TLC2201 Precision Low-Noise Operational Amplifier

Overview

The TLC2201, TLC2201A, TLC2201B, and TLC2201Y are high-precision, low-noise operational amplifiers (op-amps) manufactured using Texas Instruments' Advanced LinCMOS™ process. These devices are designed to deliver exceptional performance in applications requiring low noise, high precision, and low power consumption. The TLC2201 series is particularly well-suited for instrumentation, medical equipment, and audio applications where signal integrity is critical.

The LinCMOS process technology enables these op-amps to achieve a combination of low input bias current, low offset voltage, and high input impedance, making them ideal for interfacing with high-impedance sensors and precision analog circuits. The TLC2201 family operates over a wide supply voltage range and is available in multiple grades to meet varying performance requirements.

Features

• Low Noise: 11 nV/√Hz at 1 kHz (typical)
• Low Input Bias Current: 1 pA (typical)
• Low Offset Voltage: 500 µV (max) for TLC2201A
• High Gain Bandwidth Product: 2 MHz (typical)
• Wide Supply Voltage Range: ±2.25 V to ±8 V
• Low Power Consumption: 1.4 mA per amplifier (typical)
• High Input Impedance: 10¹² Ω (typical)
• Rail-to-Rail Output Swing: Ensures maximum dynamic range
• Available in Multiple Grades: Standard (TLC2201), A-grade (TLC2201A), B-grade (TLC2201B), and Y-grade (TLC2201Y) for varying performance needs

Applications

The TLC2201 series is designed for precision analog applications where noise and signal integrity are critical. Key application areas include:

• Medical Instrumentation: ECG amplifiers, blood glucose monitors, and other sensitive measurement systems
• Audio Processing: High-fidelity preamplifiers, mixers, and equalizers
• Sensor Signal Conditioning: Bridge amplifiers, thermocouple amplifiers, and strain gauge interfaces
• Test and Measurement Equipment: Precision data acquisition systems and oscilloscope front-ends
• Industrial Control Systems: Process control loops and servo amplifiers

Electrical Characteristics

The following table summarizes the key electrical specifications for the TLC2201 series. All values are typical unless otherwise noted.

DC Characteristics

• Input Offset Voltage: 250 µV (TLC2201A), 500 µV (TLC2201), 750 µV (TLC2201B)
• Input Bias Current: 1 pA
• Input Offset Current: 0.5 pA
• Common-Mode Rejection Ratio (CMRR): 90 dB
• Power Supply Rejection Ratio (PSRR): 100 dB
• Open-Loop Gain: 120 dB

AC Characteristics

• Gain Bandwidth Product: 2 MHz
• Slew Rate: 1.6 V/µs
• Total Harmonic Distortion (THD): 0.001% at 1 kHz
• Equivalent Input Noise Voltage: 11 nV/√Hz at 1 kHz

Power Supply Characteristics

• Supply Voltage Range: ±2.25 V to ±8 V
• Quiescent Current: 1.4 mA per amplifier
• Operating Temperature Range: -40°C to +125°C

Package Information

The TLC2201 series is available in multiple package options to accommodate various PCB layouts and thermal requirements. Below are the available packages:

• PDIP (Plastic Dual In-Line Package): 8-pin, 0.3" width
• SOIC (Small Outline Integrated Circuit): 8-pin, 150 mil body width
• TSSOP (Thin Shrink Small Outline Package): 8-pin, 3 mm x 4.4 mm body
• MSOP (Mini Small Outline Package): 8-pin, 3 mm x 3 mm body

Each package option provides reliable performance and ease of assembly, with the SOIC and TSSOP packages being particularly suitable for space-constrained applications.

Conclusion

The TLC2201 series of precision low-noise operational amplifiers offers an excellent combination of performance, versatility, and reliability for demanding analog applications. With its low noise, high input impedance, and wide supply voltage range, the TLC2201 is well-suited for medical, audio, and industrial applications where signal fidelity is paramount. Multiple package options and performance grades ensure that designers can select the optimal device for their specific requirements.