Texas Instruments

TLC2274MD

TLC2274MD Description

The TLC2274MD from Texas Instruments is a general-purpose quad operational amplifier designed for precision analog applications. Packaged in a 14-SOIC tube, this IC operates over a 4.4V to 16V supply range, making it versatile for both low-voltage and industrial-level designs. With an ultra-low input bias current of 1 pA and a moderate gain bandwidth product of 2.25 MHz, it balances precision and speed for signal conditioning tasks. The ROHS3-compliant device is obsolete but remains relevant for legacy systems due to its robust performance metrics, including a slew rate of 3.6V/µs and 50 mA output current per channel.

TLC2274MD Features

• Low Power Consumption: Draws 4.8 mA per channel (total), ideal for battery-powered systems.
• High Precision: 300 µV input offset voltage ensures accurate signal amplification.
• Wide Supply Range: Supports 4.4V–16V, accommodating diverse power supplies.
• Low Noise: Ultra-low 1 pA input bias current minimizes errors in high-impedance circuits.
• Robust Output: 50 mA output current drives heavier loads than typical op-amps.
• Surface-Mount Design: 14-SOIC package suits compact PCB layouts.

TLC2274MD Applications

The TLC2274MD excels in:

1. Sensor Interfaces: Precision amplification for strain gauges, thermocouples, and photodiodes.
2. Portable Medical Devices: Low power and high accuracy suit ECG/EEG front-ends.
3. Industrial Control Systems: Handles noisy environments with its wide supply range and robust output.
4. Active Filters: 2.25 MHz GBW enables stable performance in audio and signal processing.
5. Legacy Equipment Maintenance: Replaces older op-amps without redesigns due to pin compatibility.

Conclusion of TLC2274MD

While obsolete, the TLC2274MD remains a reliable choice for precision analog designs requiring low noise, wide voltage range, and moderate bandwidth. Its quad-channel integration reduces board space, and TI’s legacy support ensures long-term availability for critical applications. Engineers valuing low-power accuracy in industrial, medical, or sensor systems will find this IC a pragmatic solution despite its discontinuation.