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AD780:  2.5 V/3.0 V Ultrahigh Precision Bandgap Voltage Reference

Product Details


The AD780 is an ultrahigh precision bandgap reference voltage which provides a 2.5 V or 3.0 V output from inputs between 4.0 V and 36 V. Low initial error and temperature drift combined with low output noise and the ability to drive any value of capacitance make the AD780 the ideal choice for enhancing the performance of high resolution ADCs and DACs and for any general purpose precision reference application. A unique low headroom design facilitates a 3.0 V output from a 5.0 V ± 10% input, providing a 20% boost to the dynamic range of an ADC, over performance with existing 2.5 V references.

The AD780 can be used to source or sink up to 10 mA and can be used in series or shunt mode, thus allowing positive or negative output voltages without external components. This makes it suitable for virtually any high performance reference application. Unlike some competing references, the AD780 has no "region of possible instability." The part is stable under all load conditions when a 1 µF bypass capacitor is used on the supply.

A temperature output pin is provided on the AD780. This provides an output voltage that varies linearly with temperature, allowing the AD780 to be configured as a temperature transducer while providing a stable 2.5 V or 3.0 V output.

The AD780 is a pin-compatible performance upgrade for the LT1019(A)-2.5 and the AD680. The latter is targeted toward low power applications.

The AD780 is available in two grades in plastic DIP, SOIC and cerdip packages. The AD780AN, AD780AR, AD780BN and AD780BR are specified for operation from -40°C to +85°C. The AD780SQ and AD780SQ/883B are specified for -55°C to +125°C operation.

FEATURES and BENEFITS

  • Pin Programmable 2.5 V or 3.0 V Output
  • Ultralow Drift: 3 ppm/°C max
  • High Accuracy: 2.5 V or 3.0 V, ±1 mV max
  • Low Noise: 100 nV/√Hz
  • Noise Reduction Capability
  • Low Quiescent Current: 1 mA max
  • Output Trim Capability
  • Plug-in Upgrade for Present References
  • Temperatue Output PIN
  • Series or Shunt Mode Operation 2.5 V, ±3.0 V)

Functional Block Diagram for AD780

Of Note ...

Instrumentation designers who purchased the AD780 also bought:
AD829 - High Speed, Low Noise Video Op Amp
AD9042 - 12-Bit, 41 MSPS Monolithic A/D Converter
AD7244 - 12-/14-Bit DAC, 3 V Buried Zener Reference, DAC
AD7528 - CMOS Dual 8-Bit Buffered Multiplying DAC
AD744 - Precision, 500 ns Settling BiFET Op Amp

Documentation

Title Content Type File Type
AD780: 2.5 V/3.0 V High Precision Reference Data Sheet (Rev F, 12/2012) (pdf, 375 kB) Data Sheets PDF
AD780: Military Data Sheet  (Rev MIL, 05/1994) (pdf) Data Sheets PDF
AN-713: The Effect of Long-Term Drift on Voltage References  (pdf, 237 kB) Application Notes PDF
CN-0116: High Voltage, High Precision Current Sensing with Output Level Shifting Using the AD8210 Current Sense Amplifier and the AD8274 Difference Amplifier  (pdf, 208 kB) Circuit Note PDF
CN-0100: Measuring −48 V High-Side Current Using the AD629 Difference Amplifier, AD8603 Op Amp, AD780 Reference, and AD7453 12-Bit ADC Single-Supply Components  (pdf, 108 kB) Circuit Note PDF
CN-0047: Using the AD7328 8-Channel ADC in Applications with Single-Ended Industrial-Level Signals  (pdf, 109 kB) Circuit Note PDF
CN-0044: Using the AD8599 Op Amp as an Ultralow Distortion Driver for the AD7995  (pdf, 82 kB) Circuit Note PDF
CN-0030: AD5390/AD5391/AD5392 Channel Monitor Function  (pdf, 82 kB) Circuit Note PDF
ADI Warns Against Misuse of COTS Integrated Circuits  (pdf, 13 kB)
(Revised 1/03)
Invites Customer Participation in Creative Mil/Aero System Solutions
Recommended Reading PDF
Space Qualified Parts List  (pdf, 93 kB)
This document lists 67 (240+) space level products that are available from Analog Devices. Many of the products listed are state-of-the-art data conversion and signal processing products that were previously only available as commercial or military Class B products. Through our Space Products Group and MIL-PRF-38535 certified Level V (Class S) facility, we are pleased to offer these products to the space marketplace.
Aerospace Information PDF
When high performance and low power make the design, ADI converters make the difference. Overview HTML
What do I need to know about selecting and using Voltage References? FAQs/RAQs HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
Voltage Reference Selection & Evaluation Wizard Design Calculators HTML
AD780 SPICE Macro-Model SPICE Models 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.

Product Recommendations & Reference Designs

Engineered. Tested. Ready to Integrate.
Learn More

SampleSample & Buy

Price, packaging, availability

AD780 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD780ANZ Status: Production 8 ld PDIP 8 Ind Tube, 50 $4.69 $4.18 Y  Material Info PCN Purchase
AD780AR Status: Production 8 ld SOIC 8 Ind Tube, 98 $5.25 $4.66 N  Material Info Notify Me Purchase
AD780AR-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 750 $5.25 $4.66 N  Material Info Notify Me Purchase
AD780ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $4.69 $4.18 Y  Material Info Notify Me Purchase
AD780ARZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 $4.69 $4.18 Y  Material Info Notify Me Purchase
AD780BNZ Status: Production 8 ld PDIP 8 Ind Tube, 50 $6.77 $6.32 Y  Material Info PCN Purchase
AD780BR Status: Production 8 ld SOIC 8 Ind Tube, 98 $7.53 $7.05 N  Material Info Notify Me Purchase
AD780BR-REEL Status: Last Time Buy 8 ld SOIC 8 Ind Reel, 2500 - $7.05 N  Material Info PDN Purchase
AD780BR-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 750 $7.53 $7.05 N  Material Info Notify Me Purchase
AD780BRZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $6.77 $6.32 Y  Material Info Notify Me Purchase
AD780BRZ-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $6.32 Y  Material Info Notify Me Purchase
AD780BRZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 750 $6.77 $6.32 Y  Material Info Notify Me Purchase
AD780CRZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $5.17 $4.81 Y  Material Info Notify Me Purchase
AD780CRZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 $5.17 $4.81 Y  Material Info Notify Me 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.


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