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LM4921 - Low Voltage I2S 16-Bit Stereo DAC

General Description

The LM4921 combines a 16-bit resolution stereo I2S input digital-to-analog converter (DAC) with a stereo headphone audio power amplifier.

It is primarily designed for demanding applications in mobile phones and other portable communication device applications.

Key Features

  • 1.
  • 2 16-Bit Resolution Stereo DAC.
  • I2S Digital Audio Data Serial Interface.
  • SPI Serial Interface (Control Register).
  • Volume Control (32 steps; 1.5 dB Increments).
  • Up to 50mW/Channel Stereo Headphone Amplifier.
  • Zero Crossing Detection for Silent Attenuation Steps.
  • 2.6VDC to 5.0VDC Digital Supply Voltage Range.
  • 2.6VDC to 5.5VDC Analog Supply Voltage Range (See (1)).
  • Unity-Gain Stable Headphone Amplifiers.
  • Avai.

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Other Datasheets by Texas Instruments

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LM4921 www.ti.com LM4921 SNAS178E – JULY 2003 – REVISED MAY 2013 Low Voltage I2S 16-Bit Stereo DAC with Stereo Headphone Power Amplifiers and Volume Control Check for Samples: LM4921 FEATURES 1 •2 16-Bit Resolution Stereo DAC • I2S Digital Audio Data Serial Interface • SPI Serial Interface (Control Register) • Volume Control (32 steps; 1.5 dB Increments) • Up to 50mW/Channel Stereo Headphone Amplifier • Zero Crossing Detection for Silent Attenuation Steps • 2.6VDC to 5.0VDC Digital Supply Voltage Range • 2.6VDC to 5.5VDC Analog Supply Voltage Range (See (1)) • Unity-Gain Stable Headphone Amplifiers • Available in the 20-bump DSBGA Package KEY SPECIFICATIONS • PSRR at 217Hz, A/DVDD = 3V, (See Figure 1): 52dB (typ) • POUT at AVDD = 3.0V, 32Ω – < 0.05% THD: 13mW (typ) – < 0.