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AD73311L:  Single-Channel, 3 V Front-End Processor for General Purpose
Applications Including Speech and Telephony

Product Details

The AD73311 and AD73311L are complete front-end processors for general-purpose applications including speech and telephony. They feature a 16-bit A/D conversion channel and a 16-bit D/A conversion channel. Each channel provides 70 dB signal-to-noise ratio over the voiceband signal bandwidth. The AD73311L is a follow-on to the AD73311 with improved on-chip filtering, more sample-rate options and lower cost. The L version operates from 3.0 V only, where as the AD73311 operates from either 3 V or 5 V power supplies.

The gains of the A/D and D/A conversion channels are programmable over 38 dB and 21 dB respectively. An on-chip reference voltage is included to allow single-supply operations. A serial port (SPORT) allows easy interfacing for single or cascaded devices to industry standard DSP engines.

The AD73311 and AD73311L are suitable for a variety of applications in the speech and telephony areas including low-bit rate, high quality compression, speech enhancement, recognition and synthesis. The low group delay characteristic of the part makes it suitable for single or multi-channel active-control applications.


  • 16-Bit A/D Converters
  • 16-Bit D/A Converters
  • Programmable Input/Output Sample Rates
  • 75 dB ADC SNR
  • 70 db DAC SNR
  • 64 ksps Maximum Sample Rate
  • -90 db Crosstalk
  • Programmable Input/Output Gain
  • Low group Delay:
    25 µs per ADC ch
    50 µs per DAC ch
  • Flexible Serial Port Allows Up to 4 Codecs To Be Connected in Cascade Giving 8 I/O Channels
  • Single 2.7 V to 3.3 V Supply Operation
  • 50 mW Max Power Dissipation at 2.7 V
  • Linux Driver

Functional Block Diagram for AD73311L


Title Content Type File Type
AD73311L: Low Cost, Low Power CMOS General Purpose Analog Front End Data Sheet  (Rev A, 08/2000) (pdf, 382 kB) Data Sheets PDF
AN-327: DAC ICs: How Many Bits Is Enough?  (pdf, 345 kB)
Digital audio playback DACs are available in a variety of different architectures--each with it's own performance tradeoffs.
Application Notes PDF
AN-211: The Alexander Current-Feedback Audio Power Amplifier  (pdf, 1154 kB) Application Notes PDF
Benchmarking Integrated Audio: Why CPU Usage Alone No Longer Predicts User Experience  (pdf, 1052 kB)
(, 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
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

Evaluation Kits & Symbols & Footprints

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.

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Price, packaging, availability

AD73311L Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
AD73311LARSZ Status: Production 20 ld SSOP 20 Ind Tube, 66 $2.98 $2.69 Y  Material Info PCN Purchase Sample
AD73311LARSZ-REEL Status: Production 20 ld SSOP 20 Ind Reel, 1500 - $2.69 Y  Material Info PCN Purchase
AD73311LARSZ-REEL7 Status: Production 20 ld SSOP 20 Ind Reel, 500 - $2.69 Y  Material Info PCN Purchase
AD73311LARUZ Status: Production 20 ld TSSOP 20 Ind Tube, 75 $2.98 $2.69 Y  Material Info PCN Purchase Sample
AD73311LARUZ-RL Status: Production 20 ld TSSOP 20 Ind Reel, 2500 - $2.69 Y  Material Info PCN Purchase
AD73311LARUZ-RL7 Status: Production 20 ld TSSOP 20 Ind Reel, 1000 - $2.69 Y  Material Info PCN Purchase
AD73311LARZ Status: Obsolete 20 ld SOIC - Wide 20 Ind Tube, 37 - - Y  Material Info PCN/PDN Contact ADI
AD73311LARZ-REEL Status: Obsolete 20 ld SOIC - Wide 20 Ind Reel, 1000 - - Y  Material Info PCN/PDN Contact ADI
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.

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