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5B34:  Isolated 2-, 3-, or 4-Wire RTD Input Signal Conditioning Module

Product Details

The 5B Series represents an innovative generation of low cost, high performance plug-in signal conditioners. Designed for industrial applications, these modules incorporate a new circuit design utilizing transformer-based isolation and automated surface mount manufacturing technology. They are compact, economical components whose performance exceeds that available from more expensive devices. Combining 1500 V rms continuous CMV isolation, ±0.05% calibrated accuracy, small size and low cost, the 5B Series is an attractive alternative to expensive signal conditioners and in-house designs.

All modules are hard potted and identical in pinout and size (2.25" x 2.25" x 0.60"). They can be mixed and matched, permitting users to address their exact needs, and may be changed without disturbing field wiring. The isolated input modules provide 0 V to +5 V or 65 V outputs and accept J, K, T, E, R, S and B thermocouples; 100 Ohms platinum, 10 Ohms copper and 120 Ohms nickel RTDs, full or half bridge strain gages; mV, V, 4-20 mA or 0-20 mA, and wide bandwidth (10 kHz) mV and V signals. These modules feature complete signal conditioning functions including 240 V rms input protection, filtering, chopper stabilized low drift (±1 µV/°C), amplification, 1500 V rms isolation, linearization for RTD and thermocouple (with 5B47) inputs and sensor excitation when required. The output module converts a 0 V to +5 V input to an isolated 4-20 mA or 0-20 mA process current signal. All modules feature excellent common mode rejection and meet ANSI/IEEE-C37.90.1-1989 surge withstand specs.

The 5B Series provides system designers with an easy to use solution for analog I/O in a minimum of board space. The modules' simple pinout and easy mechanical application simplify design.

There are also a number of backplanes which provide a complete signal conditioning solution for end users. Each backplane incorporates screw terminals for field wiring inputs and outputs and cold junction compensation sensors for thermocouple applications. Nineteen-inch relay rack compatible units that can hold up to sixteen modules are available.


  • Accepts RTD Inputs
  • Sensor Excitation and Lead Compensation
  • Linearized Output vs. Sensor Temperature
  • 0-5V Output
  • 4 Hz BW

Functional Block Diagram for 5B34


Title Content Type File Type
5B34: Isolated Linearized RTD Input Data Sheet  (Rev 0, 01/1999) (pdf, 693 kB) Data Sheets PDF
AN-529: 5B Series Signal Conditioning Subsystems in RFI/EMI Fields  (pdf, 24 kB) Application Notes PDF
AN-535: Digital Input/Output Subsystems  (pdf, 336 kB) Application Notes PDF
AN-533: Applying 5B Series Backplanes and Mounting Cards  (pdf, 145 kB) Application Notes PDF
AN-530: Narrow or Wide Bandwidth 5B Series Input Modules: Which is the Right Choice?  (pdf, 18 kB) Application Notes PDF
AN-528: Design Considerations for Designing a 5B Series System  (pdf, 16 kB) Application Notes PDF
5B Series Manual  (pdf, 2274 kB) User Guides PDF
Make vs. Buy! When Should I Reinvent the Wheel?
(Analog Dialogue, Vol. 33, No. 10, November-December, 1999)
Analog Dialogue HTML
5B Series Backplanes and Mounting Cards Backplanes HTML
5B Series Custom Configuration Ranges Configuration Guides HTML
5B Series Configuration Guide Configuration Guides HTML
IOS Custom Product Worksheet
As a Design Subcontractor, IOS believes it essential to engage with our customers early in the development cycle. Complete the form and it will be reviewed and you will be contacted by one of our design specialists.
Custom Product Worksheet HTML
5B Series Accessories Accessories HTML
5B Series Power Supplies Power Supplies HTML
Selecting the Right Signal Conditioning Series for Your Application Overview HTML
All Series Modules Overview HTML
IOS 3 Year Warranty  (pdf, 23 kB) Overview PDF
5B Series Overviews Overview HTML
IOS Short Form Brochure  (pdf, 2298 kB) Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
5B I/O Subsystem Software Tools
  • 5BCUSTOM.ZIP  (zip, 2111 kB)
    5B Custom Program for Windows 3.1. 5B Custom program assists users of 5B Series of signal conditioners in selecting Custom-Ranged 5B Modules. The program also lists general 5B information, ranges, application notes, etc... [D/L Time 22.5 min @ 14.4Kbps]. 2162562 01-22-96
    Steps on how to deal with noise with the 5B modules. 4096 10-27-93 (txt, 4,096 bytes)
    Windows Conversion Utility Program for common temperature sensing devices. Sensors (Ver 1.2) Dated: Feb 15, 1994. 351525 08-24-95 (zip, 351,525 bytes)
    Simple steps explaining Temperature Conversion for our Thermocouple Modules (3B, 5B, 7B). 1920 07-09-93 (txt, 2,136 bytes)
I/O Subsystem Software Tools 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

5B34 Model Options
Model Package Pins Temp.
Price RoHS View PCN/ PDN Check Inventory/
5B34-01 Status: Production IOS MODULE 14 Comm. Tray, 1 - N  Material Info Notify Me Purchase
5B34-02 Status: Production IOS MODULE 14 Comm. Tray, 1 - N  Material Info Notify Me Purchase
5B34-03 Status: Production IOS MODULE 14 Comm. Tray, 1 - N  Material Info Notify Me Purchase
5B34-04 Status: Production IOS MODULE 14 Comm. Tray, 1 - N  Material Info Notify Me Purchase
5B34-C-01 Status: Production IOS MODULE 14 Comm. Tray, 1 - N  Material Info Notify Me Purchase
5B34-C-02 Status: Production IOS MODULE 14 Comm. Tray, 1 - N  Material Info Notify Me Purchase
5B34-CUSTOM Status: Production IOS MODULE 14 Comm. Tray, 1 - N  Material Info Notify Me Contact ADI
5B34-N-01 Status: Production IOS MODULE 14 Comm. Tray, 1 - N  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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