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

STMicroelectronics TSB7191ILT

Name: TSB7191ILT
Brand: STMicroelectronics
SKU: TSB7191ILT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSB7191ILT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: SC-74A, SOT-753

Datasheet:: TSB7191ILT.pdf

Description:: IC OPAMP GP 1 CIRCUIT SOT23-5

Quantity:: RFQ Add To RFQ list

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Inventory:11,141

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Product details

Overview

TSB7191ILT from STMicroelectronics is a precision rail-to-rail input/output operational amplifier in SOT23-5 package, designed for high-accuracy signal conditioning in wide-supply industrial and automotive systems. It delivers 22 MHz gain bandwidth, 12 V/µs slew rate, 300 µV max input offset voltage at 25 °C, and operates from 2.7 V to 36 V single supply - enabling high-side current sensing and Hall effect sensor interfacing with minimal error across temperature.

For engineers reviewing the TSB7191ILT datasheet, TSB7191ILT pinout, TSB7191ILT application, or TSB7191ILT equivalent, this page provides verified pin functions, real-world design meaning of key specs (e.g., ±300 µV offset, 12 nV/√Hz noise, stability at gain ≥+10), and confirmed alternatives for current-sensing and instrumentation circuits requiring extended temperature operation (-40 °C to +125 °C).

Technical Context

The TSB7191ILT uses a complementary bipolar input stage enabling true rail-to-rail input common-mode range from VCC− to (VCC+)+0.1 V, with optimized performance over VCC− to (VCC+)−1.5 V. Its internal EMI filter and 2 kV HBM ESD rating support robust operation in noisy motor control and industrial environments.

It achieves stable unity-gain-compensated operation only above gain +10 (non-inverting) or −9 (inverting), and maintains ≥63° phase margin driving 100 pF loads - critical for closed-loop current sense amplifiers where capacitive parasitics are unavoidable.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain Bandwidth Product	22 MHz - supports closed-loop bandwidth >1 MHz in gain ≥+10 configurations for fast current loop response.
Input Offset Voltage	±300 µV max at 25 °C - enables <0.3% full-scale error in 100 mV shunt-based current sensing without trimming.
Slew Rate	12 V/µs - ensures distortion-free amplification of 10 kHz signals with 120 Vpp swing under 36 V supply.
Input Voltage Noise	12 nV/√Hz at 10 kHz - preserves SNR in low-level strain gauge and Hall sensor outputs.
Supply Voltage Range	2.7 V to 36 V single supply - eliminates need for level-shifting in 12 V/24 V automotive and industrial rails.
Common-Mode Rejection	115 dB min at 25 °C (VCC− to VCC+−1.5 V) - rejects supply ripple and ground bounce in high-side sensing topologies.
Operating Temperature	−40 °C to +125 °C - qualified for under-hood automotive and factory-floor process control deployments.

Pinout & Package

SOT23-5 package: compact 2.9 mm × 1.6 mm surface-mount outline with exposed thermal pad (not electrically connected), rated for 190 °C/W junction-to-ambient thermal resistance.

Pin/Terminal	Circuit Role	Design Meaning
1 (OUT)	Output channel	Capable of sourcing/sinking 20 mA at 125 °C; rail-to-rail swing ensures full dynamic range utilization in single-supply data acquisition.
2 (VCC−)	Negative supply voltage	Reference node for dual-supply operation or ground return in single-supply; must be decoupled within 1 cm for stability.
3 (IN+)	Non-inverting input	High-impedance node (IIB ≤ 300 nA); accepts common-mode voltages up to VCC+ + 0.1 V - essential for high-side current sense amplifier inputs.
4 (IN−)	Inverting input	Differential pair input; combined with IN+ enables precision differential measurement with CMRR >110 dB over −40 °C to +125 °C.
5 (VCC+)	Positive supply voltage	Accepts up to +40 V absolute max; internal ESD diodes clamp transients to rails - requires series resistor if VIN exceeds VCC±0.2 V.

Key Features

Feature	Design Value
Rail-to-rail I/O	Enables full 0–36 V output swing and input common-mode range extending 100 mV beyond VCC+, eliminating level shifters in high-side sensing.
Integrated EMI Filter	Reduces susceptibility to 100 MHz–1 GHz RF interference - validated per IEC 61000-4-3, critical for motor drive PCBs near inverters.
Stable at Gain ≥+10	Guarantees no oscillation in non-inverting configurations used for current sense gain stages without external compensation.
2 kV HBM ESD Tolerance	Withstands electrostatic discharge during board assembly and field handling without latch-up or parametric shift.
Low 1/f Noise Corner	0.1 Hz–10 Hz input noise = 0.5 µVPP - preserves accuracy in slow-response industrial temperature and pressure transducers.

Applications

High-Side Current Sensing

Hall Effect Sensor Interface

Use Scenario: Monitoring battery pack charge/discharge current in EV BMS using 10 mΩ shunt resistor between battery positive and load.

IC Role / Device Role / Timing Role: Precision difference amplifier with gain +20, rejecting common-mode voltage up to 400 V via isolated feedback network.

Use Value: ±300 µV offset contributes <±0.3% error at 10 A full scale; rail-to-rail output drives ADC directly without level shift.

Use Scenario: Conditioning analog output of linear Hall IC (e.g., HAL 506) in automotive throttle position sensing.

IC Role / Device Role / Timing Role: Low-noise, DC-coupled buffer amplifying 0.5–4.5 V Hall output with 12 nV/√Hz noise floor.

Use Value: 125 °C operation ensures reliability in engine bay; EMI filter suppresses ignition coil noise without external ferrites.

Data Acquisition Front-End

Motor Phase Current Feedback

Use Scenario: Signal conditioning stage in 16-bit industrial DAQ module measuring thermocouple, RTD, and strain gauge outputs.

IC Role / Device Role / Timing Role: Programmable-gain amplifier (PGA) input stage with selectable gain (1–100) and 22 MHz bandwidth for anti-alias filtering.

Use Value: 22 MHz GBP allows sharp 100 kHz filter roll-off; low THD+N (0.0022%) preserves SFDR in multi-channel synchronized sampling.

Use Scenario: Real-time phase current measurement in 3-phase PMSM servo drive using shunt resistors on low-side switches.

IC Role / Device Role / Timing Role: Fast-settling current sense amplifier with 12 V/µs slew rate capturing PWM-edge transients without distortion.

Use Value: 125 °C rating matches IGBT junction temperature; stable at gain −9 enables inverting configuration for ground-referenced sensing.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TSB7191AILT	Lower initial offset (±300 µV vs ±800 µV), tighter drift (2.8 µV/°C vs 4 µV/°C), same package and pinout.	Better suited for high-accuracy calibration-critical systems (e.g., medical sensors) where trim is impractical.	Select TSB7191AILT when offset budget is <±500 µV across temperature; otherwise TSB7191ILT offers cost advantage.
TSB712AIST	Dual-channel SO8, 22 MHz GBP, but higher supply current (2.5 mA vs 1.8 mA) and no integrated EMI filter.	Preferred for space-constrained dual-signal paths (e.g., differential Hall + temperature), not single-channel high-EMI zones.	Choose TSB712AIST only when dual amplifiers are needed; TSB7191ILT provides superior EMI immunity and thermal performance in single-channel roles.

Compared with TSB7191AILT, the TSB7191ILT trades tighter initial offset for lower cost while maintaining identical stability, noise, and temperature range - making it optimal for cost-sensitive automotive and industrial current sensing. Against TSB712AIST, it offers superior single-channel EMI resilience and lower power in SOT23-5 footprint.

Availability

TSB7191ILT is available at Aetrix Electronics and suitable for high-side current sensing, Hall effect sensor interface, and motor phase current feedback requiring stable component supply across automotive, industrial automation, and test equipment programs.

Supply support for TSB7191ILT 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, power management ICs, analog chips, and MEMS sensors for industrial, automotive, and consumer markets.

The TSB7191 series belongs to ST's precision high-voltage op-amp product line, engineered specifically for accurate current sensing, transducer signal conditioning, and rugged industrial signal chains operating across extended temperature and supply ranges.

FAQ

What is the maximum capacitive load the TSB7191ILT can drive without instability?

The TSB7191ILT is guaranteed stable with 100 pF capacitive load at gain ≥+10 and 25 °C. Driving >100 pF requires external isolation resistor (≥10 Ω) between output and load, per Figure 24–25 in DS12641. Phase margin drops below 60° at 200 pF without compensation, risking ringing in current-sense feedback loops.

Does the TSB7191ILT support dual-supply operation, and what are the limits?

Yes - it operates from ±1.35 V to ±18 V dual supplies, with absolute maximum ratings of ±20 V. Input common-mode range extends from VCC− to (VCC+)+0.1 V, allowing inputs to swing 100 mV beyond either rail. Output swings rail-to-rail, delivering full ±18 V swing at ±18 V supplies with 20 mA load.

How does the input stage transition affect performance near VCC+?

At ~VCC+ −1 V, the complementary NPN/PNP input pairs transition, causing localized increase in input offset voltage (up to ±1.4 mV) and reduced CMRR (down to 70 dB). This region should be avoided in precision applications; biasing IN+ and IN− within VCC− to VCC+ −1.5 V ensures specified 115 dB CMRR and ±300 µV offset.

Can the TSB7191ILT be used as a comparator, and what precautions apply?

It is not optimized for comparator use due to lack of internal hysteresis and slow recovery from saturation (desaturation time >1 µs at 36 V). If used open-loop, differential input voltage must be limited to ±2 V or series input resistors added to cap current at 10 mA - otherwise ESD diodes conduct and risk damage per Section 5.2 of DS12641.

TSB7191ILT 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:: 12V/µs

Gain Bandwidth Product:: 22 MHz

-3db Bandwidth:: -

Current - Input Bias:: 300 nA

Voltage - Input Offset:: 1.2 mV

Current - Supply:: 1.8mA

Current - Output / Channel:: 50 mA

Voltage - Supply Span (Min):: 2.7 V

Voltage - Supply Span (Max):: 36 V

Operating Temperature:: -40°C ~ 125°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-5

TSB7191ILT FAQ

1.How can I place an order for TSB7191ILT through Aetrix?

Please submit a Request for Quotation (RFQ) for TSB7191ILT 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 TSB7191ILT reliable?

The price and inventory of TSB7191ILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSB7191ILT is usually 5 days.

3.What payment methods are accepted for TSB7191ILT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSB7191ILT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSB7191ILT?

TSB7191ILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSB7191ILT 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 TSB7191ILT?

For technical support, including TSB7191ILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSB7191ILT requirements.

6.How does Aetrix verify that TSB7191ILT is sourced from the original manufacturer or authorized distributors?

All TSB7191ILT 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 TSB7191ILT meets industry standards.

7.What is the process for return or replacement of TSB7191ILT?

All TSB7191ILT units undergo pre-shipment inspection (PSI). If there is an issue with TSB7191ILT, 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 TSB7191ILT part is unused and in its original packaging.

Return procedure for TSB7191ILT:

1.Submit a request within 90 days.

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

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