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Texas Instruments TLC274ACN
- Part No.:
- TLC274ACN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC274ACN.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,008
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Product details
Overview
TLC274ACN from Texas Instruments is a precision quad operational amplifier optimized for single-supply operation, featuring 5 mV max input offset voltage (25°C), 10.8 nV/√Hz input voltage noise at 1 kHz, and rail-to-rail output swing down to the negative rail. It operates from 3 V to 16 V over 0°C to 70°C and delivers 4.5 MHz unity-gain bandwidth - enabling high-fidelity signal conditioning in battery-powered sensor interfaces and industrial analog front-ends.
For engineers reviewing the TLC274ACN datasheet, TLC274ACN pinout, TLC274ACN application, or TLC274ACN equivalent, key selection criteria include its low-input-bias-current CMOS architecture, wide common-mode input range extending below ground, and compatibility with TTL/HCMOS logic supply rails - critical for upgrading legacy designs while maintaining layout continuity.
Technical Context
The TLC274ACN employs a polysilicon-gate CMOS process to achieve >10¹² Ω input impedance and sub-60 pA typical input bias current at 25°C, enabling high-impedance source interfacing without significant error. Its input stage supports common-mode voltages from –0.1 V to VDD–1 V, and output drives within 50 mV of GND under load - making it suitable for true single-supply transducer amplification.
It integrates ESD protection circuitry and latch-up immunity per JEDEC JESD78, with specified operation across 0°C to 70°C ambient. The device exhibits 0.3 µV/°C input offset voltage drift (25°C to 70°C) and maintains ≥65 dB CMRR and PSRR across frequency - supporting stable DC-coupled gain stages in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input offset voltage | 5 mV max at 25°C - enables ≤0.5% gain error in 100× noninverting amplifier configurations with 10 kΩ feedback networks. |
| Input bias current | 60 pA max at 25°C - allows use of ≥10 MΩ sensor interface resistors without measurable voltage error. |
| Unity-gain bandwidth | 4.5 MHz - supports stable closed-loop operation up to 100 kHz with ≥60° phase margin into 10 kΩ//20 pF loads. |
| Slew rate | 0.5 V/µs at unity gain - limits full-power bandwidth to ~80 kHz for 10 Vpp output, sufficient for audio and slow-control loop applications. |
| Supply voltage range | 3 V to 16 V - directly interfaces with 3.3 V, 5 V, and 12 V system rails without level-shifting or regulation. |
| Common-mode input range | –0.1 V to VDD–1 V - accepts signals referenced to ground in single-supply systems, eliminating need for input biasing networks. |
| Output voltage swing | Within 50 mV of GND and within 50 mV of VDD - delivers full dynamic range across 99% of supply rail, maximizing ADC utilization. |
Pinout & Package
Package: PDIP-14 (N package), 19.3 mm × 9.4 mm body size with 2.54 mm lead pitch - compatible with through-hole prototyping and legacy industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output | Amplifier channel 1 output - capable of sourcing/sinking ±30 mA, rail-to-rail swing under 10 kΩ load. |
| 1IN–, 1IN+ | Input | Inverting and noninverting inputs for channel 1 - high-impedance CMOS nodes; guard ring recommended for leakage-sensitive designs. |
| VDD | Power supply | Positive supply rail - must be bypassed with ≥0.1 µF ceramic capacitor near pin to suppress high-frequency noise coupling. |
| GND | Power supply | Negative supply or system ground - serves as reference for all four channels; shared return path requires low-impedance layout. |
| 2IN+, 2IN–, 2OUT 3IN+, 3IN–, 3OUT 4IN+, 4IN–, 4OUT |
Input/Output | Channels 2–4 identical to channel 1 - independent operation allows multi-stage filtering, differential pair buffering, or parallel gain paths. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply optimization | Input common-mode range includes GND and output swings to GND - eliminates dual-rail power supplies and level-shifting components in sensor signal chains. |
| Low input voltage noise | 10.8 nV/√Hz at 1 kHz - outperforms bipolar op-amps above 50 kΩ source impedances, reducing Johnson-Nyquist noise contribution in precision measurement. |
| High input impedance | >10¹² Ω - prevents loading of high-Z sources like piezoelectric sensors, pH electrodes, or photodiode transimpedance feedback networks. |
| ESD protection | Integrated circuitry per JEDEC JS-001 - withstands ≥2 kV HBM, reducing need for external TVS diodes in board-level ESD protection schemes. |
| Latch-up immunity | Designed-in per JEDEC JESD78 - prevents destructive parasitic SCR activation during overvoltage or ESD events, ensuring robust field reliability. |
Applications
| Strain Gauge Signal Conditioning | Thermocouple Cold-Junction Compensation |
|---|---|
|
Use Scenario: Amplifying microvolt-level Wheatstone bridge outputs from metal foil strain gauges in load cells and pressure transducers. IC Role / Device Role / Timing Role: Instrumentation-grade DC-coupled amplifier with low offset drift and negligible bias current error on high-resistance bridge arms. Use Value: 5 mV max VIO and 0.3 µV/°C drift ensure ≤0.05% full-scale error over 0°C–70°C ambient - meeting Class C industrial accuracy requirements. |
Use Scenario: Buffering and cold-junction compensation for Type K thermocouples in HVAC controllers and industrial ovens. IC Role / Device Role / Timing Role: Precision voltage follower and summing node for RTD-based reference temperature sensing. Use Value: Rail-to-rail output and GND-referenced input enable direct interfacing with 0–100 mV thermocouple outputs and 10 kΩ NTC/RTD sensors without level shifters. |
| Portable Medical ECG Front-End | Programmable Logic Controller Analog Input Module |
|
Use Scenario: First-stage amplification of 0.5–5 mV biopotential signals in battery-powered ECG monitors with 3.3 V supply. IC Role / Device Role / Timing Role: Low-noise, low-power instrumentation amplifier core with CMOS input guarding against electrode polarization artifacts. Use Value: 10.8 nV/√Hz noise and 60 pA input bias current minimize baseline wander and motion artifact - supporting diagnostic-grade 0.05 Hz–150 Hz bandwidth. |
Use Scenario: Signal conditioning for 4–20 mA current loop receivers and ±10 V analog inputs in modular PLC backplanes. IC Role / Device Role / Timing Role: Quad-channel buffer, level shifter, and filter driver handling multiple isolated input channels simultaneously. Use Value: Four independent amplifiers in one PDIP-14 package reduce component count by 75% vs discrete solutions - lowering BOM cost and PCB area in space-constrained DIN-rail modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC274CN | 10 mV max input offset voltage (vs. 5 mV for TLC274ACN) - higher initial DC error but identical noise, bandwidth, and supply range. | Acceptable where system calibration compensates for offset; not suitable for uncalibrated high-accuracy sensor paths. | Select TLC274CN only when cost sensitivity outweighs 0.5% additional gain error in open-loop configurations. |
| TLC27L4ACN | Micro-power variant: 110 µA supply current per amplifier (vs. 1.6 mA for TLC274ACN); 110 kHz GBW; 1.7 mV max VIO - trades speed and precision for battery life. | Targeted at ultra-low-power portable devices with <10 µA sleep current budgets - unsuitable for real-time control or audio-band applications. | Choose TLC27L4ACN exclusively for energy-harvesting or coin-cell-powered endpoints requiring >1-year runtime between replacements. |
Compared with TLC274CN and TLC27L4ACN, the TLC274ACN provides the optimal balance of precision (5 mV VIO), speed (4.5 MHz GBW), and noise (10.8 nV/√Hz) for industrial analog signal chains where calibration headroom and dynamic response are constrained - making it the default choice for new designs requiring verified performance across temperature and supply variation.
Availability
TLC274ACN is available at Aetrix Electronics and suitable for strain gauge interfaces, thermocouple signal conditioning, portable medical ECG front-ends, programmable logic controller analog input modules, and industrial sensor transmitters requiring stable component supply across extended production lifecycles.
Supply support for TLC274ACN 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 delivering analog and embedded processing solutions, with over 50 years of op-amp innovation and broad manufacturing scale.
The TLC27xx family was designed specifically for precision, low-power, single-supply analog signal conditioning - targeting industrial, medical, and test equipment where rail-to-rail input/output and CMOS input advantages are essential.
FAQ
What is the maximum operating temperature range for the TLC274ACN?
The TLC274ACN is rated for operation from 0°C to 70°C ambient temperature. This C-suffix grade is validated per TI's SLOS092E datasheet across that full range, with electrical characteristics guaranteed - including 5 mV max input offset voltage and 4.5 MHz unity-gain bandwidth - under all conditions within those limits. Operation outside this range may result in parametric degradation or functional failure.
Does the TLC274ACN support true rail-to-rail input operation?
The TLC274ACN supports rail-to-rail *output* swing (within 50 mV of GND and VDD), but its input common-mode range extends only to –0.1 V below GND and up to VDD–1 V. It does not accept signals at the positive rail - unlike true rail-to-rail input op-amps. This design enables robust single-supply operation while maintaining CMOS input integrity and low bias current.
Can the TLC274ACN drive capacitive loads directly?
The TLC274ACN is stable with capacitive loads up to 20 pF when configured for unity gain, as verified in the datasheet's typical characteristics (Figure 4-10). Driving larger capacitive loads (e.g., long cables or ADC input capacitance >20 pF) requires isolation via a series resistor or a dedicated buffer stage to prevent peaking or oscillation - no internal compensation is provided for heavy capacitive loading.
Is the TLC274ACN pin-compatible with other TLC27xx variants in PDIP-14?
Yes - the TLC274ACN shares identical pinout and footprint with TLC274CN, TLC274BCN, TLC274IN, and TLC279CN in the N (PDIP-14) package. All variants use the same 14-pin configuration shown in Figure 3-1 of SLOS092E, enabling drop-in replacement for offset voltage grade upgrades without PCB revision - provided thermal and supply constraints remain within spec.
What is the typical supply current consumption of the TLC274ACN?
The TLC274ACN draws 2.24 mA typical and 6.4 mA maximum total supply current (all four amplifiers active, no load, VDD = 5 V, TA = 25°C). At 10 V supply, typical current rises to 2.24 mA and max to 8 mA. This quiescent current remains stable across temperature and supports predictable power budgeting in multi-channel analog subsystems.
TLC274ACN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 3.6V/µs
- Gain Bandwidth Product:
- 2.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.6 pA
- Voltage - Input Offset:
- 900 µV
- Current - Supply:
- 2.7mA (x4 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TLC274ACN FAQ
1.How can I place an order for TLC274ACN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC274ACN 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 TLC274ACN reliable?
The price and inventory of TLC274ACN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC274ACN is usually 5 days.
3.What payment methods are accepted for TLC274ACN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC274ACN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC274ACN?
TLC274ACN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC274ACN 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 TLC274ACN?
For technical support, including TLC274ACN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC274ACN requirements.
6.How does Aetrix verify that TLC274ACN is sourced from the original manufacturer or authorized distributors?
All TLC274ACN 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 TLC274ACN meets industry standards.
7.What is the process for return or replacement of TLC274ACN?
All TLC274ACN units undergo pre-shipment inspection (PSI). If there is an issue with TLC274ACN, 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 TLC274ACN part is unused and in its original packaging.
Return procedure for TLC274ACN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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