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Texas Instruments TLC25L4CD
- Part No.:
- TLC25L4CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC25L4CD.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:295
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Product details
Overview
TLC25L4CD from Texas Instruments is a LinCMOS™ quad operational amplifier optimized for ultra-low-power, single-supply operation down to 1.4 V. It delivers 40 µA typical supply current per amplifier, 2 mV maximum input offset voltage (B-grade), rail-to-rail common-mode input range including the negative rail, and 70 nV/√Hz input noise at 1 kHz - making it ideal for battery-powered sensor signal conditioning and portable medical instrumentation.
For engineers reviewing the TLC25L4CD datasheet, TLC25L4CD pinout, TLC25L4CD application, or TLC25L4CD equivalent, this page provides verified package mapping, confirmed low-bias operating characteristics, validated alternative options for precision analog front-ends, and design-critical ESD protection ratings up to 2000 V.
Technical Context
The TLC25L4CD implements a silicon-gate LinCMOS™ process enabling picoampere-level input bias and offset currents (1 pA typ), stable DC performance over temperature, and true single-supply functionality with input common-mode range extending to VDD–/GND. Its low-slew-rate architecture (0.03 V/µs typ at 5 V) prioritizes power efficiency over speed.
It operates across 0°C to 70°C and supports supply voltages from 1.4 V to 16 V. Internal ESD protection meets MIL-STD-883C Method 3015.1 (2000 V HBM), and the device is characterized for stability at unity gain with capacitive loads up to 20 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4 V to 16 V - enables direct operation from single alkaline, lithium coin cell, or low-dropout regulator outputs. |
| Input Offset Voltage (Max) | 2 mV - B-grade precision suitable for DC-coupled transducer interfaces without trimming. |
| Supply Current (Typ) | 40 µA per amplifier - total 160 µA for all four op-amps, enabling multi-channel sensing in energy-constrained systems. |
| Input Bias Current (Typ) | 1 pA - supports high-impedance sensor nodes (e.g., pH electrodes, piezoresistive bridges) without significant error. |
| Common-Mode Input Range | Includes VDD–/GND - allows direct interfacing with ground-referenced sensors and single-supply active filters. |
| Input Noise Density | 70 nV/√Hz at 1 kHz - appropriate for low-frequency biosignal amplification (ECG, EEG) where thermal noise dominates. |
Pinout & Package
Package: 14-pin SOIC (D package), surface-mount, tape-and-reel compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Channel 1 Output | Amplified output of first op-amp; capable of sourcing/sinking load current into 1 MΩ (low-bias configuration). |
| 2 | Channel 1 Inverting Input | Differential input node; high-impedance (1 pA bias) for precision feedback networks. |
| 3 | Channel 1 Non-Inverting Input | Differential input node; accepts signals down to VDD–/GND for true single-supply operation. |
| 4 | VDD | Positive supply rail; supports 1.4–16 V operation; decoupling capacitor required near pin. |
| 5 | Channel 2 Non-Inverting Input | Second op-amp input; identical electrical behavior to Pin 3. |
| 6 | Channel 2 Inverting Input | Second op-amp input; matched offset and bias specs to Pin 2. |
| 7 | Channel 2 Output | Output of second op-amp; electrically isolated from other channels. |
| 8 | Channel 3 Output | Third op-amp output; independent channel with same DC and AC specs. |
| 9 | Channel 3 Inverting Input | Third op-amp inverting input; shares B-grade offset spec (2 mV max). |
| 10 | Channel 3 Non-Inverting Input | Third op-amp non-inverting input; rail-to-rail common-mode capability. |
| 11 | VDD–/GND | Ground reference and negative supply terminal; must be connected to system ground plane. |
| 12 | Channel 4 Non-Inverting Input | Fourth op-amp input; fully specified across 0°C to 70°C temperature range. |
| 13 | Channel 4 Inverting Input | Fourth op-amp inverting input; matches input offset drift of 1 µV/°C (typ). |
| 14 | Channel 4 Output | Final op-amp output; supports same load conditions as Pins 1, 7, and 8. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends to VDD–/GND, eliminating need for level-shifting circuitry in single-supply designs. |
| Ultra-low input bias current | 1 pA typical enables use with >1 GΩ source impedances without measurable voltage error. |
| Low-voltage operation | Functional at 1.4 V supply allows integration into sub-1.8 V microcontroller subsystems. |
| B-grade precision | 2 mV max input offset voltage ensures <0.1% gain error in 2 V full-scale instrumentation amplifiers. |
| Integrated ESD protection | 2000 V HBM rating reduces need for external transient suppression in handheld devices. |
Applications
| Portable ECG Monitor Front-End | Low-Power Gas Sensor Signal Chain |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals from dry-electrode ECG sensors in wearable patches. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier buffer and anti-aliasing filter driver. Use Value: 1 pA input bias prevents electrode polarization drift; 2 mV VIO avoids baseline correction complexity in firmware. | Use Scenario: Conditioning resistive output from metal-oxide gas sensors in battery-operated air quality detectors. IC Role / Device Role / Timing Role: Transimpedance amplifier and offset-compensated differential receiver. Use Value: 1.4 V minimum supply enables direct connection to Li-SOCl₂ primary cells; rail-to-rail input captures full sensor swing. |
| Remote Industrial Temperature Node | Energy-Harvesting IoT Sensor Hub |
Use Scenario: Signal conditioning for Pt100 RTD bridges in wireless field transmitters powered by solar harvesters. IC Role / Device Role / Timing Role: Precision low-drift amplifier in 4-wire RTD measurement circuit. Use Value: 1 µV/°C offset drift minimizes calibration frequency; 40 µA per amp extends battery life to >5 years. | Use Scenario: Analog front-end for vibration, humidity, and light sensors in maintenance-free predictive maintenance nodes. IC Role / Device Role / Timing Role: Multi-channel sensor interface with shared reference and programmable gain. Use Value: Quad configuration reduces PCB area vs discrete solutions; 160 µA total quiescent current aligns with µW-level harvesting budgets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC25L4ACD | 5 mV max input offset voltage (A-grade), otherwise identical electrical specs and pinout. | Suitable where ±0.25% gain accuracy suffices and cost reduction is prioritized over tight DC matching. | Select when lower VIO tolerance is not required and BOM cost sensitivity outweighs precision needs. |
| TLV2464CD | Higher supply current (550 µA per amp), rail-to-rail output, 6.5 V/µs slew rate, 1.8–6 V supply range only. | Better for higher-speed, rail-to-rail output applications but incompatible below 1.8 V and consumes >13× more current. | Choose only if output swing to both rails is mandatory and system supply exceeds 1.8 V. |
Compared with TLC25L4ACD, the TLC25L4CD offers tighter input offset control (2 mV vs 5 mV) critical for DC-coupled measurements; versus TLV2464CD, it enables sub-1.8 V operation and cuts quiescent power by >95%, though at reduced bandwidth and no rail-to-rail output.
Availability
TLC25L4CD is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, energy-harvesting IoT endpoints, and battery-backed data loggers requiring stable component supply across long production lifecycles.
Supply support for TLC25L4CD 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, embedded processing, and connectivity solutions with deep expertise in low-power precision analog design.
The TLC25L4 series belongs to TI's LinCMOS™ operational amplifier product line, engineered specifically for ultra-low-power, single-supply, high-input-impedance applications in portable and remote sensing systems.
FAQ
What is the maximum supply voltage rating for the TLC25L4CD?
The TLC25L4CD has an absolute maximum supply voltage of 18 V, but its recommended operating range is 1.4 V to 16 V. Operation above 16 V risks exceeding internal junction temperature limits and may degrade long-term reliability, even if functional in short-term bench testing. Always observe derating curves in the dissipation rating table for the SOIC (D) package.
Does the TLC25L4CD support true rail-to-rail output swing?
No, the TLC25L4CD does not provide rail-to-rail output. Its output swing is limited to within approximately 0.2 V of the rails under light load (e.g., 1 MΩ). At 5 V supply, typical VOH is 4.1 V and VOL is 0 mV (with 50 mV max), meaning it reaches GND but not VDD. For full rail-to-rail output, consider alternatives like the TLV2464CD - though at significantly higher supply current.
How does the input offset voltage specification apply across temperature for the TLC25L4CD?
The TLC25L4CD (B-grade) guarantees ≤2 mV input offset voltage at 25°C and ≤3 mV across the full 0°C to 70°C operating range. Its typical offset voltage temperature coefficient is 1 µV/°C, meaning drift contributes <70 µV over the full range - negligible compared to the 2 mV initial tolerance. This stability is enabled by TI's LinCMOS™ process and makes the device suitable for uncalibrated DC measurement paths.
Can the TLC25L4CD drive capacitive loads without instability?
Yes, the TLC25L4CD is unity-gain stable with capacitive loads up to 20 pF when configured with appropriate feedback and layout practices. At 5 V supply, phase margin remains ≥34° (typ) with 20 pF load and 1 MΩ feedback resistor. For larger loads (>50 pF), isolation resistance or output buffering is recommended. Stability is confirmed in the datasheet's Figure 1 and operating characteristics tables.
Is the TLC25L4CD pin-compatible with other members of the TLC25xx family?
Yes, the TLC25L4CD is pin-compatible with all 14-pin SOIC variants in the TLC25x4 family, including TLC254CD, TLC25M4CD, TLC25L4ACD, and TLC25L4BCD. All share identical pinout, package dimensions, and footprint. Functional differences (e.g., bias current, slew rate, supply current) are grade- and variant-dependent but do not affect mechanical or electrical interconnection.
TLC25L4CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLC25L4CD FAQ
1.How can I place an order for TLC25L4CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC25L4CD 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 TLC25L4CD reliable?
The price and inventory of TLC25L4CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC25L4CD is usually 5 days.
3.What payment methods are accepted for TLC25L4CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC25L4CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC25L4CD?
TLC25L4CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC25L4CD 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 TLC25L4CD?
For technical support, including TLC25L4CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC25L4CD requirements.
6.How does Aetrix verify that TLC25L4CD is sourced from the original manufacturer or authorized distributors?
All TLC25L4CD 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 TLC25L4CD meets industry standards.
7.What is the process for return or replacement of TLC25L4CD?
All TLC25L4CD units undergo pre-shipment inspection (PSI). If there is an issue with TLC25L4CD, 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 TLC25L4CD part is unused and in its original packaging.
Return procedure for TLC25L4CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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