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參數(shù)資料
型號(hào)： WM8971L
廠商： Wolfson Microelectronics
元件分類(lèi)： Codec
英文描述： STEREO CODEC FOR PORTABLE AUDIO APPLLICATIONS
中文描述： 立體聲編解碼器的便攜式音頻APPLLICATIONS
文件頁(yè)數(shù)： 1/56頁(yè)
文件大小： 622K
代理商： WM8971L
w
Stereo CODEC for Portable Audio Applications
WM8971L
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Advanced Information, March 2004, Rev 3.0
Copyright
2004 Wolfson Microelectronics plc
DESCRIPTION
The WM8971L 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, and automatic level control for the
microphone or line input.
amplifiers
are
required.
The WM8971L 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 WM8971L 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 WM8971L 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 and 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
Digital Still Cameras
MP3 Player / Recorders
Minidisc Player / Recorders
Portable Digital Music Systems
BLOCK DIAGRAM
C
S
S
M
V
A
A
V
A
A
B
M
D
D
H
相關(guān)PDF資料
PDF描述
WM8972L MONO CODEC FOR PORTABLE AUDIO APPLICATIONS
WM8972LEFL MONO CODEC FOR PORTABLE AUDIO APPLICATIONS
WM8972LGEFL MONO CODEC FOR PORTABLE AUDIO APPLICATIONS
WM8973LGEFL STEREO CODEC FOR PORTABLE AUDIO APPLICATIONS
WM8973 STEREO CODEC FOR PORTABLE AUDIO APPLICATIONS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
WM8971L_05 制造商:WOLFSON 制造商全稱(chēng):WOLFSON 功能描述:Stereo CODEC for Portable Audio Applications
WM8971LEFL 制造商:WOLFSON 制造商全稱(chēng):WOLFSON 功能描述:STEREO CODEC FOR PORTABLE AUDIO APPLLICATIONS
WM8971LEFL/R 制造商:WOLFSON 制造商全稱(chēng):WOLFSON 功能描述:STEREO CODEC FOR PORTABLE AUDIO APPLLICATIONS
WM8971LGEFL 制造商:WOLFSON 制造商全稱(chēng):WOLFSON 功能描述:Stereo CODEC for Portable Audio Applications
WM8971LGEFL/R 制造商:WOLFSON 制造商全稱(chēng):WOLFSON 功能描述:STEREO CODEC FOR PORTABLE AUDIO APPLLICATIONS
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