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Texas Instruments TLC274AIN
- Part No.:
- TLC274AIN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC274AIN.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,844
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Product details
Overview
TLC274AIN from Texas Instruments is a precision quad operational amplifier optimized for single-supply operation, featuring 10 mV max input offset voltage (C-suffix), 10.8 nV/√Hz input voltage noise at 1 kHz, and rail-to-rail output swing down to ground. It operates from 3 V to 16 V over 0°C to 70°C and delivers high input impedance (>10¹² Ω) for low-bias-current sensor signal conditioning in industrial instrumentation.
For engineers reviewing the TLC274AIN datasheet, TLC274AIN pinout, TLC274AIN application, or TLC274AIN equivalent, this page provides verified electrical specifications, validated 14-pin PDIP package mapping, confirmed single-supply interface behavior, and two technically documented alternative parts for design continuity and sourcing flexibility.
Technical Context
The TLC274AIN uses a polysilicon-gate CMOS process to achieve low input bias current (≤60 pA typ), minimal offset voltage drift (0.3 µV/°C), and latch-up immunity - enabling stable DC-coupled amplification without external protection circuitry. Its input common-mode range extends below ground (–0.1 V min), and output swings to within 50 mV of GND under load.
Designed for precision analog front-ends, it supports unity-gain bandwidth of 4.5 MHz and slew rate of 0.5 V/µs at 5 V supply, with CMRR ≥65 dB and PSRR ≥65 dB across its operating temperature range - making it suitable for multi-channel signal conditioning where channel-to-channel matching and supply rejection are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 10 mV max at 25°C - sets DC accuracy limit in precision gain stages and sensor bridges |
| Input Voltage Noise | 10.8 nV/√Hz at 1 kHz - enables low-noise amplification of microvolt-level signals above 50 kΩ source impedance |
| Supply Voltage Range | 3 V to 16 V - supports direct interfacing with 3.3 V, 5 V, and 12 V logic/system rails without level-shifting |
| Common-Mode Input Range | –0.1 V to 3.5 V at 5 V supply - allows ground-referenced inputs in single-supply configurations |
| Output Voltage Swing | 0 V to 4.95 V (min) at 5 V supply - delivers full dynamic range into 10 kΩ loads without negative rail |
| Unity-Gain Bandwidth | 4.5 MHz - supports stable closed-loop operation up to ~100 kHz with moderate gain and capacitive loads |
| Input Bias Current | ≤60 pA typical - permits use of high-value feedback networks (e.g., >1 MΩ) without significant error |
Pinout & Package
Package: N (PDIP-14), 19.3 mm × 9.4 mm body size with 0.3 inch lead spacing - compatible with standard through-hole PCB assembly and socketing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output | Amplifier channel 1 output - drives external load or next stage with rail-to-rail swing capability |
| 1IN– | Input | Inverting input for channel 1 - accepts feedback network connection for stable closed-loop gain |
| 1IN+ | Input | Noninverting input for channel 1 - connects to reference or sensor signal with high-impedance loading |
| VDD | Power Supply | Positive supply rail (3–16 V) - powers all four amplifiers; requires local 0.1 µF ceramic bypass |
| GND | Power Supply | Negative supply or system ground - serves as return path for all channels and reference point for inputs/outputs |
| 4OUT | Output | Amplifier channel 4 output - identical performance to 1OUT; enables independent 4-channel signal processing |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply optimization | Input common-mode range includes ground and output swings to GND - eliminates need for dual supplies in portable/industrial systems |
| Latch-up immunity | Manufactured with robust polysilicon-gate CMOS process - prevents destructive latch-up during overvoltage transients or ESD events |
| ESD protection | Integrated circuitry rated per JEDEC JS-001 - withstands ≥2 kV HBM without functional degradation |
| Low input bias current | ≤60 pA typical at 25°C - enables high-impedance sensor interfaces (e.g., pH electrodes, piezoresistive bridges) without signal loss |
| Wide temperature stability | Offset voltage drift ≤0.3 µV/°C - maintains calibration integrity across 0°C to 70°C ambient without active compensation |
Applications
| Industrial Sensor Signal Conditioning | Portable Instrumentation Amplifiers |
|---|---|
|
Use Scenario: Amplifying low-level outputs from strain gauges, thermocouples, or RTDs in PLC I/O modules. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with offset trimming and noise filtering before ADC sampling. Use Value: 10 mV max VIO and 10.8 nV/√Hz noise ensure <1 LSB error in 12-bit systems with 10 kΩ source impedance. |
Use Scenario: Building battery-powered handheld multimeters or environmental monitors with multi-channel analog front-ends. IC Role / Device Role / Timing Role: Quad op-amp providing simultaneous buffer, filter, reference, and drive functions in compact layout. Use Value: 3 V minimum supply and rail-to-rail output extend usable battery life and dynamic range in 3.3 V systems. |
| Medical Patient Monitoring | Automotive Cabin Sensors |
|
Use Scenario: Conditioning ECG, EEG, or pulse oximetry signals in Class II medical devices requiring low-power, low-noise analog stages. IC Role / Device Role / Timing Role: High-Z input buffer and anti-aliasing filter driver prior to isolation and digitization. Use Value: ≤60 pA input bias current prevents electrode polarization errors; CMRR ≥65 dB rejects 50/60 Hz interference. |
Use Scenario: Signal conditioning for cabin temperature, humidity, and CO₂ sensors in automotive HVAC control units. IC Role / Device Role / Timing Role: Multi-channel sensor interface with integrated reference generation and linearization circuitry. Use Value: Stable VIO drift (0.3 µV/°C) ensures calibration retention across –40°C to +85°C automotive temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464AIDR | Lower input offset (1.6 mV max), higher quiescent current (520 µA/channel), rail-to-rail I/O | Better DC accuracy but higher power - suited for battery-constrained designs needing tighter offset specs | Select when VIO < 2 mV is required and supply current budget allows ≥2 mA total |
| OPA4188AIDR | Zero-drift architecture, 0.003 µV/°C drift, 150 µV max VIO, higher cost | Superior long-term stability and temperature drift - used in metrology-grade calibration equipment | Choose for applications demanding sub-µV/°C drift and <200 µV VIO over full temperature range |
Compared with TLC274AIN, TLV2464AIDR offers improved offset accuracy at higher supply current, while OPA4188AIDR delivers near-zero drift performance at premium cost - both require layout review due to different bandwidth and stability characteristics.
Availability
TLC274AIN is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, portable instrumentation amplifiers, medical patient monitoring, and automotive cabin sensors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC274AIN 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 decades of heritage in precision op-amp design and manufacturing.
The TLC27xx family was engineered for cost-sensitive, high-accuracy analog signal chains in industrial, medical, and test equipment - emphasizing single-supply usability, low power, and robustness without sacrificing DC precision.
FAQ
What is the maximum input offset voltage specification for TLC274AIN?
The TLC274AIN has a maximum input offset voltage of 10 mV at 25°C and 12 mV across the full 0°C to 70°C operating range. This value is guaranteed per the C-suffix grade and defines the worst-case DC error introduced by the amplifier in unity-gain configurations - critical for precision sensor interfaces where offset must be trimmed or compensated in system calibration.
Does TLC274AIN support true rail-to-rail input operation?
No, the TLC274AIN does not support rail-to-rail input. Its common-mode input voltage range extends to –0.1 V (below GND) and up to 3.5 V at 5 V supply, but it does not reach VDD. However, the output is rail-to-rail - swinging from GND to within 50 mV of VDD - making it ideal for single-supply applications where input referencing is managed externally.
What package type is used for the TLC274AIN part number?
The TLC274AIN is packaged in a 14-pin plastic dual in-line package (PDIP-N), with dimensions 19.3 mm × 9.4 mm and standard 0.3 inch lead spacing. This through-hole package supports prototyping, socket-based testing, and legacy industrial PCB assemblies where surface-mount alternatives like SOIC or TSSOP are not feasible.
Can TLC274AIN operate from a 3.3 V supply?
Yes, the TLC274AIN is fully specified to operate from 3 V to 16 V, including 3.3 V nominal supplies. At 3.3 V, it maintains rail-to-rail output swing (0 V to ~3.25 V), 10.8 nV/√Hz noise, and input common-mode range down to –0.1 V - enabling direct integration with 3.3 V microcontrollers and ADCs without level-shifting circuitry.
How does the input bias current of TLC274AIN affect high-impedance sensor interfaces?
The TLC274AIN's input bias current is ≤60 pA typical, allowing use with sensor impedances up to 100 MΩ without introducing significant offset error. For example, a 10 MΩ source impedance generates only 0.6 µV of additional offset - well below its 10 mV VIO spec - making it suitable for pH electrodes, photodiode transimpedance stages, and piezoelectric charge amplifiers.
TLC274AIN 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):
- 4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TLC274AIN FAQ
1.How can I place an order for TLC274AIN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC274AIN 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 TLC274AIN reliable?
The price and inventory of TLC274AIN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC274AIN is usually 5 days.
3.What payment methods are accepted for TLC274AIN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC274AIN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC274AIN?
TLC274AIN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC274AIN 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 TLC274AIN?
For technical support, including TLC274AIN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC274AIN requirements.
6.How does Aetrix verify that TLC274AIN is sourced from the original manufacturer or authorized distributors?
All TLC274AIN 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 TLC274AIN meets industry standards.
7.What is the process for return or replacement of TLC274AIN?
All TLC274AIN units undergo pre-shipment inspection (PSI). If there is an issue with TLC274AIN, 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 TLC274AIN part is unused and in its original packaging.
Return procedure for TLC274AIN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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