Overview

Features and Benefits

  • PLL-generated or direct master clock
  • Low EMI design
  • 112 dB DAC/ 107 dB ADC Dynamic Range and SNR
  • -96 dB THD+N
  • Single 3.3 V supply
  • Tolerance for 5 V logic inputs
  • Supports 24-bits and 8 kHz to 192 kHz sample rates
  • See Data Sheet for Additional Information

Product Details

The AD1937 is a high performance, single-chip codec that provides four analog-to-digital converters (ADCs) with differential input and eight digital-to-analog converters (DACs) with differential output, using the Analog Devices, Inc., patented multibit sigma-delta (Σ-Δ) architecture. An I2C® port is included, allowing a microcontroller to adjust volume and many other parameters. The AD1937 operates from 3.3 V digital and analog supplies. The AD1937 is available in a 64-lead (differential output) LQFP.

The AD1937 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 (frame) clock or from an external crystal, the AD1937 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 architecture to further minimize EMI. By using 3.3 V supplies, power consumption is minimized and further reduces emissions.

Applications

  • Automotive audio systems
  • Home theater systems
  • Set-top boxes
  • Digital audio effects processors
  • Data Sheet, Rev. 0, 9/08

    Product Lifecycle icon-recommended Production

    At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

    Evaluation Kits (2)

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    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.