ROHM expands op amp portfolio for precision electronics

As electronic systems become more complex, demand is increasing for precision analog components capable of improving signal integrity and measurement accuracy in sensor and control systems. In this context, ROHM introduced the TLRx728 and BD728x CMOS operational amplifier series to support precision analog circuit design across multiple industries.

Analog performance parameters for sensor and control circuits
The new operational amplifiers were developed for applications such as automotive electronics, industrial automation and consumer devices, where accurate amplification of sensor signals is required to maintain system performance.

Both series combine key analog performance characteristics including low input offset voltage, low noise voltage density and high slew rate. The TLRx728 series features a typical input offset voltage of 150 µV, while the BD728x series provides 1.6 mV (typ.). Both product families offer a noise voltage density of 12 nV/√Hz at 1 kHz and a slew rate of 10 V/µs.

These characteristics support use in applications such as sensor signal conditioning, current sensing circuits, motor driver control and power supply monitoring, where signal accuracy and response time directly affect control stability.

Rail-to-rail operation and configuration flexibility
The devices feature rail-to-rail input and output capability, enabling full use of the available supply voltage range and supporting wider dynamic range in analog signal processing circuits.

ROHM has also introduced multiple configuration options, including single, dual and quad channel versions. A range of package options is available to support different PCB layouts and space constraints, providing flexibility in electronic system design.

Supporting component selection in electronic design workflows
The TLRx728 and BD728x series were developed as general-purpose high-performance op amps intended to balance performance characteristics across multiple applications rather than targeting a single use case.

The devices have been released across most variants, with selected part numbers following separately. Components are available through distribution channels including DigiKey, Mouser and Farnell, supporting integration into existing electronic component sourcing workflows.

Edited by industrial journalist Aishwarya Mambet, with AI-assistance.

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