL (ALC) ....................................................................... 21
DIGITAL AUDIO INTERFACE...................................................................................... 24
MASTER CLOCK AND AUDIO SAMPLE RATES ........................................................ 28
CONTROL INTERFACE .............................................................................................. 30
POWER SUPPLIES ..................................................................................................... 31
POWER MANAGEMENT ............................................................................................. 31
REGISTER MAP...................................................................................................32
DIGITAL FILTER CHARACTERISTICS ...............................................................33
TERMINOLOGY........................................................................................................... 33
APPLICATIONS INFORMATION .........................................................................35
LINE INPUT CONFIGURATION................................................................................... 35
MICROPHONE INPUT CONFIGURATION .................................................................. 35
RECOMMENDED EXTERNAL COMPONENTS ..................................................36
PACKAGE DIMENSIONS ....................................................................................37
IMPORTANT NOTICE ..........................................................................................38
ADDRESS:................................................................................................................... 38
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AI Rev 3.0 May 2004
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WM8737GEFL Даташит, Описание, Даташиты
Preliminary Technical Data
PIN CONFIGURATION
WM8737L
ORDERING INFORMATION
ORDER CODE
TEMPERATURE RANGE
WM8737LGEFL
-25°C to +85°C
WM8737LGEFL/R
-25°C to +85°C
Note:
Reel Quantity = 3,500
PACKAGE
32-pin QFN (5x5x0.9mm)
lead free
32-pin QFN (5x5x0.9mm)
lead free, tape
and reel
MOISTURE SENSITIVITY
LEVEL
MSL1
MSL1
PEAK SOLDERING
TEMPERATURE
260°C
260°C
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AI Rev 3.0 May 2004
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Номер в каталогеОписаниеПроизводители
WM8737GEFLSTEREO ADC WITH MICROPHONE PREAMPLIFIERWolfson Microelectronics plc
Wolfson Microelectronics plc

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