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  4. AD1938


Overview

Features and Benefits

  • PLL generated or direct master clock
  • Low EMI design
  • 108 dB DAC/107 dB ADC dynamic range and SNR
  • −94 dB THD + N
  • Log volume control with autoramp function
  • 3.3 V single supply
  • Tolerance for 5 V logic inputs
  • Supports 24 bits and 8 kHz to 192 kHz sample rates
  • Please see data sheet for additional features

Product Details

The AD1938 is a high performance, single-chip codec that provides four analog-to-digital converters (ADCs) with input and eight digital-to-analog converters (DACs) with single-ended output using the Analog Devices, Inc., patented multibit sigma-delta (Σ-Δ) architecture. 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 differential 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.

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)

Software & Systems Requirements

Software Development Tools

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.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
AD1938WBSTZ Material Declaration Reliability Data 48-Lead LQFP (7mm x 7mm)
AD1938WBSTZ-RL Material Declaration Reliability Data 48-Lead LQFP (7mm x 7mm)
AD1938YSTZ Material Declaration Reliability Data 48-Lead LQFP (7mm x 7mm)
AD1938YSTZRL Material Declaration Reliability Data 48-Lead LQFP (7mm x 7mm)
Wafer Fabrication Data

PCN-PDN Information

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Sample & Buy


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Buy Now Pricing


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List Pricing


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Lead Times


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Sampling


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Price Table Help

 

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.