Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

STMicroelectronics TSX921IYLT

Name: TSX921IYLT
Brand: STMicroelectronics
SKU: TSX921IYLT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: TSX921IYLT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: SC-74A, SOT-753

Datasheet:: TSX921IYLT.pdf

Description:: IC OPAMP GP 1 CIRCUIT SOT23-5

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,924

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

TSX921IYLT from STMicroelectronics is a rail-to-rail input/output single operational amplifier optimized for high-speed, low-distortion signal conditioning in 4 V–16 V supply systems. It delivers 10 MHz gain bandwidth, 17.2 V/μs negative slew rate, and 0.0003 % THD+N at 1 kHz with 4 V_RMS output - enabling precision active filtering and I/V conversion for ADC front-ends in automotive and industrial test equipment.

For engineers reviewing the TSX921IYLT datasheet, TSX921IYLT pinout, TSX921IYLT application, or TSX921IYLT equivalent, key selection criteria include its extended -40 °C to 125 °C operating range, 10 pA typical input bias current, 4 kV HBM ESD rating, and SOT23-5 package compatibility with space-constrained PCB layouts.

Technical Context

The TSX921IYLT employs a CMOS input stage with rail-to-rail common-mode input voltage range (V_CC- − 0.1 V to V_CC+ + 0.1 V) and rail-to-rail output swing within 50 mV of each rail at 10 kΩ load. Its unity-gain-stable architecture supports direct use in buffer, gain, and active filter configurations without external compensation.

It achieves 85 dB CMRR at 16 V supply and 73 dB PSRR across 10 Hz–1 MHz, with low-frequency noise of 8.58 µV_PP (0.1–10 Hz) and 16.5 nV/√Hz at 10 kHz - confirming suitability for high-resolution sensor signal amplification where DC accuracy and AC fidelity are jointly critical.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain Bandwidth Product	10 MHz typ at 16 V - enables stable closed-loop operation up to 10× gain at 1 MHz or unity gain at 10 MHz.
Slew Rate (SR−)	17.2 V/μs typ at 16 V - supports fast settling of large-signal transients in data acquisition paths.
Input Bias Current	10 pA typ - minimizes offset error in high-impedance sensor interfaces (e.g., photodiode TIA).
THD+N	0.0003 % at 1 kHz, 4 V_RMS, 16 V supply - ensures minimal harmonic corruption in audio and instrumentation signal chains.
Common-Mode Range	V_CC− − 0.1 V to V_CC+ + 0.1 V - allows direct sensing of signals near supply rails without level-shifting.
ESD Rating	4 kV HBM - provides robustness against handling-induced discharge in automotive assembly and field service.
Operating Temperature	−40 °C to +125 °C - qualified for under-hood automotive and industrial control environments.

Pinout & Package

SOT23-5 package: 2.9 mm × 1.6 mm × 1.1 mm body, 0.95 mm pitch, surface-mount, lead-free, RoHS-compliant.

Pin	Circuit Role	Design Meaning
1	V_CC+	Positive supply terminal - must be decoupled with ≥100 nF ceramic capacitor close to pin.
2	IN−	Inverting input - high-impedance node; sensitive to layout parasitics and EMI coupling.
3	OUT	Amplifier output - capable of sourcing/sinking ≥45 mA at 16 V, driving 2 kΩ loads to rail.
4	V_CC−	Negative supply / ground reference - low-impedance return path essential for stability.
5	IN+	Non-inverting input - rail-to-rail common-mode range enables direct connection to sensors at any DC level.

Key Features

Feature	Design Value
Rail-to-rail I/O	Enables full dynamic range utilization in single-supply systems (e.g., 5 V or 12 V microcontroller-based data loggers).
10 MHz GBP @ 16 V	Supports wideband active filters (e.g., 2nd-order Butterworth ≤1.6 MHz) without gain-bandwidth trade-off penalties.
10 pA I_IB	Reduces voltage error in 1 MΩ feedback networks to <0.1 mV - critical for precision current-sense amplifiers.
8.58 µV_PP (0.1–10 Hz)	Meets sub-16-bit ENOB requirements in low-frequency sensor readout (e.g., strain gauge bridges).
Automotive qualification	Complies with AEC-Q100 Grade 1 - validated for reliability in engine control units and ADAS power domains.

Applications

Communications Signal Conditioning

Industrial Process Control Loop

Use Scenario: Amplifying low-level RF detector outputs in cellular base station monitoring circuits.

IC Role / Device Role / Timing Role: Precision DC-coupled I/V converter feeding 16-bit SAR ADC with 1 MSPS sampling.

Use Value: 0.0003 % THD+N preserves spectral purity; rail-to-rail input captures full detector voltage swing (0–3.3 V) without clipping.

Use Scenario: Isolating and scaling 4–20 mA current loop signals in PLC analog input modules.

IC Role / Device Role / Timing Role: High-Z differential receiver with programmable gain, driving isolated sigma-delta modulator.

Use Value: 10 pA I_IB prevents loading error on precision shunt resistors; 125 °C rating ensures uptime in cabinet-mounted controllers.

Automotive Battery Monitoring

Test Equipment Front-End

Use Scenario: Measuring cell voltage in 12 V lead-acid battery management systems with ±10 mV accuracy.

IC Role / Device Role / Timing Role: Rail-to-rail buffer for high-side sensing, rejecting common-mode ripple up to 100 kHz.

Use Value: 85 dB CMRR at 16 V suppresses switching noise from adjacent DC-DC converters; AEC-Q100 compliance ensures field longevity.

Use Scenario: Driving 50 Ω coaxial cables in automated test equipment (ATE) waveform generators.

IC Role / Device Role / Timing Role: Low-noise, high-slew-rate output driver with controlled impedance matching.

Use Value: 17.2 V/μs SR− settles 10 V steps in <600 ns; 4 kV HBM withstands probe contact ESD during lab reconfiguration.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TSV911ICT	Lower supply range (2.7–5.5 V), 8 MHz GBP, 15 V/μs slew rate, no automotive qualification.	Targeted at portable consumer electronics, not 12/24 V industrial or automotive systems.	Select only if operating below 5.5 V and automotive qualification is unnecessary.
LMV721IDBVR	Wider temperature range (−40 °C to 125 °C), 10 MHz GBP, but 100 pA I_IB, 0.001 % THD+N, no AEC-Q100.	Acceptable for industrial test gear, but insufficient for precision automotive sensor interfaces requiring ultra-low I_IB.	Choose when cost is prioritized over input bias current and automotive compliance.

Compared with TSV911ICT and LMV721IDBVR, the TSX921IYLT uniquely combines 4–16 V operation, 10 pA input bias, AEC-Q100 Grade 1, and 0.0003 % THD+N - making it the only drop-in solution for high-fidelity, high-voltage, automotive-grade signal conditioning.

Availability

TSX921IYLT is available at Aetrix Electronics and suitable for automotive battery monitors, industrial PLC analog inputs, communications base station detectors, and automated test equipment requiring stable component supply across extended temperature and voltage ranges.

Supply support for TSX921IYLT 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 designing and manufacturing analog, MCU, power, and sensor solutions for automotive, industrial, and consumer markets.

The TSX92x family was developed specifically for high-speed, rail-to-rail precision amplification in harsh-environment applications - emphasizing low distortion, wide supply tolerance, and automotive reliability.

FAQ

Is the TSX921IYLT pin-compatible with other SOT23-5 op amps?

No - while physically compatible with standard SOT23-5 footprints, its pinout (V_CC+, IN−, OUT, V_CC−, IN+) differs from industry-standard arrangements like the LMV321. Layout redesign is required for replacement; verify routing against Figure 1 in DS9502 Rev 5.

Does the TSX921IYLT support shutdown mode?

No - shutdown functionality is only available on the TSX920 (SOT23-6) and TSV923 (MiniSO10) variants. The TSX921IYLT lacks a SHDN pin and operates continuously when powered; system-level power gating must be implemented externally.

What is the maximum capacitive load the TSX921IYLT can drive stably?

It remains stable with ≤100 pF capacitive load in unity-gain configuration without feedback capacitor. With 20 pF load, phase margin is 55° at 16 V; adding a 2–3 pF feedback capacitor restores >60° margin for loads up to 200 pF, per Figure 28 in DS9502.

How does input offset voltage drift behave over temperature and time?

Typical ∆V_IO/∆T is 2–10 μV/°C; long-term drift is 1.73 nV/√month at 16 V. Drift accelerates above 125 °C or under sustained high differential input voltage - avoid comparator-mode operation with Vicm > V_CC/2 at elevated temperatures to prevent permanent offset shift.

TSX921IYLT 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:: 17V/µs

Gain Bandwidth Product:: 10 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

TSX921IYLT FAQ

1.How can I place an order for TSX921IYLT through Aetrix?

Please submit a Request for Quotation (RFQ) for TSX921IYLT 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 TSX921IYLT reliable?

The price and inventory of TSX921IYLT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSX921IYLT is usually 5 days.

3.What payment methods are accepted for TSX921IYLT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSX921IYLT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSX921IYLT?

TSX921IYLT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSX921IYLT 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 TSX921IYLT?

For technical support, including TSX921IYLT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSX921IYLT requirements.

6.How does Aetrix verify that TSX921IYLT is sourced from the original manufacturer or authorized distributors?

All TSX921IYLT 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 TSX921IYLT meets industry standards.

7.What is the process for return or replacement of TSX921IYLT?

All TSX921IYLT units undergo pre-shipment inspection (PSI). If there is an issue with TSX921IYLT, 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 TSX921IYLT part is unused and in its original packaging.

Return procedure for TSX921IYLT:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…