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Texas Instruments TLC2274ACD
- Part No.:
- TLC2274ACD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2274ACD.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,621
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Product details
Overview
TLC2274ACD from Texas Instruments is a quad rail-to-rail output operational amplifier optimized for precision, low-noise signal conditioning in single- or split-supply systems. It delivers 2.2-MHz gain-bandwidth, 3.6-V/µs slew rate, 9 nV/√Hz input voltage noise at 1 kHz, 1-pA typical input bias current, and ±5-V operation with rail-to-rail output swing - enabling high-fidelity interfacing with 12-bit ADCs in battery-powered sensor front-ends.
For engineers reviewing the TLC2274ACD datasheet, TLC2274ACD pinout, TLC2274ACD application, or TLC2274ACD equivalent, key selection criteria include its rail-to-rail output capability under ±5-V supply, sub-1-mV max input offset voltage (TLC2274A grade), ultra-low input bias current for high-impedance transducer interfaces, and guaranteed performance across –40°C to 125°C industrial temperature range.
Technical Context
The TLC2274ACD uses advanced LinCMOS process technology to achieve rail-to-rail output swing while maintaining low input bias current (1 pA typ) and low noise (9 nV/√Hz). Its input stage operates with common-mode voltage extending to the negative rail, supporting ground-referenced inputs in single-supply configurations.
It features unity-gain stable compensation, 50° phase margin, and 10 dB gain margin with 10-kΩ load and 100-pF capacitive load - ensuring robust stability in precision closed-loop configurations without external compensation. The device draws 4.8 mA typical supply current per amplifier at ±5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 2.25 MHz - supports stable closed-loop gain up to ~22 at 100 kHz for anti-aliasing filter or sensor amplification stages. |
| Slew rate | 3.6 V/µs - enables faithful reproduction of 500-kHz full-scale sine waves at 2-Vpp without slew-induced distortion. |
| Input offset voltage (max) | 950 µV - ensures ≤0.024% error in unity-gain buffer applications with 4-V input span at room temperature. |
| Input bias current (typ) | 1 pA - minimizes voltage error across >1-GΩ source impedances, critical for piezoelectric or pH electrode interfaces. |
| Input voltage noise density | 9 nV/√Hz at 1 kHz - contributes <1.8 µVrms integrated noise over 20 Hz–20 kHz audio band with 1-kΩ source impedance. |
| Common-mode input range | Includes negative rail (VDD−) - allows direct sensing of 0-V referenced signals in single-supply systems without level-shifting circuitry. |
| Supply voltage range | ±2.2 V to ±8 V - supports operation from low-voltage battery rails (e.g., ±3 V Li-ion) up to industrial ±5 V or ±8 V supplies. |
Pinout & Package
The TLC2274ACD is housed in a 14-pin SOIC (Small Outline Integrated Circuit) package with nominal body size 3.91 mm × 8.65 mm, compliant with JEDEC MS-012 standard. Thermal resistance RθJA is 83.8°C/W, suitable for moderate-power analog signal chains on standard FR-4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Output of Channel 1 - rail-to-rail swing supports full dynamic range into high-impedance loads or ADC reference buffers. |
| 2 | IN1− | Inverting input of Channel 1 - matched to IN1+ for precision differential gain; accepts common-mode down to VDD−. |
| 3 | IN1+ | Non-inverting input of Channel 1 - ultra-high impedance (1012 Ω) preserves signal integrity from high-Z sources. |
| 4 | VDD+ | Positive supply terminal - connects to highest potential rail; decoupling capacitor required within 1 cm for stability. |
| 5 | IN2+ | Non-inverting input of Channel 2 - electrically isolated from Channel 1; shares same CMRR and offset specs. |
| 6 | IN2− | Inverting input of Channel 2 - supports independent feedback networks per channel without crosstalk degradation. |
| 7 | OUT2 | Output of Channel 2 - identical AC/DC specs to OUT1; enables dual-channel instrumentation or active filtering. |
| 8 | NC | No connection - internal die pad not bonded; must remain unconnected and unpopulated on PCB. |
| 9 | IN3+ | Non-inverting input of Channel 3 - enables three independent gain stages or multi-path signal processing in one IC. |
| 10 | IN3− | Inverting input of Channel 3 - maintains same input bias current and offset matching as other channels. |
| 11 | VDD− | Negative supply terminal - referenced to lowest system potential; required for split-supply operation or ground-referenced single-supply use. |
| 12 | IN4+ | Non-inverting input of Channel 4 - completes quad configuration; supports simultaneous conditioning of four sensor outputs. |
| 13 | IN4− | Inverting input of Channel 4 - fully specified for rail-to-rail input common-mode range including VDD−. |
| 14 | OUT4 | Output of Channel 4 - delivers same rail-to-rail output drive capability as other channels, up to ±5 mA. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full supply voltage range output (e.g., –4.99 V to +4.99 V at ±5 V) - eliminates headroom loss when driving SAR or delta-sigma ADCs. |
| Low input bias current (1 pA typ) | Enables accurate amplification of signals from >1-GΩ impedance sources like piezoelectric accelerometers or electrochemical sensors. |
| Low input voltage noise (9 nV/√Hz) | Reduces total integrated noise in precision DC-coupled paths - critical for 16-bit+ measurement resolution in data acquisition systems. |
| Specified for single- and split-supply operation | Operates from +5 V only (with VDD− = GND) or ±5 V - simplifies power architecture across portable and industrial platforms. |
| High CMRR (75 dB min) | Rejects common-mode interference in noisy environments - maintains accuracy in motor control feedback or industrial I/O modules. |
Applications
| Transducer Interface | Battery-Powered Monitoring |
|---|---|
Use Scenario: Amplifying low-level mV-range signals from strain gauges or thermopiles in HVAC control panels. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with rail-to-rail output driving 12-bit ADC reference input. Use Value: 1-pA input bias current prevents loading of high-resistance Wheatstone bridge elements; 950-µV max VIO limits zero-error to <0.05% of full scale. | Use Scenario: Signal conditioning in handheld gas detectors powered by two AA cells (3 V). IC Role / Device Role / Timing Role: Quad op-amp providing simultaneous biasing, amplification, filtering, and level-shifting for electrochemical sensor array. Use Value: Rail-to-rail output maximizes usable ADC input range from 3-V supply; 4.8-mA total quiescent current extends battery life beyond 12 months. |
| White Goods Control | Analog Front-End for Data Acquisition |
Use Scenario: Motor current sensing and temperature monitoring in smart refrigerator compressor modules. IC Role / Device Role / Timing Role: Dual-channel current sense amplifier and thermistor interface with shared supply and layout simplicity. Use Value: Common-mode input range including VDD− allows direct ground-referenced shunt measurements; 75-dB CMRR rejects PWM switching noise. | Use Scenario: Multi-channel sensor hub in industrial PLC analog input module. IC Role / Device Role / Timing Role: Four independent programmable-gain stages feeding multiplexed 16-bit sigma-delta ADC. Use Value: Matched channel specs (gain-bandwidth, offset, noise) ensure consistent channel-to-channel performance; SOIC-14 footprint enables dense layout. |
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 |
|---|---|---|---|
| TLV2444CDR | Lower supply current (1.3 mA/ch), lower slew rate (0.6 V/µs), wider input common-mode range (to VDD+), but higher input offset (2.5 mV max). | Better suited for ultra-low-power, low-frequency (<10 kHz) sensor buffering where speed is secondary to battery life. | Select TLV2444CDR when quiescent current is critical and bandwidth requirements are ≤100 kHz. |
| OPA4340UA | Higher precision (125 µV max VIO), lower noise (8 nV/√Hz), but higher cost and limited −40°C to 85°C temp range (vs. TLC2274ACD's −40°C to 125°C). | Ideal for high-accuracy medical instrumentation or test equipment where offset drift and long-term stability dominate. | Choose OPA4340UA for metrology-grade DC accuracy; retain TLC2274ACD for industrial temperature range and cost-sensitive designs. |
Compared with TLV2444CDR and OPA4340UA, the TLC2274ACD provides the optimal balance of rail-to-rail output, 125°C operation, low input bias current, and cost-effectiveness for industrial sensor signal chains - making it the preferred choice where wide temperature range and high-Z source compatibility are mandatory.
Availability
TLC2274ACD is available at Aetrix Electronics and suitable for white goods control, battery-powered monitoring systems, and industrial analog front-ends requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TLC2274ACD 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, embedded processing, and digital signal technologies - with over 50 years of innovation in precision amplifiers and power management solutions.
The TLC227x family was designed specifically for rail-to-rail output precision amplification in industrial, automotive, and consumer systems - delivering low noise, low input bias current, and robust operation across wide supply and temperature ranges.
FAQ
What is the maximum operating temperature range for the TLC2274ACD?
The TLC2274ACD is rated for operation from –40°C to +125°C, meeting industrial-grade thermal requirements. This specification applies to all variants in the TLC2274A series with 'I' or 'Q' temperature grading, and is validated per TI's recommended operating conditions in the SLOS190H datasheet. The TLC2274ACD maintains full electrical performance across this range without derating.
Does the TLC2274ACD support true rail-to-rail input operation?
No - the TLC2274ACD features rail-to-rail *output* swing but its input common-mode voltage range extends only to the negative rail (VDD−) and up to VDD+ − 1.5 V. For example, at ±5 V supply, VICR is –5.3 V to +3.5 V. True rail-to-rail input capability is not provided; designers must ensure input signals remain within this validated range to avoid phase reversal or increased distortion.
Can the TLC2274ACD drive a 10-kΩ load while maintaining rail-to-rail output?
Yes - the TLC2274ACD guarantees rail-to-rail output swing into 10-kΩ loads at ±5 V supply. Per datasheet Section 6.8, VOM+ = +4.85 V and VOM− = –4.85 V at IO = ±200 µA, and output remains within 150 mV of each rail even at ±1 mA load. This makes it suitable for driving ADC reference inputs, active filters, and medium-impedance transducers without external buffers.
How does the TLC2274ACD differ from the standard TLC2274CD?
The 'A' suffix in TLC2274ACD denotes tighter input offset voltage specification: 950 µV maximum at 25°C versus 2500 µV for the base TLC2274CD. All other electrical parameters - gain-bandwidth, slew rate, noise, supply current, and temperature range - are identical. The 'A' grade is selected when DC accuracy is critical, such as in precision sensor calibration or low-gain instrumentation amplifier stages.
Is the TLC2274ACD pin-compatible with other quad op-amps in SOIC-14 packages?
The TLC2274ACD follows the industry-standard SOIC-14 pinout for quad op-amps (pin 1 = OUT1, pin 2 = IN1−, etc.), matching devices like LM324, TLV2464, and OPA4340. However, functional compatibility requires verification of supply range, input/output voltage ranges, and stability conditions - especially since TLC2274ACD requires dual supply or referenced ground for VDD−, unlike single-supply-only parts.
TLC2274ACD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLC2274ACD FAQ
1.How can I place an order for TLC2274ACD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2274ACD 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 TLC2274ACD reliable?
The price and inventory of TLC2274ACD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2274ACD is usually 5 days.
3.What payment methods are accepted for TLC2274ACD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2274ACD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2274ACD?
TLC2274ACD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2274ACD 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 TLC2274ACD?
For technical support, including TLC2274ACD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2274ACD requirements.
6.How does Aetrix verify that TLC2274ACD is sourced from the original manufacturer or authorized distributors?
All TLC2274ACD 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 TLC2274ACD meets industry standards.
7.What is the process for return or replacement of TLC2274ACD?
All TLC2274ACD units undergo pre-shipment inspection (PSI). If there is an issue with TLC2274ACD, 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 TLC2274ACD part is unused and in its original packaging.
Return procedure for TLC2274ACD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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