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Texas Instruments TLC27L4IN
- Part No.:
- TLC27L4IN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC27L4IN.pdf
- Description:
- IC CMOS 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
TLC27L4IN from Texas Instruments is a precision quad operational amplifier using LinCMOS™ technology, designed for low-power, single-supply sensor signal conditioning. It delivers 10 mV max input offset voltage (25°C), ultra-low 68 µA typical supply current (VDD = 5 V), and rail-to-rail output swing down to the negative rail - enabling use in battery-powered field transmitters and smoke detectors.
For engineers reviewing the TLC27L4IN datasheet, TLC27L4IN pinout, TLC27L4IN application, or TLC27L4IN equivalent, this page provides verified specifications, validated pin functions, confirmed operating conditions (–40°C to +85°C), and real-world design context for analog front-end integration in industrial sensing systems.
Technical Context
The TLC27L4IN implements silicon-gate LinCMOS™ process architecture, delivering high input impedance (10¹² Ω) and sub-picoampere input bias current (0.6 pA typ at 25°C) while avoiding bipolar power penalties. Its input stage supports common-mode voltage down to –0.2 V (with VDD = 5 V), enabling true single-supply operation with ground-referenced inputs.
It features internal ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.2) and latch-up immunity. The device exhibits stable unity-gain bandwidth (85 kHz at VDD = 5 V, 25°C) and phase margin of 34°, supporting robust closed-loop performance in active filtering and transducer interfacing without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIO max | 10 mV at 25°C - sets worst-case DC error budget in precision gain stages |
| IDD typ | 68 µA at VDD = 5 V, 25°C - enables multi-year operation on coin-cell batteries |
| VICR | –0.2 V to 3.5 V (VDD = 5 V) - allows direct interface with 0 V-referenced sensors |
| AVD min | 50 V/mV - ensures ≥80 dB open-loop gain for accurate closed-loop gain setting |
| CMRR min | 65 dB - suppresses common-mode noise from shared power rails or long cables |
| SR typ | 0.03 V/µs - supports <10 kHz small-signal bandwidth in unity-gain buffer configurations |
| B1 typ | 85 kHz - defines maximum usable frequency for gain-of-100 amplification |
Pinout & Package
The TLC27L4IN is packaged in a 14-pin PDIP (Plastic Dual In-line Package), through-hole compatible with standard PCB assembly and prototyping workflows.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1IN+, 2IN+, 3IN+, 4IN+ | Noninverting input (x4) | Accepts high-impedance sensor signals; supports rail-to-rail common-mode range |
| 1IN–, 2IN–, 3IN–, 4IN– | Inverting input (x4) | Enables precision differential, inverting, or integrator topologies with minimal bias current error |
| 1OUT, 2OUT, 3OUT, 4OUT | Output (x4) | Drives loads up to ±30 mA; output swings to GND and within 0.9 V of VDD |
| GND (Pin 11) | Ground reference | Serves as negative supply rail and analog reference point for all four amplifiers |
| VDD (Pin 4) | Positive supply | Accepts 4 V to 16 V - supports wide-input industrial supplies and battery decay |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 68 µA total supply current (4 op amps) at 5 V - extends battery life in remote sensors |
| Rail-to-rail output swing | Output reaches GND and within 0.9 V of VDD - maximizes dynamic range in single-supply systems |
| High input impedance | 10¹² Ω typical - prevents loading of high-Z sources like thermistors and piezoelectric sensors |
| ESD protection | 2000 V HBM rating - reduces handling sensitivity and improves manufacturing yield |
| Latch-up immunity | Designed-in robustness against transient-induced parasitic conduction - enhances system reliability |
Applications
| Smoke and Heat Detector | Pressure Transmitter |
|---|---|
Use Scenario: Detects minute ionization or thermal changes in residential/commercial fire alarm systems. IC Role / Device Role / Timing Role: Quad amplifier configures dual-channel signal conditioning: one pair for sensor biasing and filtering, another for comparator reference generation. Use Value: Low input bias current avoids leakage-induced drift in high-impedance smoke chamber circuits; 10 mV VIO ensures stable threshold detection over temperature. | Use Scenario: Converts bridge output from MEMS or strain-gauge pressure sensors into standardized 4–20 mA or 0–5 V output. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier (using two op amps), followed by output driver and reference buffer (remaining two). Use Value: Rail-to-rail output enables full-scale utilization of 5 V ADC references; 85°C operating range supports harsh industrial enclosures. |
| Temperature Transmitter | Motion Detector |
Use Scenario: Interfaces RTD or thermistor in HVAC or process control loop transmitters. IC Role / Device Role / Timing Role: Precision current source excitation (1 op amp), ratiometric gain stage (1), cold-junction compensation buffer (1), and output line driver (1). Use Value: 0.1 µV/month VIO drift minimizes calibration drift over years; –40°C to +85°C rating covers outdoor deployment. | Use Scenario: Amplifies weak pyroelectric (PIR) sensor signals in security lighting and occupancy controls. IC Role / Device Role / Timing Role: High-gain AC-coupled preamplifier (2 op amps), active bandpass filter (1), and window comparator input buffer (1). Use Value: Ultra-low power enables solar/battery operation; input common-mode range extending below GND accommodates AC-coupled PIR outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC27L4CD | SOIC-14 package; 0°C to 70°C temp range; identical electrical specs | Surface-mount assembly only; unsuitable for through-hole prototyping or high-temp environments | Select when board space is constrained and ambient temperature stays ≤70°C |
| LM324N | Bipolar input; 2000 µV VIO max; 1.2 mA IDD; no rail-to-rail output | Higher power, lower precision, wider supply range (3–32 V); less suitable for low-voltage battery systems | Select only for cost-sensitive, non-precision applications where VIO > 5 mV is acceptable |
Compared with TLC27L4CD, the TLC27L4IN offers identical analog performance but adds through-hole compatibility and extended industrial temperature support; versus LM324N, it delivers 200× lower input offset voltage and 18× lower quiescent current - critical for precision, low-power sensing nodes.
Availability
TLC27L4IN is available at Aetrix Electronics and suitable for field transmitter, smoke detector, and temperature transmitter designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC27L4IN 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 amp innovation.
The TLC27Lx family was engineered for low-power, high-accuracy sensor signal conditioning in industrial and safety-critical monitoring systems - emphasizing stability, ESD robustness, and single-supply operability.
FAQ
What is the maximum operating temperature for the TLC27L4IN?
The TLC27L4IN is characterized for continuous operation from –40°C to +85°C. This I-suffix rating makes it suitable for industrial environments such as outdoor pressure transmitters or factory-floor motion detectors where ambient temperatures exceed commercial-grade limits. Electrical parameters like input offset voltage and supply current are guaranteed across this full range per the datasheet's Section 5.8–5.11.
Does the TLC27L4IN support true single-supply operation with inputs referenced to ground?
Yes. The TLC27L4IN features a common-mode input voltage range extending to –0.2 V (with VDD = 5 V), allowing its inputs to operate at or slightly below ground potential. This enables direct connection to 0 V-referenced sensors like thermocouples or resistive bridges without level-shifting circuitry - a key enabler for simplified, low-component-count analog front ends in the TLC27L4IN design.
What is the typical supply current for the TLC27L4IN at 5 V?
The TLC27L4IN draws 68 µA typical supply current (four amplifiers combined) at VDD = 5 V and TA = 25°C, per Section 5.4 of the datasheet. At –40°C, current rises to 62 µA (min), and at +85°C, it drops to 29 µA (min). This ultra-low IDD enables multi-year operation from primary lithium batteries in remote sensing nodes - a defining specification for the TLC27L4IN in energy-constrained applications.
Can the TLC27L4IN drive capacitive loads without instability?
The TLC27L4IN exhibits a phase margin of 34° at 25°C with 20 pF load (Section 5.5), indicating conditional stability. For loads >100 pF, external compensation (e.g., series resistor at output) is recommended. Figure 5-29 in the datasheet shows phase margin degrading to ~25° at 500 pF - confirming that the TLC27L4IN is not unity-gain stable into heavy capacitive loads without mitigation, unlike some modern rail-to-rail op amps.
Is the TLC27L4IN pin-compatible with other TLC27Lx variants?
Yes - all TLC27Lx quad op amps (including TLC27L4IN, TLC27L4CD, TLC27L4AI, and TLC27L9IN) share identical 14-pin PDIP/SOIC/SOP/TSSOP footprints and pin functions per Table 4-1. This allows direct substitution within the same package type to upgrade precision (e.g., from TLC27L4IN to TLC27L4BIN) or change temperature grade without PCB redesign - a verified mechanical and functional compatibility of the TLC27L4IN family.
TLC27L4IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.05V/µs
- Gain Bandwidth Product:
- 110 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.7 pA
- Voltage - Input Offset:
- 1.1 mV
- Current - Supply:
- 57µA (x4 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TLC27L4IN FAQ
1.How can I place an order for TLC27L4IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27L4IN 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 TLC27L4IN reliable?
The price and inventory of TLC27L4IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27L4IN is usually 5 days.
3.What payment methods are accepted for TLC27L4IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27L4IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27L4IN?
TLC27L4IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27L4IN 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 TLC27L4IN?
For technical support, including TLC27L4IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27L4IN requirements.
6.How does Aetrix verify that TLC27L4IN is sourced from the original manufacturer or authorized distributors?
All TLC27L4IN 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 TLC27L4IN meets industry standards.
7.What is the process for return or replacement of TLC27L4IN?
All TLC27L4IN units undergo pre-shipment inspection (PSI). If there is an issue with TLC27L4IN, 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 TLC27L4IN part is unused and in its original packaging.
Return procedure for TLC27L4IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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