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AD7623:  16-Bit, 1.33 MSPS PulSAR® A/D Converter

Product Details

The AD7623 is a 16-bit, 1.33 MSPS, charge redistribution SAR, fully differential analog-to-digital converter (ADC) that operates from a single 2.5 V power supply. It contains a high speed 16-bit sampling ADC, an internal conversion clock, an internal reference (and buffer), error correction circuits, and both serial and parallel system interface ports. Power consumption is automatically scaled with throughput, making it ideal for battery-powered applications. It is available in 48-lead, low profile quad flat package (LQFP) and a lead frame chip-scale (LFCSP_VQ) package. Operation is specified from −40°C to +85°C.

Product Highlights

  1. Fast Throughput: The AD7623 is a 1.33 MSPS, charge redistribution, 16-bit SAR ADC.
  2. Superior Linearity: The AD7623 has no missing 16-bit code.
  3. Internal Reference: The AD7623 has a 2.048 V internal reference with a typical drift of ±7 ppm/°C.
  4. Single-Supply Operation: The AD7623 operates from a 2.5 V single supply and typically dissipates 45 mW. Its power dissipation decreases with the throughput.
  5. Serial or Parallel Interface: Versatile parallel (16- or 8-bit bus) or 2-wire serial interface arrangement compatible with 2.5 V, 3.3 V, or 5 V logic.


  • Medical instruments
  • High speed data acquisition
  • Digital signal processing
  • Communications
  • Instrumentation
  • Spectrum analysis
  • ATE


  • Throughput: 1.33 MSPS
  • 2.048 V internal reference
  • Differential input range: ±VREF
    (VREF up to 2.5 V)
  • INL: ±1 LSB typical
  • 16-bit resolution with no missing codes
  • SINAD: 88 dB typical @ 100 kHz
  • THD: −97 dB typical @ 100 kHz
  • No pipeline delay (SAR architecture)
  • Parallel (16- or 8-bit bus) and serial 5 V/3.3 V/2.5 V interface
  • SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible
  • 2.5 V single-supply operation
  • Power dissipation: 45 mW typical @ 1.33 MSPS

Functional Block Diagram for AD7623


Title Content Type File Type
AD7623: 16-Bit, 1.33 MSPS PulSAR® ADC Data Sheet (Rev 0, 08/2005) (pdf, 558 kB) Data Sheets PDF
AN-931: Understanding PulSAR ADC Support Circuitry  (pdf, 299 kB)
This application note discusses in general the pitfalls that occur regularly when using SAR ADCs and, more importantly, how to easily prevent them.
Application Notes PDF
AN-932: Power Supply Sequencing  (pdf, 95 kB) Application Notes PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
High Speed, High Accuracy 14-Bit, 16-Bit, and 18-Bit PulSAR ADCs  (pdf, 3826 kB)
A PulSAR Family Brochure (6/2006)
Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD7623 IBIS Models IBIS Models HTML

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.

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Price, packaging, availability

AD7623 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
AD7623ACPZ Status: Production 48 ld LFCSP 7x7mm (5.25EP) 48 Ind Tray, 260 $22.07 $19.95 Y  Material Info Notify Me Purchase Sample
AD7623ACPZRL Status: Last Time Buy 48 ld LFCSP 7x7mm (5.25EP) 48 Ind Reel, 2500 - $19.95 Y  Material Info PDN Purchase
AD7623ASTZ Status: Production 48 ld LQFP 48 Ind Tray, 250 $22.07 $19.95 Y  Material Info PCN Purchase Sample
AD7623ASTZRL Status: Last Time Buy 48 ld LQFP 48 Ind Reel, 2000 - $19.95 Y  Material Info PCN/PDN 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.

AD7623 Evaluation Kit
Model Description Price RoHS View PCN/ PDN Check Inventory/
EVAL-CED1Z Status: Production Evaluation Controller Board $249.00 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.

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