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參數資料
| 型號： | WM8973 |
| 廠商： | Wolfson Microelectronics |
| 元件分類： | Codec |
| 英文描述： | STEREO CODEC FOR PORTABLE AUDIO APPLICATIONS |
| 中文描述： | 立體聲編解碼器的便攜式音頻應用 |
| 文件頁數： | 1/57頁 |
| 文件大小： | 639K |
| 代理商： | WM8973 |
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Stereo CODEC for Portable Audio Applications
WM8973L
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Advanced Information, July 2004, Rev 3.2
Copyright
2004 Wolfson Microelectronics plc
DESCRIPTION
The WM8973L is a low power, high quality stereo CODEC
designed for portable digital audio applications.
The device integrates complete interfaces to stereo or mono
microphones and a stereo headphone. External component
requirements are drastically reduced as no separate
microphone
or
headphone
Advanced on-chip digital signal processing performs
graphic equaliser, 3-D sound enhancement and automatic
level control for the microphone or line input.
amplifiers
are
required.
The WM8973L can operate as a master or a slave, with
various master clock frequencies including 12 or 24MHz for
USB devices, or standard 256f
s
rates like 12.288MHz and
24.576MHz. Different audio sample rates such as 96kHz,
48kHz, 44.1kHz are generated directly from the master
clock without the need for an external PLL.
The WM8973L operates at supply voltages down to 1.8V,
although the digital core can operate at voltages down to
1.42V to save power, and the maximum for all supplies is
3.6 Volts. Different sections of the chip can also be powered
down under software control.
The WM8973L is supplied in a very small and thin 5x5mm
QFN package, ideal for use in hand-held and portable
systems.
FEATURES
DAC SNR 98dB (‘A’ weighted), THD –84dB at 48kHz, 3.3V
ADC SNR 95dB (‘A’ weighted), THD -82dB at 48kHz, 3.3V
Complete Stereo / Mono Microphone Interface
- Programmable ALC / Noise Gate
On-chip 400mW BTL Speaker Driver (mono)
On-chip Headphone Driver
-
>40mW output power on 16
/ 3.3V
-
THD –80dB at 20mW, SNR 90dB with 16
load
-
No DC blocking capacitors required (capless mode)
Separately mixed mono output
Digital Graphic Equaliser
Low Power
-
7mW stereo playback (1.8V / 1.5V supplies)
-
14mW record & playback (1.8V / 1.5V supplies)
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, 16, 22.05, 24, 32, 44.1, 48,
88.2, 96kHz generated internally from master clock
5x5x0.9mm QFN package
APPLICATIONS
MP3 Player / Recorder
AAC/WMA/Multi-Format Player / Recorder
Minidisc Player / Recorder
Portable Digital Music Systems
BLOCK DIAGRAM
相關PDF資料 |
PDF描述 |
|---|---|
| WM8974 | 2-WIRE CHOPPER STABILIZED LATCH |
| WM8974GEFL | 2-WIRE CHOPPER STABILIZED LATCH |
| WM8978 | STEREO CODEC WITH SPEAKER DRIVER |
| WM8978GEFL | STEREO CODEC WITH SPEAKER DRIVER |
| WM8983GEFL | Mobile Multimedia CODEC with 1W Speaker Driver |
相關代理商/技術參數 |
參數描述 |
|---|---|
| WM8973_05 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Stereo CODEC for Portable Audio Applications |
| WM8973CLGEFL/RV | 制造商:Wolfson Microelectronics 功能描述:Stereo Codec w H/P |
| WM8973CLGEFL/V | 制造商:Wolfson Microelectronics 功能描述:Stereo Codec w H/P |
| WM8973LGEFL | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:STEREO CODEC FOR PORTABLE AUDIO APPLICATIONS |
| WM8973LGEFL/RV | 功能描述:接口—CODEC Stereo Codec with H/P Spkr RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
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