STMicroelectronics TSZ121ICT Zero-Drift Operational Amplifier

High-Precision Analog Solutions with STMicroelectronics TSZ121ICT

In today's demanding electronic design landscape, engineers require components that deliver exceptional accuracy while maintaining operational efficiency. The STMicroelectronics TSZ121ICT zero-drift operational amplifier emerges as a cutting-edge solution for applications requiring ultra-low offset voltage and exceptional stability over time and temperature. This SC70-5 packaged device combines advanced chopper-stabilization technology with modern power efficiency metrics to address the needs of precision measurement systems across multiple industries.

Advanced Zero-Drift Architecture

At the core of the TSZ121ICT's performance lies its proprietary zero-drift architecture, which effectively eliminates traditional op-amp limitations. With a guaranteed maximum input offset voltage of just 1µV and a temperature drift specification of 0.01µV/°C, this device maintains signal integrity even in challenging thermal environments. The patented chopping technique ensures continuous calibration of offset errors, making it particularly suitable for applications where long-term stability is paramount.

Operating from a wide 1.8V to 5.5V supply range, the TSZ121ICT accommodates both single-supply and dual-supply configurations. Its rail-to-rail output stage maximizes dynamic range in low-voltage systems, while the 400kHz gain-bandwidth product enables accurate signal conditioning in precision measurement equipment. The 0.19V/µs slew rate strikes an optimal balance between response time and noise performance.

Power Efficiency Meets Performance

Engineered for modern energy-conscious designs, this operational amplifier draws just 31µA of supply current while maintaining full functionality. This ultra-low power consumption makes it an ideal choice for battery-powered instrumentation, portable medical devices, and wireless sensor networks where extended operating life is critical. The combination of high precision and low power dissipation enables designers to create systems that meet stringent energy efficiency standards without compromising performance.

Industrial-Grade Reliability

Housed in the industry-standard SC70-5 surface-mount package, the TSZ121ICT combines space-saving design with robust thermal performance. The device is specified across the full industrial temperature range (-40°C to 125°C), ensuring reliable operation in demanding environments. Its 70pA input bias current specification enables direct interface with high-impedance sensors without introducing significant error terms.

This operational amplifier finds particular application in precision data acquisition systems, strain gauge amplifiers, thermocouple interfaces, and other measurement equipment where maintaining signal integrity is critical. The device's inherent stability reduces the need for periodic system recalibration, lowering total ownership costs in industrial automation and test equipment applications.

Design Flexibility

The TSZ121ICT's design philosophy emphasizes versatility across multiple application domains. Its single-supply capability simplifies power supply design in modern electronics, while the rail-to-rail output maximizes usable signal range. The 18mA output current capability allows direct driving of heavy capacitive loads, expanding its applicability in buffer and line-driver configurations.

Tags: Low Power Amplifier, Precision Electronics, Industrial Measurement Devices