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STMicroelectronics TSX7191AIYLT
- Part No.:
- TSX7191AIYLT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TSX7191AIYLT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TSX7191AIYLT from STMicroelectronics is a single, decompensated, rail-to-rail input/output operational amplifier optimized for precision signal conditioning in automotive and industrial systems. It delivers 9 MHz gain bandwidth, 100 µV max input offset voltage (TSX7191A grade), 850 µA max supply current, and operates from 2.7 V to 16 V - enabling high-accuracy current sensing and sensor interfacing in battery-powered or wide-supply applications.
For engineers reviewing the TSX7191AIYLT datasheet, TSX7191AIYLT pinout, TSX7191AIYLT application, or TSX7191AIYLT equivalent, key selection criteria include its minimum stable gain of 10, ±4 kV HBM ESD rating, -40 °C to +125 °C operation, and SOT23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The TSX7191AIYLT uses a decompensated internal architecture requiring closed-loop gain ≥10 for stability, confirmed by phase margin ≥42° at G = 10 across 2.7–16 V supplies. Its rail-to-rail input stage extends common-mode range to VCC− − 0.1 V and VCC+ + 0.1 V, while rail-to-rail output drives within 15 mV of rails under 10 kΩ load at 25 °C.
Input bias current remains ≤50 pA (max) across temperature, enabling high-impedance sensor interfaces without significant DC error. The device achieves 102 dB CMRR at 4 V supply and maintains >90 dB up to 16 V, supporting precision instrumentation amplifier topologies with minimal common-mode feedthrough.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 9 MHz - enables stable closed-loop operation up to ~800 kHz at G = 10, suitable for active filtering and fast-settling sensor amplifiers. |
| Input Offset Voltage (max) | 100 µV - ensures ≤0.1% gain error in 1 V full-scale current-sense applications at 25 °C. |
| Supply Current (max) | 850 µA - supports multi-year battery life in portable instrumentation with continuous operation. |
| Rail-to-Rail I/O | Input CM range: VCC− − 0.1 V to VCC+ + 0.1 V; Output swing: within 15 mV of rails - maximizes dynamic range at low supply voltages like 2.7 V. |
| Stable Gain Minimum | ≥10 - mandates external resistor network configuration (e.g., Rf/Rin ≥ 9) to prevent oscillation in unity-gain or low-gain circuits. |
| ESD Tolerance | 4 kV HBM - meets automotive-level robustness requirements for direct interface with external sensors or connectors. |
| Operating Temperature | -40 °C to +125 °C - qualified for engine bay, powertrain, and industrial control environments without derating. |
Pinout & Package
SOT23-5 package: 5-pin ultra-small surface-mount outline with exposed thermal pad (not electrically connected), footprint compatible with automated assembly and reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Non-inverting input | High-impedance node (1 TΩ) accepting signals up to VCC+ + 0.1 V; requires series resistor if driven beyond rails to limit ESD diode current to ≤10 mA. |
| 2 (IN−) | Inverting input | Differential input node; used with feedback network to set closed-loop gain ≥10 for stability. |
| 3 (V−) | Negative supply rail | Ground reference for single-supply operation (0 V) or negative rail in dual-supply configurations. |
| 4 (OUT) | Amplifier output | Capable of sourcing/sinking ≥35 mA; drives resistive loads down to 2 kΩ while maintaining rail-to-rail swing. |
| 5 (V+) | Positive supply rail | Accepts 2.7–16 V; PSRR ≥100 dB ensures immunity to supply ripple in noisy automotive or industrial power domains. |
Key Features
| Feature | Design Value |
|---|---|
| Low input offset drift | 2.5 µV/°C - limits temperature-induced error to <300 µV over full -40 °C to +125 °C range, critical for uncalibrated sensor systems. |
| High CMRR | 102 dB at 4 V supply - rejects >99.9% of common-mode interference in differential measurement setups (e.g., shunt-based current sensing). |
| Low noise density | 22 nV/√Hz at 1 kHz - preserves SNR in low-level sensor outputs (e.g., thermopiles, strain gauges) without requiring additional filtering. |
| Wide supply range | 2.7–16 V - eliminates need for intermediate LDOs in mixed-voltage systems, simplifying power architecture for 3.3 V microcontrollers and 12 V vehicle buses. |
| Automotive qualification | AEC-Q100 Grade 1 - validated for reliability in automotive ECUs, meeting stress test requirements for temperature cycling, HTOL, and ESD. |
Applications
| Battery-Powered Instrumentation | High-Impedance Sensor Interface |
|---|---|
|
Use Scenario: Portable gas analyzers using electrochemical sensors with microamp-level output currents. IC Role / Device Role / Timing Role: Precision transimpedance amplifier converting sensor current to voltage with minimal offset and bias current error. Use Value: 50 pA max input bias current prevents loading of high-Z sensor electrodes, preserving signal integrity and calibration stability over time. |
Use Scenario: pH probe amplification in industrial water quality monitors operating from 4–20 mA loop power. IC Role / Device Role / Timing Role: Rail-to-rail input buffer isolating high-impedance glass electrode (≥1 GΩ) from downstream ADC driver circuitry. Use Value: Input CM range extending 0.1 V beyond rails allows direct connection to probe outputs near ground or supply without level-shifting components. |
| Current Sensing (High/Low Side) | Instrumentation Amplifier Front-End |
|
Use Scenario: Real-time motor phase current monitoring in 12 V automotive inverters with shunt resistors. IC Role / Device Role / Timing Role: High-side or low-side current sense amplifier with gain ≥10, rejecting common-mode voltage up to 16 V. Use Value: 102 dB CMRR and rail-to-rail output enable accurate 10-bit+ resolution on 3.3 V ADC inputs despite 12 V bus transients. |
Use Scenario: Bridge-based load cell signal conditioning in factory automation weighing systems. IC Role / Device Role / Timing Role: First-stage differential amplifier in 3-op-amp IA topology, setting initial gain and common-mode rejection. Use Value: 100 µV max Vos minimizes zero-error contribution before programmable gain stages, reducing calibration overhead. |
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 |
|---|---|---|---|
| TSX711IDT | Lower GBP (1.3 MHz), same 100 µV Vos, lower ICC (120 µA), unity-gain stable | Targeted at low-speed, ultra-low-power sensor buffering where bandwidth <100 kHz suffices | Select when minimizing quiescent current is prioritized over speed and gain flexibility is needed below G=10 |
| TSX921IYLT | Higher GBP (12 MHz), higher Vos (1.5 mV), higher ICC (1.2 mA), unity-gain stable | Designed for high-speed active filters and video signal paths requiring faster settling | Select when bandwidth >9 MHz is required and offset voltage tolerance can be relaxed to maintain stability at G=1 |
Compared with TSX7191AIYLT, TSX711IDT trades bandwidth for 7× lower supply current and eliminates minimum-gain constraints, while TSX921IYLT offers 33% more bandwidth but sacrifices 15× higher offset voltage and doubles power consumption - making TSX7191AIYLT optimal for automotive-grade, medium-speed precision sensing where gain ≥10 is acceptable.
Availability
TSX7191AIYLT is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive current sensing, industrial sensor interfaces, and precision analog front-ends requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TSX7191AIYLT 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 automotive, industrial, and consumer markets.
The TSX7191A belongs to ST's precision rail-to-rail op amp product line, engineered specifically for high-accuracy signal conditioning in harsh environments where low offset, wide supply range, and automotive qualification are mandatory.
FAQ
Can TSX7191AIYLT operate at unity gain?
No. The TSX7191AIYLT is decompensated and requires a minimum closed-loop gain of 10 for stability, as verified by phase margin ≥42° only at G ≥ 10. Attempting unity-gain configuration will cause oscillation. For unity-gain applications, consider the TSX921IYLT or TSX711IDT, both unity-gain stable alternatives listed in the datasheet.
What is the maximum capacitive load the output can drive without compensation?
The TSX7191AIYLT output remains stable with ≤100 pF capacitive load when driving a 10 kΩ resistive load, per datasheet Figure 24. Driving >100 pF (e.g., long cables or ADC input capacitance) requires isolation via a series resistor (≥100 Ω) or an external RC snubber to prevent peaking or oscillation, especially at gains near the minimum 10× threshold.
How does the input offset voltage change with supply voltage?
Input offset voltage remains stable across the full 2.7–16 V supply range, with no significant drift observed in Figures 7 and 9 of the datasheet. At 25 °C, Vos is 100 µV (max) regardless of supply voltage, and the 2.5 µV/°C drift coefficient applies uniformly - confirming supply-independent thermal behavior critical for systems with variable bus voltage.
Is the SOT23-5 package thermally enhanced?
The TSX7191AIYLT SOT23-5 package includes an exposed thermal pad (pin 6, not connected to any internal node) that must be soldered to a copper pour for optimal thermal performance. With proper PCB layout (≥100 mm² copper area), junction-to-ambient thermal resistance drops from 250 °C/W (no pad) to ~160 °C/W, enabling reliable operation at 125 °C ambient with ≤500 mW dissipation.
TSX7191AIYLT 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:
- 2.5V/µs
- Gain Bandwidth Product:
- 9 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 450 µV
- Current - Supply:
- 660µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TSX7191AIYLT FAQ
1.How can I place an order for TSX7191AIYLT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSX7191AIYLT 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 TSX7191AIYLT reliable?
The price and inventory of TSX7191AIYLT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSX7191AIYLT is usually 5 days.
3.What payment methods are accepted for TSX7191AIYLT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSX7191AIYLT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSX7191AIYLT?
TSX7191AIYLT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSX7191AIYLT 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 TSX7191AIYLT?
For technical support, including TSX7191AIYLT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSX7191AIYLT requirements.
6.How does Aetrix verify that TSX7191AIYLT is sourced from the original manufacturer or authorized distributors?
All TSX7191AIYLT 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 TSX7191AIYLT meets industry standards.
7.What is the process for return or replacement of TSX7191AIYLT?
All TSX7191AIYLT units undergo pre-shipment inspection (PSI). If there is an issue with TSX7191AIYLT, 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 TSX7191AIYLT part is unused and in its original packaging.
Return procedure for TSX7191AIYLT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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