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

Texas Instruments TLC2274AMDREP

Name: TLC2274AMDREP
Brand: Texas Instruments
SKU: TLC2274AMDREP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLC2274AMDREP

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: TLC2274AMDREP.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14SOIC

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Product details

Overview

TLC2274AMDREP from Texas Instruments is a quad rail-to-rail output operational amplifier optimized for precision, low-noise signal conditioning in extended-temperature industrial and aerospace applications. It delivers 2.2 MHz gain-bandwidth product, 3.6 V/µs slew rate, 9 nV/√Hz input voltage noise at 1 kHz, 1 pA typical input bias current, and 950 µV maximum input offset voltage at 25°C - enabling high-fidelity amplification of piezoelectric sensor outputs and ADC interface circuits.

For engineers reviewing the TLC2274AMDREP datasheet, TLC2274AMDREP pinout, TLC2274AMDREP application, or TLC2274AMDREP equivalent, this page provides verified electrical specifications, package mapping to SOIC-14 (D), thermal performance across −55°C to +125°C, and validated alternatives for design continuity in harsh-environment analog signal chains.

Technical Context

The TLC2274AMDREP employs Advanced LinCMOS™ process technology to achieve rail-to-rail output swing while maintaining low input bias current and low noise - critical for high-impedance source interfacing. Its fully differential input stage supports common-mode input voltage down to the negative rail, and its unity-gain stable architecture ensures robust operation with capacitive loads up to 100 pF.

Characterized over ±2.2 V to ±8 V supply range and qualified per JEDEC standards for extended temperature reliability, the device integrates ESD protection, internal trimming, and bias circuitry validated for 150°C life testing. It exhibits 50° phase margin and 10 dB gain margin at unity gain with 10 kΩ load and 100 pF capacitance.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain-bandwidth product	2.2 MHz typ - enables stable closed-loop gain ≥10 at 200 kHz for anti-aliasing filter buffers.
Slew rate	3.6 V/µs typ - supports 0.5 Vpp full-scale step response within 1.5 µs at AV = −1.
Input offset voltage	950 µV max at 25°C - ensures ≤0.02% error in 5 V full-scale instrumentation amplifier front-ends.
Input bias current	1 pA typ - preserves signal integrity when amplifying outputs from >1 GΩ sources (e.g., piezoelectric transducers).
Output swing	Rail-to-rail - delivers 4.99 Vpp into 50 µA load at 5 V supply, maximizing dynamic range into SAR ADC reference inputs.
Supply voltage range	±2.2 V to ±8 V - supports dual-supply operation in legacy industrial control systems and single-supply 5 V designs.
Operating temperature	−55°C to +125°C - qualified for space-constrained avionics, downhole sensors, and military-grade power monitoring.

Pinout & Package

Package: SOIC-14 (D) - 8.65 mm × 3.91 mm body, 1.27 mm pitch, RoHS-compliant, rated for 260°C reflow.

Pin/Terminal	Circuit Role	Design Meaning
1	OUT1	Inverting amplifier output - drives low-impedance loads up to ±50 mA; rail-to-rail swing supports direct ADC input coupling.
2	IN1−	Inverting input - high-impedance node (10¹² Ω) for feedback network connection; accepts common-mode voltage down to VDD−.
3	IN1+	Non-inverting input - matched to IN1− for precision differential gain; immune to input bias current errors due to 1 pA typ.
4	VDD− / GND	Negative supply or ground reference - dual-supply mode connects to −VDD; single-supply mode ties to system ground.
5	IN2+	Non-inverting input of second op amp - electrically isolated from Channel 1; enables independent sensor channel buffering.
6	IN2−	Inverting input of second op amp - supports unity-gain follower or inverting configuration without crosstalk.
7	OUT2	Output of second op amp - identical AC/DC specs to OUT1; allows dual-channel signal conditioning on one die.
8	VDD+	Positive supply - accepts 4.4 V to 16 V (single) or ±2.2 V to ±8 V (dual); internal regulation ensures stable bias over temp.
9	OUT3	Output of third op amp - shares same thermal and noise floor as Channels 1–2; enables 3-channel simultaneous sampling.
10	IN3−	Inverting input of third op amp - matched input capacitance (8 pF) minimizes phase shift in multi-pole active filters.
11	IN3+	Non-inverting input of third op amp - referenced to same common-mode range as all channels (VDD− to VDD+ −1.5 V).
12	IN4+	Non-inverting input of fourth op amp - supports independent reference buffer or level-shifting function in quad-sensor systems.
13	IN4−	Inverting input of fourth op amp - enables precision summing or difference amplification with <0.004% THD+N at 20 kHz.
14	OUT4	Output of fourth op amp - delivers 1.4 µVpp integrated noise (0.1–10 Hz), suitable for ultra-low-drift thermocouple amplifiers.

Key Features

Feature	Design Value
Rail-to-rail output swing	Delivers >99.8% of full supply range (e.g., 4.99 Vpp at 5 V), eliminating need for level-shifting before 12-bit+ SAR ADCs.
Low input voltage noise	9 nV/√Hz at 1 kHz - 2× lower than TLC274, enabling resolution improvement in strain-gauge bridge amplifiers.
Extended temperature qualification	Tested per JEDEC JESD22-A108 to −55°C/+125°C with HAST, temperature cycling, and intermetallic life validation.
Ultra-low input bias current	1 pA typical - reduces voltage error to <1 mV across 1 GΩ source impedance, critical for pH electrode and photodiode interfaces.
Single- and split-supply operation	Fully specified at 5 V and ±5 V - simplifies migration from legacy TS274/TLC274 designs without layout changes.
Enhanced DMS support	Controlled baseline with one assembly/test site and one fabrication site - ensures long-term supply continuity for defense programs.

Applications

Piezoelectric Sensor Signal Conditioning	Industrial ADC Driver Interface
Use Scenario: Amplifying high-impedance, low-level charge outputs from accelerometers and ultrasonic transducers in vibration monitoring systems. IC Role / Device Role: First-stage charge-to-voltage converter and gain stage with unity-gain stability and minimal loading. Use Value: 1 pA input bias current prevents signal decay across >1 GΩ sensor impedance; rail-to-rail output maximizes SNR into 16-bit ADCs.	Use Scenario: Driving the input of precision SAR ADCs (e.g., ADS8860) in programmable logic controllers and motor drive current sensing. IC Role / Device Role: Buffer and level-shifter ensuring full-scale input compliance and fast settling (<1.5 µs to 0.1%) before conversion. Use Value: 3.6 V/µs slew rate and 2.2 MHz GBW enable accurate 100 kSPS sampling; low THD+N (0.004%) preserves ENOB.
Harsh-Environment Temperature Monitoring	Quad-Channel Medical Front-End
Use Scenario: Cold-junction compensation and linearization of thermocouples in oil/gas downhole tools operating at 125°C ambient. IC Role / Device Role: Precision instrumentation amplifier front-end with matched input pairs and low drift (2 µV/°C). Use Value: 950 µV max VIO and 2 µV/°C TC ensure <±0.5°C absolute accuracy over full temperature range without calibration.	Use Scenario: Simultaneous amplification of ECG, respiration, temperature, and SpO₂ sensor signals in portable patient monitors. IC Role / Device Role: Quad-channel signal conditioner providing independent gain, filtering, and DC offset control per channel. Use Value: Four matched amplifiers in one SOIC-14 reduce board area by 60% vs discrete solutions; low noise preserves microvolt-level biopotentials.

Piezoelectric Sensor Signal Conditioning

Industrial ADC Driver Interface

Use Scenario: Amplifying high-impedance, low-level charge outputs from accelerometers and ultrasonic transducers in vibration monitoring systems.

IC Role / Device Role: First-stage charge-to-voltage converter and gain stage with unity-gain stability and minimal loading.

Use Value: 1 pA input bias current prevents signal decay across >1 GΩ sensor impedance; rail-to-rail output maximizes SNR into 16-bit ADCs.

Use Scenario: Driving the input of precision SAR ADCs (e.g., ADS8860) in programmable logic controllers and motor drive current sensing.

IC Role / Device Role: Buffer and level-shifter ensuring full-scale input compliance and fast settling (<1.5 µs to 0.1%) before conversion.

Use Value: 3.6 V/µs slew rate and 2.2 MHz GBW enable accurate 100 kSPS sampling; low THD+N (0.004%) preserves ENOB.

Harsh-Environment Temperature Monitoring

Quad-Channel Medical Front-End

Use Scenario: Cold-junction compensation and linearization of thermocouples in oil/gas downhole tools operating at 125°C ambient.

IC Role / Device Role: Precision instrumentation amplifier front-end with matched input pairs and low drift (2 µV/°C).

Use Value: 950 µV max VIO and 2 µV/°C TC ensure <±0.5°C absolute accuracy over full temperature range without calibration.

Use Scenario: Simultaneous amplification of ECG, respiration, temperature, and SpO₂ sensor signals in portable patient monitors.

IC Role / Device Role: Quad-channel signal conditioner providing independent gain, filtering, and DC offset control per channel.

Use Value: Four matched amplifiers in one SOIC-14 reduce board area by 60% vs discrete solutions; low noise preserves microvolt-level biopotentials.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLC2274AMPWREP	TSSOP-14 package (5.0 × 6.4 mm); identical electrical specs but 30% smaller footprint and higher thermal resistance (θJA = 120°C/W vs 90°C/W).	Better suited for space-constrained PCBs where thermal management is handled externally; not recommended for >85°C ambient without derating.	Select when board real estate is critical and ambient temperature remains ≤70°C; verify thermal margin using TI's thermal calculator.
OPA4340UA	Lower input offset voltage (125 µV max), higher GBW (5.5 MHz), but higher supply current (750 µA/channel vs 1.5 mA total for TLC2274AMDREP).	Preferred for battery-powered medical devices requiring ultra-low offset; less suitable for wide-temp industrial use due to −40°C to +85°C rating.	Choose for precision DC-coupled applications below 85°C; avoid where extended temperature or low quiescent current is mandatory.

Compared with TLC2274AMPWREP and OPA4340UA, the TLC2274AMDREP uniquely balances extended temperature operation (−55°C to +125°C), ultra-low input bias current (1 pA), and SOIC-14 manufacturability - making it the only option qualified for aerospace-grade analog signal chains requiring long-term DMS continuity.

Availability

TLC2274AMDREP is available at Aetrix Electronics and suitable for industrial automation, avionics subsystems, and downhole instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLC2274AMDREP 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

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with over 90 years of innovation in high-reliability components.

The TLC227x family was designed specifically for precision, low-power, rail-to-rail output amplification in extended-temperature industrial, aerospace, and medical systems - succeeding the TLC27x series with improved noise, offset, and dynamic range.

FAQ

What is the maximum supply voltage for TLC2274AMDREP?

The TLC2274AMDREP supports a maximum supply voltage of ±8 V in split-supply mode or 16 V in single-supply mode, as specified in its Absolute Maximum Ratings table. Operation beyond these limits risks permanent damage. For reliable long-term performance, TI recommends staying within the Recommended Operating Conditions of ±2.2 V to ±8 V (or 4.4 V to 16 V single-supply), where all electrical characteristics are guaranteed across −55°C to +125°C.

Does TLC2274AMDREP support rail-to-rail input?

No, the TLC2274AMDREP does not support rail-to-rail input. Its common-mode input voltage range extends to the negative rail (VDD−) but only up to VDD+ − 1.5 V under standard test conditions. This limitation is explicitly defined in the Recommended Operating Conditions table. While the output swings rail-to-rail, the input stage requires headroom on the positive side - a key distinction from true RRI/RRO op-amps like the OPAx320 series.

Is TLC2274AMDREP pin-compatible with TLC274 or TS274?

Yes, the TLC2274AMDREP is pin-compatible with the TLC274 and TS274 in SOIC-14 (D) packages, sharing identical pinout and footprint. TI explicitly positions it as a "performance upgrade" for these legacy parts, offering lower noise, lower input offset voltage, and rail-to-rail output - all without requiring PCB redesign. However, designers must verify that the improved output swing does not violate downstream stage input voltage limits.

What is the thermal resistance (θJA) of TLC2274AMDREP in SOIC-14 package?

The TLC2274AMDREP in SOIC-14 (D) package has a junction-to-ambient thermal resistance (θJA) of 90°C/W, as documented in TI's Thermal Characteristics table for the D package. This value assumes standard JEDEC 2-layer board conditions (1-inch² copper pad). Actual thermal performance depends on PCB layout; adding thermal vias and copper pour can reduce effective θJA by up to 30%, critical for operation near the 125°C upper limit.

Can TLC2274AMDREP drive capacitive loads directly?

Yes, the TLC2274AMDREP is unity-gain stable and characterized to drive up to 100 pF capacitive loads while maintaining ≥50° phase margin and 10 dB gain margin, as confirmed in its Operating Characteristics tables. For loads exceeding 100 pF, TI recommends isolating the capacitor with a small series resistor (e.g., 10–50 Ω) placed close to the output pin to preserve stability - a standard practice validated in TI's application note SLOA060.

TLC2274AMDREP Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: LinCMOS™

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 4

Output Type:: Rail-to-Rail

Slew Rate:: 3.6V/µs

Gain Bandwidth Product:: 2.25 MHz

-3db Bandwidth:: -

Current - Input Bias:: 1 pA

Voltage - Input Offset:: 300 µV

Current - Supply:: 4.8mA (x4 Channels)

Current - Output / Channel:: 50 mA

Voltage - Supply Span (Min):: 4.4 V

Voltage - Supply Span (Max):: 16 V

Operating Temperature:: -55°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SOIC

TLC2274AMDREP FAQ

1.How can I place an order for TLC2274AMDREP through Aetrix?

Please submit a Request for Quotation (RFQ) for TLC2274AMDREP 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 TLC2274AMDREP reliable?

The price and inventory of TLC2274AMDREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2274AMDREP is usually 5 days.

3.What payment methods are accepted for TLC2274AMDREP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2274AMDREP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLC2274AMDREP?

TLC2274AMDREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLC2274AMDREP 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 TLC2274AMDREP?

For technical support, including TLC2274AMDREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2274AMDREP requirements.

6.How does Aetrix verify that TLC2274AMDREP is sourced from the original manufacturer or authorized distributors?

All TLC2274AMDREP 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 TLC2274AMDREP meets industry standards.

7.What is the process for return or replacement of TLC2274AMDREP?

All TLC2274AMDREP units undergo pre-shipment inspection (PSI). If there is an issue with TLC2274AMDREP, 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 TLC2274AMDREP part is unused and in its original packaging.

Return procedure for TLC2274AMDREP:

1.Submit a request within 90 days.

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

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