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

STMicroelectronics TSX9291IYLT

Name: TSX9291IYLT
Brand: STMicroelectronics
SKU: TSX9291IYLT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSX9291IYLT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: SC-74A, SOT-753

Datasheet:: TSX9291IYLT.pdf

Description:: IC OPAMP GP 1 CIRCUIT SOT23-5

Quantity:: RFQ Add To RFQ list

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Inventory:8,319

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Product details

Overview

TSX9291IYLT from STMicroelectronics is a single-channel, rail-to-rail input/output CMOS operational amplifier optimized for high-speed, wide-supply applications. It delivers 16 MHz gain bandwidth, 27 V/µs slew rate, and 0.0003 % THD+N at 1 kHz with 4 V–16 V supply, enabling precision signal conditioning in automotive-grade active filtering and I/V conversion for ADC front-ends.

For engineers reviewing the TSX9291IYLT datasheet, TSX9291IYLT pinout, TSX9291IYLT application, or TSX9291IYLT equivalent, this device is selected for designs requiring unity-gain-stable decompensated performance, extended temperature operation (−40 °C to +125 °C), ESD-hardened (4 kV HBM) analog signal paths, and stable behavior at gains ≥2 or ≤−1.

Technical Context

The TSX9291IYLT is a decompensated op amp with internal compensation tailored for minimum stable gain of +2 or −1 - not unity-gain stable - ensuring phase margin ≥60° under those conditions. Its rail-to-rail input stage uses complementary PMOS/NMOS differential pairs, while the output stage employs Class AB push-pull architecture supporting ±21 mA drive into 2 kΩ loads at 16 V.

It operates across 4 V–16 V single-supply or ±2 V–±8 V dual-supply configurations, with common-mode input range extending 0.1 V beyond rails and output swing within 15 mV of each rail at light load. Input bias current remains ultra-low (10 pA typ) across temperature due to CMOS input topology.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain Bandwidth Product	16 MHz at 16 V - enables closed-loop bandwidth up to ~8 MHz at gain = +2 without instability.
Slew Rate	27 V/µs (positive), 22 V/µs (negative) at 16 V - supports fast settling (<250 ns to 0.1%) for 100 mV step inputs.
Supply Voltage Range	4 V to 16 V - compatible with 5 V, 12 V, and automotive 13.5 V nominal systems without level-shifting.
Input Offset Voltage	4–5 mV max over −40 °C to +125 °C - ensures <1 LSB error in 12-bit ADC driver applications at 4 V full-scale.
THD+N	0.0003 % at 1 kHz, 4 Vrms output, 16 V supply - meets audio-grade and precision sensor signal chain requirements.
ESD Rating	4 kV HBM - provides robustness against handling and board-level transients in automotive and industrial environments.
Operating Temperature	−40 °C to +125 °C - qualified per AEC-Q100 Grade 1, suitable for engine control and powertrain modules.

Pinout & Package

SOT23-5 package: compact 5-pin surface-mount outline with exposed thermal pad (not electrically connected), footprint compatible with automated reflow assembly and space-constrained PCB layouts.

Pin/Terminal	Circuit Role	Design Meaning
1 (OUT)	Output	Push-pull rail-to-rail voltage source capable of sourcing/sinking ≥16 mA at 16 V; connects directly to ADC input or filter node.
2 (−IN)	Inverting Input	Differential input terminal with 1 TΩ input resistance and 8 pF capacitance; requires low-impedance feedback network for stability.
3 (V−)	Negative Supply	Ground reference or negative rail connection; must be decoupled with ≥100 nF ceramic capacitor near pin.
4 (+IN)	Non-inverting Input	High-impedance input (10 pA bias current) accepting signals from sensors or DACs; rail-to-rail common-mode range (V− −0.1 V to V+ +0.1 V).
5 (V+)	Positive Supply	Main power input (4–16 V); supplies internal bias and output stage; requires local 100 nF + 1 µF bulk decoupling.

Key Features

Feature	Design Value
Rail-to-rail input and output	Enables full dynamic range utilization in single-supply systems - e.g., 0–16 V input accepted, 0.015 V to 15.985 V output swing at 16 V supply.
Stable at gain ≥2 or ≤−1	Eliminates need for external compensation in non-inverting amplifier, difference amplifier, or inverting integrator topologies with \|G\| ≥2.
Low input bias current (10 pA)	Minimizes voltage error across high-value feedback resistors (>1 MΩ), critical for photodiode transimpedance amplifiers.
16 MHz GBW with 27 V/µs SR	Supports >10 MSPS sampling in ADC driver circuits with <0.1% settling error, even with 10 kΩ load and 20 pF parasitic capacitance.
Automotive qualification (AEC-Q100)	Validated for use in safety-critical subsystems including battery management, motor control feedback, and ADAS sensor interfaces.

Applications

Active Filtering

I/V Conversion for ADC

Use Scenario: 2nd-order Sallen-Key low-pass filter at 100 kHz cutoff in motor current sensing path.

IC Role / Device Role / Timing Role: High-GBW, low-noise op amp implementing filter transfer function with minimal phase distortion.

Use Value: 16 MHz GBW ensures >10× oversampling ratio; rail-to-rail output drives ADC reference directly without level shifters.

Use Scenario: Transimpedance amplifier converting 100 nA–10 µA photodiode current to 0–3.3 V for 12-bit SAR ADC.

IC Role / Device Role / Timing Role: Precision current-to-voltage converter with ultra-low input bias current and low 1/f noise.

Use Value: 10 pA input bias avoids offset drift in high-Z feedback networks; 8.6 µVpp 0.1–10 Hz noise preserves DC accuracy.

High-Speed Communications

Process Control Signal Conditioning

Use Scenario: Line driver/receiver buffer in isolated RS-485 interface with 25 Mbps data rate.

IC Role / Device Role / Timing Role: Fast-settling amplifier shaping edge integrity and compensating cable capacitance.

Use Value: 27 V/µs slew rate maintains <1 ns jitter on 100 mV transitions; 0.0003 % THD+N prevents harmonic interference in multi-drop bus.

Use Scenario: Analog front-end for 4–20 mA loop transmitter with HART modulation capability.

IC Role / Device Role / Timing Role: Rail-to-rail I/V converter and output buffer operating from 12 V loop supply.

Use Value: 4–16 V supply range matches industrial loop voltage; 125 °C rating supports enclosure mounting near heat sources.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TSX9292IST	Dual-channel version in SO8; identical AC specs but higher ICC (3.6 mA/ch at 16 V vs. 2.8 mA for TSX9291).	Used where two matched amplifiers required (e.g., instrumentation amplifier core); occupies larger PCB area.	Select when channel count >1 is needed and SO8 layout is acceptable; avoid if single-channel SOT23-5 space constraint applies.
TSV911ILT	Unity-gain stable; lower GBP (8 MHz), lower slew rate (5.5 V/µs), wider supply (2.5–5.5 V only).	Targeted at low-voltage portable systems; unsuitable for 12 V/16 V rails or >1 MHz closed-loop bandwidth.	Choose only for battery-powered 3.3 V designs requiring unity-gain stability; not a drop-in replacement for TSX9291IYLT.

Compared with TSX9292IST and TSV911ILT, TSX9291IYLT uniquely balances high-speed performance (16 MHz/27 V/µs), wide supply (4–16 V), and minimal footprint (SOT23-5), making it optimal for space- and voltage-constrained automotive and industrial signal chains where gain ≥2 is acceptable.

Availability

TSX9291IYLT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial process controllers, and high-fidelity test equipment requiring stable component supply across extended temperature and voltage ranges.

Supply support for TSX9291IYLT 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 MEMS products for industrial, automotive, and consumer markets.

The TSX92xx series was developed specifically for high-speed, rail-to-rail operational amplifiers targeting automotive-qualified signal conditioning in harsh-environment applications such as engine control, battery monitoring, and ADAS sensor front-ends.

FAQ

Is TSX9291IYLT unity-gain stable?

No. TSX9291IYLT is decompensated and requires minimum closed-loop gain of +2 (non-inverting) or −1 (inverting) for stability, as confirmed by phase margin ≥60° testing per datasheet Figure 13–19. Using it at unity gain risks oscillation, especially with capacitive loads >10 pF or high-Z feedback networks.

What is the maximum capacitive load it can drive without compensation?

At gain ≥2 and 16 V supply, TSX9291IYLT remains stable with ≤20 pF capacitive load (per Figure 22). For >20 pF (e.g., long traces or ADC input capacitance), a feedback capacitor (C_f = 5–12 pF) is required to maintain phase margin, as demonstrated in Figure 24.

Does it support dual-supply operation?

Yes. TSX9291IYLT operates with split supplies from ±2 V to ±8 V (equivalent to 4–16 V total), maintaining rail-to-rail input/output swing and specified AC performance - verified in Tables 4–6 across V_CC+/V_CC− combinations including ±5 V and ±7.5 V.

How does its ESD robustness compare to standard op amps?

With 4 kV HBM rating (JEDEC JESD22-A114F), TSX9291IYLT exceeds typical op amp ESD tolerance (typically 1–2 kV) and meets automotive system-level transient immunity requirements, reducing need for external TVS protection in board-level ESD-prone zones like connectors and sensors.

TSX9291IYLT 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:: 27V/µs

Gain Bandwidth Product:: 16 MHz

-3db Bandwidth:: -

Current - Input Bias:: 10 pA

Voltage - Input Offset:: 4 mV

Current - Supply:: 2.8mA

Current - Output / Channel:: 74 mA

Voltage - Supply Span (Min):: 4 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

TSX9291IYLT FAQ

1.How can I place an order for TSX9291IYLT through Aetrix?

Please submit a Request for Quotation (RFQ) for TSX9291IYLT 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 TSX9291IYLT reliable?

The price and inventory of TSX9291IYLT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSX9291IYLT is usually 5 days.

3.What payment methods are accepted for TSX9291IYLT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSX9291IYLT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSX9291IYLT?

TSX9291IYLT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSX9291IYLT 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 TSX9291IYLT?

For technical support, including TSX9291IYLT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSX9291IYLT requirements.

6.How does Aetrix verify that TSX9291IYLT is sourced from the original manufacturer or authorized distributors?

All TSX9291IYLT 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 TSX9291IYLT meets industry standards.

7.What is the process for return or replacement of TSX9291IYLT?

All TSX9291IYLT units undergo pre-shipment inspection (PSI). If there is an issue with TSX9291IYLT, 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 TSX9291IYLT part is unused and in its original packaging.

Return procedure for TSX9291IYLT:

1.Submit a request within 90 days.

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

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