TP5552-SR

Instrumentation, Op Amps, Buffer Amps Overview

The TP5552-SR is a dual-channel, zero-drift operational amplifier from the TP555X family by 3PEAK. It features ultra-low noise and rail-to-rail input/output capabilities with a supply voltage range of 1.8 V to 5.5 V. Key electrical parameters include a maximum offset voltage of 5 μV, a maximum offset drift of 0.05 µV/°C, and a gain-bandwidth product of 3.5 MHz. The device consumes 550 μA per amplifier at room temperature and offers high CMRR and PSRR of 130 dB. It operates within a temperature range of -40°C to 125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Chopper-stabilized zero-drift architecture eliminates flicker noise and minimizes offset voltage drift over time and temperature.
• Rail-to-rail input and output swing maximizes signal-to-noise ratio across the full supply voltage range.
• Ultra-low input offset voltage and low noise density ensure high precision in DC and low-frequency applications.
• High common-mode rejection ratio and power supply rejection ratio provide robust performance against interference.

Instrumentation, Op Amps, Buffer Amps Applications

• Medical instrumentation requiring high precision and low noise
• Temperature measurement systems utilizing thermistors or RTDs
• Precision current sensing circuits
• Low drift, low frequency ADC drivers
• Process control systems and precision voltage reference buffers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific package suffix matches the required form factor; the SR suffix indicates SOP-8 packaging. Confirm that the ordering code aligns with the desired quantity per reel as specified in the order information table. Ensure compatibility with standard surface mount assembly processes for the selected package type. Validate that the component meets RoHS and halogen-free requirements if mandated by project specifications.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select the TP5552-SR when dual-channel precision is required with minimal offset drift. Consider this part for applications demanding low noise without a 1/f noise corner down to 0.1 Hz. Evaluate the 550 μA quiescent current per channel against power constraints. Ensure the 3.5 MHz bandwidth and 2.5 V/μs slew rate meet the dynamic signal requirements of the design.

Instrumentation, Op Amps, Buffer Amps Part Context

The TP5552-SR belongs to the TP555X family of zero-drift op-amps, which includes single (TP5551) and quad (TP5554) variants. This family utilizes an auto-calibration technique with a continuous-time signal path to achieve high precision. The dual-channel configuration allows for cost-effective implementation of differential amplifiers or dual sensor interfaces in compact designs.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct functional substitutes within the same family include the TP5551 (single channel) and TP5554 (quad channel). Verify pinout compatibility when replacing with other packages like MSOP-8 (TP5552-VR). Cross-reference with other chopper-stabilized amplifiers only if electrical parameters such as offset voltage and bandwidth are strictly matched.

Instrumentation, Op Amps, Buffer Amps FAQ

Does the TP5552 have a 1/f noise corner?

No, the TP5552 is a chopper-stabilized amplifier designed to have no 1/f noise corner down to 0.1 Hz, significantly reducing low-frequency noise compared to standard amplifiers.

What is the input bias current typical value?

The typical input bias current is 50 pA, which can increase to 200 pA over the full operating temperature range.

How does the device handle input over-voltage conditions?

The inputs have internal ESD protection diodes to the supply rails. If an input exceeds the supply rails by more than 300 mV, external current-limiting resistors must be used to prevent excessive current flow that could damage the device.