Overview

Features and Benefits

  • Phase-locked loop generated or direct master clock
  • Low EMI design
  • 107 dB dynamic range and SNR
  • −94 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
  • Differential ADC input
  • SPI®-controllable for flexibility
  • Software-controllable clickless mute
  • Software power-down
  • See data sheet for additional features

Product Details

The AD1974 is a high performance, single-chip ADC that provides four analog-to-digital converters (ADCs) with differential inputs using the Analog Devices, Inc. patented multibit sigma-delta (Σ-Δ) architecture. An SPI port is included, allowing a microcontroller to enable mutes and adjust many other parameters. The AD1974 operates from 3.3 V digital and analog supplies. The AD1974 is available in a single-ended output 48-lead LQFP.

The AD1974 is designed for low EMI. This consideration is apparent in both the system and circuit design architectures. By using the on-board phase-locked loop (PLL) to derive the master clock from the LR clock or from an external crystal, the AD1974 eliminates the need for a separate high frequency master clock and can also be used with a suppressed bit clock. The ADCs are designed using the latest continuous time architectures from Analog Devices to further minimize EMI. By using 3.3 V supplies, power consumption is minimized, further reducing emissions.

APPLICATIONS

  • Automotive audio systems
  • Home Theater Systems
  • Set-top boxes
  • Digital audio effects processors

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)

Tools & Simulations

IBIS Models

AD1938 IBIS Model

Covers the AD1928, AD1933/34/38/39, AD1974 and the ADAU1328.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

Sample & Buy


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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

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.