WM8993 Datasheet, PDF (1/229 Pages) Wolfson Microelectronics plc – Audio Hub CODEC for Multimedia Phones

w
WM8993
Audio Hub CODEC for Multimedia Phones
DESCRIPTION
FEATURES
The WM8993 is a highly integrated ultra-low power hi-fi CODEC
designed for portable devices such as multimedia phones.
A stereo 1W/channel speaker driver can operate in class D or
AB mode. Low leakage and high PSRR across the audio band
enable direct battery connection for the speaker supply.
Class W headphone drivers provide a dramatic reduction in
playback power and are ground-referenced. Active ground loop
noise rejection and DC offset correction help prevent pop noise
and ground noise from degrading headphone output quality.
Powerful mixing capability allows the device to support a huge
range of architectures and use cases. A highly flexible input
configuration supports multiple microphone or line inputs (mono
or stereo, single-ended or differential).
Fully differential internal architecture and on-chip RF noise
filters ensure a very high degree of noise immunity.
ReTune^TM Mobile parametric EQ with fully programmable
coefficients is integrated for optimization of speaker
characteristics. Programmable dynamic range control is also
available for maximizing loudness, protecting speakers from
clipping and preventing premature shutdown due to battery
droop.
The WM8993 is supplied in very small and thin 48-ball W-CSP
package, ideal for portable systems.
• 100dB SNR during DAC playback (‘A’ weighted)
• Low power, low noise MIC interface
• Class D or AB stereo speaker driver
- Stereo1W into 8Ω BTL speaker at <1% THD
- Mono 2W into 4Ω BTL speaker
• ReTune^TM Mobile parametric equalizer
• Dynamic range controller
• Low power Class W headphone drivers
- Integrated charge pump and DC offset correction
- 5mW total power for DAC playback to headphones
• Digital audio interface
- All standard data formats and 2-channel TDM supported
- All standard sample rates from 8kHz to 48kHz
• Low power FLL
- Provides all necessary internal clocks
- 32kHz to 27MHz input frequency
- Free-running mode for class D and charge pump
• 4 highly flexible line outputs (single-ended or differential )
• Dedicated earpiece driver
• “Direct voice” and “Direct DAC” paths to outputs
- Low noise paths bypass all internal mixers
- Low power consumption
• Active noise reduction
- DC offset correction removes pops and clicks
- Ground loop noise cancellation
• 48-ball W-CSP package (3.64x3.54x0.7mm, 0.5mm pitch)
APPLICATIONS
• Multimedia phones
WOLFSON MICROELECTRONICS plc
To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews
Production Data, November 2010, Rev 4.0
Copyright ©2010 Wolfson Microelectronics plc