TP2121-CR

Instrumentation, Op Amps, Buffer Amps Overview

The TP2121-CR is a single-channel, ultra-low-power precision CMOS operational amplifier manufactured by 3PEAK. It operates from a single supply of 1.8 V to 6.0 V or dual supplies of ±0.9 V to ±3.0 V. Key electrical specifications include a maximum quiescent current of 950 nA per amplifier, a gain-bandwidth product of 18 kHz, and a slew rate of 10 mV/µs. The device features rail-to-rail input and output capabilities, an input offset voltage of 1.5 mV (max), and an input bias current of 1 pA (typ). It is designed for unity-gain stability with capacitive loads up to 1,000 nF.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-low power consumption with typical supply current of 600 nA
• Rail-to-rail input and output voltage range
• Precision analog trim for low offset voltage and drift
• Robust ESD protection ratings

Instrumentation, Op Amps, Buffer Amps Applications

• Battery current sensing in portable devices
• Buffering high-impedance chemical sensors such as pH probes
• Amplifying signals from portable gas sensors
• Low-power filters and threshold detectors

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific package suffix 'CR' corresponds to the SOT353 (SC70-5) footprint when ordering. Confirm that the operating environment remains within the specified temperature range of -40°C to 125°C. Ensure proper bypass capacitance is placed near the supply pins to maintain stability and performance. Validate component suitability for your specific application requirements before finalizing procurement.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring minimal power draw while maintaining signal integrity over wide common-mode ranges. The high input impedance and low bias current make it suitable for interfacing with high-impedance sources. Consider the 18 kHz bandwidth limit when designing for higher frequency signal processing tasks.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the TP212x series of nanopower operational amplifiers. The family includes single, dual, and quad channel variants sharing similar electrical characteristics. The 'C' in the model number typically denotes the SOT353 package variant, distinguishing it from other packaging options like SOT23-5.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct pin-compatible replacements within the same manufacturer's portfolio include the TP2121-TR (SOT23-5 package). Verify that any substitute maintains the required 1.8 V minimum supply voltage and 1 pA input bias current specifications.