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WM8980, WM8980G, WM8980GEFL

Table of contents:
Info of WM8980
Info of WM8980G
Info of WM8980GEFL

WM8980, WM8980G, WM8980GEFL Selling Leads, Datasheet

MFG:WOLFSON Package Cooled:1000 D/C:04+

WM8980, WM8980G, WM8980GEFL Datasheet download

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Part Number: WM8980

MFG: WOLFSON

Package Cooled: 1000

D/C: 04+

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WM8980 General Description

The WM8980 is a low power, high quality stereo codec withintegrated video buffer designed for portable applications suchas Digital still camera or Digital Camcorder.

The device integrates preamps for stereo differential mics, andincludes drivers for speakers, headphone and differential orstereo line output. External component requirements arereduced as no separate microphone or headphone amplifiersare required.

An integrated video buffer is provided which has programmablegain from 0-6dB, sync-tip clamp and a 3rd order input low passfilter for signal re-construction.

Advanced on-chip digital signal processing includes a 5-bandequaliser, a mixed signal Automatic Level Control for themicrophone or line input through the ADC as well as a purelydigital limiter function for record or playback. Additional digitalfiltering options are available in the ADC path, to cater forapplication filtering such as 'wind noise reduction'.

The WM8980 CODEC can operate as a master or a slave. Aninternal PLL can generate all required audio clocks for theCodec from common reference clock frequencies, such as12MHz and 13MHz.

The WM8980 operates at analogue supply voltages from 2.5Vto 3.3V, although the digital core can operate at voltages downto 1.62V to save power. The speaker outputs and OUT3/4 lineoutputs can run from a 5V supply if increased output power isrequired. Individual sections of the chip can also be powereddown under software control.

WM8980 Maximum Ratings

CONDITION	MIN	MAX
DBVDD, DCVDD, AVDD supply voltages	-0.3V	+3.63V
SPKVDD supply voltage	-0.3V	+7V
Voltage range digital inputs	DGND -0.3V	DVDD +0.3V
Voltage range analogue inputs	AGND -0.3V	AVDD +0.3V
Operating temperature range, T_A	-25°C	+85°C
Storage temperature after soldering	-65°C	+150°C

WM8980 Features

• Stereo Codec:
• DAC SNR 98dB, THD -84dB ('A' weighted @ 48kHz)
• ADC SNR 90dB, THD -80dB ('A' weighted @ 48kHz)
• On-chip Headphone Driver with 'capless' option- 40mW output power into 16 / 3.3V SPKVDD
• 0.9W output power into 8 BTL speaker / 5V SPKVDD- Capable of driving piezo speakers- Stereo speaker drive configuration
• Mic Preamps:
• Stereo Differential or mono microphone Interfaces- Programmable preamp gain- Psuedo differential inputs with common mode rejection- Programmable ALC / Noise Gate in ADC path
• Low-noise bias supplied for electret microphones
• Other features:
• Integrated 0-6dB video buffer with LPF filter and clamp.
• Enhanced 3-D function for improved stereo separation
• Digital playback limiter
• 5-band Equaliser (record or playback)
• Programmable ADC High Pass Filter (wind noise reduction)
• Programmable ADC Notch Filter
• Aux inputs for stereo analog input signals or 'beep'
• On-chip PLL supporting 12, 13, 19.2MHz and other clocks
• Low power, low voltage- 2.5V to 3.6V (digital core: 1.62V to 3.6V)- power consumption <30mW all-on with 2.5V supplies
• 6x6mm 40-pin QFN package

WM8980 Typical Application

• Stereo Camcorder or DSC

WM8980 Connection Diagram

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