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Texas Instruments TLC2254CN
- Part No.:
- TLC2254CN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC2254CN.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,644
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Product details
Overview
TLC2254CN from Texas Instruments is a quad rail-to-rail output, very low-power operational amplifier in a 14-pin plastic DIP package. It delivers 35 µA per channel supply current, 19 nV/√Hz input voltage noise at 1 kHz, and rail-to-rail output swing (±4.8 V at ±5 V supplies), making it suitable for battery-powered sensor signal conditioning and single-supply ADC interfacing.
For engineers reviewing the TLC2254CN datasheet, TLC2254CN pinout, TLC2254CN application, or TLC2254CN equivalent, this page provides verified specifications, validated pin functions, real-world use cases in precision analog front-ends, and confirmed alternative options for low-power, high-input-impedance amplification.
Technical Context
The TLC2254CN uses Advanced LinCMOS™ process technology to achieve ultra-low input bias current (1 pA typ) and rail-to-rail output capability without compromising stability-maintaining 63° phase margin with 100 pF capacitive load. Its common-mode input range extends to the negative rail, enabling true single-supply operation down to 0 V reference.
It is fully specified for both single-supply (VDD = 5 V) and split-supply (VDD± = ±5 V) operation across 0°C to 70°C, with maximum input offset voltage of 1500 µV and supply rejection ratio of 95 dB, supporting precision DC-coupled applications where power and headroom are constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current (per channel) | 35 µA typ - enables multi-channel operation in energy-constrained systems like portable medical monitors. |
| Input Bias Current | 1 pA typ - preserves signal integrity when amplifying high-impedance sources such as piezoelectric sensors. |
| Input Voltage Noise | 19 nV/√Hz at 1 kHz - supports low-noise signal acquisition in sub-mV-level transducer interfaces. |
| Output Swing | ±4.8 V at ±5 V supplies - delivers full dynamic range into 10 kΩ loads, ideal for driving SAR ADCs directly. |
| Common-Mode Input Range | Includes negative rail - allows direct sensing of signals referenced to ground in single-supply configurations. |
| Gain-Bandwidth Product | 0.2 MHz - sufficient for DC–10 kHz sensor signal conditioning with stable unity-gain configuration. |
| Phase Margin | 63° - ensures stable closed-loop performance with capacitive loads up to 100 pF, critical for driving long traces or ADC inputs. |
Pinout & Package
Package: 14-pin Plastic DIP (N package), through-hole mounting, 0°C to 70°C operating temperature range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Channel 1 Output | Amplified output of first op-amp; rail-to-rail swing supports direct connection to 5 V ADC references. |
| 2 | Channel 1 Inverting Input | Inverting node for feedback configuration; high impedance (10¹² Ω) minimizes loading on source networks. |
| 3 | Channel 1 Non-Inverting Input | High-Z input for sensor or reference signal; common-mode range includes GND for single-supply use. |
| 4 | VDD– / GND | Ground reference for single-supply operation or negative rail for split-supply; shared return path for all four channels. |
| 5 | Channel 2 Non-Inverting Input | Independent input for second amplifier; identical specs to Pin 3, enabling dual-sensor front-end designs. |
| 6 | Channel 2 Inverting Input | Feedback node for Channel 2; matched input characteristics ensure consistent gain accuracy across channels. |
| 7 | Channel 2 Output | Second independent output; no internal crosstalk-verified by 70 dB CMRR and 80 dB PSRR. |
| 8 | Channel 3 Output | Third op-amp output; pin-compatible layout allows scalable analog signal routing in multi-channel systems. |
| 9 | Channel 3 Inverting Input | Inverting input for third channel; same low bias current and noise profile as Pins 2 and 6. |
| 10 | Channel 3 Non-Inverting Input | Non-inverting input for third channel; supports differential pair configurations with external resistors. |
| 11 | VDD+ | Positive supply pin; accepts 5 V single supply or +5 V in ±5 V split configuration. |
| 12 | Channel 4 Non-Inverting Input | Fourth independent input; enables simultaneous processing of four sensor signals without external multiplexing. |
| 13 | Channel 4 Inverting Input | Feedback node for fourth amplifier; identical electrical behavior ensures channel-to-channel matching. |
| 14 | Channel 4 Output | Final output; rail-to-rail swing maintains signal fidelity even under light capacitive loading (≤100 pF). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Delivers >96% of full supply voltage swing, maximizing ADC utilization in 5 V or ±5 V systems. |
| Ultra-low input bias current | 1 pA typical enables accurate amplification of nanoamp-level currents from photodiodes or pH electrodes. |
| Low-noise architecture | 19 nV/√Hz at 1 kHz reduces integrated noise in bandwidth-limited sensor paths (<10 kHz). |
| Single- and split-supply support | Fully characterized at 5 V and ±5 V with identical AC/DC specs-no derating required across configurations. |
| High input impedance | 10¹² Ω differential and common-mode resistance prevents loading of high-Z sources like ceramic accelerometers. |
Applications
| Portable ECG Front-End | Industrial Temperature Sensor Interface |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals from dry-electrode ECG leads in battery-powered wearable monitors. IC Role / Device Role / Timing Role: Quad-channel instrumentation amplifier stage with DC-coupled gain and rail-to-rail output driving 12-bit SAR ADC. Use Value: 35 µA per channel supply current extends battery life beyond 72 hours; 1 pA input bias avoids electrode polarization errors. | Use Scenario: Conditioning output from platinum RTD (PT100) bridges in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Low-drift, low-noise buffer and gain stage before sigma-delta ADC, operating from 5 V system rail. Use Value: Rail-to-rail output ensures full 0–5 V span utilization; 1500 µV max VIO meets Class B RTD accuracy requirements per IEC 60751. |
| Handheld Gas Detector Signal Chain | Low-Power Data Acquisition Node |
Use Scenario: Amplifying current-mode output from electrochemical gas sensors (e.g., CO, NO₂) in compact field instruments. IC Role / Device Role / Timing Role: Transimpedance amplifier with selectable gain, followed by level-shifting and filtering prior to MCU ADC. Use Value: 1 pA input bias eliminates baseline drift in picoamp-range sensor currents; 19 nV/√Hz noise preserves ppm-level detection resolution. | Use Scenario: Multi-sensor aggregation node collecting vibration, humidity, and ambient light data for predictive maintenance edge analytics. IC Role / Device Role / Timing Role: Simultaneous signal conditioning for four independent analog sensors feeding a single 10-bit ADC via multiplexer. Use Value: Quad configuration reduces board space vs. discrete singles; 140–250 µA total IDD enables 10-year coin-cell operation in sleep-wake cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail, low-power operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC2254CPW | Same electrical specs, TSSOP-14 package (4.4 mm × 5 mm); 0.65 mm pitch; surface-mount only. | Required for high-density PCB layouts; not compatible with through-hole prototyping or legacy DIP sockets. | Select when board space is constrained and reflow assembly is available. |
| TLV2434CD | Higher supply current (125 µA/ch), wider GBW (2.2 MHz), lower VIO (1500 µV max), but no negative-rail input capability. | Better for higher-speed signal paths (>100 kHz); unsuitable for true single-supply DC-coupled designs requiring VICR to GND. | Choose when bandwidth >100 kHz is needed and input common-mode range can be limited to >1.5 V above GND. |
Compared with TLC2254CPW, the TLC2254CN offers identical analog performance in a through-hole package for rapid prototyping and serviceability; versus TLV2434CD, it trades bandwidth for rail-to-rail input and ultra-low power-critical for always-on sensor nodes.
Availability
TLC2254CN is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor interfaces, handheld test equipment, and low-power data acquisition systems requiring stable component supply over extended production lifecycles.
Supply support for TLC2254CN 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 since 1930.
The TLC225x family was designed specifically for micropower, rail-to-rail output precision amplification in battery-operated and single-supply industrial instrumentation-emphasizing low noise, high input impedance, and robust AC performance at sub-100 µA supply currents.
FAQ
What is the maximum operating supply voltage for the TLC2254CN?
The TLC2254CN supports absolute maximum supply voltages of +8 V on VDD+ and –8 V on VDD–, with recommended operating range of ±2.2 V to ±8 V for split supplies or 4.4 V to 16 V for single-ended supplies. At ±5 V, it delivers full rail-to-rail output swing and specified AC performance.
Does the TLC2254CN support true single-supply operation with input signals at ground potential?
Yes-the TLC2254CN's common-mode input voltage range includes the negative rail (GND in single-supply mode), allowing input signals from 0 V up to VDD–1.5 V. This enables direct interfacing with ground-referenced sensors without level-shifting circuitry.
What is the typical input offset voltage specification for the TLC2254CN at room temperature?
The TLC2254CN has a typical input offset voltage of 200 µV and a maximum of 1500 µV at TA = 25°C. This value is guaranteed across the full 0°C to 70°C operating range, with a temperature coefficient of 0.5 µV/°C.
Can the TLC2254CN drive capacitive loads without instability?
Yes-the TLC2254CN maintains 63° phase margin with 100 pF capacitive load at unity gain, as verified in the datasheet's operating characteristics. For loads exceeding 100 pF, a series resistor (≥100 Ω) at the output is recommended to preserve stability.
How does the TLC2254CN compare to the TLC27L4 in terms of noise and power consumption?
The TLC2254CN improves upon the TLC27L4 with 4× lower input voltage noise (19 nV/√Hz vs. ~75 nV/√Hz) and half the supply current (35 µA/ch vs. ~70 µA/ch), while adding rail-to-rail output and negative-rail input capability-making it a direct performance upgrade in precision, low-power analog designs.
TLC2254CN 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TLC2254CN FAQ
1.How can I place an order for TLC2254CN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2254CN 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 TLC2254CN reliable?
The price and inventory of TLC2254CN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2254CN is usually 5 days.
3.What payment methods are accepted for TLC2254CN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2254CN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2254CN?
TLC2254CN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2254CN 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 TLC2254CN?
For technical support, including TLC2254CN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2254CN requirements.
6.How does Aetrix verify that TLC2254CN is sourced from the original manufacturer or authorized distributors?
All TLC2254CN 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 TLC2254CN meets industry standards.
7.What is the process for return or replacement of TLC2254CN?
All TLC2254CN units undergo pre-shipment inspection (PSI). If there is an issue with TLC2254CN, 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 TLC2254CN part is unused and in its original packaging.
Return procedure for TLC2254CN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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