DESCRIPTION
The WM8991 is a highly integrated ultra-low power hi-fi codec designed for handsets rich in multimedia features such as mobile TV, digital audio playback and gaming. Ultra-low power and low noise interfaces to many other audio components in the system are provided.
A powerful 1W speaker driver can operate in class D or AB modes, providing total flexibility to the system designer. Low leakage, high PSRR and pop/click suppression enable direct battery connection for the speaker supply.
A very highly flexible input configuration supports multiple microphone or line inputs (mono or stereo, single-ended or differential).
Four headphone drivers support fully differential headset drive, providing excellent crosstalk performance and bass response, maximising stereo effects, and allowing the removal of large
and expensive headphone capacitors.
Stereo 24-bit sigma-delta ADCs and DACs provide hi-fi quality audio record and playback, with a flexible digital audio interface supporting most commonly-used clocking schemes. An integrated low power PLL, an alternative DAC interface and TDM support provide additional flexibility.
The WM8991 is supplied in very small and thin 5x5mm 65-ball BGA package, ideal for use in portable systems.

FEATURES
*DAC SNR 99dB (‘A’ weighted), THD -84dB at 48kHz, 3.3V
*ADC SNR 94dB (‘A’ weighted), THD -82dB at 48kHz, 3.3V
*Microphone interface (Up to four differential microphones)
*1W Speaker driver
- 1W into 8Ω BTL speaker at <0.1% THD
- 80dB PSRR @217Hz
- <1uA leakage with direct battery connection
- Software-selectable class D or AB mode
- Filterless connection supported
- Pop/Click suppression
*Headphone / ear speaker drivers
- 40mW output power into 16Ω at 3.3V
- Fully differential and capless modes supported
- Pop/Click suppression
*4 Mono or stereo differential line outputs
*Powerful GPIO functions
*Ultra-low power consumption
- 8.3mW analogue voice call
- 13.7mW DAC playback to headphones
*On-chip PLL provides flexible clocking scheme
*Sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48kHz
*65-ball 5x5mm BGA package

APPLICATIONS
*Multimedia phones
*GPS

WM8991GEB/V, WM8991GEB/RV

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DESCRIPTION
The WM8959 is an ultra-low power hi-fi DAC designed for multimedia handsets.
A powerful 1W speaker driver can operate in class D or AB modes, providing total flexibility to the system designer. Low leakage, high PSRR and pop/click suppression enable direct battery connection for the speaker supply.
A flexible input configuration supports two microphone inputs (single-ended or differential), a stereo line input, and a mono differential line input.
Four headphone drivers support fully differential headset drive, providing excellent crosstalk performance and bass response, maximising stereo effects, and allowing the removal of large and expensive headphone capacitors. The headphone outputs can also be configured to drive an ear speaker. A fully differential path to these outputs direct from the input pins is available to maximise signal quality and minimise power consumption.
Stereo 24-bit sigma-delta DACs provide hi-fi quality audio playback, with a flexible digital audio interface supporting most commonly-used clocking schemes. An integrated low power PLL provides additional flexibility.
The WM8959 is supplied in very small and thin 42-ball WCSP package, ideal for portable systems.

FEATURES
*DAC SNR 99dB (‘A’ weighted), THD -84dB at 48kHz, 3.3V
*Stereo microphone interface
*1W Speaker driver
- 1W into 8Ω BTL speaker at <0.1% THD
- 80dB PSRR @ 217Hz
- <1uA leakage with direct battery connection
- Software-selectable class D or AB mode
- Filterless connection supported
*Headphone / ear speaker drivers
- 40mW output power into 16Ω at 3.3V
- Fully differential and capless modes supported
- Low noise, lower power received voice path
*Stereo or Mono differential line output
*Pop/Click suppression
*Powerful GPIO functions
*Ultra-low power consumption
- 8.3mW analogue voice call
- 13.7mW DAC playback to headphones
*On-chip PLL provides flexible clocking scheme
*Sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48kHz
*42-ball WCSP package (3.226x3.44x0.7mm, 0.5mm pitch)

APPLICATIONS
*Multimedia phones
*GPS

WM8959ECS/RV

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