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參數(shù)資料
| 型號(hào)： | WM8950 |
| 廠商： | Wolfson Microelectronics |
| 元件分類(lèi)： | ADC |
| 英文描述： | ADC WITH MICROPHONE INPUT AND PROGRAMMABLE DIGITAL FILTERS |
| 中文描述： | ADC，具有麥克風(fēng)輸入和可編程數(shù)字濾波器 |
| 文件頁(yè)數(shù)： | 1/52頁(yè) |
| 文件大?。?/td> | 669K |
| 代理商： | WM8950 |
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ADC with Microphone Input and Programmable Digital Filters
WM8950
WOLFSON MICROELECTRONICS plc
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http://www.wolfsonmicro.com/enews/Preliminary Technical Data, June 2005, Rev 2.1
Copyright
2005 Wolfson Microelectronics plc
DESCRIPTION
The WM8950 is a low power, high quality mono ADC designed
for portable applications such as Digital Still Camera, Digital
Voice Recorder or games console accessories.
The device integrates support for a differential or single ended
mic. External component requirements are reduced as no
separate microphone amplifiers are required.
Advanced Sigma Delta Converters are used along with digital
decimation filters to give high quality audio at sample rates
from 8 to 48ks/s. Additional digital filtering options are
available, to cater for application filtering such as wind noise
reduction, noise rejection, plus an advanced mixed signal ALC
function with noise gate is provided.
An on-chip PLL is provided to generate the required Master
Clock from an external reference clock. The PLL clock can
also be output if required elsewhere in the system.
The WM8950 operates at supply voltages from 2.5 to 3.6V,
although the digital supplies can operate at voltages down to
1.71V to save power. Different sections of the chip can also be
powered down under software control by way of the selectable
two or three wire control interface.
WM8950 is supplied in a very small 4x4mm QFN package,
offering high levels of functionality in minimum board area,
with high thermal performance.
FEATURES
Mono ADC:
Audio sample rates:8, 11.025, 16, 22.05, 24, 32, 44.1, 48kHz
SNR 95dB, THD -85dB (‘A’-weighted @ 8 – 48ks/s)
Multiple auxiliary analog inputs
Mic Preamps:
Differential or single end Microphone Interface
- Programmable preamp gain
- Psuedo differential inputs with common mode rejection
- Programmable ALC / Noise Gate in ADC path
Low-noise bias supplied for electret microphones
OTHER FEATURES
5 band EQ
Programmable High Pass Filter (wind noise reduction)
Fully Programmable IIR Filter (notch filter)
On-chip PLL
Low power, low voltage
- 2.5V to 3.6V (digital: 1.71V to 3.6V)
- power consumption TBD all-on 48ks/s mode
4x4x0.9mm 24 pin QFN package
APPLICATIONS
Digital Still Camera
General Purpose low power audio ADC
Games console accessories
Voice recorders
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| WM8971LEFL | STEREO CODEC FOR PORTABLE AUDIO APPLLICATIONS |
| WM8971LGEFL | STEREO CODEC FOR PORTABLE AUDIO APPLLICATIONS |
| WM8971L | STEREO CODEC FOR PORTABLE AUDIO APPLLICATIONS |
| WM8972L | MONO CODEC FOR PORTABLE AUDIO APPLICATIONS |
| WM8972LEFL | MONO CODEC FOR PORTABLE AUDIO APPLICATIONS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| WM8950-6140-QFN24-EV1 | 功能描述:音頻 IC 開(kāi)發(fā)工具 Evaluation Board for WM8950 ADC RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類(lèi)型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
| WM8950-6162-FL24-M-S | 制造商:Wolfson Microelectronics 功能描述:Full Evaluation System |
| WM8950CGEFL/V | 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC ADC with Mono MIC INPUT 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: |
| WM8950GEFL/RV | 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC ADC with Mono MIC Input 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: |
| WM8950GEFL/V | 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC ADC with Mono MIC Input 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: |
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