WM8978GEFL

Features: Stereo CODEC:• DAC SNR 98dB, THD -84dB ('A' weighted @ 48kHz)• ADC SNR 95dB, THD -84dB ('A' weighted @ 48kHz)• On-chip Headphone Driver with 'capless' option- 40mW per channel into 16 / 3.3V SPKVDD• 0.9W output power into 8 BTL speaker / 5V SPKVDD- Capable of driv...

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SeekIC No. : 004546237 Detail

WM8978GEFL: Features: Stereo CODEC:• DAC SNR 98dB, THD -84dB ('A' weighted @ 48kHz)• ADC SNR 95dB, THD -84dB ('A' weighted @ 48kHz)• On-chip Headphone Driver with 'capless' option- 40mW per ch...

floor Price/Ceiling Price

Part Number:
WM8978GEFL
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/3/28

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Product Details

Description



Features:

Stereo CODEC:
• DAC SNR 98dB, THD -84dB ('A' weighted @ 48kHz)
• ADC SNR 95dB, THD -84dB ('A' weighted @ 48kHz)
• On-chip Headphone Driver with 'capless' option
- 40mW per channel 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:
• 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
• Support for 8, 11.025, 12, 16, 22.05, 24, 32, 44.1 and 48kHz sample rates
• Low power, low voltage
- 2.5V to 3.6V (digital: 1.71V to 3.6V)
• 5x5mm 32-lead QFN package


The above info is from (www.seekic.com)


Application

• Stereo Camcorder or DSC
• Multimedia Phone



Pinout

  Connection Diagram


Specifications

CONDITION MIN MAX
DBVDD, DCVDD, AVDD supply voltages -0.3V +4.5V
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, TA -25 +85
Storage temperature after soldering -65 +150
Notes:
1. Analogue and digital grounds must always be within 0.3V of each other.
2. All digital and analogue supplies are completely independent from each other.
3. Analogue supply has to be to digital.
4. In non-boosted mode, SPKVDD should = AVDD, if boosted SPKVDD should be 1.5x AVDD.
5. When using PLL, DCVDD should be 1.9V.
6. DBVDD must be greater than or equal to DCVDD.


Edited by (www.seekic.com) ,the biggest IC PDF and datasheet download site.


Description

The WM8978GEFL is a low power, high quality stereo CODEC designed for portable applications such as multimedia phone,digital still camera or digital camcorder.

The WM8978GEFL integrates preamps for stereo differential mics, and includes drivers for speakers, headphone and differential or stereo line output. External component requirements are reduced as no separate microphone or headphone amplifiers are required.

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

The WM8978GEFL digital audio interface can operate as a master or a slave. An internal PLL can generate all required audio clocks for the CODEC from common reference clock frequencies, such as 12MHz and 13MHz.

The WM8978GEFL operates at analogue supply voltages from 2.5V to 3.3V, although the digital core can operate at voltages down to 1.71V to save power. The speaker outputs and OUT3/4 line outputs can run from a 5V supply if increased output power is required. Individual sections of the chip can also be powered down under software control.



The above info is from (www.seekic.com)


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