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AD1938:  4 ADC/8 DAC with PLL, 192 kHz, 24-Bit CODEC

Product Details


           Linux Driver

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 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 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.

Applications

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

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
  • Linux Driver
  • 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

Functional Block Diagram for AD1938

Documentation

Title Content Type File Type
AD1938: 4 ADC/8 DAC with PLL, 192 kHz, 24-Bit Codec Data Sheet (Rev E, 02/2013) (pdf, 553 kB) Data Sheets PDF
AN-1006: Using the EVAL-ADUSB2EBZ  (pdf, 349 kB) Application Notes PDF
UG-087: Evaluating the AD1940 SigmaDSP Using the EVAL-AD1940MINIBZ  (pdf, 796 kB) User Guides PDF
UG-045: Evaluating the AD1938 Four ADC/Eight DAC with PLL 192 kHz, 24-Bit Codec  (pdf, 1809 kB) User Guides PDF
Benchmarking Integrated Audio: Why CPU Usage Alone No Longer Predicts User Experience  (pdf, 1052 kB)
(www.analog.com/everywhere, 2007)
Technical Articles PDF
ASUS P5N32-E SLI Plus: NVIDIA's 650i goes Dual x16  (pdf, 3028 kB)
(AnandTech, 04/02/2007)
Product Reviews PDF
Realtek Audio Codecs Not Rendering True EAX  (pdf, 138 kB)
(DailyTech, 09/26/2006)
Product Reviews PDF
The World is Still Analog
(Test & Measurement World, 6/1/2006)
Product Reviews HTML
Underneath Microsoft's Universal Audio Architecture  (pdf, 250 kB)
(DailyTech, 01/30/2007)
Product Reviews PDF
Audio Performance  (pdf, 811 kB)
(AnandTech, 10/20/2006)
Product Reviews PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD1938 IBIS Model  (ibs)
Covers the AD1928, AD1933/34/38/39, AD1974 and the ADAU1328.
IBIS Models IBS
Automated Register Window Builder, Version 3.2.1  (zip, 4512 kB) Software Modules ZIP

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

AD1938 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD1938WBSTZ Status: Production LQFP 1.4 MM 48 Auto Tray, 250 $7.90 $7.14 Y  Material Info Notify Me Purchase Sample
AD1938WBSTZ-RL Status: Production LQFP 1.4 MM 48 Auto Reel, 2000 - $7.14 Y  Material Info Notify Me Purchase
AD1938YSTZ Status: Production 48 ld LQFP 48 Ind Tray, 250 $7.90 $7.14 Y  Material Info PCN Purchase Sample
AD1938YSTZRL Status: Production 48 ld LQFP 48 Ind Reel, 2000 - $7.14 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

ADUSB2EBZ Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-ADUSB2EBZ Status: Production USB Interface $80.00 Yes -
AD1938 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-AD1938AZ Status: Production Evaluation Board $499.00 Yes -

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.

Check Inventory & Purchase

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