Analog Devices Inc. 5B30-05-MB

Overview

5B30-05-MB from Analog Devices is a single-channel isolated voltage input signal conditioner that amplifies, filters, protects, and isolates millivolt-level analog signals. It accepts ±50 mV input range, delivers 0 V to +5 V output, provides 1500 V_rms continuous isolation, and features chopper-stabilized amplification with ±1 µV/°C input offset drift-used in industrial temperature monitoring systems interfacing thermocouples or strain gauges.

For engineers reviewing the 5B30-05-MB datasheet, 5B30-05-MB pinout, 5B30-05-MB application, or 5B30-05-MB equivalent, key selection criteria include input protection rating (240 V_rms), common-mode rejection (160 dB at 50/60 Hz), output enable control logic thresholds, hot-swap capability, and compliance with FM Class 1 Div 2 and CSA hazardous location standards.

Technical Context

The 5B30-05-MB employs transformer-coupled isolation with proprietary modulation for linear signal transfer and includes a chopper-stabilized input amplifier delivering ±1 µV/°C input offset drift and ±0.05% span accuracy at +25°C. Its four-Hz low-pass filter provides enhanced 50/60 Hz normal- and common-mode noise rejection.

It features fully floating differential field-side inputs, no input grounding required, and an active-low output enable switch with logic "0" ≤ +1 V and logic "1" ≥ +2.5 V. The output common must remain within ±3 V of power common, and it withstands 240 V_rms continuous input overvoltage without damage.

Key Specifications

Pinout & Package

5B30-05-MB uses a 4-pin screw-terminal field-side interface in a compact potted module measuring 57.8 mm × 59.1 mm × 15.1 mm. Pin assignments are standardized across all 5B Series modules for backplane compatibility.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar isolated voltage input conditioning applications.

Compared with 5B30-05 and ADAM-4017+, the 5B30-05-MB uniquely combines transformer isolation, hot-swap capability, and integrated mounting hardware-enabling direct replacement in legacy 5B backplanes while maintaining mechanical stability in high-vibration environments.

Availability

5B30-05-MB is available at Aetrix Electronics and suitable for industrial temperature monitoring, pressure transducer interfacing, flow meter signal conditioning, and rotational speed monitoring requiring stable component supply and long-term lifecycle support.

Supply support for 5B30-05-MB 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, millivolt sensitivity, and hazardous-location certification in a plug-in module format compatible with standard backplanes.

FAQ

What is the input impedance of the 5B30-05-MB when powered on?

The 5B30-05-MB has a powered-on input resistance of 5 MΩ, enabling accurate measurement of high-impedance sources like thermocouples and unbuffered bridge sensors without loading error. This value is confirmed in the official Analog Devices 5B30/5B31 Rev. 0 datasheet, Page 4. The 5B30-05-MB maintains this specification across its full operating temperature range of –25°C to +85°C.

Does the 5B30-05-MB require external power supply decoupling?

No, the 5B30-05-MB integrates internal regulation and filtering for its +5 V ±5% supply requirement and draws only 30 mA. Analog Devices specifies no external decoupling capacitors are needed when used with compliant backplanes such as the 5B01 or 5B08. The 5B30-05-MB's internal design ensures stable operation even with moderate supply ripple up to 100 mV_p-p.

Can the 5B30-05-MB output drive a 10 kΩ load?

Yes-the 5B30-05-MB specifies guaranteed performance for loads >50 kΩ, but it can reliably drive 10 kΩ loads with minor degradation: nonlinearity increases by ≤0.01% and gain temperature coefficient degrades to ±35 ppm/°C. This behavior is documented in the "Loads heavier than 50 kΩ" footnote on Page 4 of the 5B30-05-MB datasheet.

Is the 5B30-05-MB certified for use in hazardous locations?

Yes, the 5B30-05-MB carries Factory Mutual (FM) approval for Class 1, Division 2, Groups A, B, C, and D, and CSA certification for the same classification. These approvals confirm its suitability for non-incendive operation where flammable gases may exist only under fault conditions-no additional explosion-proof enclosures are required when installed per the 5B Series User Manual.

How does the output enable function work on the 5B30-05-MB?

The 5B30-05-MB includes an active-low output enable pin (internally tied to backplane logic). When asserted low (≤ +1 V), the output switch turns on; when high (≥ +2.5 V), the output is disabled. If always enabled, the pin must be grounded to power common-exactly as implemented on 5B01/5B08 backplanes. This feature eliminates external multiplexing in multi-channel scan systems.