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

Texas Instruments TLC2274AQD

Name: TLC2274AQD
Brand: Texas Instruments
SKU: TLC2274AQD
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLC2274AQD

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: TLC2274AQD.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14SOIC

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Product details

Overview

TLC2274AQD from Texas Instruments is a quad rail-to-rail output operational amplifier designed for precision signal conditioning in low-voltage, low-power systems. It delivers 2.2-MHz gain-bandwidth, 3.6-V/µs slew rate, 9 nV/√Hz input voltage noise at 1 kHz, ±5 V supply operation, and rail-to-rail output swing - enabling direct interfacing with 12-bit ADCs in battery-powered sensor front-ends.

For engineers reviewing the TLC2274AQD datasheet, TLC2274AQD pinout, TLC2274AQD application, or TLC2274AQD equivalent, key selection criteria include input bias current (1 pA typ), input offset voltage (≤950 µV max), common-mode input range extending to VDD−, single- or split-supply flexibility, and Q-temp automotive qualification (–40°C to 125°C).

Technical Context

The TLC2274AQD uses advanced LinCMOS process technology to achieve rail-to-rail output swing while maintaining low input bias current (1 pA typ) and low input offset voltage (≤950 µV). Its fully differential input stage supports common-mode voltages down to the negative rail, and its unity-gain-stable architecture enables use in active filters, transducer amplifiers, and precision reference buffers without external compensation.

It operates across ±2.2 V to ±8 V supply ranges, draws 4.8 mA typical supply current per amplifier at ±5 V, and features 75 dB minimum CMRR and 80 dB minimum PSRR - making it suitable for high-impedance source amplification in noisy industrial environments where DC accuracy and AC fidelity must coexist.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	±2.2 V to ±8 V - supports dual-supply operation in legacy analog systems and single-supply configurations down to 4.4 V total.
Gain-Bandwidth Product	2.25 MHz - enables stable closed-loop gain ≥10 up to ~225 kHz, suitable for anti-aliasing and sensor signal bandwidths.
Slew Rate	3.6 V/µs - ensures ≤1.5 µs settling to 0.1% for 4.6-V step, critical for fast transient response in data acquisition.
Input Offset Voltage	≤950 µV max (TLC2274A grade) - reduces DC error in precision gain stages and bridge amplifier applications.
Input Bias Current	1 pA typical - preserves signal integrity when amplifying high-impedance sources like piezoelectric sensors or pH electrodes.
Output Swing	Rail-to-rail - delivers full dynamic range into ADCs without level-shifting circuitry, maximizing SNR in 12-bit+ systems.
Input Voltage Noise	9 nV/√Hz at 1 kHz - two times lower than TLC27x predecessors, improving resolution in low-level signal chains.

Pinout & Package

TLC2274AQD is supplied in a 14-pin SOIC (D package) with nominal body size 3.91 mm × 8.65 mm. Pin functions are defined per TI SLOS190H datasheet Rev. March 2016.

Pin/Terminal	Circuit Role	Design Meaning
1	OUT1	Amplifier 1 output - drives loads up to ±50 mA; rail-to-rail swing enables direct connection to SAR ADC reference inputs.
2	IN1−	Inverting input, Channel 1 - high-impedance node (10¹² Ω) requiring guarded layout for <1 pA leakage paths.
3	IN1+	Non-inverting input, Channel 1 - accepts common-mode voltages from VDD− to (VDD+ −1.5 V), supporting ground-referenced sensors.
4	VDD+	Positive supply - must be decoupled with 0.1 µF ceramic capacitor placed within 5 mm of pin for stability.
5	IN2+	Non-inverting input, Channel 2 - electrically identical to IN1+; allows independent dual-channel configuration without crosstalk.
6	IN2−	Inverting input, Channel 2 - matched to IN1− for common-mode rejection in differential input stages.
7	OUT2	Amplifier 2 output - shares same electrical specs as OUT1; usable as buffer for reference voltage distribution.
8	NC	No connection - internal die pad; must remain unconnected and unbonded per TI mechanical drawing.
9	IN3−	Inverting input, Channel 3 - enables three-channel instrumentation topologies without external op-amp count increase.
10	IN3+	Non-inverting input, Channel 3 - supports simultaneous multi-sensor conditioning on single IC footprint.
11	VDD−	Negative supply - referenced to system ground in single-supply mode; requires low-ESR bulk capacitance for transient load handling.
12	IN4+	Non-inverting input, Channel 4 - provides fourth independent channel for auxiliary functions like power supply monitoring.
13	IN4−	Inverting input, Channel 4 - matches input characteristics of other channels for consistent DC and AC performance.
14	OUT4	Amplifier 4 output - capable of driving 10-kΩ loads with <0.15 V drop at 500 µA, suitable for LED bias control.

Key Features

Feature	Design Value
Rail-to-rail output swing	Delivers full-scale output from VDD− to VDD+ under 1-mA load, eliminating need for level-shifting in 3.3-V or 5-V ADC interfaces.
Low input bias current (1 pA)	Minimizes voltage error across high-value feedback networks (>1 MΩ), preserving gain accuracy in photodiode transimpedance amps.
Low input voltage noise (9 nV/√Hz)	Enables detection of sub-mV signals from thermocouples or strain gauges without compromising SNR in 10–100 kHz bandwidths.
Q-temp automotive qualification	Rated for –40°C to +125°C operation with full parametric validation, meeting AEC-Q100 stress test requirements for engine control modules.
Fully specified for single- and split-supply	Operates identically with 5-V single supply (VDD+ = 5 V, VDD− = GND) or ±5-V dual supply, simplifying design reuse across platforms.

Applications

White Goods Sensor Interface	Hand-held Battery Monitoring
Use Scenario: Amplifying low-level signals from temperature, humidity, and door-position sensors in refrigerators and washing machines. IC Role / Device Role / Timing Role: Quad op-amp configured as four independent transducer interface stages - two for RTD bridges, one for capacitive humidity sensing, one for comparator hysteresis. Use Value: Rail-to-rail output ensures full utilization of 12-bit ADC range; 1-pA input bias prevents drift in high-Z RC filter networks used for EMI suppression.	Use Scenario: Real-time monitoring of Li-ion cell voltage, current, and temperature in portable medical devices and handheld test equipment. IC Role / Device Role / Timing Role: Precision gain stage for shunt-based current sensing and buffer for thermistor voltage dividers feeding microcontroller ADCs. Use Value: 950-µV max input offset minimizes calibration burden; 4.8-mA total quiescent current (all four amps) extends battery life in always-on monitoring modes.
Transducer Signal Conditioning	ADC Driver for Industrial PLCs
Use Scenario: Amplifying outputs from piezoelectric accelerometers, pressure transducers, and pH electrodes in factory automation systems. IC Role / Device Role / Timing Role: First-stage signal conditioner with selectable gain (1–100×) and low-pass filtering before digitization. Use Value: 10¹²-Ω input resistance preserves signal integrity from high-impedance sources; 75-dB CMRR rejects common-mode noise from motor drives and switching power supplies.	Use Scenario: Driving successive-approximation register (SAR) ADC inputs in programmable logic controllers with ±10-V analog I/O modules. IC Role / Device Role / Timing Role: Output buffer and level translator between isolated analog front-end and ADC sampling switch. Use Value: Rail-to-rail swing guarantees 0–5 V or ±2.5 V full-scale compliance; 3.6-V/µs slew rate supports 1-MSPS sampling without settling error.

White Goods Sensor Interface

Hand-held Battery Monitoring

Use Scenario: Amplifying low-level signals from temperature, humidity, and door-position sensors in refrigerators and washing machines.

IC Role / Device Role / Timing Role: Quad op-amp configured as four independent transducer interface stages - two for RTD bridges, one for capacitive humidity sensing, one for comparator hysteresis.

Use Value: Rail-to-rail output ensures full utilization of 12-bit ADC range; 1-pA input bias prevents drift in high-Z RC filter networks used for EMI suppression.

Use Scenario: Real-time monitoring of Li-ion cell voltage, current, and temperature in portable medical devices and handheld test equipment.

IC Role / Device Role / Timing Role: Precision gain stage for shunt-based current sensing and buffer for thermistor voltage dividers feeding microcontroller ADCs.

Use Value: 950-µV max input offset minimizes calibration burden; 4.8-mA total quiescent current (all four amps) extends battery life in always-on monitoring modes.

Transducer Signal Conditioning

ADC Driver for Industrial PLCs

Use Scenario: Amplifying outputs from piezoelectric accelerometers, pressure transducers, and pH electrodes in factory automation systems.

IC Role / Device Role / Timing Role: First-stage signal conditioner with selectable gain (1–100×) and low-pass filtering before digitization.

Use Value: 10¹²-Ω input resistance preserves signal integrity from high-impedance sources; 75-dB CMRR rejects common-mode noise from motor drives and switching power supplies.

Use Scenario: Driving successive-approximation register (SAR) ADC inputs in programmable logic controllers with ±10-V analog I/O modules.

IC Role / Device Role / Timing Role: Output buffer and level translator between isolated analog front-end and ADC sampling switch.

Use Value: Rail-to-rail swing guarantees 0–5 V or ±2.5 V full-scale compliance; 3.6-V/µs slew rate supports 1-MSPS sampling without settling error.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad rail-to-rail operational amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLC2274CDR	Commercial-grade (0°C to 70°C), same pinout and electrical specs except wider input offset (2500 µV max) and no AEC-Q100 qualification.	Not qualified for automotive or extended-temperature industrial use; suitable for cost-sensitive consumer electronics.	Select TLC2274CDR only if ambient operating temperature stays within 0°C–70°C and AEC-Q100 compliance is not required.
TLV2444IDR	Lower supply current (1.3 mA/amplifier), higher GBW (1.8 MHz), but higher input offset (2 mV max) and no Q-temp rating.	Better suited for ultra-low-power portable designs where offset drift matters less than battery runtime.	Choose TLV2444IDR when quiescent current is primary constraint and temperature range is limited to –40°C to 85°C.

Compared with TLC2274CDR and TLV2444IDR, the TLC2274AQD uniquely combines automotive temperature range, low 950-µV offset, and rail-to-rail output in a single SOIC-14 package - making it the only option qualified for safety-critical engine control and transmission monitoring circuits.

Availability

TLC2274AQD is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor signal conditioning, and battery-powered medical diagnostics requiring stable component supply over extended product lifecycles.

Supply support for TLC2274AQD 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TLC227x family was engineered to replace legacy TLC27x op-amps with improved noise, offset, and rail-to-rail output capability - specifically targeting high-precision, low-power analog signal chains in harsh-temperature environments.

FAQ

What is the maximum operating temperature range for the TLC2274AQD?

The TLC2274AQD is rated for operation from –40°C to +125°C and is qualified to AEC-Q100 Grade 2 standards. This specification is validated across all electrical parameters in the datasheet under recommended operating conditions, including supply voltage ±2.2 V to ±8 V and input common-mode range extending to VDD−. The device undergoes temperature cycling, high-temperature operating life, and unbiased HAST testing per TI's Q-temp automotive program.

Does the TLC2274AQD support single-supply operation?

Yes, the TLC2274AQD supports true single-supply operation with VDD+ tied to positive rail (e.g., 5 V) and VDD− tied to ground. Its common-mode input range includes the negative rail (GND), and output swings rail-to-rail - enabling direct interfacing with microcontroller ADCs without level-shifting circuitry. Input voltage range is specified from VDD− to (VDD+ −1.5 V), and output can drive loads down to 0.09 V above GND at 500 µA.

What is the input offset voltage specification for the TLC2274AQD?

The TLC2274AQD has a maximum input offset voltage of 950 µV at TA = 25°C and across full temperature range (–40°C to +125°C), as confirmed in Section 6.8 of the SLOS190H datasheet. This applies specifically to the "A" grade variant (TLC2274A), which the "Q" suffix denotes. Typical offset is 300 µV, and long-term drift is 0.002 µV/month - critical for stable DC-coupled gain stages in automotive cabin temperature sensors.

Can the TLC2274AQD drive capacitive loads directly?

The TLC2274AQD is unity-gain stable with capacitive loads up to 100 pF when using 10-kΩ series isolation resistor, as verified in typical characteristics (Figure 23, SLOS190H). For larger loads (e.g., >500 pF), external compensation or a series resistor is required to maintain phase margin >50°. The closed-loop output impedance is 130 Ω at 1 MHz, indicating moderate drive strength - sufficient for ADC input capacitance but not for long PCB traces without buffering.

Is the TLC2274AQD pin-compatible with other TLC2274 variants?

Yes, the TLC2274AQD shares identical pinout and footprint with all TLC2274 family members in SOIC-14 (D) package, including TLC2274CDR, TLC2274IDR, and TLC2274MJD. All variants use the same 14-pin configuration: OUT1, IN1−, IN1+, VDD+, IN2+, IN2−, OUT2, NC, IN3−, IN3+, VDD−, IN4+, IN4−, OUT4. No PCB redesign is needed when upgrading from commercial or industrial grades to the Q-temp qualified TLC2274AQD.

TLC2274AQD Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

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

Packaging:: Bulk

Product Status:: Obsolete

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:: -40°C ~ 125°C (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SOIC

TLC2274AQD FAQ

1.How can I place an order for TLC2274AQD through Aetrix?

Please submit a Request for Quotation (RFQ) for TLC2274AQD 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 TLC2274AQD reliable?

The price and inventory of TLC2274AQD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2274AQD is usually 5 days.

3.What payment methods are accepted for TLC2274AQD?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2274AQD transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLC2274AQD?

TLC2274AQD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLC2274AQD 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 TLC2274AQD?

For technical support, including TLC2274AQD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2274AQD requirements.

6.How does Aetrix verify that TLC2274AQD is sourced from the original manufacturer or authorized distributors?

All TLC2274AQD 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 TLC2274AQD meets industry standards.

7.What is the process for return or replacement of TLC2274AQD?

All TLC2274AQD units undergo pre-shipment inspection (PSI). If there is an issue with TLC2274AQD, 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 TLC2274AQD part is unused and in its original packaging.

Return procedure for TLC2274AQD:

1.Submit a request within 90 days.

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

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