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

STMicroelectronics TSV611ICT

Name: TSV611ICT
Brand: STMicroelectronics
SKU: TSV611ICT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSV611ICT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 5-TSSOP, SC-70-5, SOT-353

Datasheet:: TSV611ICT.pdf

Description:: IC OPAMP GP 1 CIRCUIT SC70-5

Quantity:: RFQ Add To RFQ list

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Inventory:2,933

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Product details

Overview

TSV611ICT from STMicroelectronics is a rail-to-rail input/output CMOS operational amplifier optimized for ultra-low-power, low-voltage sensor signal conditioning. It delivers 120 kHz gain bandwidth, 10 µA supply current at 5 V, and operates from 1.5 V to 5.5 V supply - enabling use in smoke detector analog front-ends and battery-powered medical sensors.

For engineers reviewing the TSV611ICT datasheet, TSV611ICT pinout, TSV611ICT application, or TSV611ICT equivalent, key selection criteria include its 1 pA typical input bias current, 800 µV max input offset voltage (A-grade), rail-to-rail output swing within 35 mV of rails, and guaranteed unity-gain stability with capacitive loads up to 100 pF.

Technical Context

The TSV611ICT employs complementary PMOS/NMOS input stages to achieve rail-to-rail input common-mode range from (V_CC–) – 0.1 V to (V_CC+) + 0.1 V. Its input offset voltage drift is specified at 2 µV/°C, and phase margin remains stable at ≥60° across 1.5–5.5 V supply and –40 °C to 85 °C temperature range.

Output stage design enables sourcing up to 63 mA and sinking up to 57 mA at 5 V, while maintaining rail-to-rail swing into 10 kΩ load. The device is unity-gain stable without external compensation and features 80 dB minimum CMRR at 5 V, supporting precision DC-coupled amplification in high-impedance sensor interfaces.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	1.5 V to 5.5 V - supports single-cell Li-ion, alkaline, or coin-cell battery operation without regulation.
Supply Current	10.5 µA typ at 5 V - enables >10-year battery life in always-on smoke detectors drawing <1 µA average system current.
Gain Bandwidth	120 kHz typ - sufficient for DC–10 kHz sensor signal conditioning (e.g., thermistor, piezoresistive, or IR proximity sensing).
Input Bias Current	1 pA typ - preserves signal integrity when interfacing with high-impedance sources like pH electrodes or photodiodes.
Input Offset Voltage	800 µV max (A version) - ensures ≤0.016% error in 5 V full-scale medical instrumentation amplifiers.
Output Swing	Within 35 mV of rails into 10 kΩ - delivers full dynamic range in 1.8 V or 3.3 V ADC reference designs.
Phase Margin	≥62° at 5 V - guarantees stable unity-gain follower operation with 100 pF capacitive loads (e.g., long PCB traces or ESD protection caps).

Pinout & Package

TSV611ICT is packaged in SC70-5 (SOT323-5), a 1.8 × 2.0 mm surface-mount package with 0.65 mm lead pitch, optimized for space-constrained portable and wearable devices.

Pin/Terminal	Circuit Role	Design Meaning
1	In–	Inverting input terminal - accepts differential or single-ended signals; rail-to-rail common-mode range extends 0.1 V beyond supply rails.
2	In+	Non-inverting input terminal - ultra-low 1 pA bias current minimizes voltage error in high-Z sensor interfaces.
3	V_CC–	Negative supply pin - tied to GND in single-supply configurations; supports true 0 V input capability.
4	Out	Amplified output - delivers rail-to-rail swing (≤35 mV from rails) into 10 kΩ, enabling direct drive of SAR ADC inputs.
5	V_CC+	Positive supply pin - accepts 1.5–5.5 V; internal ESD protection rated to 4 kV HBM ensures robustness in field-deployed equipment.

Key Features

Feature	Design Value
Rail-to-rail input and output	Enables full utilization of 1.5–5.5 V supply range in single-supply systems - eliminates level-shifting circuitry in portable data loggers.
10 µA supply current at 5 V	Reduces quiescent power to 50 µW - critical for multi-year battery life in wireless IoT node sensor front-ends.
1 pA typical input bias current	Maintains accuracy with MΩ-range source impedances (e.g., electrochemical gas sensors), avoiding >1 mV error from bias-induced voltage drop.
Unity-gain stable with 100 pF load	Eliminates need for external isolation resistor in capacitive touch or long-trace applications - simplifies layout and reduces BOM count.
–40 °C to 85 °C operating range	Validated performance across industrial and automotive cabin environments - supports smoke detector deployment in uncontrolled ambient conditions.

Applications

Smoke Detector Front-End

Portable ECG Signal Conditioning

Use Scenario: Amplifying weak ionization chamber current (pA–nA) in battery-powered residential smoke alarms.

IC Role / Device Role / Timing Role: Low-noise, low-drift transimpedance amplifier with rail-to-rail output driving comparator input.

Use Value: 1 pA input bias prevents signal loss; 10 µA supply current extends 10-year battery life; rail-to-rail swing maximizes comparator sensitivity.

Use Scenario: Buffering and filtering microvolt-level biopotential signals from dry-electrode ECG patches in handheld monitors.

IC Role / Device Role / Timing Role: High-input-impedance buffer and 2nd-order active low-pass filter (fc = 40 Hz) before 12-bit ADC sampling.

Use Value: 800 µV max V_os avoids baseline drift; 120 kHz GBW supports clean 40 Hz cutoff; SC70-5 footprint saves PCB area in compact wearables.

Proximity Sensor Interface

Thermistor Linearization Circuit

Use Scenario: Converting capacitance shifts from capacitive proximity sensors (e.g., smartphone edge detection) into stable voltage outputs.

IC Role / Device Role / Timing Role: Charge amplifier and integrator in relaxation oscillator configuration, operating from 1.8 V coin cell.

Use Value: Rail-to-rail input accepts full 0–1.8 V sensor voltage swing; 10 µA I_CC enables >5-year operation; 2 µV/°C drift minimizes temperature-induced false triggers.

Use Scenario: Linearizing NTC thermistor response in battery-powered temperature loggers for cold-chain monitoring.

IC Role / Device Role / Timing Role: Constant-current source driver and precision difference amplifier in Wheatstone bridge configuration.

Use Value: 1 pA I_ib prevents self-heating error in high-resistance thermistors; 5.5 V max supply allows direct connection to boost-regulated 5 V rails.

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
TLV851DBVR	Higher 25 µA supply current; 1 MHz GBW; 3.5 mV max V_os; SOT23-5 only	Better for higher-speed active filters but consumes 2.5× more power - unsuitable for >5-year battery life targets	Select if bandwidth >200 kHz is required and power budget allows ≥20 µA per channel
MAX4477ASA+	Lower 500 µV max V_os; 1.5 µA supply current; 10 MHz GBW; SO8 only	Superior DC precision and speed, but larger SO8 package and higher cost - over-specified for simple sensor buffering	Select only when sub-millivolt offset and >1 MHz bandwidth are mandatory, and board space permits SO8

Compared with TLV851DBVR and MAX4477ASA+, the TSV611ICT uniquely balances ultra-low 10 µA supply current, 800 µV max offset, SC70-5 footprint, and guaranteed 120 kHz GBW - making it optimal for cost- and size-constrained, multi-year battery applications where moderate bandwidth suffices.

Availability

TSV611ICT is available at Aetrix Electronics and suitable for smoke detector manufacturing, portable medical instrumentation, battery-powered proximity sensing, and thermistor-based environmental monitoring requiring stable component supply across extended product lifecycles.

Supply support for TSV611ICT 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 microcontrollers, analog ICs, MEMS, and power solutions for industrial, automotive, and consumer markets.

The TSV61x family belongs to ST's precision low-power analog portfolio, engineered specifically for energy-constrained sensor interface applications demanding rail-to-rail operation, nanoampere input bias, and guaranteed stability in compact portable systems.

FAQ

What is the maximum capacitive load the TSV611ICT can drive without external compensation?

The TSV611ICT is unity-gain stable and characterized to drive up to 100 pF capacitive loads directly at the output without oscillation, as verified in Figure 7–10 of the datasheet. For loads exceeding 100 pF, a series isolation resistor (values shown in Figure 19) must be added to maintain phase margin ≥60°.

Does the TSV611ICT support true single-supply operation down to 1.5 V?

Yes - the TSV611ICT operates from 1.5 V to 5.5 V with full rail-to-rail input and output functionality. At 1.5 V, it maintains 100 kHz GBP, 1 pA input bias current, and common-mode input range from –0.1 V to +1.6 V, enabling direct interfacing with 0 V-referenced sensors in ultra-low-voltage systems.

How does the input offset voltage change across temperature for the TSV611ICT?

The TSV611ICT exhibits a maximum input offset voltage drift of 2 µV/°C, as specified in Tables 3–5. Over the full –40 °C to +85 °C range, this results in ≤250 µV total drift (125 °C × 2 µV/°C), ensuring stable DC accuracy in unregulated industrial environments without active calibration.

Is the SC70-5 package of the TSV611ICT RoHS-compliant and halogen-free?

Yes - the TSV611ICT in SC70-5 packaging carries STMicroelectronics' ECOPACK®2 certification, confirming full compliance with RoHS Directive 2011/65/EU and halogen-free status per IEC 61249-2-21. Package markings and material declarations are available on ST's official product page.

TSV611ICT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 5-TSSOP, SC-70-5, SOT-353

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 1

Output Type:: Rail-to-Rail

Slew Rate:: 0.04V/µs

Gain Bandwidth Product:: 120 kHz

-3db Bandwidth:: -

Current - Input Bias:: 1 pA

Voltage - Input Offset:: 4 mV

Current - Supply:: 10.5µA

Current - Output / Channel:: 63 mA

Voltage - Supply Span (Min):: 1.5 V

Voltage - Supply Span (Max):: 5.5 V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-70-5

TSV611ICT FAQ

1.How can I place an order for TSV611ICT through Aetrix?

Please submit a Request for Quotation (RFQ) for TSV611ICT 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 TSV611ICT reliable?

The price and inventory of TSV611ICT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV611ICT is usually 5 days.

3.What payment methods are accepted for TSV611ICT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV611ICT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSV611ICT?

TSV611ICT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSV611ICT 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 TSV611ICT?

For technical support, including TSV611ICT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV611ICT requirements.

6.How does Aetrix verify that TSV611ICT is sourced from the original manufacturer or authorized distributors?

All TSV611ICT 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 TSV611ICT meets industry standards.

7.What is the process for return or replacement of TSV611ICT?

All TSV611ICT units undergo pre-shipment inspection (PSI). If there is an issue with TSV611ICT, 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 TSV611ICT part is unused and in its original packaging.

Return procedure for TSV611ICT:

1.Submit a request within 90 days.

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

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