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Texas Instruments TLC2274MFKB
- Part No.:
- TLC2274MFKB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 20-CLCC
- Datasheet:
-
TLC2274MFKB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 20LCCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,787
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Product details
Overview
TLC2274MFKB from Texas Instruments is a quad rail-to-rail output operational amplifier designed for precision signal conditioning in low-power, high-impedance sensor interfaces. It delivers 2.2 MHz gain-bandwidth, 3.6 V/µs slew rate, 9 nV/√Hz input voltage noise at 1 kHz, ±2.2 V to ±8 V supply operation, and rail-to-rail output swing - enabling full dynamic range utilization with ADCs in battery-powered instrumentation.
For engineers reviewing the TLC2274MFKB datasheet, TLC2274MFKB pinout, TLC2274MFKB application, or TLC2274MFKB equivalent, key selection criteria include its 1-pA typical input bias current, –55°C to 125°C military-grade temperature range, low 6 mA max supply current, and compatibility with single- or split-supply configurations in transducer interface and remote sensing designs.
Technical Context
The TLC2274MFKB employs 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 includes common-mode voltage range extending to the negative rail, supporting true single-supply operation down to 4.4 V total supply.
Internally compensated for unity-gain stability with 52° phase margin (±5 V, RL = 10 kΩ, CL = 100 pF), it supports closed-loop gains from –1 to ≥100 with ≤3.2 µs settling to 0.01% for ±2.3 V steps - making it suitable for precision DC-coupled amplification and buffered analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±2.2 V to ±8 V - supports wide-range split supplies and 4.4–16 V single-supply operation |
| Gain-Bandwidth Product | 2.25 MHz (±5 V) - enables stable unity-gain buffering and moderate-speed filtering up to ~200 kHz |
| Slew Rate | 3.6 V/µs (±5 V) - supports 1-Vpp signals up to ~570 kHz without slew-induced distortion |
| Input Bias Current | 1 pA typical - preserves signal integrity in high-impedance piezoelectric or pH sensor interfaces |
| Input Voltage Noise | 9 nV/√Hz at 1 kHz - 2× lower than legacy TLC274, critical for low-level signal amplification |
| Input Offset Voltage | 2.5 mV maximum (25°C) - ensures <0.1% error in 2.5 V full-scale measurement systems |
| Common-Mode Range | Includes negative rail (VDD−) - allows direct interfacing with ground-referenced sensors in single-supply systems |
| Output Swing | Rail-to-rail - delivers >4.9 Vpp into 10 kΩ load at ±5 V, maximizing ADC utilization |
Pinout & Package
The TLC2274MFKB is packaged in a 20-pin LCCC (FK package) with hermetic ceramic construction rated for –55°C to 125°C operation. Pin 1 is NC; pins 4 and 6 connect to VDD+ and VDD−/GND respectively; channels are arranged as independent op-amps with non-inverting/inverting inputs and outputs mapped per TI's FK pinout standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 7, 11, 15, 17 | No connection (NC) | Unbonded die pads - must be left floating; no PCB routing or grounding required |
| 2, 3 | 1IN+, 1IN− | Differential inputs for Channel 1 - high-impedance (10¹² Ω) nodes for sensor signal injection |
| 4 | VDD+ | Positive supply terminal - connects to highest potential rail (e.g., +5 V or +8 V) |
| 6 | VDD−/GND | Negative supply or ground reference - accepts split (–5 V) or single-supply (0 V) configuration |
| 8, 10 | 2OUT, 2IN+ | Output and non-inverting input of Channel 2 - routed separately to avoid crosstalk in multi-channel filtering |
| 9, 13 | 2IN−, 3IN− | Inverting inputs for Channels 2 and 3 - matched layout critical for common-mode rejection |
| 12, 14 | 3OUT, 4OUT | Outputs for Channels 3 and 4 - each capable of sourcing/sinking ±50 mA for driving ADC reference buffers |
| 16 | VDD− | Secondary negative supply pin - tied internally to Pin 6; used for thermal and EMI mitigation in high-reliability layouts |
| 18, 19, 20 | 4IN+, 4IN−, 4OUT | Full fourth channel I/O set - enables 4-channel simultaneous acquisition without external multiplexing |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers >99% of supply rails under load - eliminates level-shifting circuitry when driving SAR or delta-sigma ADCs |
| Low input bias current (1 pA typ) | Minimizes voltage drop across >1 GΩ source impedances - essential for piezoelectric accelerometers and ion-selective electrodes |
| Low noise (9 nV/√Hz @ 1 kHz) | Enables 16-bit effective resolution in 100 Hz bandwidth systems without external filtering |
| Specified over –55°C to 125°C | Validated for MIL-STD-883 Class B operation - suitable for avionics, downhole tools, and engine control units |
| Macromodel included | SPICE model validated against production characterization - accelerates accurate AC/DC/transient simulation in TINA-TI |
| Performance upgrade vs TLC274 | 2× lower noise, 2.5× lower input offset voltage, and rail-to-rail output - drop-in replacement in legacy designs requiring higher fidelity |
Applications
| Transducer Signal Conditioning | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Amplifying low-amplitude, high-impedance outputs from piezoelectric pressure sensors in industrial monitoring systems. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with rail-to-rail output driving 16-bit SAR ADC reference input. Use Value: 1-pA input bias prevents signal attenuation; 9-nV/√Hz noise preserves SNR; rail-to-rail swing maximizes ADC code utilization. | Use Scenario: Front-end signal chain in handheld gas analyzers operating on coin-cell batteries for >1-year life. IC Role / Device Role / Timing Role: Quad-channel low-power op-amp performing sensor biasing, filtering, and level-shifting before ADC sampling. Use Value: 6 mA max supply current extends battery life; –55°C to 125°C rating ensures field reliability; quad integration reduces board area by 60% vs discrete solutions. |
| White Goods Control Systems | Analog Front-End for Data Acquisition |
Use Scenario: Motor current sensing and temperature compensation in refrigerator compressor control modules. IC Role / Device Role / Timing Role: Dual-channel amplifier for shunt-based current measurement and NTC thermistor signal conditioning. Use Value: Input common-mode range including negative rail enables ground-referenced shunt placement; low offset drift (<2 µV/°C) maintains calibration accuracy across ambient temperature swings. | Use Scenario: Multi-channel analog signal conditioning in modular test equipment requiring simultaneous 4-channel acquisition. IC Role / Device Role / Timing Role: Four independent precision amplifiers providing gain, filtering, and drive capability for 4-input ADC subsystem. Use Value: Matched channel specifications ensure inter-channel gain/phase consistency; LCCC package provides low-inductance, hermetic sealing for EMI-sensitive lab environments. |
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 |
|---|---|---|---|
| TLV2444IPW | Lower supply current (1.2 mA/ch), narrower temp range (–40°C to 125°C), no military qualification | Consumer/portable electronics where cost and power dominate; not suitable for extended temperature or high-reliability use | Select TLV2444IPW only for commercial-grade, battery-constrained designs lacking MIL-spec requirements |
| TLC2274CDR | Same core architecture but commercial temperature range (0°C to 70°C), SOIC-14 package, lower price | Industrial automation panels with controlled ambient; lacks hermetic sealing and extended temp validation | Choose TLC2274CDR for cost-sensitive, non-military applications where environmental stress is minimal |
Compared with TLV2444IPW and TLC2274CDR, the TLC2274MFKB uniquely combines military-grade temperature range, hermetic LCCC packaging, and rail-to-rail output in a quad configuration - making it irreplaceable in aerospace, defense, and downhole sensing where reliability under extreme conditions is non-negotiable.
Availability
TLC2274MFKB is available at Aetrix Electronics and suitable for white goods control systems, battery-powered instrumentation, transducer interfaces, and analog front-end data acquisition requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for TLC2274MFKB 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-amps and high-reliability components.
The TLC2274M-MIL product line was engineered for military, aerospace, and industrial applications demanding guaranteed performance across –55°C to 125°C, radiation tolerance, and long-term stability - directly addressing needs in avionics, weapon systems, and energy infrastructure.
FAQ
What is the maximum operating temperature range for the TLC2274MFKB?
The TLC2274MFKB is fully specified from –55°C to 125°C per MIL-STD-883 testing requirements. This extended temperature range is validated for continuous operation in harsh environments such as engine compartments, downhole tools, and space-qualified payloads - unlike commercial variants limited to 0°C–70°C or industrial versions capped at –40°C–125°C.
Does the TLC2274MFKB support single-supply operation?
Yes, the TLC2274MFKB supports true single-supply operation with a minimum total supply of 4.4 V (e.g., 0 V to 4.4 V) and common-mode input range extending to the negative rail. Its rail-to-rail output swing ensures full utilization of the supply range, enabling direct interfacing with unipolar ADCs without level-shifting circuitry - a key advantage over older TLC27x series devices.
What is the input bias current specification for the TLC2274MFKB at 125°C?
At 125°C, the TLC2274MFKB guarantees a maximum input bias current of 800 pA, with typical performance remaining near 1 pA at 25°C. This ultra-low bias current is preserved across temperature due to LinCMOS process optimization, making the device ideal for interfacing with high-impedance sources like photodiodes, pH electrodes, and piezoelectric sensors where leakage would otherwise degrade accuracy.
How does the noise performance of the TLC2274MFKB compare to the TLC274?
The TLC2274MFKB delivers 9 nV/√Hz input voltage noise at 1 kHz - exactly half the 18 nV/√Hz typical value of the TLC274. This 6 dB improvement directly translates to higher signal-to-noise ratio in precision measurement applications, particularly in low-frequency sensor conditioning where noise dominates system resolution limits. The TLC2274MFKB also exhibits lower 1/f noise corner frequency, further enhancing sub-10 Hz performance.
Is the TLC2274MFKB pin-compatible with other packages in the TLC2274M-MIL family?
No - the TLC2274MFKB uses a 20-pin LCCC (FK) package with unique pinout, distinct from the 14-pin SOIC (D), CDIP (J), PDIP (N), or CFP (W) variants. While functional specifications are identical across packages, PCB layout, thermal management, and mounting methods differ significantly. Migration requires redesign of footprint, decoupling, and grounding - especially critical given the LCCC's hermetic construction and superior EMI immunity.
TLC2274MFKB 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:
- 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:
- -55°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-LCCC (8.89x8.89)
TLC2274MFKB FAQ
1.How can I place an order for TLC2274MFKB through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2274MFKB 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 TLC2274MFKB reliable?
The price and inventory of TLC2274MFKB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2274MFKB is usually 5 days.
3.What payment methods are accepted for TLC2274MFKB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2274MFKB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2274MFKB?
TLC2274MFKB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2274MFKB 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 TLC2274MFKB?
For technical support, including TLC2274MFKB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2274MFKB requirements.
6.How does Aetrix verify that TLC2274MFKB is sourced from the original manufacturer or authorized distributors?
All TLC2274MFKB 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 TLC2274MFKB meets industry standards.
7.What is the process for return or replacement of TLC2274MFKB?
All TLC2274MFKB units undergo pre-shipment inspection (PSI). If there is an issue with TLC2274MFKB, 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 TLC2274MFKB part is unused and in its original packaging.
Return procedure for TLC2274MFKB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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