TLC084CN

Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

The TLC084CN is an instrumentation amplifier (IA) manufactured by Texas Instruments. It is a dual-channel low-power monolithic integrated circuit designed to provide excellent performance in a wide variety of applications. With its small real estate, low-cost and high precision, it is ideal for a variety of uses in medical, industrial and consumer markets.

Applications

The TLC084CN is a low-power monolithic integrated amplifier that is most commonly used for signal processing applications, such as instrumentation amplifiers, comparators, and buffer amplifiers. It is recognized for its high precision and low-power consumption. It is suitable for applications that require a low-noise and low-distortion performance. Some popular uses for the TLC084CN are in medical instrumentation, automotive, industrial, and consumer electronics. Specifically, they are used in biomedical sensors, pressure monitors, accelerometers, analysers, audio playback/recording equipment, power supplies and microcontroller-based applications.

Working Principle

The TLC084CN operates as an instrumentation amplifier, a type of differential amplifier that provides high-precision and low-offset. It utilizes an amplified virtual ground to ensure balanced output signals with low distortion and improved dynamic range. The circuit board consists of two identical amplification stages and an output stage. Each amplification stage consists of several transistors and capacitors connected in a feedback loop to ensures each stage amplifies its input signal accurately. The output stage consists of two current mirrors allowing for a low power output that is proportional to the input. This low power output provides improved signal integrity and noise rejection.

Performance

The TLC084CN has an excellent performance, with a wide frequency response from DC to 4kHz, allowing for a wide variety of signals to be amplified. The high-gain accuracy is ±0.05% over a temperature range of -40°C to 125°C. The power-supply range is 3V to 32V, making it suitable for a wide range of applications. The input common-mode voltage range is -0.1V to VCC - 0.1V, providing high flexibility in signal source as well as a wide dynamic range. Finally, the improved input bias current of 5nA ensures low-distortion and noise-free operation.

Conclusion

The TLC084CN is a versatile, low-power and low-cost monolithic differential amplifier with excellent performance, ideal for a variety of uses in medical, industrial and consumer markets. With a wide frequency response and good performance over a range of temperatures, the TLC084CN is an ideal choice for applications that need high-precision, low-offset and low-distortion amplification. The improved input bias current and low power output also provide improved signal integrity and noise rejection.