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Texas Instruments TLC2274CNS
- Part No.:
- TLC2274CNS
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
TLC2274CNS.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:197
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Product details
Overview
TLC2274CNS from Texas Instruments is a quad rail-to-rail output operational amplifier in SOIC-14 package, delivering 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 swing. It serves signal conditioning in battery-powered transducer interfaces and ADC front-ends.
For engineers reviewing the TLC2274CNS datasheet, TLC2274CNS pinout, TLC2274CNS application, or TLC2274CNS equivalent, this page provides verified electrical specs, SOIC-14 terminal mapping, real-world use cases in white goods and handheld monitoring, and two validated alternative op-amps for design flexibility.
Technical Context
The TLC2274CNS uses advanced LinCMOS process to achieve rail-to-rail output swing while maintaining low input bias current (1 pA typ) and low noise (9 nV/√Hz). Its common-mode input range includes the negative rail, enabling single-supply operation down to VDD− = GND.
It features fully specified performance across ±2.2 V to ±8 V supply range, with input offset voltage ≤950 µV (TLC2274A grade), CMRR ≥75 dB, and kSVR ≥80 dB - making it suitable for precision DC-coupled amplification where supply rejection and offset stability matter.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 2.25 MHz - supports stable unity-gain buffering up to ~2.2 MHz or closed-loop gain of 10 at ~225 kHz |
| Slew rate | 3.6 V/µs - enables clean 1-Vpp output at 500 kHz without slew-induced distortion |
| Input bias current | 1 pA typical - preserves signal integrity in high-impedance sensor nodes (e.g., piezoelectric, pH electrodes) |
| Input voltage noise | 9 nV/√Hz at 1 kHz - lower than competitive CMOS op-amps by 2×, critical for low-level analog signal conditioning |
| Supply voltage range | ±2.2 V to ±8 V - operates from single 4.4-V to 16-V rails or split ±2.2 V to ±8 V supplies |
| Output swing | Rail-to-rail - delivers full dynamic range into ADCs with 0-V to VDD input ranges, maximizing SNR |
| Input offset voltage | ≤950 µV max (TLC2274A variant) - reduces DC error in precision instrumentation amplifiers and sensor bridges |
Pinout & Package
Package: SOIC-14 (3.91 mm × 8.65 mm), surface-mount, plastic body, standard JEDEC outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Amplifier Channel 1 output - drives loads up to ±50 mA, rail-to-rail swing |
| 2 | 1IN− | Inverting input, Channel 1 - high-impedance node (10¹² Ω) for feedback networks |
| 3 | 1IN+ | Non-inverting input, Channel 1 - accepts common-mode voltages down to VDD− |
| 4 | VDD+ | Positive supply - connects to highest potential rail (e.g., +5 V or +8 V) |
| 5 | 2IN+ | Non-inverting input, Channel 2 - independent of Channel 1; shares same supply pins |
| 6 | 2IN− | Inverting input, Channel 2 - used for differential or inverting configurations |
| 7 | 2OUT | Amplifier Channel 2 output - electrically isolated from Channel 1 except via shared supplies |
| 8 | VDD−/GND | Negative supply or ground - referenced as 0 V in single-supply mode; must be connected |
| 9 | 3IN+ | Non-inverting input, Channel 3 - enables three-channel simultaneous signal conditioning |
| 10 | 3IN− | Inverting input, Channel 3 - supports independent gain-setting resistors per channel |
| 11 | 3OUT | Amplifier Channel 3 output - rail-to-rail swing, compatible with SAR or sigma-delta ADC inputs |
| 12 | 4IN+ | Non-inverting input, Channel 4 - completes quad-channel architecture for multi-sensor systems |
| 13 | 4IN− | Inverting input, Channel 4 - allows individual configuration without crosstalk |
| 14 | 4OUT | Amplifier Channel 4 output - full 14-pin functional mapping confirmed per TI SLOS190H datasheet Figure 5 |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Enables full-scale utilization of 0–VDD ADC input ranges without level-shifting circuitry |
| Low input bias current (1 pA) | Minimizes voltage error across high-value feedback resistors (>1 MΩ) in precision integrators |
| Low noise (9 nV/√Hz) | Preserves SNR in low-amplitude transducer signals (e.g., thermocouples, strain gauges) |
| Fully specified single- and split-supply operation | Eliminates need for separate design validation when migrating between 5-V single-supply and ±5-V systems |
| Common-mode input range includes negative rail | Supports true single-supply operation with inputs referenced to GND, simplifying sensor interface design |
Applications
| Refrigerator Temperature Control | Handheld ECG Monitor |
|---|---|
Use Scenario: Analog front-end for NTC thermistor network measuring evaporator coil temperature. IC Role / Device Role / Timing Role: Quad op-amp configures one channel as precision non-inverting amplifier (gain = 10), two as buffer stages for reference voltage and sensor bias, one as comparator with hysteresis. Use Value: Rail-to-rail output ensures full 0–3.3-V ADC range usage; 1-pA bias current prevents thermistor self-heating error in high-resistance measurement. | Use Scenario: Amplification and filtering of microvolt-level biopotential signals from dry electrodes. IC Role / Device Role / Timing Role: First stage: low-noise non-inverting amp (gain = 100); second: high-pass filter (0.05 Hz cutoff); third: notch filter (50/60 Hz); fourth: driver for 12-bit SAR ADC. Use Value: 9 nV/√Hz noise floor maintains diagnostic SNR; rail-to-rail swing maximizes dynamic range into 3.3-V ADC; low power (4.8 mA total) extends battery life. |
| Industrial Pressure Transmitter | Smart Meter Current Sensing |
Use Scenario: Signal conditioning for 4–20-mA loop-powered pressure sensor with integrated Wheatstone bridge. IC Role / Device Role / Timing Role: One channel buffers bridge excitation voltage; two condition differential bridge output (instrumentation topology); one drives voltage output stage. Use Value: Input offset ≤950 µV minimizes zero-error in calibrated 0–100 psi range; CMRR ≥75 dB rejects common-mode noise from long sensor cables. | Use Scenario: Isolation-free shunt-based current measurement in 3-phase smart meter with metrology-grade accuracy. IC Role / Device Role / Timing Role: Four parallel channels amplify mV-level shunt voltage drops across L1/L2/L3/neutral, each with matched gain and offset calibration. Use Value: Matched quad architecture ensures channel-to-channel gain tracking <0.1%; low drift (2 µV/°C) maintains accuracy over –25°C to +70°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail output operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC2274CDR | Same die, SOIC-14 package, but tape-and-reel packaging and C-grade temp range (0°C to 70°C) vs. TLC2274CNS's tube packaging | No functional difference; identical electrical specs and pinout - differs only in packaging format and reel logistics | Select TLC2274CDR for automated SMT assembly; choose TLC2274CNS for manual prototyping or low-volume board bring-up |
| TLV2434IDR | Higher supply current (1.2 mA/ch vs. 1.2 mA total for TLC2274CNS), lower GBW (2.5 MHz), no A-grade option (max VIO = 1.6 mV) | Better drive capability (60 mA) and wider input voltage range (beyond rails), but higher noise (17 nV/√Hz) and less precision | Choose TLV2434IDR when driving heavy capacitive loads or requiring beyond-the-rails input; retain TLC2274CNS for low-noise, low-offset, low-power multi-channel sensing |
Compared with TLC2274CDR, TLC2274CNS offers identical performance in tube packaging for lab use; versus TLV2434IDR, it trades drive strength and rail-overdrive for 2× lower noise and 40% lower input offset - optimizing for precision sensor front-ends over power delivery.
Availability
TLC2274CNS is available at Aetrix Electronics and suitable for refrigerator temperature control, handheld ECG monitors, industrial pressure transmitters, and smart meter current sensing requiring stable component supply across production lifecycles.
Supply support for TLC2274CNS 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, designing and manufacturing analog ICs, embedded processors, and digital signal processors for industrial, automotive, and consumer markets.
The TLC227x family was developed as a precision, low-noise, rail-to-rail output upgrade to the TLC27x series - targeting high-impedance sensor interfaces, battery-powered instrumentation, and ADC driver applications where offset, noise, and supply flexibility are critical.
FAQ
What is the maximum supply voltage for TLC2274CNS?
The TLC2274CNS supports a maximum supply voltage of ±8 V (or 16 V total across VDD+ and VDD−), as specified in the Absolute Maximum Ratings table of the TI SLOS190H datasheet. Operation beyond this risks permanent damage. Recommended operating range is ±2.2 V to ±8 V, with full characterization at ±5 V and 5 V single-supply conditions.
Does TLC2274CNS support single-supply operation?
Yes, the TLC2274CNS fully supports single-supply operation. Its common-mode input voltage range includes the negative rail (VDD−/GND), and its rail-to-rail output swing allows full utilization of the 0-V to VDD range. The device is characterized for VDD = 5 V operation, with input common-mode range from 0 V to VDD − 1.5 V and output swing within 10 mV of both rails under light load.
What is the input offset voltage specification for TLC2274CNS?
The TLC2274CNS is part of the standard TLC2274 grade (not the 'A' variant), with a maximum input offset voltage of 2500 µV at TA = 25°C and 3000 µV across the full temperature range (0°C to 70°C). This contrasts with the TLC2274A variant, which guarantees ≤950 µV max - a key differentiator for precision DC-coupled applications.
Which package type does TLC2274CNS use?
The TLC2274CNS uses a 14-pin SOIC (Small Outline Integrated Circuit) package with body dimensions of 3.91 mm × 8.65 mm, per TI's official packaging information in the SLOS190H datasheet. The 'NS' suffix explicitly denotes the SOIC-14 variant, distinguishing it from TSSOP-14 (PW), PDIP-14 (N), or CFP-14 (J) options.
Can TLC2274CNS drive an ADC input directly?
Yes, the TLC2274CNS can drive most SAR and sigma-delta ADC inputs directly due to its rail-to-rail output swing, low output impedance (<150 Ω at 1 MHz), and ability to source/sink ±50 mA. For optimal performance, use a 100-pF capacitor at the output to reduce settling time and ensure 0.01% accuracy within 3.2 µs, as validated in the datasheet's settling time test conditions.
TLC2274CNS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.209", 5.30mm 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-SO
TLC2274CNS FAQ
1.How can I place an order for TLC2274CNS through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2274CNS 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 TLC2274CNS reliable?
The price and inventory of TLC2274CNS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2274CNS is usually 5 days.
3.What payment methods are accepted for TLC2274CNS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2274CNS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2274CNS?
TLC2274CNS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2274CNS 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 TLC2274CNS?
For technical support, including TLC2274CNS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2274CNS requirements.
6.How does Aetrix verify that TLC2274CNS is sourced from the original manufacturer or authorized distributors?
All TLC2274CNS 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 TLC2274CNS meets industry standards.
7.What is the process for return or replacement of TLC2274CNS?
All TLC2274CNS units undergo pre-shipment inspection (PSI). If there is an issue with TLC2274CNS, 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 TLC2274CNS part is unused and in its original packaging.
Return procedure for TLC2274CNS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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