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Texas Instruments TLC2254QDREP
- Part No.:
- TLC2254QDREP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2254QDREP.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,004
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Product details
Overview
TLC2254QDREP from Texas Instruments is a quad rail-to-rail output operational amplifier optimized for micropower, low-noise signal conditioning in battery-powered and high-impedance sensor interfaces. It delivers 19 nV/√Hz input voltage noise at 1 kHz, 1 pA typical input bias current, 35 µA per channel supply current, ±2.2 V to ±8 V dual-supply operation, and full rail-to-rail output swing - enabling direct interfacing with 12-bit ADCs in portable instrumentation.
For engineers reviewing the TLC2254QDREP datasheet, TLC2254QDREP pinout, TLC2254QDREP application, or TLC2254QDREP equivalent, this page provides verified electrical specifications, SOIC-14 package terminal mapping, real-world use cases in precision analog front-ends, and validated alternative options for extended-temperature industrial designs.
Technical Context
The TLC2254QDREP implements a CMOS-input, rail-to-rail output amplifier architecture with fully differential input stage and complementary push-pull output stage. Its design supports common-mode input voltage range extending to the negative rail and output swing within 10 mV of both supply rails under light load, ensuring maximum dynamic range in single- or split-supply configurations.
It features internal ESD protection exceeding 100 V (machine model), operates across −40°C to +125°C, and is characterized for both 5 V single-supply and ±5 V dual-supply conditions - with guaranteed performance on input offset voltage (≤1550 µV over temperature), CMRR (≥70 dB), and supply-voltage rejection ratio (≥80 dB).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±2.2 V to ±8 V - supports wide industrial dual-rail systems and battery-derived supplies. |
| Input Bias Current | 1 pA typ - enables accurate amplification of signals from piezoelectric, pH, or photodiode sensors without loading. |
| Input Voltage Noise | 19 nV/√Hz at 1 kHz - 4× lower than prior micropower CMOS op-amps, critical for low-level signal integrity. |
| Output Swing | Rail-to-rail - delivers full 0–5 V or ±4.8 V output range into 100 kΩ, minimizing headroom loss before ADC sampling. |
| Quiescent Current | 35 µA per channel (140 µA total) - extends battery life in handheld monitors and remote nodes. |
| Input Offset Voltage | 1550 µV max over −40°C to +125°C - specified for Q-suffix automotive/industrial grade reliability. |
| Common-Mode Range | Includes negative rail - allows direct sensing of ground-referenced transducer outputs without level-shifting. |
Pinout & Package
Package: SOIC-14 (D package), surface-mount, 8.65 mm × 3.91 mm body, 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - drives external load or ADC input with rail-to-rail capability. |
| 2 | IN−1 | Inverting input of Amp 1 - high-impedance node for feedback or differential configuration. |
| 3 | IN+1 | Non-inverting input of Amp 1 - accepts high-Z sensor signals with minimal error. |
| 4 | VDD+ | Positive supply rail - connects to +V supply; decoupling capacitor required near pin. |
| 5 | IN+2 | Non-inverting input of Amp 2 - independent channel for multi-sensor conditioning. |
| 6 | IN−2 | Inverting input of Amp 2 - supports dual-channel instrumentation amplifier topologies. |
| 7 | OUT2 | Amplifier 2 output - electrically isolated from OUT1; shares no internal coupling. |
| 8 | GND / VDD− | Ground or negative supply - serves as reference for all four amplifiers in single/dual supply modes. |
| 9 | OUT3 | Amplifier 3 output - enables 4-channel simultaneous signal processing in compact layout. |
| 10 | IN−3 | Inverting input of Amp 3 - identical electrical characteristics to IN−1/2/4. |
| 11 | IN+3 | Non-inverting input of Amp 3 - supports parallel sensor inputs or filter stages. |
| 12 | IN+4 | Non-inverting input of Amp 4 - dedicated input for fourth independent analog path. |
| 13 | IN−4 | Inverting input of Amp 4 - matches IN−1–3 in bias current, noise, and offset specs. |
| 14 | OUT4 | Amplifier 4 output - completes quad functionality; pin-compatible with TLC2254A variants. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 10 mV of VDD+ and VDD− at 50 µA load - preserves full ADC input range without external level-shifting. |
| Extended temperature grade | Qualified from −40°C to +125°C with HAST, temperature cycling, and intermetallic testing - suitable for under-hood or factory-floor deployment. |
| Low input voltage noise | 19 nV/√Hz at 1 kHz - reduces integrated noise floor in 10 Hz–10 kHz bandwidth applications like ECG front-ends. |
| Micropower operation | 35 µA per channel - enables >1-year battery life in coin-cell powered wireless sensor nodes operating at 100 Hz sampling. |
| High input impedance | 10¹² Ω differential and common-mode resistance - prevents signal attenuation when driving from >1 MΩ sources. |
Applications
| Piezoelectric Sensor Signal Conditioning | Portable Medical Instrumentation |
|---|---|
Use Scenario: Amplifying low-amplitude, high-impedance outputs from accelerometers or ultrasonic transducers in structural health monitoring. IC Role / Device Role / Timing Role: First-stage charge-to-voltage converter and gain stage with ultra-low input bias current to prevent signal decay. Use Value: 1 pA input bias current avoids RC time constant errors; rail-to-rail output ensures full utilization of 16-bit ADC input range. | Use Scenario: Front-end amplification for ECG, pulse oximetry, or glucose meter analog signal chains in handheld clinical devices. IC Role / Device Role / Timing Role: Low-noise, low-power biopotential amplifier with DC-coupled input and adjustable gain. Use Value: 19 nV/√Hz noise enables sub-µV signal resolution; 140 µA total quiescent current extends AA battery life beyond 18 months. |
| Industrial Process Monitoring | Automotive Cabin Environment Sensing |
Use Scenario: Signal conditioning for thermocouple, RTD, or gas sensor outputs in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Precision buffer and level-shifter between sensor and SAR ADC, operating across −40°C to +125°C ambient. Use Value: 1550 µV max input offset voltage over temperature ensures <0.1% gain error without calibration; SOIC-14 footprint simplifies thermal management. | Use Scenario: Occupancy detection via infrared pyroelectric sensors and CO₂ concentration measurement in HVAC control units. IC Role / Device Role / Timing Role: High-Z interface for passive IR detectors and low-drift amplifier for NDIR optical sensor front-ends. Use Value: Common-mode input range including negative rail allows direct connection to grounded sensor elements; qualified Q-grade ensures AEC-Q100 alignment. |
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 |
|---|---|---|---|
| TLC2254AQDREP | Lower max input offset voltage (850 µV vs. 1550 µV at 25°C); same package, pinout, and temperature range. | Better suited for precision DC-coupled applications requiring <0.01% offset-induced error. | Select TLC2254AQDREP when system-level offset calibration is impractical and tighter initial accuracy is mandatory. |
| TLV2444QDR | Higher supply current (160 µA/channel), wider GBW (1.8 MHz), but only rated to 105°C (not 125°C). | Preferred for higher-speed sensor interfaces (e.g., active filtering at >10 kHz) where temperature range is less extreme. | Choose TLV2444QDR when bandwidth >100 kHz is needed and ambient temperature stays below 105°C. |
Compared with TLC2254AQDREP, the TLC2254QDREP trades initial offset accuracy for broader availability and cost efficiency in non-critical DC applications; versus TLV2444QDR, it offers superior temperature robustness and lower power at the expense of speed - making it optimal for long-life, wide-temperature embedded analog front-ends.
Availability
TLC2254QDREP is available at Aetrix Electronics and suitable for industrial process monitoring, automotive cabin sensing, and portable medical instrumentation requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TLC2254QDREP 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, embedded processing, and connectivity technologies with over 90 years of innovation in precision analog design.
The TLC225x family was engineered for micropower, rail-to-rail output precision amplification in harsh-environment applications - targeting battery-operated instrumentation, industrial sensors, and automotive subsystems demanding reliability from −40°C to +125°C.
FAQ
What is the maximum operating temperature range for the TLC2254QDREP?
The TLC2254QDREP is qualified for continuous operation from −40°C to +125°C ambient temperature. This extended temperature rating is achieved through JEDEC-compliant qualification including HAST, temperature cycling, and intermetallic life testing - confirming suitability for under-hood automotive and factory-floor industrial deployments where thermal stress is severe.
Does the TLC2254QDREP support single-supply operation?
Yes, the TLC2254QDREP is fully specified for single-supply operation, with common-mode input voltage range extending to the negative rail (GND) and rail-to-rail output swing. When operated from a 5 V supply, it accepts inputs from 0 V to 3.5 V and delivers outputs from 10 mV to 4.98 V at light load - enabling direct interfacing with microcontroller ADCs without level-shifting circuitry.
What is the input offset voltage specification for the TLC2254QDREP over temperature?
The TLC2254QDREP has a maximum input offset voltage of 1550 µV across the full −40°C to +125°C operating range. At 25°C, the typical value is 200 µV with a maximum of 1500 µV. Its temperature coefficient is 0.5 µV/°C, meaning drift contributes ≤0.5 µV per degree Celsius change - critical for uncalibrated DC-coupled sensor interfaces.
How does the noise performance of the TLC2254QDREP compare to legacy micropower op-amps?
The TLC2254QDREP delivers 19 nV/√Hz input voltage noise at 1 kHz - approximately four times lower than earlier micropower CMOS op-amps like the TLC27L4. This reduction directly improves signal-to-noise ratio in low-frequency applications such as thermocouple amplification or piezoelectric vibration sensing, where integrated noise dominates system resolution.
Is the TLC2254QDREP pin-compatible with other members of the TLC225x family?
Yes, the TLC2254QDREP is pin-compatible with TLC2254AQDREP, TLC2254IDR, and TLC2254AIDR in the SOIC-14 (D) package. All share identical pinout, footprint, and electrical interface - allowing drop-in substitution where offset voltage or temperature grade requirements differ, without PCB redesign.
TLC2254QDREP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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 (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLC2254QDREP FAQ
1.How can I place an order for TLC2254QDREP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2254QDREP 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 TLC2254QDREP reliable?
The price and inventory of TLC2254QDREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2254QDREP is usually 5 days.
3.What payment methods are accepted for TLC2254QDREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2254QDREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2254QDREP?
TLC2254QDREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2254QDREP 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 TLC2254QDREP?
For technical support, including TLC2254QDREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2254QDREP requirements.
6.How does Aetrix verify that TLC2254QDREP is sourced from the original manufacturer or authorized distributors?
All TLC2254QDREP 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 TLC2254QDREP meets industry standards.
7.What is the process for return or replacement of TLC2254QDREP?
All TLC2254QDREP units undergo pre-shipment inspection (PSI). If there is an issue with TLC2254QDREP, 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 TLC2254QDREP part is unused and in its original packaging.
Return procedure for TLC2254QDREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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