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AD7276:  3 MSPS,12-Bit ADC in 8-Lead MSOP

Product Details


The AD7276 is a 12-bit, high speed, low power, successive approximation analog-to-digital converters (ADCs). The parts operate from a single 2.35 V to 3.6 V power supply and feature throughput rates of up to 3 MSPS. The parts contain a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 55 MHz.

The conversion process and data acquisition are controlled using CS and the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS, and the conversion is also initiated at this point. There are no pipeline delays associated with the part.

The AD7276 uses advanced design techniques to achieve very low power dissipation at high throughput rates.

The reference for the part is taken internally from VDD. This allows the widest dynamic input range to the ADC; therefore, the analog input range for the part is 0 to VDD. The conversion rate is determined by the SCLK

Product Highlights

  1. 3 MSPS ADCs in a 6-lead TSOT package
  2. AD7476/AD7477/AD7478 and AD7476A/AD7477A/ AD7478A pin-compatible
  3. High throughput with low power consumption
  4. Flexible power/serial clock speed management. This allows maximum power efficiency at low throughput rates
  5. Reference derived from the power supply
  6. No pipeline delay. The parts feature a standard successive approximation ADC with accurate control of the sampling instant via a CS input and once-off conversion control.

FEATURES and BENEFITS

  • Throughput rate: 3 MSPS
  • Specified for VDD of 2.35 V to
    3.6 V
  • Power consumption
    12.6 mW at 3 MSPS with 3 V supplies
  • Wide input bandwidth
    70 dB SNR at 1 MHz input frequency
  • Flexible power/serial clock speed management
  • No pipeline delays
  • Temperature range: −40°C to +125°C
  • Please see data sheet for additional features.

Functional Block Diagram for AD7276

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Low Resolution - Single Channel Unipolar/Bipolar 8/10/12-Bit PulSAR ADCs

Documentation

Title Content Type File Type
AD7276/AD7277/AD7278: 3 MSPS, 12-/10-/8-Bit ADCs in 6-Lead TSOT Data Sheet  (Rev C, 05/2011) (pdf, 596 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
EE-246: Interfacing AD7276 High-Speed Data Converters to ADSP-21262 SHARC Processors (Rev 1, 10/2004)  (pdf, 923 kB) Application Notes PDF
EE-245: Interfacing AD7276 High-Speed Data Converters to ADSP-BF535 Blackfin Processors  (pdf, 1423 kB) Application Notes PDF
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
UG-450: Evaluating the AD7276, 3 MSPS, 12-Bit ADC  (pdf, 1714 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
8- to 18-Bit SAR ADCs ... From the Leader in High Performance Analog  (pdf, 1885 kB)
8- to 18-Bit SAR ADCs with Sample Rates up to 3 MSPS -- The latest additions to ADI’s ADC portfolio offer unrivaled functionality in terms of channel count and power supply voltage, optimal power/speed ratios, and the smallest packages to meet the demands of any data acquisition application, including portable, industrial, medical, wireless, and communications.
Overview PDF
Security and Surveillance Applications Overview HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary 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.

Product Recommendations & Reference Designs

Companion Products

Suggested Companion Products


Recommended Driver Amplifiers for the AD7276
  • For low frequency and low bias current, we recommend the ADA4627-1.
  • For low noise and low power applications, we recommend the ADA4841-1.
  • For low cost, general purpose, we recommend the AD8031 or the AD8038.
Recommended External Voltage References for the AD7276
  • For high precision and improved power performance, we recommend the REF193 or the ADR4530.
  • For improved SNR at 3V, we recommend the AD780.
Recommended Digital Isolators for the AD7276
  • For a 3- channel, 10Mbps data rate, we recommend the ADuM1311.

Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD7276 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD7276ARMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $4.27 $3.50 Y  Material Info PCN Purchase
AD7276ARMZ-REEL Status: Production 8 ld MSOP 8 Ind Reel, 3000 - $3.50 Y  Material Info PCN Purchase
AD7276AUJZ-500RL7 Status: Production 6 ld TSOT 6 Ind Reel, 500 $2.18 $1.85 Y  Material Info PCN Purchase
AD7276AUJZ-REEL7 Status: Production 6 ld TSOT 6 Ind Reel, 3000 - $1.85 Y  Material Info PCN Purchase
AD7276BRM Status: Production 8 ld MSOP 8 Ind Tube, 50 $4.27 $3.50 N  Material Info PCN Purchase
AD7276BRMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $4.27 $3.50 Y  Material Info PCN Purchase Sample
AD7276BRMZ-REEL Status: Production 8 ld MSOP 8 Ind Reel, 3000 - $3.50 Y  Material Info PCN Purchase
AD7276BUJZ-500RL7 Status: Production 6 ld TSOT 6 Ind Reel, 500 - $3.50 Y  Material Info PCN Purchase Sample
AD7276BUJZ-REEL7 Status: Production 6 ld TSOT 6 Ind Reel, 3000 - $3.50 Y  Material Info PCN Purchase
AD7276YUJZ-500RL7 Status: Production 6 ld TSOT 6 Ind Reel, 500 - $2.50 Y  Material Info PCN Purchase Sample
AD7276YUJZ-REEL7 Status: Production 6 ld TSOT 6 Ind Reel, 3000 - $2.50 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.

AD7276 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-AD7276SDZ Status: Contact ADI Evaluation Board $59.00 Yes -
EVAL-SDP-CB1Z Status: Production Evaluation Controller Board $99.00 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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