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Texas Instruments TLC2254AIN
- Part No.:
- TLC2254AIN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC2254AIN.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:118
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Product details
Overview
TLC2254AIN from Texas Instruments is a quad rail-to-rail output, very low-power operational amplifier optimized for single- or split-supply battery-powered systems. It delivers 35 µA per channel supply current, 19 nV/√Hz input voltage noise at 1 kHz, and 850 µV maximum input offset voltage at 25°C - enabling precision signal conditioning in high-impedance sensor interfaces such as piezoelectric transducers.
For engineers reviewing the TLC2254AIN datasheet, TLC2254AIN pinout, TLC2254AIN application, or TLC2254AIN equivalent, this device is selected for micropower analog front-ends requiring rail-to-rail output swing, ultra-low input bias current (1 pA typ), and full characterization across –40°C to 125°C for industrial and automotive sensing nodes.
Technical Context
The TLC2254AIN uses Advanced LinCMOS™ process technology to achieve rail-to-rail output swing while maintaining CMOS-level input bias current (1 pA typ) and low noise (19 nV/√Hz). Its common-mode input range extends to the negative rail, supporting single-supply operation down to ±2.2 V.
It features fully specified performance over –40°C to 125°C, with input offset voltage tightly bounded at 850 µV max (TLC2254AI variant), and is characterized for both 5 V single-supply and ±5 V split-supply configurations - making it suitable for interfacing directly with 12-bit and 14-bit ADCs without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current (per channel) | 35 µA typ - enables multi-year battery life in portable instrumentation and remote sensors. |
| Input Offset Voltage | 850 µV max at 25°C - supports DC-coupled precision amplification without trimming in industrial control loops. |
| Input Bias Current | 1 pA typ - preserves signal integrity when driving from high-impedance sources like pH electrodes or photodiodes. |
| Input Voltage Noise | 19 nV/√Hz at 1 kHz - improves SNR in low-frequency sensor signal chains versus prior micropower CMOS op amps. |
| Rail-to-Rail Output Swing | Swings within 10 mV of both rails at light load - maximizes dynamic range into ADCs operating on 3.3 V or 5 V supplies. |
| Common-Mode Input Range | Includes negative rail (VDD–/GND) - allows true single-supply operation with ground-referenced inputs. |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive and industrial motor-control applications. |
Pinout & Package
Package: 14-pin Plastic DIP (N package), through-hole mounting, industry-standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Inverting amplifier output channel A - drives external load or ADC input with rail-to-rail swing. |
| 2 | IN– A | Inverting input for channel A - accepts feedback network or differential signal source. |
| 3 | IN+ A | Non-inverting input for channel A - connects to high-Z sensor or reference voltage. |
| 4 | VDD– / GND | Negative supply or ground reference - shared return for all four amplifiers in single-supply mode. |
| 5 | IN+ B | Non-inverting input for channel B - independent input node for dual-sensor or differential pair use. |
| 6 | IN– B | Inverting input for channel B - supports independent gain-setting resistor network. |
| 7 | OUT B | Inverting amplifier output channel B - provides second independent signal path. |
| 8 | OUT C | Inverting amplifier output channel C - third independent output for multi-channel monitoring. |
| 9 | IN– C | Inverting input for channel C - isolated from other channels for noise-sensitive designs. |
| 10 | IN+ C | Non-inverting input for channel C - enables simultaneous conditioning of three sensor signals. |
| 11 | VDD+ | Positive supply rail - accepts 4.4 V to 16 V (single) or ±2.2 V to ±8 V (split) per datasheet. |
| 12 | IN+ D | Non-inverting input for channel D - fourth independent input for full quad functionality. |
| 13 | IN– D | Inverting input for channel D - supports dedicated feedback for final channel. |
| 14 | OUT D | Inverting amplifier output channel D - completes quad-output capability for compact multi-channel systems. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full supply voltage utilization - eliminates need for level-shifting before 3.3 V or 5 V SAR ADCs. |
| 1 pA typical input bias current | Minimizes voltage error across high-value feedback resistors (>1 MΩ), critical for pH and piezo sensor interfaces. |
| 19 nV/√Hz input voltage noise | Reduces integrated noise floor by 4× vs. legacy micropower CMOS op amps - improves resolution in low-frequency measurements. |
| –40°C to 125°C operation | Validated performance across extended temperature range - supports deployment in engine control units and factory automation. |
| Low 35 µA per-channel quiescent current | Enables always-on sensing in energy-constrained IoT edge nodes - 140 µA total for all four amplifiers. |
Applications
| Industrial Sensor Signal Conditioning | Automotive Cabin Pressure Monitoring |
|---|---|
|
Use Scenario: Amplifying low-level output from silicon piezoresistive pressure sensors in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Quad op amp providing simultaneous gain, filtering, and rail-to-rail buffering for four independent 4–20 mA loop channels. Use Value: 1 pA input bias avoids loading high-impedance bridge sensors; 850 µV VIO ensures <0.1% gain error without calibration. |
Use Scenario: Signal conditioning for MEMS-based cabin pressure sensors in HVAC control units, operating continuously at 85°C ambient. IC Role / Device Role / Timing Role: Precision amplifier stage converting differential bridge output to single-ended signal for 12-bit ADC sampling. Use Value: –40°C to 125°C qualification and 35 µA/channel current enable reliable long-term operation without thermal derating. |
| Battery-Powered Portable Instrumentation | Medical Patient Monitoring Front-End |
|
Use Scenario: Low-power ECG electrode amplifier in handheld diagnostic devices powered by coin-cell batteries. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with high input impedance and rail-to-rail output driving anti-aliasing filter. Use Value: 35 µA per channel extends battery life beyond 5 years; 19 nV/√Hz noise maintains clinical-grade signal fidelity. |
Use Scenario: Analog front-end for wearable pulse oximeter, amplifying weak photodiode currents in low-light conditions. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with ultra-low input bias current to minimize dark-current error. Use Value: 1 pA IIB prevents baseline drift in TIA configurations; rail-to-rail output ensures full ADC code utilization. |
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/ch), higher slew rate (0.5 V/µs), but same 850 µV VIO max and –40°C to 125°C rating. | Better suited for higher-speed multiplexed sensor arrays where bandwidth >100 kHz is required. | Select TLV2434IDR only if slew rate or GBW >0.2 MHz is needed; otherwise TLC2254AIN saves >70% quiescent power. |
| OPA2333PAIDR | Zero-drift architecture (0.02 µV/°C drift), lower VIO (10 µV max), but higher IQ (17 µA/ch) and limited to 0°C to 70°C. | Preferred for ultra-stable DC-coupled applications (e.g., precision weight scales), not extended temperature environments. | Choose OPA2333PAIDR for sub-µV drift-critical DC systems; TLC2254AIN remains optimal for wide-temp, low-power, cost-sensitive designs. |
Compared with TLV2434IDR and OPA2333PAIDR, the TLC2254AIN uniquely balances ultra-low power (35 µA/ch), extended temperature support (–40°C to 125°C), and rail-to-rail output - making it the most efficient choice for always-on industrial and automotive sensor nodes where thermal robustness and battery longevity are primary constraints.
Availability
TLC2254AIN is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, automotive cabin monitoring, and battery-powered portable instrumentation requiring stable component supply and long-lifecycle availability.
Supply support for TLC2254AIN 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 for industrial, automotive, and personal electronics markets.
The TLC225x family was designed specifically for micropower, rail-to-rail output precision amplification in battery-operated and thermally demanding applications - emphasizing low noise, ultra-low input bias current, and extended temperature reliability.
FAQ
What is the maximum supply voltage for the TLC2254AIN?
The TLC2254AIN supports a maximum supply voltage of ±8 V in split-supply mode or 16 V in single-supply operation, as specified in its absolute maximum ratings. Operation beyond these limits risks permanent damage. Recommended operating range is ±2.2 V to ±8 V (split) or 4.4 V to 16 V (single), with full electrical characterization guaranteed at ±5 V and 5 V.
Does the TLC2254AIN have rail-to-rail input capability?
No, the TLC2254AIN does not feature rail-to-rail input. Its common-mode input voltage range extends to the negative rail (VDD–/GND) but stops 1.5 V below the positive rail (VDD+) - e.g., 0 V to 3.5 V with a 5 V supply. This design prioritizes output swing and low power over full input range, distinguishing it from newer rail-to-rail-input op amps.
How does the TLC2254AIN differ from the standard TLC2254CN?
The TLC2254AIN is the automotive-grade variant with an extended temperature range (–40°C to 125°C) and tighter input offset voltage specification (850 µV max at 25°C), whereas the TLC2254CN is commercial-grade (0°C to 70°C) with 1500 µV max VIO. Both share identical pinout, package (14-pin N), and core electrical specs like 35 µA/ch supply current and 19 nV/√Hz noise.
Can the TLC2254AIN drive capacitive loads directly?
The TLC2254AIN is stable with capacitive loads up to 100 pF when configured with unity-gain feedback and a 50 kΩ load, as verified by phase margin (63°) and gain margin (15 dB) data. Driving larger capacitive loads (e.g., >500 pF) requires isolation resistance or external compensation to prevent peaking or oscillation.
Is the TLC2254AIN pin-compatible with the TLC27L4?
Yes, the TLC2254AIN is a direct pin-compatible upgrade to the TLC27L4 in the 14-pin DIP (N) package. It retains identical pinout and footprint while improving key parameters: 4× lower input voltage noise (19 vs. 75 nV/√Hz), lower input offset voltage (850 µV max vs. 2000 µV max), and rail-to-rail output swing - enabling immediate performance enhancement without PCB changes.
TLC2254AIN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- 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:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TLC2254AIN FAQ
1.How can I place an order for TLC2254AIN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2254AIN 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 TLC2254AIN reliable?
The price and inventory of TLC2254AIN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2254AIN is usually 5 days.
3.What payment methods are accepted for TLC2254AIN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2254AIN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2254AIN?
TLC2254AIN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2254AIN 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 TLC2254AIN?
For technical support, including TLC2254AIN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2254AIN requirements.
6.How does Aetrix verify that TLC2254AIN is sourced from the original manufacturer or authorized distributors?
All TLC2254AIN 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 TLC2254AIN meets industry standards.
7.What is the process for return or replacement of TLC2254AIN?
All TLC2254AIN units undergo pre-shipment inspection (PSI). If there is an issue with TLC2254AIN, 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 TLC2254AIN part is unused and in its original packaging.
Return procedure for TLC2254AIN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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