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HomeProductsIntegrated Circuits (ICs)Linear - Amplifiers - Instrumentation, OP Amps, Buffer AmpsTSV621AILT
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TSV621AILT - STMicroelectronics

Manufacturer Part Number
TSV621AILT
Manufacturer
STMicroelectronics
Allelco Part Number
32D-TSV621AILT
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
84,640 pcs available, New & Original
Parts Description
IC OPAMP GP 1 CIRCUIT SOT23-5
Package
SOT-23-5
Data sheet
TSV621AILT.pdf

PCN Assembly/Origin

New Lead-Frame 01/Sep/2020.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 84640
  • Unit Price: $0.603
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $0.603 $0.60
10+ $0.59 $5.90
30+ $0.58 $17.40
100+ $0.572 $57.20
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

TSV621AILT Tech Specifications
STMicroelectronics - TSV621AILT technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - TSV621AILT

Product Attribute Attribute Value
Manufacturer STMicroelectronics
Voltage - Supply Span (Min) 1.5 V
Voltage - Supply Span (Max) 5.5 V
Voltage - Input Offset 800 µV
Supplier Device Package SOT-23-5
Slew Rate 0.14V/µs
Series -
Package / Case SC-74A, SOT-753
Package Tape & Reel (TR)
Output Type Rail-to-Rail
Product Attribute Attribute Value
Operating Temperature -40°C ~ 125°C
Number of Circuits 1
Mounting Type Surface Mount
Gain Bandwidth Product 420 kHz
Current - Supply 29µA
Current - Output / Channel 74 mA
Current - Input Bias 1 pA
Base Product Number TSV621
Amplifier Type General Purpose

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99

Parts Introduction

TSV621AILT Image
TSV621AILT (1)

Manufacturer Part Number

TSV621AILT

Manufacturer

STMicroelectronics

Introduction

The TSV621AILT is a high-performance, general-purpose operational amplifier (op-amp) from STMicroelectronics, designed for a wide range of applications.

Product Features and Performance

Rail-to-rail output

Wide supply voltage range: 1.5V to 5.5V

Low input offset voltage: 800μV

High gain bandwidth product: 420kHz

Fast slew rate: 0.14V/μs

Low input bias current: 1pA

High output current capability: 74mA

Product Advantages

Excellent accuracy and stability

Wide operating temperature range: -40°C to 125°C

Versatile for various applications

Robust and reliable performance

TSV621AILT Image
TSV621AILT (2)

Key Technical Parameters

Number of Circuits: 1

Amplifier Type: General Purpose

Mounting Type: Surface Mount

Package: SOT-23-5

Quality and Safety Features

RoHS3 compliant

Suitable for applications requiring high reliability and performance

Compatibility

The TSV621AILT is compatible with a wide range of electronic systems and devices.

Application Areas

Instrumentation and measurement equipment

Industrial control systems

Consumer electronics

Medical devices

Product Lifecycle

The TSV621AILT is an active product and is not nearing discontinuation.

Replacement or upgrade options may be available from STMicroelectronics.

Key Reasons to Choose This Product

Excellent performance characteristics, including low offset voltage, high bandwidth, and fast slew rate

Wide operating temperature range and robust design for reliable operation

Versatile for a variety of applications

Proven reliability and quality from a leading semiconductor manufacturer, STMicroelectronics

Frequently Asked Questions(FAQ)

What are the key performance trade-offs when selecting the TSV621AILT for low-power battery-operated applications compared to higher-speed alternatives?
The TSV621AILT offers a supply current of just 29 µA, making it highly suitable for energy-constrained systems such as IoT sensors or portable devices. However, its slew rate of 0.14 V/µs and gain bandwidth product of 420 kHz limit its effectiveness in high-speed signal conditioning tasks where transient response or wideband amplification is required. Designers must balance power efficiency against dynamic performance—using this device in precision DC measurements benefits from its low input bias current (1 pA) and rail-to-rail output, but switching to a faster op-amp becomes necessary when driving capacitive loads at frequencies above several hundred kilohertz.
How does the input offset voltage of the TSV621AILT impact precision measurement circuits, and under what conditions might it necessitate external calibration?
With an input offset voltage of 800 µV, the TSV621AILT can introduce errors exceeding 1% in high-gain DC amplification stages, such as instrumentation amplifiers or sensor interfaces with gain factors greater than 50. In battery-powered thermocouple readout systems or low-level strain gauge measurements, this offset may exceed acceptable tolerances without compensation. While internal trimming is not available on this model, designers often implement software-based nulling routines or select external trimming networks during the layout phase to maintain accuracy over temperature and time.
Can the TSV621AILT reliably drive capacitive loads in feedback configurations, and what design considerations apply?
The TSV621AILT has limited output drive capability in capacitive load environments due to its moderate slew rate and lack of integrated compensation for stability. Driving loads above 10 nF without series isolation resistors can lead to oscillation or ringing, especially in unity-gain buffer configurations. Practical implementations typically include a small series resistor (e.g., 10–50 Ω) between the output and capacitor to dampen peaking and ensure phase margin exceeds 45°. This precaution is particularly important in video signal paths or active filter stages using large feedback capacitors.
In what scenarios would substituting the TSV621AILT with LMV931SN3T1G be more advantageous despite similar pin compatibility?
Although both the TSV621AILT and LMV931SN3T1G are single-supply, rail-to-rail op-amps in SOT-23-5 packages, the LMV931 features significantly lower quiescent current (as low as 7 µA) and operates down to 1.6 V, offering extended battery life in ultra-low-power monitoring applications. If the system prioritizes energy efficiency over speed—such as in wake-on-sensor nodes—the LMV931 becomes preferable. However, the TSV621AILT’s superior input bias current (1 pA vs. ~50 pA typical for the LMV931) provides better precision in high-impedance source applications, creating a clear trade-off between power and noise/precision requirements.
What are the implications of the TSV621AILT’s operating temperature range (-40°C to 125°C) for automotive or industrial deployments?
The extended temperature range up to 125°C makes the TSV621AILT suitable for harsh environments common in automotive control modules or factory automation systems. Its stable input offset and bias current across this span reduce the need for thermal derating in analog front-ends. Nevertheless, long-term reliability depends on proper PCB layout to avoid hot spots near the package, and solder joint integrity under thermal cycling must be verified through accelerated life testing if used in mission-critical applications like engine control units.
How should the TSV621AILT be evaluated when replacing legacy parts like MCP6241UT-E/OT in existing designs?
When migrating from the MCP6241UT-E/OT to the TSV621AILT, attention must be paid to differences in input capacitance, output swing headroom, and supply current. The TSV621AILT consumes less power but has slightly reduced output drive (74 mA vs. 100 mA), which may affect startup behavior in capacitive-load-sensitive circuits. Additionally, the input offset voltage (800 µV max) is higher than some modern CMOS op-amps, potentially impacting accuracy in high-gain loops. A full bench test of transient response, noise floor, and closed-loop gain error under actual load conditions is recommended before production release.
What layout precautions are essential when deploying the TSV621AILT in space-constrained PCBs with multiple analog channels?
Due to its compact SOT-23-5 footprint, the TSV621AILT must be placed close to signal sources to minimize parasitic inductance and capacitance in high-impedance nodes. Ground return paths should be kept short, and decoupling capacitors (typically 100 nF ceramic) must be mounted directly at the VCC and GND pins with minimal trace length. Separation from noisy digital traces and switching regulators is critical given its 420 kHz bandwidth—stray coupling could induce interference in sensitive measurement chains unless proper shielding or guard rings are employed.
Why might a designer choose the TSV621AILT over discrete JFET-input amplifiers despite similar input bias specifications?
While discrete JFET op-amps also offer low input bias currents, the TSV621AILT integrates better matching, lower flicker noise, and consistent rail-to-rail operation across the entire supply range—features absent in most discrete solutions. Its monolithic structure ensures predictable phase margin and simplified compensation, reducing board complexity in single-supply designs. For applications requiring integration into mixed-signal ICs or automated test fixtures, the TSV621AILT provides a reliable, manufacturable alternative that reduces part count and improves yield compared to hybrid designs.
How does the Moisture Sensitivity Level (MSL) rating of 1 for the TSV621AILT influence handling and storage procedures in high-volume manufacturing?
With an MSL rating of 1, the TSV621AILT is exempt from moisture pre-conditioning and can be stored indefinitely in sealed packaging at room temperature. This simplifies inventory management and assembly scheduling in mass production environments, as no bake-out cycles are needed prior to reflow soldering. However, operators must still follow standard ESD protocols during handling, given the sensitivity of MOS input structures to electrostatic discharge, even though the component itself does not require special drying.
What role does the gain bandwidth product of 420 kHz play in determining usable closed-loop gain for the TSV621AILT?
The gain bandwidth product (GBW) defines the frequency at which the open-loop gain drops to unity, establishing a pole-zero relationship in closed-loop configurations. For the TSV621AILT, achieving stable operation requires that the product of desired closed-loop gain and signal bandwidth remain below approximately 420 kHz. For example, a non-inverting amplifier with a gain of 10 can only operate reliably up to about 42 kHz before phase margin degrades and potential instability arises. Thus, in audio-range signal processing or slow-moving sensor conditioning, higher gains are feasible, but precision in faster signals demands lower gains or additional compensation.
Are there any limitations in using the TSV621AILT as a comparator in open-loop mode?
The TSV621AILT is not optimized for comparator duty and lacks built-in hysteresis or fast overdrive recovery. Its relatively slow slew rate (0.14 V/µs) results in longer propagation delays (~7 µs for a 1 V step), which may cause timing inaccuracies in threshold detection applications. While usable in non-critical level sensing, it cannot replace dedicated comparators in high-speed window detectors or edge-triggered logic interfaces. For such uses, adding external Schmitt trigger circuitry or switching to a fast rail-to-rail comparator is advisable.
How does the TSV621AILT perform in terms of electromagnetic emissions compared to other SOT-23-5 op-amps?
As a general-purpose amplifier, the TSV621AILT emits typical levels of broadband noise associated with CMOS operational amplifiers. Its moderate bandwidth and low quiescent current help suppress high-frequency oscillation risks, indirectly reducing radiated emissions. However, in EMC-sensitive environments, additional filtering at the input and output—such as ferrite beads or RC snubbers—is often required. The compact package size actually aids emission control by minimizing loop area, assuming proper grounding and decoupling are implemented per best practices.
What considerations arise when cascading multiple stages using the TSV621AILT in multi-stage filters or instrumentation amplifiers?
Cascading the TSV621AILT introduces cumulative noise, offset voltage, and drift contributions that can degrade overall system accuracy. Each stage adds approximately 800 µV of worst-case offset, which compounds in high-precision differential configurations. To mitigate this, gain should be distributed evenly across stages with adequate headroom, and low-noise resistors should be used in feedback networks. Additionally, interstage buffering with unity-gain followers helps isolate stages and maintain bandwidth, preventing unintended loading effects that could compromise the intended transfer function.
Is the TSV621AILT suitable for use in medical wearable devices requiring long-term reliability and biocompatibility compliance?
While the TSV621AILT meets RoHS3 and REACH standards, indicating compliance with environmental directives, it is not specifically qualified for direct patient contact or implanted medical devices. Its materials and construction align with general industrial electronics, but additional biocompatibility certification (e.g., ISO 10993) would be required if used in skin-adjacent wearables. Functionally, however, its low power consumption, rail-to-rail swing, and stable performance make it appropriate for non-invasive health monitors such as pulse oximetry or ECG front-ends, provided enclosure and interface layers provide necessary isolation.

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics TSV621AILT

Product Attribute TSV621ILT TSV622AILT TSV620AILT TSV621AICT
Part Number TSV621ILT TSV622AILT TSV620AILT TSV621AICT
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Voltage - Supply Span (Min) - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Voltage - Supply Span (Max) - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Number of Circuits - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage - Input Offset - - - -
Current - Output / Channel - - - -
Current - Supply - - - -
Slew Rate - - - -
Amplifier Type - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Series - - - -
Gain Bandwidth Product - - - -
Current - Input Bias - - - -

TSV621AILT Datasheet PDF

Download TSV621AILT pdf datasheets and STMicroelectronics documentation for TSV621AILT - STMicroelectronics.

Datasheets
TSV620(A),621(A).pdf
PCN Assembly/Origin
New Lead-Frame 01/Sep/2020.pdf
PCN Packaging
Moisture Barrier Bag 09/May/2016.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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TSV621AILT Image

TSV621AILT

STMicroelectronics
32D-TSV621AILT

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