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AD7626:  16-Bit, 10 MSPS, PulSAR Differential ADC

Product Details


The AD7626 is a 16-bit, 10 MSPS, charge redistribution successive approximation register (SAR) based architecture analog-to-digital converter (ADC). SAR architecture allows unmatched performance both in noise (91.5 dB SNR) and in linearity (±0.45 LSB INL). The AD7626 contains a high speed, 16-bit sampling ADC, an internal conversion clock, and an internal buffered reference. On the CNV edge, it samples the voltage difference between the IN+ and IN− pins. The voltages on these pins swing in opposite phase between 0 V and REF. The 4.096 V reference voltage, REF, can be generated internally or applied externally.

All converted results are available on a single LVDS self-clocked or echoed-clock serial interface, reducing external hardware connections.

The AD7626 is housed in a 32-lead, 5 mm × 5 mm LFCSP with operation specified from −40°C to +85°C.

Applications

  • Digital imaging systems
    Digital X-ray
    Digital MRI
    CCD and IR cameras
  • High speed data acquisition
  • High dynamic range telecommunications receivers
  • Spectrum analysis
  • Test equipment

FEATURES and BENEFITS

  • Throughput: 10 MSPS
  • SNR: 91.5 dB
  • 16-bit no missing codes
  • INL: ±0.45 LSB
  • DNL: ±0.35 LSB
  • Power dissipation: 136mW
  • 32-lead LFCSP (5 mm × 5 mm)
  • SAR architecture
    No latency/no pipeline delay
  • 16-bit resolution with no missing codes
  • Zero error: ±1LSB
  • Differential input range: ±4.096 V
  • Please see data sheet for additional features

AD7626 Functional Block Diagram

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Of Note ...

For additional ADI Healthcare Products and related information, please visit www.analog.com/healthcare

Documentation

Title Content Type File Type
AD7626: 16-Bit, 10 MSPS, PulSAR Differential ADC Data Sheet (Rev B, 07/2012) (pdf, 268 kB) Data Sheets PDF
AN-1141: Powering a Dual Supply Precision ADC with Switching Regulators  (pdf, 640 kB) Application Notes 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
AN-877: Interfacing to High Speed ADCs via SPI  (pdf, 1594 kB) Application Notes PDF
AN-935: Designing an ADC Transformer-Coupled Front End  (pdf, 363 kB) Application Notes PDF
AN-742: Frequency Domain Response of Switched-Capacitor ADCs  (pdf, 401 kB) Application Notes PDF
CN-0105: Single-Ended-to-Differential High Speed Drive Circuit for 16-Bit, 10 MSPS AD7626 ADC  (pdf, 382 kB) Circuit Note PDF
AD7626: 16-BIT, 10-MSPS SAR Converter
ADI's AD7626 PulSAR® ADC achieves a new level of 16-bit data capture performance, with best-in-class 15-bit ENOB (effective number of bits) and 10-MSPS (million samples per second) throughput, which is 2.5 times faster than other SAR ADCs.
Videos HTML
The Data Conversion Handbook Design Handbooks HTML
MT-031: Grounding Data Converters and Solving the Mystery of  (pdf, 144 kB) Tutorials PDF
MT-002: What the Nyquist Criterion Means to Your Sampled Data System Design  (pdf, 152 kB) Tutorials PDF
MT-001: Taking the Mystery out of the Infamous Formula, "SNR=6.02N + 1.76dB," and Why You Should Care  (pdf, 94 kB) Tutorials PDF
MT-074: Differential Drivers for Precision ADCs  (pdf, 249 kB) Tutorials PDF
EVAL-AD7625/AD7626EDZ: Evaluation Board for AD7625/AD7626 (Preliminary Rev, PrC)  (pdf, 2517 kB) User Guides PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
MS-2022: Seven Steps to Successful Analog-to-Digital Signal Conversion (Noise Calculation for Proper Signal Conditioning)  (pdf, 277 kB) Technical Articles PDF
MS-2124: Understanding AC Behaviors of High Speed ADCs  (pdf, 276 kB) Technical Articles PDF
Nine Often Overlooked ADC Specifications  (pdf, 445 kB)
Analog-to-digital converters (ADCs) have many specifications; some are more important for a given application than others. Understanding these specifications and controlling external devices affecting the ADC will lead to better performance.
Technical Articles PDF
SAR ADC & Driver Quick-Match Guide  (pdf, 251 kB)
Find drivers for ADI's most popular single-ended and differential SAR ADCs based on your specific application conditions.
Product Selection Guide PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

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Companion Products

Suggested Companion Products


Recommended Driver Amplifiers for the AD7626 Recommended External Voltage References for the AD7626
  • For low drift, low noise and high current output applications, we recommend ADR434 (4.096V reference).
  • For low drift, low noise and low dropout, we recommend the ADR444 or the ADR4540 (4.096V reference).
  • For low drift, low noise, low power, we recommend the ADR4550 or the ADR3440 (4.096V reference).
  • For low noise, high current output, low drift, we recommend the ADR280 or the ADR3412 (1.2V reference).

  • For an external CMV buffer amplifier, we recommend the AD8031 or AD8032.
Recommended Drivers and Receivers for the AD7626
  • For a dual LVDS line driver, we recommend the ADN4663.
Recommended Voltage Regulators for the AD7626
  • For high accuracy, low dropout, VDD1 (5V) and VDD2 (2.5V) regulators, we suggest the ADP3330-5 and the ADP3330-2.5.
  • For high accuracy, low dropout, adjustable regulators, we recommend the ADP3334 and ADP1708.
Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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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.

AD7626 Evaluation Kit
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-CED1Z Status: Production Evaluation 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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