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

STMicroelectronics TSV631AICT

Name: TSV631AICT
Brand: STMicroelectronics
SKU: TSV631AICT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSV631AICT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: TSV631AICT.pdf

Description:: IC OPAMP GP 1 CIRCUIT SC70-5

Quantity:: RFQ Add To RFQ list

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Inventory:3,594

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Product details

Overview

TSV631AICT from STMicroelectronics is a rail-to-rail input/output CMOS operational amplifier optimized for ultra-low-power, precision signal conditioning in 1.5 V–5.5 V systems. It delivers 880 kHz gain bandwidth at 60 µA quiescent current, 500 µV max offset voltage (A-grade), 1 pA typical input bias current, and 63 mA output drive at 5 V - enabling high-accuracy sensor front-ends and battery-powered medical instrumentation.

For engineers reviewing the TSV631AICT datasheet, TSV631AICT pinout, TSV631AICT application, or TSV631AICT equivalent, this device is selected for low-voltage precision amplification where rail-to-rail swing, sub-1 µA shutdown current, and extended -40 °C to 125 °C operation are critical design requirements.

Technical Context

The TSV631AICT employs complementary PMOS/NMOS input pairs to achieve true rail-to-rail input operation with common-mode range from (V_CC–) – 0.1 V to (V_CC+) + 0.1 V and guaranteed absence of phase reversal. Its unity-gain-stable architecture supports capacitive loads up to 100 pF without oscillation.

Internally trimmed for narrow parameter dispersion, it guarantees minimum GBP = 730 kHz and slew rate = 0.25 V/µs across temperature, while maintaining 75–102 dB supply voltage rejection ratio and 60–80 dB common-mode rejection ratio over full 0–5 V input range.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.5 V to 5.5 V - enables direct operation from single-cell Li-ion, alkaline, or regulated 3.3 V/5 V rails without level shifting.
Quiescent Current	60 µA typ at 5 V - extends battery life in portable ECG monitors and wireless sensor nodes beyond 1 year on coin cells.
Input Offset Voltage	500 µV max (A-grade) - ensures ≤0.01% gain error in 12-bit sensor signal chains without trimming.
Gain Bandwidth Product	880 kHz typ - supports stable closed-loop gain ≥10 at 80 kHz for anti-aliasing filter stages.
Output Drive Capability	63 mA sink/source at 5 V - directly drives 80 Ω loads (e.g., 50 Ω + 30 Ω series termination) without external buffers.
Shutdown Current	5 nA typ - reduces system standby power to nanoampere levels in intermittent-sampling architectures.
Input Bias Current	1 pA typ - preserves signal integrity in high-impedance pH or photodiode transimpedance amplifiers.

Pinout & Package

TSV631AICT is supplied in SC70-6 (SOT323-6) package: 1.3 mm × 0.8 mm × 0.55 mm body, 0.65 mm pitch, 6-pin surface-mount outline with exposed pad not present.

Pin/Terminal	Circuit Role	Design Meaning
1 (IN+)	Non-inverting input	Accepts signals from 0.1 V below V_CC– to 0.1 V above V_CC+; no phase reversal across rail span.
2 (IN−)	Inverting input	Differential pair node with 1 pA bias current; matched to Pin 1 for <500 µV offset in A-grade units.
3 (V_CC–)	Negative supply	Ground reference for single-supply operation; must be decoupled with 10 nF capacitor within 2 mm.
4 (OUT)	Amplifier output	Rail-to-rail swing: within 35 mV of V_CC–/V_CC+ into 10 kΩ load; capable of 63 mA continuous drive.
5 (V_CC+)	Positive supply	Supports 1.5–5.5 V; internal bandgap reference stability ensures consistent GBP and SR across voltage range.
6 (NC)	No connect	Internally unconnected; left floating per datasheet - no routing or soldering required.

Key Features

Feature	Design Value
Rail-to-rail input and output	Enables full dynamic range utilization in 1.8 V ADC interfaces and low-headroom battery monitoring circuits.
500 µV max offset (A-grade)	Reduces calibration overhead in factory-trimmed industrial transmitters and portable blood glucose meters.
60 µA quiescent current	Permits continuous 24/7 operation in wearable heart-rate monitors powered by CR2032 batteries for >18 months.
Unity-gain stable to 100 pF	Eliminates need for external compensation in active filters and sensor buffer stages with PCB trace capacitance.
-40 °C to 125 °C operation	Qualifies for under-hood automotive cabin air quality sensors and industrial motor control feedback loops.

Applications

Medical Sensor Front-End

Portable Gas Detector

Use Scenario: Amplifying microvolt-level signals from electrochemical gas sensors in handheld CO detectors.

IC Role / Device Role / Timing Role: Precision transimpedance amplifier with rail-to-rail output driving 12-bit SAR ADC reference buffer.

Use Value: 1 pA input bias prevents sensor polarization drift; 500 µV offset ensures ±1 ppm CO detection accuracy without software correction.

Use Scenario: Signal conditioning for NDIR infrared detector in battery-operated indoor air quality monitors.

IC Role / Device Role / Timing Role: Low-noise DC-coupled amplifier stage preceding synchronous demodulation circuitry.

Use Value: 60 µA supply current enables 3-year operation on two AA cells; rail-to-rail swing maximizes SNR into 3.3 V ADC.

Automotive Cabin Pressure Sensor

Industrial Thermocouple Interface

Use Scenario: Amplifying bridge output from MEMS barometric pressure sensors in automotive HVAC control modules.

IC Role / Device Role / Timing Role: Instrumentation-grade gain stage with integrated ESD protection for harsh vehicle environments.

Use Value: -40 °C to 125 °C rating ensures reliability across engine bay thermal cycles; 80 dB CMRR rejects ignition noise.

Use Scenario: Cold-junction compensation and linearization amplifier for K-type thermocouples in PLC analog input modules.

IC Role / Device Role / Timing Role: Precision voltage follower buffering thermopile output before cold-junction IC and ADC.

Use Value: 2 µV/°C offset drift minimizes temperature-induced gain error; 1.5 V minimum supply supports wide-input-range isolated power rails.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TSV621ICT	420 kHz GBP, 29 µA I_Q, same SC70-6 package	Lower bandwidth suits DC/low-frequency thermistor readouts but insufficient for 10 kHz ECG filtering.	Select when power budget <30 µA dominates over bandwidth needs; verify GBP margin for closed-loop stability.
MCP6001T-E/OT	1 MHz GBP, 100 µA I_Q, 2.7–6 V supply, SOT23-5	Higher supply minimum excludes 1.5 V coin-cell use; no shutdown pin limits ultra-low-power sleep modes.	Choose for higher-speed sensor interfaces where 100 µA is acceptable and 2.7 V minimum supply aligns with system rails.

Compared with TSV631AICT, TSV621ICT trades 53% bandwidth for 52% lower quiescent current, while MCP6001T-E/OT offers 14% more bandwidth at 67% higher supply current and lacks rail-to-rail input - making TSV631AICT optimal for 1.5–5.5 V precision applications demanding both low power and 880 kHz response.

Availability

TSV631AICT is available at Aetrix Electronics and suitable for battery-powered medical devices, portable environmental sensors, and automotive cabin pressure monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TSV631AICT 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, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

The TSV63x 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 automotive-grade systems.

FAQ

What is the maximum capacitive load the TSV631AICT can drive without external compensation?

The TSV631AICT is unity-gain stable for capacitive loads up to 100 pF when configured as a voltage follower. Driving larger loads requires an in-series resistor (e.g., 10–100 Ω) at the output, with values determined empirically using Figure 23 from the datasheet and verified via bench testing and SPICE simulation with ST's macromodel.

Does the TSV631AICT have a shutdown pin, and how is it controlled?

No - the TSV631AICT does not include a shutdown function. Only the TSV630 and TSV630A variants feature a dedicated SHDN pin. The TSV631AICT is a non-shutdown version; power gating must be implemented externally via supply switching or enable circuitry if ultra-low standby current is required.

Can the TSV631AICT operate from a 1.5 V supply, and what performance is guaranteed?

Yes - the TSV631AICT is fully specified down to 1.5 V supply voltage. At 1.5 V, it maintains rail-to-rail input/output swing, 700 kHz minimum gain bandwidth, 0.2 V/µs minimum slew rate, and 53 dB minimum CMRR. All DC parameters (offset, bias current, PSRR) remain functional though with reduced margins versus 5 V operation.

Is the NC pin (Pin 6) in the SC70-6 package required to be grounded or left floating?

Pin 6 is a true no-connect terminal with no internal connection. ST's datasheet explicitly states it must be left floating - neither grounded nor tied to any voltage. Routing traces or applying solder to this pin may cause mechanical stress or unintended coupling and is strictly prohibited in production layouts.

TSV631AICT 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:: 0.34V/µs

Gain Bandwidth Product:: 880 kHz

-3db Bandwidth:: -

Current - Input Bias:: 1 pA

Voltage - Input Offset:: 500 µV

Current - Supply:: 60µA

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:: SC-70-5

TSV631AICT FAQ

1.How can I place an order for TSV631AICT through Aetrix?

Please submit a Request for Quotation (RFQ) for TSV631AICT 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 TSV631AICT reliable?

The price and inventory of TSV631AICT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV631AICT is usually 5 days.

3.What payment methods are accepted for TSV631AICT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV631AICT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSV631AICT?

TSV631AICT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSV631AICT 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 TSV631AICT?

For technical support, including TSV631AICT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV631AICT requirements.

6.How does Aetrix verify that TSV631AICT is sourced from the original manufacturer or authorized distributors?

All TSV631AICT 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 TSV631AICT meets industry standards.

7.What is the process for return or replacement of TSV631AICT?

All TSV631AICT units undergo pre-shipment inspection (PSI). If there is an issue with TSV631AICT, 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 TSV631AICT part is unused and in its original packaging.

Return procedure for TSV631AICT:

1.Submit a request within 90 days.

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

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