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AD526:  Software Programmable Gain Amplifier

Product Details


The AD526 is a single-ended, monolithic software programmable gain amplifier (SPGA) that provides gains of 1, 2, 4, 8 and 16. It is complete, including amplifier, resistor network and TTL-compatible latched inputs, and requires no external components.

Low gain error and low nonlinearity make the AD526 ideal for precision instrumentation applications requiring programmable gain. The small signal bandwidth is 350 kHz at a gain of 16. In addition, the AD526 provides excellent dc precision. The FET-input stage results in a low bias current of 50 pA. A guaranteed maximum input offset voltage of 0.5 mV max (C grade) and low gain error (0.01%, G = 1, 2, 4, C grade) are accomplished using Analog Devices' laser trimming technology.

To provide flexibility to the system designer, the AD526 can be operated in either latched or transparent mode. The force/sense configuration preserves accuracy when the output is connected to remote or low impedance loads.

The AD526 is offered in one commercial (0°C to +70°C) grade, J, and three industrial grades, A, B and C, which are specified from -40°C to +85°C. The S grade is specified from -55°C to +125°C. The military version is available processed to MIL-STD 883B, Rev C. The J grade is supplied in a 16-pin plastic DIP, and the other grades are offered in a 16-pin hermetic side-brazed ceramic DIP.

FEATURES and BENEFITS

  • Digitally Programmable Binary
    Gains from 1 to 16
  • Two-Chip Cascade Mode Achieves
    Binary Gain from 1 to 256
  • Gain Error:
    0.01% Max, Gain = 1, 2, 4 (C Grade)
    0.02% Max, Gain = 8, 16 (C Grade)
    0.5 ppm/°C Drift Over Temperature
  • Low Nonlinearity: ±0.005% FSR
    Max (J Grade)
  • Fast Settling Time
    10 V Signal Change:
    0.01% in 4.5 µs (Gain = 16)
    Gain Change:
    0.01% in 5.6 µs (Gain = 16)
  • Excellent DC Accuracy:
    Offset Voltage: 0.5 mV Max
    (C Grade) Offset Voltage Drift:
    3 µV/°C(C Grade)
  • TTL-Compatible Digital Inputs

Functional Block Diagram for AD526

AD526 Diagram
Functional Block Diagram for AD526

Documentation

Title Content Type File Type
AD526: Software Programmable Gain Amplifier Data Sheet (Rev D, 08/1999) (pdf, 464 kB) Data Sheets PDF
AD526 Military Data Sheet  (Rev B, 08/1998) (pdf) Data Sheets PDF
AN-282: Fundamentals of Sampled Data Systems  (pdf, 2131 kB) Application Notes PDF
AN-244: A User's Guide to I.C. Instrumentation Amplifiers  (pdf, 522 kB) Application Notes PDF
AN-245: Instrumentation Amplifiers Solve Unusual Design Problems  (pdf, 543 kB)
Traditionally Considered Only for Transducer-Conditioning Applications, Instrumentation Amplifiers Bring Unique Performance Benefits to a Range of Other Applications as Well.
Application Notes PDF
AN-671: Reducing RFI Rectification Errors in In-Amp Circuits  (pdf, 208 kB) Application Notes PDF
AN-589: Ways to Optimize the Performance of a Difference Amplifier  (pdf, 115 kB)
This Application Note presents several ways to build and optimize the performance of a discrete difference amplifier. It also recommends amplifiers that will make the overall solution cost/performance competitive with monolithic instrument amplifiers.
Application Notes PDF
A Designer's Guide to Instrumentation Amplifiers (3rd Edition) Design Handbooks HTML
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
Auto-Zero Amplifiers  (doc, 75 kB)
A wide variety of electronic applications, especially those involving very small input signals, require signal paths with very low offset voltage and offset voltage drift over time and temperature.
Technical Articles DOC
High-performance Adder Uses Instrumentation Amplifiers
Make an adder circuit using instrumentation amplifiers to increase input impedance.
(EDN, 9/3/2009)
Technical Articles HTML
Input Filter Prevents Instrumentation-amp RF-Rectification Errors
by Charles Kitchin, Lew Counts, and Moshe Gerstenhaber, Analog Devices, Inc. (EDN, 11/13/2003)
Technical Articles HTML
The AD8221 - Setting a New Industry Standard for Instrumentation Amplifiers  (pdf, 582 kB) Technical Articles PDF
Applying Instrumentation Amplifiers Effectively: The Importance of an Input Ground Return  (pdf, 508 kB) Technical Documentation 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
Leading Inside Advertorials: Applying Instrumentation Amplifiers Effectively–The Importance of an Input Ground Return  (pdf, 121 kB) Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary 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

AD526 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD526AD Status: Production 16 ld Side-Brazed CerDip 16 Ind Tube, 23 $24.42 $22.08 N  Material Info PCN Purchase
AD526ADZ Status: Production 16 ld Side-Brazed CerDip 16 Ind Tube, 23 $25.03 $22.62 Y  Material Info PCN Purchase
AD526BD Status: Production 16 ld Side-Brazed CerDip 16 Ind Tube, 23 $28.18 $25.46 N  Material Info PCN Purchase
AD526BDZ Status: Production 16 ld Side-Brazed CerDip 16 Ind Tube, 23 $25.84 $23.34 Y  Material Info PCN Purchase
AD526CDZ Status: Production 16 ld Side-Brazed CerDip 16 Ind Tube, 23 $33.64 $30.39 Y  Material Info PCN Purchase
AD526JN Status: Production 16 ld PDIP 16 Comm. Tube, 25 $8.57 $7.73 N  Material Info PCN Purchase
AD526JNZ Status: Production 16 ld PDIP 16 Comm. Tube, 25 $7.57 $6.85 Y  Material Info PCN Purchase
AD526SD Status: Production 16 ld Side-Brazed CerDip 16 Mil Tube, 23 $61.60 $60.38 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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