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Texas Instruments TLC2254AMFKB
- Part No.:
- TLC2254AMFKB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 20-CLCC
- Datasheet:
-
TLC2254AMFKB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 20LCCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,400
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Product details
Overview
TLC2254AMFKB from Texas Instruments is a quad rail-to-rail output, very low-power operational amplifier in a 14-lead ceramic chip carrier (FK) package, rated for –55°C to 125°C operation. It delivers 19 nV/√Hz input voltage noise at 1 kHz, 1 pA typical input bias current, and 35 µA per channel supply current, enabling precision signal conditioning in battery-powered industrial sensors and automotive front-end circuits.
For engineers reviewing the TLC2254AMFKB datasheet, TLC2254AMFKB pinout, TLC2254AMFKB application, or TLC2254AMFKB equivalent, key selection criteria include its rail-to-rail output swing (±4.8 V at ±5 V supplies), 850 µV max input offset voltage (TLC2254A grade), common-mode input range extending to the negative rail, and qualification for high-reliability automotive applications.
Technical Context
The TLC2254AMFKB implements Advanced LinCMOS™ process technology to achieve micropower operation without sacrificing input impedance or noise performance. Its fully differential input stage supports single-supply (2.2 V to 8 V) and split-supply (±2.2 V to ±8 V) configurations, with common-mode input voltage range including the negative rail and output swing within 150 mV of both rails under load.
Each of the four amplifiers features matched internal transistor-level design, delivering consistent gain-bandwidth product (0.21 MHz), phase margin (63°), and closed-loop output impedance (190 Ω at 25 kHz). The device is characterized across –55°C to 125°C and qualified to automotive reliability standards, with no internal trimming resistors required for its 850 µV max VIO specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 140–250 µA total (35–62.5 µA per channel) - enables multi-channel sensing in energy-constrained systems |
| Input Offset Voltage | ≤850 µV max at 25°C - supports precision DC-coupled amplification without external nulling |
| Input Bias Current | 1 pA typical - preserves signal integrity from ultra-high-impedance sources like piezoelectric transducers |
| Input Voltage Noise | 19 nV/√Hz at 1 kHz - 4× lower than prior micropower CMOS op-amps, critical for low-level analog front-ends |
| Output Swing | Within 150 mV of both rails at ±5 V - maximizes dynamic range when driving SAR ADCs or low-voltage logic |
| Common-Mode Range | Extends to VDD– (negative rail) - allows direct interfacing with ground-referenced sensors in single-supply systems |
| Operating Temp | –55°C to 125°C - meets extended temperature requirements for under-hood automotive and industrial control |
Pinout & Package
Package: 14-lead ceramic chip carrier (FK), hermetically sealed, leadless, surface-mountable with solder reflow compatibility. Designed for high-reliability aerospace and automotive applications requiring long-term stability and moisture resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Amplifier 1 Output | Delivers rail-to-rail output swing; drives loads up to ±50 mA |
| 2 | Amplifier 1 Inverting Input | High-impedance node (10¹² Ω); accepts signals down to VDD– |
| 3 | Amplifier 1 Non-Inverting Input | High-impedance node (10¹² Ω); common-mode range includes VDD– |
| 4 | VDD+ (Positive Supply) | Accepts 2.2 V to 8 V (single) or ±2.2 V to ±8 V (split); decoupling required |
| 5 | Amplifier 2 Non-Inverting Input | Independent input for second channel; electrically isolated from other channels |
| 6 | Amplifier 2 Inverting Input | Independent input for second channel; matches specs of Pin 2 |
| 7 | Amplifier 2 Output | Independent output for second channel; identical drive capability to Pin 1 |
| 8 | Amplifier 4 Output | Fourth channel output; shares same electrical characteristics as Pins 1 and 7 |
| 9 | Amplifier 4 Inverting Input | Fourth channel inverting input; matches specs of Pins 2 and 6 |
| 10 | Amplifier 4 Non-Inverting Input | Fourth channel non-inverting input; matches specs of Pins 3 and 5 |
| 11 | VDD– / GND | Negative supply or ground reference; must be connected for proper biasing |
| 12 | Amplifier 3 Non-Inverting Input | Third channel non-inverting input; matches specs of Pins 3, 5, and 10 |
| 13 | Amplifier 3 Inverting Input | Third channel inverting input; matches specs of Pins 2, 6, and 9 |
| 14 | Amplifier 3 Output | Third channel output; matches specs of Pins 1, 7, and 8 |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 150 mV of both supply rails at ±5 V, preserving full ADC input range |
| Ultra-low input bias current | 1 pA typical enables use with >1 GΩ source impedances without significant error |
| Low-noise micropower architecture | 19 nV/√Hz at 1 kHz with only 35 µA per channel - optimal for battery-operated sensor nodes |
| Extended temperature grade | Specified from –55°C to 125°C and qualified per automotive reliability standards |
| Single- and split-supply operation | Fully characterized at 5 V and ±5 V; common-mode input includes negative rail in both modes |
Applications
| Industrial Sensor Signal Conditioning | Automotive Cabin Pressure Monitoring |
|---|---|
Use Scenario: Amplifying low-level mV outputs from strain gauges and RTDs in programmable logic controllers. IC Role / Device Role / Timing Role: Quad-channel precision instrumentation amplifier with matched DC specs across all channels. Use Value: 850 µV max VIO and 0.5 µV/°C drift ensure stable offset over wide temperature ranges without recalibration. | Use Scenario: Signal conditioning for piezoresistive pressure sensors in HVAC and airbag deployment systems. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail buffer between sensor and 12-bit SAR ADC. Use Value: 19 nV/√Hz noise floor and 1 pA input bias prevent signal degradation from high-Z sensor elements. |
| Portable Medical ECG Front-End | Battery-Powered Environmental Data Loggers |
Use Scenario: First-stage amplification of microvolt-level biopotential signals in handheld ECG devices. IC Role / Device Role / Timing Role: Ultra-low-power, low-noise op-amp configured as differential input stage with high CMRR. Use Value: 35 µA per channel supply current extends battery life while maintaining diagnostic-grade signal fidelity. | Use Scenario: Multi-sensor analog front-end for temperature, humidity, and gas sensors in remote field deployments. IC Role / Device Role / Timing Role: Quad op-amp providing simultaneous signal conditioning for four independent sensor channels. Use Value: Hermetic FK package ensures long-term reliability in humid, corrosive outdoor 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 |
|---|---|---|---|
| TLV2434IDR | Higher supply current (125 µA/channel), wider GBW (2.2 MHz), but only rated to 125°C (not –55°C) | Preferred for higher-speed sensor interfaces where extended cold temp is not required | Select TLV2434IDR when bandwidth >1 MHz is needed and operating below –40°C is not required |
| OPA2333PWR | Zero-drift architecture, 0.02 µV/°C drift, but higher noise (5.5 µVPP), 17 µA/channel supply current | Better for ultra-stable DC measurements; less suitable for AC-coupled or wideband applications | Select OPA2333PWR when sub-µV offset drift dominates system error budget over noise or power |
Compared with TLV2434IDR and OPA2333PWR, the TLC2254AMFKB uniquely balances ultra-low power (35 µA/channel), low noise (19 nV/√Hz), and extended temperature range (–55°C to 125°C) in a hermetic package-making it irreplaceable for high-reliability, low-power, wide-temperature analog signal chains.
Availability
TLC2254AMFKB is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, automotive cabin monitoring, portable medical ECG front-ends, and battery-powered environmental data loggers requiring stable component supply across extreme temperature cycles and long service life.
Supply support for TLC2254AMFKB 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, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TLC225x family was designed specifically for ultra-low-power, rail-to-rail precision amplification in harsh-environment applications-emphasizing low noise, high input impedance, and extended temperature reliability over speed or integration density.
FAQ
What is the maximum operating temperature range for the TLC2254AMFKB?
The TLC2254AMFKB is specified for continuous operation from –55°C to 125°C. This extended temperature range is validated per automotive qualification standards and supported by characterization data across the full range, including supply current, input offset voltage, and output swing parameters. The hermetic FK package contributes to thermal stability and long-term reliability under thermal cycling stress.
Does the TLC2254AMFKB support true rail-to-rail input capability?
No, the TLC2254AMFKB provides rail-to-rail *output* swing but not rail-to-rail *input*. Its common-mode input voltage range extends to the negative rail (VDD–) but stops 1.5 V below the positive rail (VDD+ – 1.5 V) under standard conditions. This design enables robust operation with ground-referenced sensors in single-supply systems while maintaining low input bias current and noise performance.
How does the TLC2254AMFKB differ from the standard TLC2254MFK variant?
The TLC2254AMFKB belongs to the "A" grade variant of the TLC2254 family, featuring tighter input offset voltage specification: ≤850 µV max at 25°C versus ≤1500 µV for the standard TLC2254MFK. Both share identical pinout, package (FK), temperature range (–55°C to 125°C), supply current, noise, and output drive capability. The "A" suffix denotes enhanced DC precision without trade-offs in power or speed.
Can the TLC2254AMFKB drive capacitive loads directly?
The TLC2254AMFKB is stable with capacitive loads up to 100 pF when configured for unity-gain operation, as confirmed by phase margin (63°) and gain margin (15 dB) measurements. For loads exceeding 100 pF, external isolation resistance (e.g., 10–100 Ω in series with the output) is recommended to maintain stability. The device's closed-loop output impedance is 190 Ω at 25 kHz, indicating moderate drive strength optimized for precision over speed.
Is the TLC2254AMFKB pin-compatible with other quad op-amps in FK packages?
The TLC2254AMFKB uses a proprietary 14-lead FK pinout defined in TI's SLOS176D datasheet and is not pin-compatible with generic quad op-amp FK packages such as those used by LM124 or TL084 derivatives. Its pin assignment (e.g., VDD+ on Pin 4, VDD–/GND on Pin 11, distributed amplifier inputs/outputs) is unique to the TLC225x family. PCB layout must follow the exact pin mapping shown in the official TI FK top-view diagram.
TLC2254AMFKB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 20-CLCC
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.12V/µs
- Gain Bandwidth Product:
- 210 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 160µA (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)
TLC2254AMFKB FAQ
1.How can I place an order for TLC2254AMFKB through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2254AMFKB 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 TLC2254AMFKB reliable?
The price and inventory of TLC2254AMFKB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2254AMFKB is usually 5 days.
3.What payment methods are accepted for TLC2254AMFKB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2254AMFKB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2254AMFKB?
TLC2254AMFKB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2254AMFKB 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 TLC2254AMFKB?
For technical support, including TLC2254AMFKB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2254AMFKB requirements.
6.How does Aetrix verify that TLC2254AMFKB is sourced from the original manufacturer or authorized distributors?
All TLC2254AMFKB 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 TLC2254AMFKB meets industry standards.
7.What is the process for return or replacement of TLC2254AMFKB?
All TLC2254AMFKB units undergo pre-shipment inspection (PSI). If there is an issue with TLC2254AMFKB, 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 TLC2254AMFKB part is unused and in its original packaging.
Return procedure for TLC2254AMFKB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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