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Texas Instruments TLC25L4CN
- Part No.:
- TLC25L4CN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC25L4CN.pdf
- Description:
- IC CMOS 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,102
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Product details
Overview
TLC25L4CN from Texas Instruments is a LinCMOS™ quad operational amplifier optimized for ultra-low-power, single-supply operation down to 1.4 V, with 40 µA typical supply current (four amplifiers), 2 mV max input offset voltage (B-grade), and rail-to-rail common-mode input range extending to the negative rail. It serves as a precision, low-bias signal conditioner in battery-powered sensor interfaces and portable instrumentation.
For engineers reviewing the TLC25L4CN datasheet, TLC25L4CN pinout, TLC25L4CN application, or TLC25L4CN equivalent, this device is selected for energy-constrained analog front-ends requiring high input impedance (>1 TΩ), sub-picoampere bias current, and stable DC performance across 0°C to 70°C.
Technical Context
The TLC25L4CN implements a silicon-gate LinCMOS™ process architecture, delivering picoampere-level input bias and offset currents with exceptional DC stability-typical IIB = 0.6 pA and IIO = 0.1 pA at 25°C. Its input stage supports true single-supply operation with VICR spanning from VDD–/GND to within 0.2 V of VDD.
It features unity-gain stability, 85 kHz typical unity-gain bandwidth (VDD = 5 V), and 70 nV/√Hz input-referred noise at 1 kHz-optimized for low-frequency precision rather than high-speed signal processing. The device is not internally compensated for capacitive loads beyond 20 pF without external isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4 V to 16 V - enables direct use with single alkaline, lithium coin cell, or low-dropout regulator outputs. |
| Input Offset Voltage (Max) | 2 mV - ensures ≤2 mV DC error in 1× gain configurations without trimming, critical for microvolt-level sensor signal conditioning. |
| Supply Current (Typ, 4 amps) | 40 µA at VDD = 5 V - allows continuous operation for years on a CR2032 battery in always-on monitoring nodes. |
| Input Bias Current (Typ) | 0.6 pA at 25°C - preserves signal integrity in high-impedance pH, photodiode, or piezoelectric transducer circuits. |
| Common-Mode Input Range | Includes VDD–/GND - permits direct interfacing with ground-referenced sensors without level-shifting circuitry. |
| Unity-Gain Bandwidth (Typ) | 85 kHz at VDD = 5 V - sufficient for anti-aliasing, low-pass filtering, and DC-coupled instrumentation up to audio frequencies. |
| Input Noise Voltage (Typ) | 70 nV/√Hz at f = 1 kHz - suitable for millivolt-level thermocouple or strain gauge amplification with minimal added noise. |
Pinout & Package
Package: 14-pin plastic DIP (N package), through-hole mount, 0°C to 70°C operating temperature range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Amplifier 1 output | Provides buffered, low-impedance output for driving 1 MΩ loads or cascading to next stage. |
| 1IN– | Amplifier 1 inverting input | Differential input node; accepts feedback network for closed-loop gain configuration. |
| 1IN+ | Amplifier 1 non-inverting input | High-impedance sensing node; compatible with high-Z sources like thermistors or bridge sensors. |
| VDD | Positive supply rail | Single positive supply connection; no separate VDD+ and VDD– required for basic operation. |
| 2IN+ | Amplifier 2 non-inverting input | Independent input for second channel; shares same VDD and VDD–/GND rails. |
| 2IN– | Amplifier 2 inverting input | Configurable for differential or inverting gain; electrically isolated per channel. |
| 2OUT | Amplifier 2 output | Output of second op-amp; usable for dual-channel signal conditioning or active filtering. |
| 4OUT | Amplifier 4 output | Final channel output; pin 14 is dedicated to Amp 4 output, enabling four independent functions. |
| 4IN– | Amplifier 4 inverting input | Supports multi-stage filtering or summing configurations without external interconnects. |
| 4IN+ | Amplifier 4 non-inverting input | Enables independent sensor interface per channel; all inputs referenced to common GND. |
| VDD–/GND | Ground / negative supply | Reference node for all inputs and outputs; tied directly to system ground in single-supply mode. |
| 3IN+ | Amplifier 3 non-inverting input | Third channel input; layout symmetry supports matched trace routing for balanced designs. |
| 3OUT | Amplifier 3 output | Third independent output; usable for reference buffering, bias generation, or auxiliary signal path. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 40 µA total for four amplifiers - extends battery life in portable medical monitors and IoT edge nodes. |
| Rail-to-rail input common-mode range | Extends to VDD–/GND - eliminates need for input biasing resistors in single-supply transducer interfaces. |
| Picoampere input bias current | 0.6 pA typical - prevents loading errors in megohm-range sensor networks and electrochemical cells. |
| Low input offset voltage grade | 2 mV max (B-suffix) - reduces calibration burden in factory-trimmed industrial analog modules. |
| ESD protection | 2000 V HBM - improves robustness during PCB handling and assembly without external protection diodes. |
Applications
| Portable Gas Sensor Interface | Low-Power ECG Front-End |
|---|---|
Use Scenario: Amplifying nanoamp-level current from electrochemical gas sensors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Precision transimpedance amplifier and DC-coupled signal conditioner for analog front-end. Use Value: 0.6 pA input bias avoids sensor current loss; 40 µA quiescent current enables >5-year operation on CR2032. |
Use Scenario: Biopotential acquisition in wearable heart-rate monitors with single 3.3 V supply. IC Role / Device Role / Timing Role: Instrumentation amplifier input stage and right-leg drive buffer. Use Value: Rail-to-rail input accommodates electrode offset voltages; 2 mV VIO ensures <1% gain error in 100× gain paths. |
| Remote Temperature Node | Industrial RTD Signal Chain |
Use Scenario: Battery-operated wireless node measuring PT1000 via constant-current excitation. IC Role / Device Role / Timing Role: Low-drift difference amplifier and filter driver for ADC input. Use Value: 1.1 µV/°C offset drift minimizes temperature-induced calibration drift over 0–70°C range. |
Use Scenario: 4-wire RTD measurement in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Precision current-source buffer and ratiometric reference amplifier. Use Value: 70 nV/√Hz noise floor maintains 16-bit effective resolution when paired with 24-bit ΣΔ ADC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad low-power op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6004-E/P | Higher supply current (1 µA/amp), wider VDD range (1.8–6 V), no 1.4 V operation | Not suitable for sub-1.8 V battery systems; better for 3.3 V digital-centric designs | Select if 3.3 V supply and higher speed (1 MHz GBW) are prioritized over ultra-low power |
| LMV324IDR | Higher input bias (10 nA), lower VIO grade (3 mV max), rail-to-rail output only | Lacks rail-to-rail input; requires input biasing network for ground-referenced sensors | Choose when cost sensitivity outweighs precision and single-supply simplicity requirements |
Compared with MCP6004-E/P and LMV324IDR, the TLC25L4CN uniquely supports 1.4 V operation and delivers picoampere bias current-making it irreplaceable in ultra-low-voltage, high-impedance analog sensing where power and DC accuracy are co-constrained.
Availability
TLC25L4CN is available at Aetrix Electronics and suitable for portable medical devices, battery-powered environmental sensors, and industrial data loggers requiring stable component supply across long production lifecycles.
Supply support for TLC25L4CN 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 low-power innovation.
The TLC25L4CN belongs to TI's LinCMOS™ precision op-amp family, designed specifically for single-supply, low-voltage, high-input-impedance applications in portable and energy-harvesting systems.
FAQ
What is the minimum supply voltage supported by the TLC25L4CN?
The TLC25L4CN operates down to 1.4 V, verified per the SLOS003G datasheet absolute maximum and recommended operating conditions. This enables direct compatibility with partially discharged alkaline cells and emerging low-voltage energy harvesting sources. Operation below 1.4 V is not characterized and may result in degraded CMRR, reduced output swing, or instability.
Does the TLC25L4CN support true rail-to-rail input operation?
Yes, the TLC25L4CN features a common-mode input voltage range that includes the negative rail (VDD–/GND), confirmed in the "recommended operating conditions" table for all supply voltages (1.4 V to 16 V). At VDD = 5 V, VICR spans –0.2 V to 4 V - allowing ground-referenced signals without external level shifting.
What is the input offset voltage specification for the TLC25L4CN?
The TLC25L4CN is the B-grade variant, with a maximum input offset voltage of 2 mV at 25°C and 3 mV across the full 0°C to 70°C temperature range. Typical VIO is 0.24 mV at 25°C (VDD = 5 V), and average temperature coefficient is 1.1 µV/°C - supporting stable DC performance in uncalibrated industrial modules.
Can the TLC25L4CN drive capacitive loads directly?
The TLC25L4CN is unity-gain stable but not optimized for heavy capacitive loads. Datasheet operating characteristics specify test conditions with CL = 20 pF. Driving >50 pF directly risks peaking or oscillation; a series resistor (e.g., 100 Ω) between output and load is recommended for CL > 20 pF to maintain phase margin ≥30°.
Is the TLC25L4CN pin-compatible with other devices in the TLC25xx family?
Yes, all TLC25x4 variants-including TLC254CN, TLC25L4CN, and TLC25M4CN-share identical 14-pin DIP (N) pinouts and footprint. Functional differences (bias current, slew rate, supply current) do not affect physical layout, enabling drop-in substitution where electrical specs align with design requirements.
TLC25L4CN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- Single-Ended
- Slew Rate:
- 0.04V/µs
- Gain Bandwidth Product:
- 110 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.6 pA
- Voltage - Input Offset:
- 1.1 mV
- Current - Supply:
- 2.7mA (x4 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 1.4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TLC25L4CN FAQ
1.How can I place an order for TLC25L4CN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC25L4CN 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 TLC25L4CN reliable?
The price and inventory of TLC25L4CN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC25L4CN is usually 5 days.
3.What payment methods are accepted for TLC25L4CN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC25L4CN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC25L4CN?
TLC25L4CN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC25L4CN 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 TLC25L4CN?
For technical support, including TLC25L4CN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC25L4CN requirements.
6.How does Aetrix verify that TLC25L4CN is sourced from the original manufacturer or authorized distributors?
All TLC25L4CN 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 TLC25L4CN meets industry standards.
7.What is the process for return or replacement of TLC25L4CN?
All TLC25L4CN units undergo pre-shipment inspection (PSI). If there is an issue with TLC25L4CN, 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 TLC25L4CN part is unused and in its original packaging.
Return procedure for TLC25L4CN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC25L4CN Tags
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