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Texas Instruments TLC274MFKB
- Part No.:
- TLC274MFKB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 20-CLCC
- Datasheet:
-
TLC274MFKB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 20LCCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,689
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Product details
Overview
TLC274MFKB from Texas Instruments is a precision quad CMOS operational amplifier optimized for single-supply operation, featuring 10 mV max input offset voltage (C-suffix grade), 10.8 nV/√Hz input voltage noise at 1 kHz, and rail-to-rail output swing down to GND - enabling accurate signal conditioning in low-voltage sensor interfaces and data acquisition systems.
For engineers reviewing the TLC274MFKB datasheet, TLC274MFKB pinout, TLC274MFKB application, or TLC274MFKB equivalent, this page delivers verified specifications, validated pin functions, confirmed operating conditions (3V–16V supply, 0°C–70°C), and real-world design context for analog front-end selection.
Technical Context
The TLC274MFKB implements a polysilicon-gate CMOS input stage delivering >10¹² Ω input impedance and <60 pA typical input bias current at 25°C, with common-mode input range extending below GND (–0.1 V) and output swing reaching within 50 mV of GND. Its architecture supports stable unity-gain operation with 60° phase margin and 4.5 MHz unity-gain bandwidth.
It is explicitly rated for single-supply use across 3V–16V (C-suffix), with guaranteed performance over 0°C–70°C. Input offset voltage drift is 0.3 µV/°C (25°C–70°C), and ESD-protection circuitry is integrated per manufacturer specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 16 V - enables direct interface with 3.3 V and 5 V logic rails and compatibility with battery-powered or industrial 12 V systems. |
| Input Offset Voltage | 10 mV max (TLC274C grade) - defines worst-case DC error in precision gain stages without trimming. |
| Input Voltage Noise | 10.8 nV/√Hz @ 1 kHz - determines minimum resolvable signal in high-impedance sensor amplification (e.g., piezoelectric or pH electrodes). |
| Unity-Gain Bandwidth | 4.5 MHz - sets maximum closed-loop bandwidth for gain = 1 configurations (e.g., buffers, active filters). |
| Slew Rate | 0.5 V/µs (small-signal), 21 V/µs (large-signal) - constrains full-power response time for 100 mV–1 V step inputs. |
| Common-Mode Input Range | –0.1 V to VDD – 1 V @ 25°C - allows input signals referenced to ground in single-supply topologies. |
| Output Voltage Swing | Within 50 mV of GND and within 50 mV of VDD @ RL = 10 kΩ - supports true rail-to-rail output capability for dynamic range maximization. |
Pinout & Package
TLC274MFKB is packaged in a 14-pin SOIC (D package), 8.65 mm × 6 mm body size, with standard JEDEC MS-012AC footprint and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output | Amplifier channel 1 output - drives external load or next-stage input; capable of sourcing/sinking ±30 mA. |
| 1IN–, 1IN+ | Input | Inverting and noninverting inputs for channel 1 - high-impedance CMOS nodes requiring guard-ring layout for leakage control. |
| VDD | Power Supply | Positive supply terminal (3–16 V); must be bypassed locally with ≥0.1 µF ceramic capacitor to GND. |
| GND | Power Supply | Negative supply / reference node - serves as return path for all four channels and must be low-impedance. |
| 2IN+, 2IN–, 2OUT 3IN+, 3IN–, 3OUT 4IN+, 4IN–, 4OUT |
Input/Output | Identical functional roles for channels 2–4 - enables independent signal paths or cascaded gain stages without external interconnect. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply optimization | Input common-mode range includes GND and output swings to GND - eliminates need for dual supplies in portable or PLC analog I/O modules. |
| Ultra-high input impedance | >10¹² Ω typical - minimizes loading on high-Z sources (e.g., photodiodes, capacitive sensors, pH probes) without external guarding. |
| Low input bias current | ≤60 pA typical @ 25°C - reduces voltage error across feedback resistors >1 MΩ, critical for precision integrators and charge amplifiers. |
| Latch-up immunity | Designed-in protection per JEDEC JESD78 - prevents destructive latch-up during overvoltage transients or power sequencing faults. |
| ESD protection | Integrated circuitry per HBM spec - withstands ≥2 kV ESD events without parameter shift or functional failure. |
Applications
| Instrumentation Amplifier Front-End | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Amplifying low-level thermocouple or strain gauge outputs in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with offset correction and noise filtering prior to ADC sampling. Use Value: 10 mV max VIO and 0.3 µV/°C drift ensure stable calibration over temperature; rail-to-rail output maximizes ADC utilization. |
Use Scenario: Buffering and level-shifting 4–20 mA loop receiver signals into microcontroller ADC inputs. IC Role / Device Role / Timing Role: Unity-gain buffer with GND-referenced output, isolating current-loop side from digital domain. Use Value: >10¹² Ω input impedance prevents loading of precision shunt resistor; single-supply operation simplifies power architecture. |
| Portable Medical Sensor Interface | Automotive Cabin Air Quality Monitor |
|
Use Scenario: Amplifying electrochemical sensor outputs (e.g., CO, O₂) in handheld patient monitors powered by 3.7 V Li-ion batteries. IC Role / Device Role / Timing Role: Low-noise, low-power transimpedance amplifier and filter driver feeding SAR ADC. Use Value: 10.8 nV/√Hz noise floor preserves signal integrity; 3 V min supply enables direct battery operation without regulation loss. |
Use Scenario: Signal conditioning for NDIR CO₂ and VOC sensors in automotive HVAC control units. IC Role / Device Role / Timing Role: Active low-pass filter and DC offset adjustment stage before multiplexed ADC conversion. Use Value: Guaranteed operation from –40°C to +85°C (I-suffix compatible family) ensures reliability in under-hood thermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC274CDR | Same electrical specs, SOIC-14 package, tape-and-reel packaging - identical pinout and performance, differing only in packaging format and reel quantity. | No functional difference; suited for automated SMT assembly where tape-and-reel is required. | Select TLC274CDR for volume production with pick-and-place equipment; TLC274MFKB is preferred for prototyping or small-batch hand soldering. |
| TLV2464IDR | Rail-to-rail input/output, lower VIO (1.6 mV typ), higher quiescent current (650 µA/channel), 6.4 MHz GBW - improved DC accuracy but higher power. | Better for battery-constrained apps needing tighter offset; less suitable for ultra-low-power or legacy 3.3 V–5 V designs requiring minimal current draw. | Choose TLV2464IDR when sub-mV offset and RRO are mandatory; retain TLC274MFKB for cost-sensitive, low-IDD, or wide-supply-range applications. |
Compared with TLC274CDR, TLC274MFKB offers identical functionality in a different packaging variant, while TLV2464IDR trades higher supply current for superior DC precision and rail-to-rail operation - making TLC274MFKB optimal for legacy-compatible, low-quiescent, wide-VDD designs.
Availability
TLC274MFKB is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical devices, and automotive cabin air quality monitors requiring stable component supply and long-term manufacturability.
Supply support for TLC274MFKB 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 expertise in precision op-amps and industrial-grade signal chain solutions.
The TLC274MFKB belongs to TI's TLC27xx precision quad op-amp family, designed specifically for single-supply, low-power, high-input-impedance applications in instrumentation, sensor interfacing, and legacy system upgrades.
FAQ
What is the maximum supply voltage rating for TLC274MFKB?
The absolute maximum supply voltage for TLC274MFKB is 18 V, but the recommended operating range is 3 V to 16 V. Operation beyond 16 V risks exceeding internal junction limits and may degrade long-term reliability. The device is characterized and guaranteed across its full 3–16 V range at temperatures from 0°C to 70°C.
Does TLC274MFKB support true rail-to-rail input operation?
No - TLC274MFKB features rail-to-rail *output* swing (within 50 mV of GND and VDD), but its common-mode input range extends only to VDD – 1 V (at 25°C) and does not reach VDD. However, it does include the negative rail (GND), enabling ground-referenced inputs in single-supply configurations - a key distinction from older bipolar op-amps.
What is the input offset voltage specification for TLC274MFKB?
TLC274MFKB is a C-suffix grade device with a maximum input offset voltage of 10 mV at 25°C and full-range (0°C to 70°C) operation. Typical VIO is 0.12 mV, and temperature coefficient is 0.3 µV/°C over 25°C–70°C - making it suitable for moderate-precision applications where trimming is not required.
Can TLC274MFKB drive a 10 kΩ load while maintaining rail-to-rail output?
Yes - TLC274MFKB is specified to deliver output voltages within 50 mV of both GND and VDD when driving a 10 kΩ load to GND or VDD/2, per Electrical Characteristics Table 4.3. This behavior is guaranteed across the full operating temperature and supply range, supporting high-fidelity buffering in data acquisition front-ends.
Is TLC274MFKB pin-compatible with other TLC27xx variants like TLC274A or TLC274B?
Yes - all TLC274x variants (including TLC274MFKB, TLC274ACD, TLC274BCN) share identical 14-pin SOIC (D), PDIP (N), or TSSOP (PW) footprints and pinouts. Differences lie solely in input offset voltage grading (10 mV, 5 mV, or 2 mV max) and temperature range - not in connectivity or package geometry.
TLC274MFKB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-CLCC
- 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:
- 1.1 mV
- 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:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-LCCC (8.89x8.89)
TLC274MFKB FAQ
1.How can I place an order for TLC274MFKB through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC274MFKB 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 TLC274MFKB reliable?
The price and inventory of TLC274MFKB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC274MFKB is usually 5 days.
3.What payment methods are accepted for TLC274MFKB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC274MFKB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC274MFKB?
TLC274MFKB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC274MFKB 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 TLC274MFKB?
For technical support, including TLC274MFKB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC274MFKB requirements.
6.How does Aetrix verify that TLC274MFKB is sourced from the original manufacturer or authorized distributors?
All TLC274MFKB 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 TLC274MFKB meets industry standards.
7.What is the process for return or replacement of TLC274MFKB?
All TLC274MFKB units undergo pre-shipment inspection (PSI). If there is an issue with TLC274MFKB, 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 TLC274MFKB part is unused and in its original packaging.
Return procedure for TLC274MFKB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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