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

STMicroelectronics TS271IDT

Name: TS271IDT
Brand: STMicroelectronics
SKU: TS271IDT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS271IDT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: TS271IDT.pdf

Description:: IC OPAMP GP 1 CIRCUIT 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:2,125

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Product details

Overview

TS271IDT from STMicroelectronics is a programmable CMOS single operational amplifier designed for low-power, precision signal conditioning in single-supply systems. It features externally adjustable supply current (I_SET = 1.5 µA / 25 µA / 130 µA), rail-to-ground output swing, offset null capability, and input offset voltage as low as 0.25 mV (TS271BM grade). It is used in battery-powered sensor interfaces and portable instrumentation where power-speed trade-off control is critical.

For engineers reviewing the TS271IDT datasheet, TS271IDT pinout, TS271IDT application, or TS271IDT equivalent, key selection considerations include I_SET-programmable quiescent current, SO-8 package compatibility, −40°C to +125°C industrial temperature range, and CMOS input stage performance with pA-level bias current.

Technical Context

The TS271IDT implements a silicon-gate CMOS input stage enabling ultra-low input bias current (1 pA typ.) and minimal drift over temperature. Its architecture supports external I_SET resistor programming between pins 8 and 4 to select one of three discrete supply current operating points - directly scaling gain-bandwidth product (0.1 MHz to 2.3 MHz) and slew rate (0.04 V/µs to 4.5 V/µs).

Offset voltage is trimmed via external nulling circuitry connecting pins 1 and 5 to a potentiometer referenced to V_CC−, supporting guaranteed nulling for TS271ACX/BCX variants. The amplifier operates from 3 V to 16 V single supply, with common-mode input range extending to ground and output swinging fully to ground under load.

Key Specifications

Parameter	Value and Actual Design Meaning
I_SET Options	1.5 µA, 25 µA, or 130 µA - sets supply current, bandwidth, and slew rate
Input Offset Voltage	0.25 mV max (TS271BM grade) - enables high-accuracy DC amplification
Input Bias Current	1 pA typ. - minimizes error in high-impedance sensor front-ends
Supply Voltage Range	3 V to 16 V single supply - supports wide battery and industrial rail operation
Output Swing	Rail-to-ground (V_OL = 50 mV @ I_L = 1 mA) - allows full dynamic range in single-supply ADC drivers
Gain-Bandwidth Product	0.1 MHz (I_SET = 1.5 µA) to 2.3 MHz (I_SET = 130 µA) - scalable AC performance per power budget
Common-Mode Range	0 V to V_CC+ − 1.5 V - accommodates ground-referenced inputs in single-supply configs

Pinout & Package

TS271IDT is housed in an SO-8 (Small Outline-8) plastic micropackage per JEDEC MS-012, with 1.27 mm pitch, body dimensions 4.9 mm × 3.9 mm × 1.75 mm max, and gull-wing leads.

Pin/Terminal	Circuit Role	Design Meaning
1	Offset Null 1	Connects to one end of external nulling potentiometer (25 kΩ typical)
2	Inverting Input	Differential input node; high-impedance CMOS gate input (1 pA bias)
3	Non-inverting Input	Differential input node; identical impedance and bias behavior as Pin 2
4	V_CC−	Negative supply terminal; typically grounded in single-supply operation
5	Offset Null 2	Connects to other end of nulling potentiometer; referenced to V_CC−
6	Output	Class-AB output stage capable of ±30 mA short-circuit current
7	V_CC+	Positive supply terminal; supports 3–16 V operation
8	I_SET	Current-setting terminal; connects to external resistor to V_CC− to program supply current

Key Features

Feature	Design Value
Externally programmable I_SET	Selects optimal power-speed point without changing PCB layout or BOM
Rail-to-ground output	Enables direct interfacing with single-supply ADCs and microcontrollers
Offset voltage nulling	Supports <0.5 mV system offset calibration in precision measurement circuits
Ultra-low input bias current	Reduces leakage-induced errors in photodiode, pH probe, and piezoelectric sensor interfaces
Stable vs. supply variation	ICC, GBP, and SR remain consistent across 3–16 V supply range - simplifies design across battery states

Applications

Portable Gas Sensor Interface

Industrial Temperature Transmitter

Use Scenario: Amplifying low-level mV outputs from electrochemical gas sensors powered by coin-cell batteries.

IC Role / Device Role / Timing Role: Precision DC-coupled transimpedance and gain stage with rail-to-ground output driving 12-bit SAR ADC.

Use Value: 1.5 µA I_SET mode extends battery life >5 years while maintaining sub-mV offset accuracy via nulling.

Use Scenario: Conditioning Pt100 RTD bridge signals in 4–20 mA loop-powered field transmitters.

IC Role / Device Role / Timing Role: Low-drift instrumentation amplifier front-end with programmable gain and offset trimming.

Use Value: −40°C to +125°C rating and <2 µV/°C offset drift ensure stable 0.1% measurement accuracy across ambient extremes.

Medical ECG Front-End

Smart Energy Meter Analog Front-End

Use Scenario: Biopotential amplification in handheld ECG devices with strict leakage and noise requirements.

IC Role / Device Role / Timing Role: First-stage buffer and high-pass filter driver with ultra-low input current to minimize electrode polarization error.

Use Value: 1 pA input bias current prevents DC baseline shift during long-duration monitoring sessions.

Use Scenario: Voltage sensing channel in Class 0.5 polyphase energy meters operating from 3.3 V MCU rails.

IC Role / Device Role / Timing Role: High-impedance voltage divider buffer feeding metrology ADC with 2.45 V reference.

Use Value: 130 µA I_SET mode delivers 2.3 MHz GBP for anti-aliasing filter stability without compromising 16-bit ENOB.

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable low-power op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLC27L1CDR	Fixed 10 µA supply current; no I_SET programming; 1.4 mV max V_IO; SO-8 package	Lacks dynamic power-speed adjustment; suitable only for fixed low-power targets	Choose when design requires guaranteed 10 µA ICC but cannot accommodate external I_SET resistor routing
LPV521MG/NOPB	Fixed 320 nA supply current; rail-to-rail I/O; 1.25 mV max V_IO; SC-70-5 package	Lower power but non-programmable; smaller package limits thermal dissipation and nulling layout	Prefer for ultra-low-power (<1 µA) space-constrained designs where bandwidth ≤10 kHz suffices

Compared with TLC27L1CDR and LPV521MG/NOPB, TS271IDT uniquely provides three discrete, externally selectable I_SET points - enabling one hardware design to serve multiple power-performance tiers without component change or layout revision.

Availability

TS271IDT is available at Aetrix Electronics and suitable for portable medical devices, industrial process transmitters, smart metering systems, and battery-powered sensor nodes requiring stable component supply across extended temperature ranges.

Supply support for TS271IDT 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 TS271 belongs to ST's legacy precision analog portfolio, developed specifically for cost-sensitive, low-power industrial and instrumentation applications requiring programmable performance and extended temperature operation.

FAQ

What is the function of Pin 8 (I_SET) on the TS271IDT?

Pin 8 accepts an external resistor connected to V_CC− to set the amplifier's supply current to one of three discrete values: 1.5 µA, 25 µA, or 130 µA. This resistor value determines dynamic performance - including gain-bandwidth product (0.1–2.3 MHz) and slew rate (0.04–4.5 V/µs) - while maintaining stable operation across 3–16 V supply voltages.

Can the TS271IDT operate from a single 3.3 V supply?

Yes. The TS271IDT is fully specified for 3 V to 16 V single-supply operation. At 3.3 V, it maintains rail-to-ground output swing (V_OL ≤ 50 mV), common-mode input range down to 0 V, and functional I_SET programming. Performance metrics such as GBP and SR scale predictably with I_SET, enabling reliable use in 3.3 V IoT sensor nodes.

How is offset voltage nulling implemented on the TS271IDT?

Offset nulling uses Pins 1 and 5 as dedicated terminals for a 25 kΩ potentiometer connected between them, with the wiper tied to V_CC−. Adjusting the potentiometer balances internal input stage mismatches. Nulling is guaranteed for TS271ACX/BCX grades when I_SET > 25 µA or > 90 µA respectively; TS271IDT (I-grade) supports nulling across all I_SET settings per datasheet Figure 3.

Does the TS271IDT support dual-supply operation?

Yes. The TS271IDT supports dual-supply configurations (e.g., ±5 V, ±8 V) with V_CC+ on Pin 7 and V_CC− on Pin 4. In dual-supply mode, the common-mode input range extends from V_CC− + 1.5 V to V_CC+ − 1.5 V, and output swing remains symmetric about mid-supply. I_SET programming and offset nulling retain full functionality.

TS271IDT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 1

Output Type:: -

Slew Rate:: 0.04V/µs

Gain Bandwidth Product:: 100 kHz

-3db Bandwidth:: -

Current - Input Bias:: 1 pA

Voltage - Input Offset:: 1.1 mV

Current - Supply:: 10µA

Current - Output / Channel:: 45 mA

Voltage - Supply Span (Min):: 3 V

Voltage - Supply Span (Max):: 16 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

TS271IDT FAQ

1.How can I place an order for TS271IDT through Aetrix?

Please submit a Request for Quotation (RFQ) for TS271IDT 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 TS271IDT reliable?

The price and inventory of TS271IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS271IDT is usually 5 days.

3.What payment methods are accepted for TS271IDT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS271IDT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS271IDT?

TS271IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS271IDT 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 TS271IDT?

For technical support, including TS271IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS271IDT requirements.

6.How does Aetrix verify that TS271IDT is sourced from the original manufacturer or authorized distributors?

All TS271IDT 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 TS271IDT meets industry standards.

7.What is the process for return or replacement of TS271IDT?

All TS271IDT units undergo pre-shipment inspection (PSI). If there is an issue with TS271IDT, 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 TS271IDT part is unused and in its original packaging.

Return procedure for TS271IDT:

1.Submit a request within 90 days.

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

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