BA2902KN-E2

Overview

The BA2902KN-E2 is a quad ground sense operational amplifier from ROHM Semiconductor. It integrates four independent op-amps on a single chip, designed for general-purpose applications with high gain and low power consumption. The device operates on a single supply voltage ranging from +3.0V to +36.0V. Key electrical characteristics include a maximum input offset voltage of 7mV, a typical supply current of 0.7mA, and an output source/sink current capability of 30mA/20mA. It features a wide operating temperature range from -40°C to +125°C.

Feature Summary

• Operable with a single power supply across a wide voltage range
• Input and output stages support ground sense operation
• Low supply current consumption for energy efficiency
• High open-loop voltage gain for signal amplification

Applications

• Current sensing circuits
• Buffer amplifier configurations
• Active filter designs
• Consumer electronics systems

Procurement Notes

Verify the exact package type and suffix against the official ROHM datasheet before ordering. Confirm that the 'KN' designation corresponds to the specific pinout and mechanical dimensions required for your PCB layout. Ensure compatibility with the specified operating temperature range and supply voltage limits for your application environment.

Selection Notes

Select this component when a quad amplifier configuration is needed with ground-sense capabilities. It is suitable for applications requiring a wide single-supply voltage range up to 36V. Consider the 7mV max input offset voltage and 0.7mA supply current for low-power, moderate-precision designs. Verify thermal dissipation requirements if operating at high ambient temperatures or with significant load currents.

Part Context

This part belongs to the BA2902xx series of ground sense operational amplifiers manufactured by ROHM Semiconductor. The series includes dual and quad variants with different temperature ratings and package options. The BA2902 specifically offers four channels in a compact integrated circuit format, distinguishing it from the dual-channel BA2904 series.

Replacement Considerations

BA2902F-E2, BA2902SF-E2, BA2902FV-E2, BA2902SFV-E2