TPA6531N-S6TR

Instrumentation, Op Amps, Buffer Amps Overview

The TPA6531N-S6TR is a single-channel CMOS operational amplifier from the TPA653x series, housed in an SOT23-6 package. It operates on a supply voltage range of 1.75 V to 5.5 V and supports an extended temperature range of −40°C to 125°C. Key electrical parameters include a gain-bandwidth product of 300 kHz, a slew rate of 0.15 V/μs, and a maximum input offset voltage of ±1.5 mV. The device features rail-to-rail input and output capabilities, low quiescent current of 25 μA per channel, and low 0.1-Hz to 10-Hz voltage noise of 1 μVPP.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Rail-to-rail input and output capability with complementary PNP/NPN input stage architecture
• Low power consumption with maximum 25 μA quiescent current per channel
• Integrated shutdown control via dedicated /SHDN pin for active and low-power modes
• Low 1/f noise performance utilizing bipolar transistor input pair

Instrumentation, Op Amps, Buffer Amps Applications

• Sensor signal conditioning
• Instrumentation systems
• Industrial control circuits
• IoT devices

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify that the specific part number matches the required SOT23-6 package configuration. Confirm the presence of the shutdown functionality associated with the 'N' suffix. Ensure compatibility with the specified 1.75 V to 5.5 V supply voltage range and the −40°C to 125°C operating temperature requirements for your application environment.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when low power consumption is critical alongside moderate bandwidth requirements. The inclusion of a shutdown pin makes it suitable for battery-operated systems requiring power management. Consider the rail-to-rail input/output swing if interfacing with single-supply logic or sensors. Verify that the 300 kHz gain-bandwidth product meets the signal frequency needs of the design.

Instrumentation, Op Amps, Buffer Amps Part Context

This component belongs to the TPA653x series of low-power operational amplifiers manufactured by 3PEAK. The series includes single (TPA6531), dual (TPA6532), and quad (TPA6534) variants. The TPA6531N specifically denotes the single-channel version with shutdown capability, distinguishing it from the standard TPA6531 which lacks the shutdown pin.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct substitutes within the same family include TPA6531 without the shutdown feature. For designs not requiring shutdown, the TPA6531 in SOT23-5 may be considered if pinout compatibility allows. No other cross-manufacturer replacements are confirmed in the provided documentation.

Instrumentation, Op Amps, Buffer Amps FAQ

How does the shutdown function operate?

The device enters shutdown mode when the /SHDN pin receives a low-level input voltage. It returns to active mode with a high-level input. An internal 10-MΩ pull-up resistor keeps the device active by default.

What is the input common-mode voltage range?

The input common-mode voltage range extends from below the negative supply rail to 100 mV beyond the positive supply rail, enabling true rail-to-rail input operation.