WM8973 Wolfson Microelectronics Ltd., WM8973 Datasheet

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WM8973

Manufacturer Part Number
WM8973
Description
The WM8976 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
Manufacturer
Wolfson Microelectronics Ltd.
Datasheet

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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
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 256f
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.
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Stereo CODEC for Portable Audio Applications
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rates like 12.288MHz and
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are
required.
FEATURES
APPLICATIONS
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
On-chip 400mW BTL Speaker Driver (mono)
On-chip Headphone Driver
-
-
-
Separately mixed mono output
Digital Graphic Equaliser
Low Power
-
-
Low Supply Voltages
-
-
-
256fs / 384fs or USB master clock rates: 12MHz, 24MHz
Audio sample rates: 8, 11.025, 16, 22.05, 24, 32, 44.1, 48,
5x5x0.9mm QFN package
MP3 Player / Recorder
AAC/WMA/Multi-Format Player / Recorder
Minidisc Player / Recorder
Portable Digital Music Systems
-
88.2, 96kHz generated internally from master clock
Programmable ALC / Noise Gate
>40mW output power on 16
THD –80dB at 20mW, SNR 90dB with 16
No DC blocking capacitors required (capless mode)
7mW stereo playback (1.8V / 1.5V supplies)
14mW record & playback (1.8V / 1.5V supplies)
Analogue 1.8V to 3.6V
Digital core: 1.42V to 3.6V
Digital I/O: 1.8V to 3.6V
Production Data, September 2005, Rev 4.2
Copyright
2005 Wolfson Microelectronics plc
WM8973L
/ 3.3V
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