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PDF WM8973L Data sheet ( Hoja de datos )
| Número de pieza | WM8973L | |
| Descripción | Stereo CODEC | |
| Fabricantes | Wolfson Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de WM8973L (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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WM8973L
Stereo CODEC for Portable Audio Applications
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 amplifiers are required.
Advanced on-chip digital signal processing performs graphic
equaliser, 3-D sound enhancement and automatic level
control for the microphone or line input.
The WM8973L can operate as a master or a slave, with
various master clock frequencies including 12 or 24MHz for
USB devices, or standard 256fs 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
WOLFSON MICROELECTRONICS plc
To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews
Production Data, December 2011, Rev 4.5
Copyright 2011 Wolfson Microelectronics plc
1 page  
Production Data
PIN CONFIGURATION
WM8973L
ORDERING INFORMATION
ORDER CODE
WM8973CLGEFL/V
WM8973CLGEFL/RV
Note:
Reel quantity = 3500
TEMPERATURE
RANGE
-25C to +85C
-25C to +85C
PACKAGE
32-lead QFN (5x5x0.9mm)
(Pb-free)
32-lead QFN (5x5x0.9mm)
(Pb-free, tape and reel)
MOISTURE
PEAK SOLDERING
SENSITIVITY LEVEL TEMPERATURE
MSL3
260oC
MSL3
260oC
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PD, Rev 4.5, December 2011
5
5 Page 
Production Data
HEADPHONE OUTPUT THD VERSUS POWER
WM8973L
0
-20
-40
-60
-80
-100
0
Headphone Pow er vs THD+N (32Ohm load)
5 10 15 20 25
Pow er (m W)
AVDD=1.8V
AVDD=1.8V, capless
AVDD=3.3V
AVDD=3.3V, capless
30
0
-20
-40
-60
-80
-100
0
Headphone Pow er vs THD+N (16Ohm load)
AVDD=1.8V
AVDD=1.8V, capless
AVDD=3.3V
AVDD=3.3V, capless
10 20 30 40 50 60
Pow er (m W)
w
PD, Rev 4.5, December 2011
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet WM8973L.PDF ] | |
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