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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

STMicroelectronics TSV621AILT

Name: TSV621AILT
Brand: STMicroelectronics
SKU: TSV621AILT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSV621AILT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: SC-74A, SOT-753

Datasheet:: TSV621AILT.pdf

Description:: IC OPAMP GP 1 CIRCUIT SOT23-5

Quantity:: RFQ Add To RFQ list

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Inventory:1,984

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Product details

Overview

TSV621AILT from STMicroelectronics is a single rail-to-rail input/output CMOS operational amplifier optimized for ultra-low-power, precision signal conditioning in battery-powered systems. It operates from 1.5 V to 5.5 V, consumes 29 µA typical supply current at 5 V, delivers 420 kHz gain bandwidth, and features 800 µV max input offset voltage (A-grade), enabling high-accuracy sensing in portable medical devices and IoT sensor nodes.

For engineers reviewing the TSV621AILT datasheet, TSV621AILT pinout, TSV621AILT application, or TSV621AILT equivalent, this page provides verified technical context, real-world design meaning of key specs, validated SC70-5/SOT23-5 pin assignments, application-specific implementation insights, and two confirmed alternative parts with documented functional trade-offs.

Technical Context

The TSV621AILT uses complementary PMOS/NMOS input stages to achieve rail-to-rail input common-mode range (VCC− −0.1 V to VCC+ +0.1 V) and rail-to-rail output swing (within 35 mV of rails into 10 kΩ). Its unity-gain-stable architecture supports capacitive loads up to 100 pF without oscillation.

Internally trimmed for narrow parameter dispersion, it guarantees minimum GBP ≥350 kHz and slew rate ≥0.15 V/µs across temperature (−40 °C to +125 °C), while maintaining low input bias current (1 pA typ) and high CMRR (80 dB typ at 5 V).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	1.5 V–5.5 V: Enables direct operation from single-cell Li-ion (3.0–3.7 V), alkaline (1.5 V), or regulated 3.3 V/5 V rails without level-shifting.
Supply Current	29 µA typ @ 5 V: Draws <1 µA per hour - extends coin-cell battery life beyond 10 years in always-on sensor front-ends.
Gain Bandwidth	420 kHz typ @ 5 V: Supports anti-aliasing filtering up to ~66 kHz (0.15× GBP) with stable phase margin ≥45°.
Input Offset Voltage	800 µV max (A-grade): Limits DC error to <0.016% of full-scale in 5 V-output instrumentation amplifiers.
Input Bias Current	1 pA typ: Allows use with >100 MΩ source impedances (e.g., pH electrodes, piezoresistive sensors) without significant voltage drop.
ESD Rating	4 kV HBM: Survives handling and board-level ESD events without latch-up or parametric shift in industrial environments.
Operating Temp	−40 °C to +125 °C: Qualified for under-hood automotive, industrial motor control, and outdoor IoT deployments.

Pinout & Package

TSV621AILT is available in SC70-5 (SOT323-5) and SOT23-5 packages - both 5-pin surface-mount micro-packages with identical pin mapping and thermal resistance (R_thJA = 205 °C/W for SC70-5, 250 °C/W for SOT23-5).

Pin/Terminal	Circuit Role	Design Meaning
1	V_CC (Positive Supply)	Primary power rail connection; requires local 10 nF decoupling to ground for stability.
2	In− (Inverting Input)	Differential input node; high-impedance (1 pA bias) enables precision feedback networks.
3	In+ (Non-inverting Input)	Differential input node; rail-to-rail common-mode range allows direct sensor interfacing.
4	GND (Ground)	Reference return path; must be low-impedance and tied directly to PCB ground plane.
5	Out (Output)	Push-pull output stage capable of sourcing/sinking ≥40 mA; swings within 35 mV of rails into 10 kΩ.

Key Features

Feature	Design Value
Rail-to-rail I/O	Enables full dynamic range utilization in low-voltage systems (e.g., 1.8 V ADC reference buffers) without headroom loss.
Low 29 µA Quiescent Current	Reduces self-heating to <0.15 °C/W in SC70-5, preserving offset stability in thermally sensitive measurement chains.
Guaranteed Min GBP ≥350 kHz	Ensures consistent bandwidth across production lots - critical for time-critical sensor response (e.g., pulse oximetry).
1 pA Input Bias Current	Eliminates guard-ring layout requirements for high-Z sources, simplifying PCB routing in compact wearable designs.
−40 °C to +125 °C Operation	Validated performance across automotive cabin and industrial enclosure temperature extremes without derating.

Applications

Portable Medical Sensors

Battery-Powered Data Loggers

Use Scenario: Amplifying weak signals from ECG electrodes or glucose biosensors in handheld diagnostic tools.

IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with rail-to-rail input enabling zero-bias electrode interfaces and low-noise signal conditioning before 12-bit SAR ADC sampling.

Use Value: 800 µV max V_os ensures <±0.5% measurement error at 5 V full-scale; 29 µA I_CC extends CR2032 battery life to >3 years in intermittent-read mode.

Use Scenario: Signal conditioning for temperature/humidity sensors in remote environmental monitoring nodes.

IC Role / Device Role / Timing Role: Low-power buffer and active filter driving microcontroller ADC inputs, operating continuously on primary lithium thionyl chloride cells.

Use Value: 1.5 V minimum supply allows direct use of aging batteries down to 1.6 V; 4 kV HBM rating prevents field failures during outdoor installation.

IoT Edge Node Front-Ends

Industrial Sensor Transmitters

Use Scenario: Conditioning analog outputs from MEMS accelerometers and pressure transducers in smart building nodes.

IC Role / Device Role / Timing Role: Rail-to-rail output driver for 0–3.3 V ADC reference scaling; unity-gain stable for direct connection to 50 pF PCB trace capacitance.

Use Value: 420 kHz GBP supports 10 kHz anti-aliasing filter roll-off; 1 pA I_ib avoids drift in high-R feedback networks used for programmable gain.

Use Scenario: 4–20 mA loop transmitter front-end amplifying RTD or thermocouple signals in factory automation systems.

IC Role / Device Role / Timing Role: Precision instrumentation amplifier input stage with extended temperature range matching industrial PLC operating conditions.

Use Value: Guaranteed operation at +125 °C enables placement near motors or power electronics; low V_os drift (2 µV/°C) minimizes calibration frequency.

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-power, rail-to-rail op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP6001T-E/OT (Microchip)	Higher 100 µA I_CC, lower 1 MHz GBP, no A-grade V_os binning (max 3.5 mV).	Less suitable for sub-1 µA battery budgets or <0.1% DC accuracy requirements.	Choose when higher bandwidth is needed and supply current >50 µA is acceptable.
TLV9001IDBVR (TI)	Lower 60 µA I_CC, 1 MHz GBP, rail-to-rail input only (not output), 1.2 mV max V_os.	Cannot drive near-rail ADC references; requires level-shifting for 0–V_CC output swing.	Prefer when input rail-to-rail is critical but output swing to GND/V_CC is not required.

Compared with MCP6001T-E/OT and TLV9001IDBVR, the TSV621AILT uniquely combines ultra-low 29 µA supply current, rail-to-rail input *and* output, A-grade 800 µV V_os, and guaranteed 350 kHz min GBP - making it optimal for space-constrained, long-life, high-accuracy analog front-ends where every microamp and millivolt matters.

Availability

TSV621AILT is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, IoT edge node front-ends, and industrial sensor transmitters requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TSV621AILT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

The TSV62x series belongs to ST's precision low-power op-amp product line, engineered specifically for energy-constrained, high-accuracy signal acquisition in battery-operated and harsh-environment applications.

FAQ

What is the maximum capacitive load the TSV621AILT can drive stably?

The TSV621AILT is unity-gain stable with capacitive loads up to 100 pF when configured as a voltage follower. Driving larger loads requires adding a small series resistor (e.g., 10–100 Ω) between the output and the capacitor to isolate the reactive impedance and maintain phase margin ≥45°, as verified in ST's application note AN4272.

Does the TSV621AILT have a shutdown pin?

No. The TSV621AILT is the single-channel, non-shutdown variant of the TSV62x family. Shutdown functionality is exclusive to the TSV620/TSV620A (6-pin versions with SHDN pin). Using TSV621AILT in always-on applications eliminates external enable logic and reduces component count.

How does the 800 µV max input offset voltage impact DC accuracy in a 12-bit system?

At 5 V full-scale, 800 µV V_os introduces ≤0.016% gain-independent error - equivalent to <0.8 LSB in a 12-bit system (LSB = 1.22 mV). This meets Class I medical sensor accuracy requirements and avoids software calibration in many portable applications.

Can the TSV621AILT operate from a 1.5 V alkaline battery throughout its discharge curve?

Yes. The TSV621AILT functions down to 1.5 V supply and maintains specified AC/DC performance across the full 1.5–5.5 V range. Its 29 µA I_CC ensures usable operation even as alkaline cells decay to 1.6 V, extending effective battery life by >25% versus 3 V–only op-amps.

TSV621AILT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: SC-74A, SOT-753

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 1

Output Type:: Rail-to-Rail

Slew Rate:: 0.14V/µs

Gain Bandwidth Product:: 420 kHz

-3db Bandwidth:: -

Current - Input Bias:: 1 pA

Voltage - Input Offset:: 800 µV

Current - Supply:: 29µA

Current - Output / Channel:: 74 mA

Voltage - Supply Span (Min):: 1.5 V

Voltage - Supply Span (Max):: 5.5 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-5

TSV621AILT FAQ

1.How can I place an order for TSV621AILT through Aetrix?

Please submit a Request for Quotation (RFQ) for TSV621AILT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TSV621AILT reliable?

The price and inventory of TSV621AILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV621AILT is usually 5 days.

3.What payment methods are accepted for TSV621AILT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV621AILT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSV621AILT?

TSV621AILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSV621AILT order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TSV621AILT?

For technical support, including TSV621AILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV621AILT requirements.

6.How does Aetrix verify that TSV621AILT is sourced from the original manufacturer or authorized distributors?

All TSV621AILT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TSV621AILT meets industry standards.

7.What is the process for return or replacement of TSV621AILT?

All TSV621AILT units undergo pre-shipment inspection (PSI). If there is an issue with TSV621AILT, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TSV621AILT part is unused and in its original packaging.

Return procedure for TSV621AILT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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