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Home > Products > Sensors, Transducers > Sensor, Transducer Amplifiers

Analog Devices Inc. 5B37-B-17-FC

Name: 5B37-B-17-FC
Brand: Analog Devices Inc.
SKU: 5B37-B-17-FC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 5B37-B-17-FC

Manufacturer:: Analog Devices Inc.

Category:: Sensor, Transducer Amplifiers

Package:

Datasheet:: 5B37-B-17-FC.pdf

Description:: ISOLATED LINEARIZED RTD INPUT

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Inventory:2,119

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Product details

Overview

5B37-B-17-FC from Analog Devices is a single-channel isolated thermocouple input signal conditioner for Type B thermocouples, delivering 0 to +5 V isolated output with ±0.05% span accuracy, 1500 V_rms continuous input-to-output isolation, and 4 Hz bandwidth filtering. It performs cold-junction compensation (±0.25°C @ +25°C), chopper-stabilized amplification (±1 µV/°C input offset drift), and withstands 240 V_rms at screw terminals-used in industrial temperature monitoring systems requiring hazardous-area compliance.

For engineers reviewing the 5B37-B-17-FC datasheet, 5B37-B-17-FC pinout, 5B37-B-17-FC application, or 5B37-B-17-FC equivalent, key selection criteria include thermocouple type support (Type B), open-circuit detection behavior (upscale response), input protection rating (240 V_rms continuous), cold-junction compensation accuracy, and FM/CSA Class 1 Division 2 certification for nonincendive operation.

Technical Context

The 5B37-B-17-FC implements transformer-based galvanic isolation with proprietary modulation for linear signal recovery, featuring a fully floating differential field-side input that eliminates grounding requirements. Its chopper-stabilized amplifier ensures low-drift gain (±0.0025%/°C) and stable zero-scale offset subtraction via laser-trimmed reference.

Internal multi-pole low-pass filtering provides 4 Hz –3 dB cutoff, yielding 60 dB normal-mode rejection at 60 Hz and 160 dB common-mode rejection with 1 kΩ source imbalance. The module integrates an active-low enable-controlled series output switch and requires output common to remain within ±3 V of power common.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Type	Type B thermocouple (0°C to +1800°C range)
Output Range	0 V to +5 V, low-impedance buffered output (50 Ω)
Isolation Rating	1500 V_rms continuous input-to-output; meets ANSI/IEEE C37.90.1 transient immunity
Accuracy	±0.05% span ±10 µV RTI ±0.05% of Vz + CJC sensor error
Bandwidth	4 Hz (–3 dB), enabling high-noise rejection for millivolt-level thermocouple signals
Cold-Junction Comp.	±0.25°C initial error @ +25°C; ±0.5°C over +5°C to +45°C ambient
Input Protection	Withstands 240 V_rms continuous at screw terminals without damage

Pinout & Package

Package: 2.275" × 2.375" × 0.595" (57.8 mm × 59.1 mm × 15.1 mm) potted module with standardized 5B Series footprint and screw-terminal field interface.

Pin/Terminal	Circuit Role	Design Meaning
1	–EXC	Negative excitation terminal; used for optional sensor excitation or open-circuit detection resistor connection
2	LO	Low-side thermocouple input; forms differential pair with HI; floating and ungrounded
3	HI	High-side thermocouple input; forms differential pair with LO; fully isolated from power/output side
4	n/c	No connection; unused terminal per functional block diagram and pin table

Key Features

Feature	Design Value
Transformer-based isolation	1500 V_rms continuous barrier with proprietary modulation for stable linearity and no ground-loop dependency
Chopper-stabilized amplifier	±1 µV/°C input offset drift enables stable microvolt-level thermocouple signal amplification over temperature
Integrated cold-junction compensation	Uses backplane-mounted AC1361 sensor to correct parasitic thermocouple errors at terminals, achieving ±0.25°C accuracy
Open thermocouple detection	Generates predictable upscale output (not downscale) on open-circuit; configurable via external 47 MΩ resistor across Terminals 1 & 3
EMC robustness	Meets EN50082-1/EN50081-2; <0.1% FS error under 10 V/m RFI up to 1 GHz when installed per manual

Applications

Industrial Temperature Monitoring	Hazardous Area Process Control
Use Scenario: Continuous temperature measurement of molten metal in foundry furnaces using Type B thermocouples exposed to EMI-rich 4–20 mA loop environments. IC Role / Device Role / Timing Role: Isolated signal conditioner converting raw Type B thermocouple mV output into noise-immune 0–5 V analog signal for PLC ADC input. Use Value: 1500 V_rms isolation and 160 dB CMR prevent ground-loop corruption; 4 Hz filtering rejects 60 Hz line noise and harmonics.	Use Scenario: Monitoring reactor vessel temperature in petrochemical refineries where flammable gas may be present only during fault conditions. IC Role / Device Role / Timing Role: FM- and CSA-certified nonincendive signal conditioner enabling safe thermocouple interfacing in Class 1, Division 2, Groups A–D locations. Use Value: Certified operation without explosion-proof enclosures; 240 V_rms input protection prevents field-side surge damage to control system.
Microcontroller-Based Data Acquisition	Programmable Logic Controller I/O Expansion
Use Scenario: Adding thermocouple inputs to embedded ARM-based DAQ systems with limited PCB space and no dedicated isolation circuitry. IC Role / Device Role / Timing Role: Plug-in module providing complete signal conditioning (filtering, CJC, isolation, amplification) as a drop-in subsystem. Use Value: Standardized 5B footprint allows hot-swap replacement; 0–5 V output directly interfaces with 12-bit+ SAR ADCs without level-shifting.	Use Scenario: Retrofitting legacy PLC racks with additional thermocouple channels without modifying backplane wiring or power architecture. IC Role / Device Role / Timing Role: Mix-and-match compatible module operating on shared 5 V supply and mounting sockets, enabling modular I/O scaling. Use Value: Identical pin-out and size (2.27" × 2.32") across all 5B modules simplifies inventory and reduces spare-part complexity.

Industrial Temperature Monitoring

Hazardous Area Process Control

Use Scenario: Continuous temperature measurement of molten metal in foundry furnaces using Type B thermocouples exposed to EMI-rich 4–20 mA loop environments.

IC Role / Device Role / Timing Role: Isolated signal conditioner converting raw Type B thermocouple mV output into noise-immune 0–5 V analog signal for PLC ADC input.

Use Value: 1500 V_rms isolation and 160 dB CMR prevent ground-loop corruption; 4 Hz filtering rejects 60 Hz line noise and harmonics.

Use Scenario: Monitoring reactor vessel temperature in petrochemical refineries where flammable gas may be present only during fault conditions.

IC Role / Device Role / Timing Role: FM- and CSA-certified nonincendive signal conditioner enabling safe thermocouple interfacing in Class 1, Division 2, Groups A–D locations.

Use Value: Certified operation without explosion-proof enclosures; 240 V_rms input protection prevents field-side surge damage to control system.

Microcontroller-Based Data Acquisition

Programmable Logic Controller I/O Expansion

Use Scenario: Adding thermocouple inputs to embedded ARM-based DAQ systems with limited PCB space and no dedicated isolation circuitry.

IC Role / Device Role / Timing Role: Plug-in module providing complete signal conditioning (filtering, CJC, isolation, amplification) as a drop-in subsystem.

Use Value: Standardized 5B footprint allows hot-swap replacement; 0–5 V output directly interfaces with 12-bit+ SAR ADCs without level-shifting.

Use Scenario: Retrofitting legacy PLC racks with additional thermocouple channels without modifying backplane wiring or power architecture.

IC Role / Device Role / Timing Role: Mix-and-match compatible module operating on shared 5 V supply and mounting sockets, enabling modular I/O scaling.

Use Value: Identical pin-out and size (2.27" × 2.32") across all 5B modules simplifies inventory and reduces spare-part complexity.

Equivalent & Alternatives

The following parts are listed as comparable options for similar thermocouple signal conditioning applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADAM-4018-B	8-channel Ethernet-enabled module with built-in 24-bit ADC; no transformer isolation; uses opto-isolation (2500 V_dc)	Requires network infrastructure; supports remote configuration; lacks FM/CSA hazardous-area certification	Select when centralized Ethernet-based monitoring is needed and intrinsic safety is not required.
ISO124P	Single-channel precision isolation amplifier IC (no CJC, no screw terminals); requires external thermocouple interface and cold-junction sensor design	Demands full custom PCB layout; suitable only for OEMs integrating isolation at component level	Select for space-constrained, high-volume designs where board-level integration justifies engineering effort.

Compared with ADAM-4018-B and ISO124P, the 5B37-B-17-FC delivers certified hazardous-area operation, factory-calibrated cold-junction compensation, and plug-and-play screw-terminal interfacing-eliminating both custom hardware development and network dependency while maintaining 1500 V_rms transformer isolation integrity.

Availability

5B37-B-17-FC is available at Aetrix Electronics and suitable for industrial temperature monitoring, hazardous-area process control, and programmable controller I/O expansion requiring stable component supply, long-lifecycle availability, and certified nonincendive operation.

Supply support for 5B37-B-17-FC includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and industrial control.

The 5B Series was designed specifically for rugged industrial signal conditioning-delivering transformer isolation, cold-junction compensation, and FM/CSA certification in a standardized, hot-swappable module format for factory automation and process instrumentation.

FAQ

What thermocouple types does the 5B37-B-17-FC support?

The 5B37-B-17-FC is specifically configured for Type B thermocouples, covering a range of 0°C to +1800°C. Unlike generic 5B37 variants, this model is factory-set for Type B input characteristics-including its unique Seebeck coefficient and cold-junction compensation curve-and is not user-reconfigurable for other thermocouple types.

Does the 5B37-B-17-FC require external cold-junction compensation hardware?

No. The 5B37-B-17-FC uses the AC1361 cold-junction sensor integrated into compatible 5B Series backplanes (e.g., 5B37-B-17-FC must be mounted on an FM/CSA-certified backplane with AC1361). This eliminates need for discrete CJC circuitry and ensures ±0.25°C accuracy at +25°C ambient.

How does the 5B37-B-17-FC indicate an open thermocouple fault?

The 5B37-B-17-FC provides an upscale open-circuit response by default-output rises above +5 V when the thermocouple loop opens. To configure downscale response instead, connect a 47 MΩ, 0.25 W resistor across screw terminals 1 (–EXC) and 3 (HI), per the functional description in Rev. 0 datasheet page 2.

What is the maximum continuous input voltage the 5B37-B-17-FC can withstand?

The 5B37-B-17-FC withstands 240 V_rms continuously at its input screw terminals (Terminals 2 and 3) without damage or performance degradation. This protects downstream control systems from field-side overvoltage faults and satisfies industrial surge immunity requirements per ANSI/IEEE C37.90.1-1989.

Is the 5B37-B-17-FC certified for use in hazardous locations?

Yes. The 5B37-B-17-FC carries Factory Mutual (FM) and Canadian Standards Association (CSA) approvals for Class 1, Division 2, Groups A, B, C, and D-certifying it as nonincendive equipment suitable for locations where flammable gases may exist only under fault conditions, without requiring explosion-proof enclosures.

5B37-B-17-FC Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Packaging:: Bulk

Product Status:: Active

Amplifier Type:: Analog Output

Voltage - Supply:: 4.75V ~ 5.25V

Output Type:: Analog

Current - Supply:: 30 mA

Operating Temperature:: -40°C ~ 85°C

Mounting Type:: Surface Mount

5B37-B-17-FC FAQ

1.How can I place an order for 5B37-B-17-FC through Aetrix?

Please submit a Request for Quotation (RFQ) for 5B37-B-17-FC on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 5B37-B-17-FC reliable?

The price and inventory of 5B37-B-17-FC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5B37-B-17-FC is usually 5 days.

3.What payment methods are accepted for 5B37-B-17-FC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5B37-B-17-FC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 5B37-B-17-FC?

5B37-B-17-FC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 5B37-B-17-FC order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 5B37-B-17-FC?

For technical support, including 5B37-B-17-FC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5B37-B-17-FC requirements.

6.How does Aetrix verify that 5B37-B-17-FC is sourced from the original manufacturer or authorized distributors?

All 5B37-B-17-FC products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 5B37-B-17-FC meets industry standards.

7.What is the process for return or replacement of 5B37-B-17-FC?

All 5B37-B-17-FC units undergo pre-shipment inspection (PSI). If there is an issue with 5B37-B-17-FC, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 5B37-B-17-FC part is unused and in its original packaging.

Return procedure for 5B37-B-17-FC:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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