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WM8960_06 Datasheet (HTML) - Wolfson Microelectronics plc

Part No. WM8960_06
Description  Stereo CODEC with 1W Stereo Class D Speaker Drivers and Headphone Drivers for Portable Audio Applications
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Maker  WOLFSON [Wolfson Microelectronics plc]
Homepage  http://www.wolfsonmicro.com
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WM8960
Stereo CODEC with 1W Stereo Class D Speaker Drivers and
Headphone Drivers for Portable Audio Applications
WOLFSON MICROELECTRONICS plc
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Preliminary Technical Data, September 2006, Rev 2.0
Copyright
2006 Wolfson Microelectronics plc
DESCRIPTION
The WM8960 is a low power, high quality stereo codec
designed for portable digital audio applications.
Stereo class D speaker drivers provide 1W per channel into 8
loads with a 5V supply. Low leakage, excellent PSRR and
pop/click suppression mechanisms also allow direct battery
connection to the speaker supply. Flexible speaker boost
settings allow speaker output power to be maximised while
minimising other analogue supply currents.
A highly flexible input configuration for up to three stereo
sources is integrated, with a complete microphone interface.
External component requirements are drastically reduced as no
separate microphone, speaker or headphone amplifiers are
required. Advanced on-chip digital signal processing performs
automatic level control for the microphone or line input.
Stereo 24-bit sigma-delta ADCs and DACs are used with low
power over-sampling digital interpolation and decimation filters
and a flexible digital audio interface.
The master clock can be input directly or generated internally by
an onboard PLL, supporting most commonly-used clocking
schemes.
The WM8960 operates at analogue supply voltages down to
2.7V, although the digital supplies can operate at voltages down
to 1.71V to save power. The speaker supply can operate at up
to 5.5V, providing 1W per channel into 8
Ω loads. Unused
functions can be disabled using software control to save power.
The WM8960 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 94dB (‘A’ weighted), THD -82dB at 48kHz, 3.3V
Pop and click suppression
3D Enhancement
Stereo Class D Speaker Driver
• <0.1% THD with 1W per channel into 8Ω BTL speakers
• 70dB PSRR @217Hz
• 87% efficiency (1W output)
• Flexible internal switching clock
On-chip Headphone Driver
• 40mW output power into 16Ω at 3.3V
• Capless mode support
• THD -75dB at 20mW, SNR 90dB with 16Ω load
Microphone Interface
• Pseudo differential for high noise immunity
• Integrated low noise MICBIAS
• Programmable ALC / Limiter & Noise Gate
Low Power Consumption
• 10mW headphone playback (2.7V / 1.8V supplies)
• 20mW record and playback (2.7V / 1.8V supplies)
Low Supply Voltages
• Analogue 2.7V to 3.6V (Speaker supply up to 5.5V)
• Digital core and I/O: 1.71V to 3.6V
On-chip PLL provides flexible clocking scheme
Sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48
5x5x0.9mm QFN package
APPLICATIONS
Games consoles
Portable media / DVD players
Mobile multimedia



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