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參數(shù)資料
| 型號(hào)： | WM8737L |
| 廠(chǎng)商： | Wolfson Microelectronics |
| 英文描述： | STEREO ADC WITH MICROPHONE PREAMPLIFIER |
| 中文描述： | 立體聲ADC，具有麥克風(fēng)前置放大器 |
| 文件頁(yè)數(shù)： | 1/38頁(yè) |
| 文件大小： | 535K |
| 代理商： | WM8737L |
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Stereo ADC with Microphone Preamplifier
WM8737L
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Advanced Information, May 2004, Rev 3.0
Copyright
2004 Wolfson Microelectronics plc
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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| WM8737GEFL | STEREO ADC WITH MICROPHONE PREAMPLIFIER |
| WM8738 | 24 BIT STEREO ADC |
| WM8738ED | 24 BIT STEREO ADC |
| WM8738EDR | 24 BIT STEREO ADC |
| WM8738GED | 24 BIT STEREO ADC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| WM8737LGEFL | 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC Stero ADC Lo Pwr with Mic preamp RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝: |
| WM8737LGEFL/R | 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC Stero ADC Lo Pwr with Mic preamp RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝: |
| WM8738 | 制造商:WOLFSON 制造商全稱(chēng):WOLFSON 功能描述:Stereo ADC |
| WM8738_06 | 制造商:WOLFSON 制造商全稱(chēng):WOLFSON 功能描述:24 Bit Stereo ADC |
| WM8738CGED | 制造商:Wolfson Microelectronics 功能描述:24-Bit Stereo ADC. SOIC14 |
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