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AD1939:  4 ADC/8 DAC with PLL, 192 kHz, 24-Bit Codec

Product Details


The AD1939 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 SPI port is included, allowing a microcontroller to adjust volume and many other parameters. The AD1939 operates from 3.3 V digital and analog supplies. The AD1939 is available in a 64-lead (differential output) LQFP package.

The AD1939 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 AD1939 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
  • 112 dB DAC/107 dB ADC 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
  • Differential DAC output
  • Log volume control with autoramp function
  • SPI controllable for flexibility
  • For additional features please see the data sheet

Functional Block Diagram for AD1939

Documentation

Title Content Type File Type
AD1939: 4 ADC/8 DAC with PLL, 192 kHz, 24-Bit Codec Data Sheet (Rev E, 02/2013) (pdf, 621 kB) Data Sheets PDF
AN-1006: Using the EVAL-ADUSB2EBZ  (pdf, 349 kB) Application Notes PDF
UG-040: Evaluation Guide for AD1937/AD1939  (pdf, 1528 kB) User Guides PDF
Flexible Silicon: GUI-programmable Audio Processors (Part 2)
(EDN, 10/27/2005)
Technical Articles HTML
Benchmarking Integrated Audio: Why CPU Usage Alone No Longer Predicts User Experience  (pdf, 1052 kB)
(www.analog.com/everywhere, 2007)
Technical Articles PDF
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
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
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

AD1939 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD1939WBSTZ Status: Production 64 ld LQFP (10x10mm) 64 Auto Tray, 160 $8.97 $8.11 Y  Material Info Notify Me Purchase Sample
AD1939WBSTZ-RL Status: Production 64 ld LQFP (10x10mm) 64 Auto Reel, 1500 - $8.11 Y  Material Info Notify Me Purchase
AD1939YSTZ Status: Production 64 ld LQFP (10x10mm) 64 Ind Tray, 160 $8.54 $7.72 Y  Material Info PCN Purchase Sample
AD1939YSTZRL Status: Production 64 ld LQFP (10x10mm) 64 Ind Reel, 1500 - $7.72 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 -
AD1939 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-AD1939AZ 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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