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

STMicroelectronics TSV851AILT

Name: TSV851AILT
Brand: STMicroelectronics
SKU: TSV851AILT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSV851AILT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: SC-74A, SOT-753

Datasheet:: TSV851AILT.pdf

Description:: IC OPAMP GP 1 CIRCUIT SOT23-5

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TSV851AILT from STMicroelectronics is a single-channel, rail-to-rail output, low-power operational amplifier with shutdown functionality, designed for precision signal conditioning in space-constrained, battery-powered systems. It delivers 1.3 MHz gain bandwidth, 0.8 mV max input offset voltage at 25 °C, 180 µA max supply current per channel at 5 V, and operates across -40 °C to +125 °C - enabling use in automotive sensor front-ends and portable medical monitors.

For engineers reviewing the TSV851AILT datasheet, TSV851AILT pinout, TSV851AILT application, or TSV851AILT equivalent, key selection criteria include its 50 nA shutdown current, SC70-5 package footprint, rail-to-rail output swing (≤180 mV from rails), extended temperature guarantee, and compatibility with 2.3 V–5.5 V single-supply operation.

Technical Context

The TSV851AILT implements a CMOS input stage with rail-to-rail output stage, supporting input common-mode range from V_CC− − 0.2 V to V_CC+ − 1 V and output swing within 180 mV of both supply rails under 10 kΩ load. Its internal architecture enables stable unity-gain operation with 60° phase margin and 10 dB gain margin up to 200 pF capacitive load.

It integrates a dedicated SHDN pin that places the amplifier in high-impedance output state and reduces supply current to ≤50 nA at 25 °C. Turn-on/turn-off times are specified at 300 ns and 20 ns respectively, making it suitable for power-gated signal paths in duty-cycled systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.3 V to 5.5 V - supports direct Li-ion battery (3.0–4.2 V) and 3.3 V/5 V system rails without level shifting.
Gain Bandwidth Product	1.3 MHz - enables stable closed-loop gain ≥10 up to ~130 kHz with adequate phase margin.
Input Offset Voltage	0.8 mV max at 25 °C - allows DC-coupled amplification of mV-level sensor signals (e.g., thermocouples, strain gauges) without trimming.
Supply Current per Channel	180 µA max at 5 V - extends battery life in always-on monitoring nodes (e.g., >10-year runtime on CR2032 at 1 kHz sampling).
Shutdown Current	50 nA max at 25 °C - reduces quiescent power by >3,500× versus active mode, critical for intermittent sensing.
Rail-to-Rail Output Swing	≤180 mV from V_CC+ and V_CC− at 10 kΩ - maximizes dynamic range in low-voltage ADC interfaces (e.g., 12-bit SAR with 3.3 V reference).
Operating Temperature	-40 °C to +125 °C - qualified for under-hood automotive and industrial control environments without derating.

Pinout & Package

TSV851AILT is housed in a 5-pin SC70-5 (SOT323-5) package - 2.0 mm × 1.25 mm × 0.9 mm body with 0.65 mm pitch - optimized for ultra-compact PCB layouts in wearables and distributed sensors.

Pin/Terminal	Circuit Role	Design Meaning
1 (IN+)	Non-inverting input	High-impedance CMOS node; accepts signals down to V_CC− − 0.2 V, enabling ground-referenced sensor interfacing.
2 (IN−)	Inverting input	Differential pair input; matched with IN+ for <2 µV/°C offset drift over full temperature range.
3 (OUT)	Amplifier output	Rail-to-rail CMOS output stage; drives 10 kΩ load to within 180 mV of either rail; high-Z in shutdown.
4 (V_CC−)	Negative supply	Ground reference for single-supply operation; must be connected directly to PCB ground plane.
5 (SHDN)	Shutdown control	Active-low logic input; pulled high (>V_CC− + 0.5 V) to enable, pulled low (<0.5 V) to enter 50 nA shutdown mode.

Key Features

Feature	Design Value
Low-power shutdown mode	Reduces supply current to ≤50 nA, enabling microampere-level system sleep states without external power switches.
Rail-to-rail output stage	Delivers full-scale swing into 10 kΩ loads, preserving SNR when driving 12-bit+ SAR ADCs directly from 3.3 V rails.
Enhanced input offset voltage	0.8 mV max at 25 °C and 2 mV max over -40 °C to +125 °C - eliminates need for factory calibration in cost-sensitive automotive modules.
Extended temperature qualification	Guaranteed operation from -40 °C to +125 °C with no parameter derating - simplifies thermal design for engine control units and battery management systems.
High ESD tolerance	4 kV HBM (non-SHDN pins), 3.5 kV HBM (SHDN pin), and 1.3 kV CDM - withstands handling and board assembly without additional protection circuitry.

Applications

Automotive Cabin Sensors

Portable Medical Monitors

Use Scenario: Signal conditioning for analog outputs of cabin temperature, humidity, and CO₂ sensors in HVAC control modules.

IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op-amp amplifying low-level sensor outputs (0–100 mV) to match 3.3 V ADC input range while rejecting supply ripple.

Use Value: 1.3 MHz GBP and 0.8 mV offset ensure accurate DC gain stability across temperature; shutdown mode cuts power during vehicle sleep cycles.

Use Scenario: Amplifying ECG electrode signals in handheld cardiac monitors powered by coin-cell batteries.

IC Role / Device Role / Timing Role: Low-noise, low-I_Q amplifier in first-stage instrumentation path, operating from 3.0 V nominal supply with intermittent activation.

Use Value: 180 µA active current and 50 nA shutdown current extend battery life beyond 2 years; rail-to-rail output maximizes ADC utilization.

Industrial Battery-Powered IoT Nodes

Automotive Powertrain Signal Conditioning

Use Scenario: Front-end amplification for pressure and current sensors in wireless predictive maintenance sensors mounted on motors and pumps.

IC Role / Device Role / Timing Role: Precision gain block converting transducer outputs to ADC-compatible levels, enabled only during scheduled measurement windows.

Use Value: Shutdown pin allows microcontroller to gate power autonomously; -40 °C to +125 °C rating ensures reliability in uncontrolled enclosures.

Use Scenario: Amplifying crankshaft position sensor signals in engine control units exposed to under-hood thermal stress.

IC Role / Device Role / Timing Role: High-accuracy, high-temperature op-amp buffering and level-shifting analog signals before digitization by MCU ADC.

Use Value: 2 mV max offset over full temperature range avoids software correction; 125 °C rating eliminates need for local cooling.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TSV851IPT	Same die, but in SO8 package (4.9 × 6.0 mm) - 4× larger footprint, higher thermal resistance (125 °C/W vs. 205 °C/W).	Preferred where manual soldering, test probing, or higher power dissipation margin is required.	Select when board space permits and thermal performance under sustained load is prioritized over size.
LMV321IDBVR	Higher 150 µA typical I_Q, 2.5 mV max V_IO at 25 °C, no shutdown function, same SC70-5 package.	Suitable for always-on, non-battery-critical applications where shutdown is unnecessary.	Choose when lowest BOM cost is primary driver and 50 nA shutdown is not required.

Compared with TSV851IPT, the TSV851AILT saves >75% board area and improves thermal response; compared with LMV321IDBVR, it adds shutdown capability and halves offset voltage - critical for precision, energy-constrained designs.

Availability

TSV851AILT is available at Aetrix Electronics and suitable for automotive cabin sensors, portable medical monitors, and industrial battery-powered IoT nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TSV851AILT 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, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.

The TSV85x series belongs to ST's precision analog portfolio, engineered specifically for low-voltage, low-power signal conditioning in harsh-environment applications - emphasizing rail-to-rail performance, automotive qualification, and miniature packaging.

FAQ

What is the maximum capacitive load the TSV851AILT can drive while maintaining stability?

The TSV851AILT maintains ≥60° phase margin with up to 200 pF capacitive load when configured as a unity-gain buffer with 50 kΩ feedback resistor, as verified in Figure 9 of the datasheet. For loads >200 pF, a series resistor (≥100 Ω) between output and capacitance is recommended to preserve stability.

Can the SHDN pin be left floating during PCB layout?

No - the SHDN pin must never be left floating. It must be actively pulled high (to V_CC+) to enable normal operation or pulled low (to V_CC−) to enter shutdown. Floating causes undefined output state and potential increased current draw; a 100 kΩ pull-up resistor is recommended for default-enable configurations.

Does the TSV851AILT support dual-supply operation?

Yes - though optimized for single-supply use, the TSV851AILT supports split supplies (e.g., ±2.5 V) as long as total supply voltage remains within 2.3 V to 5.5 V and input/output voltages stay within absolute maximum ratings. The input common-mode range extends to V_CC− − 0.2 V, allowing ground-referenced inputs in dual-rail setups.

How does the input offset voltage drift behave over temperature?

The TSV851AILT exhibits ≤1 µV/°C maximum input offset voltage drift across -40 °C to +125 °C, as specified in Table 4 and Section 4.4. This results in ≤170 µV total drift over the full range - significantly lower than standard precision op-amps - ensuring minimal gain error in DC-coupled sensor chains without recalibration.

TSV851AILT 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:: 0.7V/µs

Gain Bandwidth Product:: 1.3 MHz

-3db Bandwidth:: -

Current - Input Bias:: 27 nA

Voltage - Input Offset:: 800 µV

Current - Supply:: 130µA

Current - Output / Channel:: 70 mA

Voltage - Supply Span (Min):: 2.5 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

TSV851AILT FAQ

1.How can I place an order for TSV851AILT through Aetrix?

Please submit a Request for Quotation (RFQ) for TSV851AILT 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 TSV851AILT reliable?

The price and inventory of TSV851AILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV851AILT is usually 5 days.

3.What payment methods are accepted for TSV851AILT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV851AILT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSV851AILT?

TSV851AILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSV851AILT 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 TSV851AILT?

For technical support, including TSV851AILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV851AILT requirements.

6.How does Aetrix verify that TSV851AILT is sourced from the original manufacturer or authorized distributors?

All TSV851AILT 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 TSV851AILT meets industry standards.

7.What is the process for return or replacement of TSV851AILT?

All TSV851AILT units undergo pre-shipment inspection (PSI). If there is an issue with TSV851AILT, 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 TSV851AILT part is unused and in its original packaging.

Return procedure for TSV851AILT:

1.Submit a request within 90 days.

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

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