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7B33:  Isolated Voltage Input Signal Conditioning Module -100 Hz Bandwidth

Product Details

The 7B Series signal conditioners represent a significant achievement in the provision of cost-effective, isolation-based signal conditioning solutions for the process control industry. The 7B Series are modular, single-channel, plug-in conditioners that accept inputs from a wide range of process control transducers and signals while providing high-level output voltages.

Featuring a maximum nonlinearity of ±0.02% and factory calibrated to guarantee a maximum accuracy specification of ±0.1%, the 7B Series offers superior performance at a lower cost than multipurpose signal conditioners or in-house designs. The 7B Series modules provide 1500 V rms isolation and 120 V rms of field wiring input protection. Furthermore, the power supplies necessary to drive each of the individual module’s input circuitry are internally isolated, enabling the 7B Series modules to offer true channel-to-channel isolation of the input signals. The modules are rated for a nominal power supply input of +24 V dc; and, for maximum flexibility, they will accept supply voltages in the +14 V dc to +35 V dc range.

All modules are packaged in a compact 2.1" x 1.7" x 0.6" (54 mm x 42 mm x 14 mm) durable plastic case that readily accommodates high channel density applications. Each module may be operated in high humidity (noncondensing) environments and is rated over the extended –40°C to +85°C industrial temperature range. All modules feature a simple pinout that allows them to be mixed and matched within a single backplane design. Furthermore, modules are easily serviced since they can be removed and inserted into the backplane with power applied.


  • Accepts Volt Input
  • Current Input with External 250Ω Resistor
  • 100 Hz BW
  • 1-5V or 0-10V Output

Functional Block Diagram for 7B33

Additional 7B Resources: Accessories and Backplanes
Sales and Service: North America (SCS Embedded Tech), Rest of World


Title Content Type File Type
7B33: Isolated, Voltage or Current Input Data Sheet  (Rev 0, 01/1999) (pdf, 529 kB) Data Sheets PDF
AN-535: Digital Input/Output Subsystems  (pdf, 336 kB) Application Notes PDF
7B Series User's Manual  (pdf, 2317 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
7B 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
7B Series Accessories Accessories 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
7B 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
7B Series I/O Subsystem Software Tools
  • SENSORS.ZIP  (zip, 343 kB)
    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)
  • TC_CONV.TXT  (txt, 2 kB)
    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

7B33 Model Options
Model Package Pins Temp.
Price RoHS View PCN/ PDN Check Inventory/
7B33-01-1 Status: Production IOS MODULE 5 Comm. Tray, 1 - N  Material Info Notify Me Purchase
7B33-01-2 Status: Production IOS MODULE 5 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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