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AD844:  60 MHz, 2000 V/µs Monolithic Op Amp

Product Details


The AD844 is a high speed monolithic operational amplifier fabricated using Analog Devices' junction isolated complementary bipolar (CB) process. It combines high bandwidth and very fast large signal response with excellent dc performance. Although optimized for use in current to voltage applications and as an inverting mode amplifier, it is also suitable for use in many non-inverting applications.

The AD844 can be used in place of traditional op amps, but its current feedback architecture results in much better ac performance, high linearity and an exceptionally clean pulse response.

This type of op amp provides a closed-loop bandwidth which is determined primarily by the feedback resistor and is almost independent of the closed-loop gain. The AD844 is free from the slew rate limitations inherent in traditional op amps and other current-feedback op amps. Peak output rate of change can be over 2000 V/µs for a full 20 V output step. Settling time is typically 100 ns to 0.1%, and essentially independent of gain. The AD844 can drive 50 Ohm loads to ±2.5 V with low distortion and is short circuit protected to 80 mA.

The AD844 is available in four performance grades and three package options. In the 16-pin SOIC (R) package, the AD844J is specified for the commercial temperature range of 0°C to +70°C. The AD844A and AD844B are specified for the industrial temperature range of -40°C to +85°C and are available in the cerdip (Q) package. The AD844A is also available in an 8-pin plastic mini-DIP (N). The AD844S is specified over the military temperature range of -55°C to +125°C. It is available in the 8-pin cerdip (Q) package. "A" and "S" grade chips and devices processed to MIL-STD-883B, REV. C are also available.

FEATURES and BENEFITS

  • Wide Bandwidth: 60 MHz at Gain of -1
  • Wide Bandwidth: 33 MHz at Gain of -10
  • Very High Output Slew Rate: Up to 2000 V/µs
  • 20 MHz Full Power Bandwidth, 20 V p-p,
    RL = 500 Ω
  • Fast Settling: 100 ns to 0.1% (10 V Step)
  • Differential Gain Error: 0.03% at 4.4 MHz
  • Differential Phase Error: 0.158 at 4.4 MHz
  • Low Offset Voltage: 150 mV Max (B Grade)
  • Low Quiescent Current: 6.5 mA
  • Available in Tape and Reel in
    Accordance with EIA-481A Standard

Pin Configuration Diagram for AD844

Documentation

Title Content Type File Type
AD844: 60 MHz, 2000 V/µs Monolithic Op Amp Data Sheet  (Rev F, 02/2009) (pdf, 430 kB) Data Sheets PDF
AD844: Military Data Sheet  (Rev A, 07/2000) (pdf) Data Sheets PDF
AN-581: Biasing and Decoupling Op Amps in Single Supply Applications  (pdf, 166 kB) Application Notes PDF
AN-214: Ground Rules for High Speed Circuits  (pdf, 356 kB)
Layout and Wiring Are Critical in Video Converter Circuits.
Application Notes PDF
AN-402: Replacing Output Clamping Op Amps with Input Clamping Amps  (pdf, 55 kB)
So far most clamping amplifiers have relied upon an output clamping architecture and are called output clamp amps (OCAs). A new architecture called an input clamp amp (ICA) offers superior clamping accuracy and lower distortion.
Application Notes PDF
AN-417: Fast Rail-to-Rail Operational Amplifiers Ease Design Constraints in Low Voltage High Speed Systems  (pdf, 228 kB)
Movement towards lower power supply voltages is driven by the demand that systems consume less and less power coupled with the desire to reduce the number of power supply voltages in the system. The following applications are discussed: Single-Ended and Differential Input ADC Input Circuits, Video Line Driver, Active Filter, HDSL Transceiver, and Transformer Drive Circuits.
Application Notes PDF
MT-060: Choosing Between Voltage Feedback and Current Feedback Op Amps  (pdf, 62 kB) Tutorials PDF
MT-059: Compensating for the Effects of Input Capacitance on VFB and CFB Op Amps Used in Current-to-Voltage Converters  (pdf, 69 kB) Tutorials PDF
MT-058: Effects of Feedback Capacitance on VFB and CFB Op Amps  (pdf, 66 kB) Tutorials PDF
MT-056: High Speed Voltage Feedback Op Amps  (pdf, 109 kB) Tutorials PDF
MT-053: Op Amp Distortion: HD, THD, THD + N, IMD, SFDR, MTPR  (pdf, 104 kB) Tutorials PDF
MT-052: Op Amp Noise Figure: Don't Be Misled  (pdf, 60 kB) Tutorials PDF
MT-050: Op Amp Total Output Noise Calculations for Second-Order System  (pdf, 38 kB) Tutorials PDF
MT-049: Op Amp Total Output Noise Calculations for Single-Pole System  (pdf, 40 kB) Tutorials PDF
MT-048: Op Amp Noise Relationships: 1/f Noise, RMS Noise, and Equivalent Noise Bandwidth  (pdf, 81 kB) Tutorials PDF
MT-047: Op Amp Noise  (pdf, 72 kB) Tutorials PDF
MT-033: Voltage Feedback Op Amp Gain and Bandwidth  (pdf, 251 kB) Tutorials PDF
MT-032: Ideal Voltage Feedback (VFB) Op Amp  (pdf, 65 kB) Tutorials PDF
A Stress-Free Method for Choosing High-Speed Op Amps
A decision-tree approach to making the critical decision about high-speed op amp selection, including a look at some helpful tools.
Webcasts WEBCAST
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
High Speed Amplifiers Selection Table  (pdf, 77 kB) Product Selection Guide PDF
PCN#00-406  (pdf, 14 kB)
(4/14/00)
Product Change notice for change of Analog Devices, Inc. Aerospace Product Line standard product from 883 Class S to MIL-PRF-38535, level V.
Aerospace Information PDF
Aerospace Dice  (pdf, 196 kB)
(Revised 1/2006)
Many Analog Devices products can be purchased as Class K die.
Aerospace Information PDF
Standard Space Level Products Program  (pdf, 39 kB)
This brochure describes the standard flow and how to order Analog Devices, Inc. standard product for Space Level not available as JAN, or QML. It replaces the Standard Class S brochure.
Aerospace Information 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
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
dBm/dBu/dBv Calculator
This calculator converts between standard units of power measurement and signal strength.
Utilities and Conversions HTML
Power Dissipation vs Die Temp
This tool estimates die temperature and power dissipation based on the supply voltages, ambient temperature, load characteristics, and package thermal data.
Utilities and Conversions HTML
ADIsimOpAmp™
This tool will help with the selection, evaluation and troubleshooting of voltage feedback Op-Amps. It uses typical data to model the behavior of a selected amplifier. It allows a user to select an amplifier, configure a circuit, apply a signal and evaluate the performance. It is useful for checking an amplifier's spec's such as Bandwidth, Slew Rate, Input/Output Range, Gain Error, Load Current, Stability Issues and DC Errors in a given circuit.
ADIsim Design/Simulation Tools HTML
OpAmp Stability
An applet for demonstrating stability effects in opamp buffers.
Design Calculators HTML
AD844 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.

SampleSample & Buy

Price, packaging, availability

AD844 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
5962-8964401PA Status: Production 8 ld CerDIP 8 Mil Tube, 48 $40.09 $36.24 N  Material Info PCN Purchase
AD844ACHIPS Status: Production CHIPS OR DIE 0 Ind Tray, 100 - $6.67 Y  Material Info Notify Me Contact ADI
AD844AN Status: Production 8 ld PDIP 8 Ind Tube, 50 $4.14 $3.09 N  Material Info PCN Purchase
AD844ANZ Status: Production 8 ld PDIP 8 Ind Tube, 50 $3.76 $2.81 Y  Material Info PCN Purchase
AD844AQ Status: Production 8 ld CerDIP 8 Ind Tube, 48 $7.26 $5.43 N  Material Info PCN Purchase
AD844BQ Status: Production 8 ld CerDIP 8 Ind Tube, 48 $9.76 $7.30 N  Material Info PCN Purchase
AD844JR-16 Status: Last Time Buy 16 ld SOIC - Wide 16 Comm. Tube, 47 $4.74 $3.55 N  Material Info PCN/PDN Purchase
AD844JRZ-16 Status: Production 16 ld SOIC - Wide 16 Comm. Tube, 47 $4.32 $3.23 Y  Material Info PCN Purchase
AD844JRZ-16-REEL Status: Last Time Buy 16 ld SOIC - Wide 16 Comm. Reel, 1000 - $3.23 Y  Material Info PCN/PDN Purchase
AD844JRZ-16-REEL7 Status: Production 16 ld SOIC - Wide 16 Comm. Reel, 250 - $3.23 Y  Material Info PCN Purchase
AD844SCHIPS Status: Production CHIPS OR DIE 0 Mil Tray, 100 $25.51 $23.19 Y  Material Info Notify Me Contact ADI
AD844SQ Status: Production 8 ld CerDIP 8 Mil Tube, 48 $19.73 $18.73 N  Material Info PCN Purchase
AD844SQ/883B Status: Production 8 ld CerDIP 8 Mil Tube, 48 $36.45 $32.80 N  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.


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