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24-Bit Codec 4 ADC/8 DAC with PLL, 192 KHz

Model: AD1938

  • PLL generated or direct master clock
  • Low EMI design
  • 108 dB DAC/107 dB ADC dynamic range and SNR
  • -94 dB THD + N
  • Linux Driver
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The AD1938 is a high performance, single-chip codec that pro-vides four analog-to-digital converters (ADCs) with input and eight digital-to-analog converters (DACs) with single-ended output. An SPI port is included, allowing a microcontroller to adjust volume and many other parameters. The AD1938 operates from 3.3 V digital and analog supplies. The AD1938 is available in a 48-lead (single-ended output) LQFP package. Other members of this family include a diffe-rential DAC output and I2C® control port version. The AD1938 is designed for low EMI. This consideration is apparent in both the system and circuit design architectures. By using the on-board PLL to derive the master clock from the LR clock or from an external crystal, the AD1938 eliminates the need for a separate high frequency master clock and can also be used with a suppressed bit clock. The DACs and ADCs are designed using the latest Analog Devices continuous time architectures to further minimize EMI. By using 3.3 V supplies, power consumption is minimized, further reducing emissions.
  • PLL generated or direct master clock
  • Low EMI design
  • 108 dB DAC/107 dB ADC dynamic range and SNR
  • -94 dB THD + N
  • Linux Driver
  • 3.3 V single supply
  • Tolerance for 5 V logic inputs
  • Supports 24 bits and 8 kHz to 192 kHz sample rates
  • Applications include Automotive audio systems, Home Theater Systems, Set-top boxes, Digital audio effects processors
  • Available in Tray and Reel package
 
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