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Texas Instruments TLC27L4BCD
- Part No.:
- TLC27L4BCD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC27L4BCD.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,710
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Product details
Overview
TLC27L4BCD from Texas Instruments is a precision quad operational amplifier in SOIC-14 package, designed for low-power, single-supply sensor signal conditioning. It delivers 2 mV max input offset voltage (25°C), ultra-low 195 µW quiescent power at 5 V, and rail-to-rail output swing down to the negative rail - enabling accurate amplification in battery-powered field transmitters and smoke detectors.
For engineers reviewing the TLC27L4BCD datasheet, TLC27L4BCD pinout, TLC27L4BCD application, or TLC27L4BCD equivalent, this page provides verified electrical specs, validated pin functions, confirmed operating conditions (0°C to 70°C, 3–16 V), and real-world design context for analog front-end integration in industrial sensing systems.
Technical Context
The TLC27L4BCD uses TI's LinCMOS™ silicon-gate process to achieve high input impedance (10¹² Ω typical), sub-picoamp input bias current (0.6 pA typ at 25°C), and latch-up immunity - all while maintaining stable offset drift (0.1 µV/month). Its common-mode input range extends 0.2 V below ground, supporting true single-supply operation without level-shifting circuitry.
It features four independent op-amp channels with identical AC/DC performance: unity-gain bandwidth of 85 kHz (VDD = 5 V), slew rate of 0.03 V/µs, and phase margin of 34° - optimized for stable closed-loop operation with capacitive loads up to 20 pF and no external compensation required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (max) | 2 mV at 25°C - enables <1% error in 2 V full-scale sensor outputs without trimming |
| Supply Voltage Range | 3 V to 16 V - supports direct connection to 3.3 V, 5 V, or 12 V rails without regulators |
| Quiescent Supply Current | 68 µA (max, 4 amps) at 25°C - draws only 340 nA per amplifier, ideal for multi-year battery life |
| Input Bias Current (typ) | 0.6 pA at 25°C - minimizes voltage error across high-impedance sources like thermistors or pH electrodes |
| Common-Mode Input Range | –0.2 V to 3.5 V (VDD = 5 V) - accepts signals below ground, simplifying single-supply transducer interfacing |
| Output Voltage Swing | Within 50 mV of GND and within 0.9 V of VDD - delivers usable dynamic range in low-voltage systems |
| Unity-Gain Bandwidth | 85 kHz at VDD = 5 V - sufficient for DC–10 kHz sensor signals including pressure, temperature, and flow |
Pinout & Package
Package: SOIC-14 (D package), 8.65 mm × 3.91 mm, surface-mount, JEDEC MS-012 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1IN+, 2IN+, 3IN+, 4IN+ | Noninverting input (Ch 1–4) | High-impedance node (10¹² Ω) for reference or sensor signal routing; accepts voltages down to –0.2 V |
| 1IN–, 2IN–, 3IN–, 4IN– | Inverting input (Ch 1–4) | Differential input pair; matched for low offset and drift; supports feedback networks up to 10 MΩ |
| 1OUT, 2OUT, 3OUT, 4OUT | Amplifier output (Ch 1–4) | Capable of sourcing/sinking ±30 mA; drives 1 MΩ load with <50 mV headroom to rails |
| VDD | Positive supply | Single positive rail connection; supports 3–16 V; internal ESD protection rated to 2000 V |
| GND | Ground / negative rail | Reference for all inputs and outputs; common return path for all four amplifiers |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 195 µW total (4 amps @ 5 V) - extends battery life in remote field transmitters beyond 10 years |
| Rail-to-rail output capability | Swings within 50 mV of GND and 0.9 V of VDD - maximizes ADC utilization in 3.3 V systems |
| Input offset voltage stability | 0.1 µV/month drift (including first 30 days) - eliminates need for periodic recalibration in safety-critical detectors |
| ESD protection | 2000 V HBM (MIL-STD-883C, Method 3015.2) - withstands handling and board assembly without functional failure |
| Latch-up immunity | Designed-in robustness against transient-induced CMOS latch-up - ensures reliability in noisy industrial environments |
Applications
| Smoke and Heat Detector | Pressure Transmitter |
|---|---|
Use Scenario: Amplifying low-level ionization chamber or thermopile signals in residential/commercial fire alarms. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage for microvolt-level sensor outputs; operates from coin-cell or 3.3 V supply. Use Value: 2 mV VIO and 0.6 pA IIB prevent baseline shift over time, ensuring false-alarm immunity across 10+ year product lifetime. |
Use Scenario: Conditioning bridge output from piezoresistive pressure sensors in HVAC or process control systems. IC Role / Device Role / Timing Role: Instrumentation-grade amplifier with matched inputs for ratiometric bridge excitation and differential readout. Use Value: Common-mode input range extending below GND allows direct interface to grounded-sensor bridges without bias resistors. |
| Temperature Transmitter | Level Transmitter |
Use Scenario: Linearizing and scaling RTD or thermistor outputs for 4–20 mA loop-powered transmitters. IC Role / Device Role / Timing Role: Low-drift, low-power op-amp in analog signal chain preceding DAC or current-output stage. Use Value: 0.1 µV/month VIO drift ensures long-term calibration stability - critical for NIST-traceable industrial temperature measurement. |
Use Scenario: Signal conditioning for ultrasonic or capacitance-based liquid level sensors in tanks or silos. IC Role / Device Role / Timing Role: High-Z buffer and gain stage for high-impedance sensor elements exposed to moisture and wide temperature swings. Use Value: 10¹² Ω input impedance prevents loading of capacitive sensors; SOIC-14 package supports conformal coating for harsh environments. |
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 | Higher max VIO (10 mV vs 2 mV); otherwise identical SOIC-14 pinout, supply range, and power | Suitable for cost-sensitive, non-critical gain stages where 1% accuracy suffices | Select TLC27L4CD only when offset budget allows ≥10× higher VIO; not drop-in for precision sensor paths |
| TLV2464IDR | Rail-to-rail input/output; 600 µA per amp; 2.2 MHz GBW; VIO = 2.5 mV max - higher speed and power | Better for active filters or faster sensor loops (>100 kHz), but increases battery drain 17× | Choose TLV2464IDR only when bandwidth >100 kHz is required; avoid in ultra-low-power designs |
Compared with TLC27L4CD and TLV2464IDR, the TLC27L4BCD uniquely balances microamp-level quiescent current, sub-2-mV offset, and industrial temperature range - making it optimal for battery-operated, long-life sensor transmitters where precision and power are co-constrained.
Availability
TLC27L4BCD is available at Aetrix Electronics and suitable for smoke detector manufacturing, industrial field transmitter production, and battery-powered environmental monitoring systems requiring stable component supply across extended lifecycle commitments.
Supply support for TLC27L4BCD 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 decades of heritage in precision op-amp design and industrial-grade reliability.
The TLC27Lx family was engineered specifically for low-power, high-accuracy analog signal conditioning in battery-operated and remote industrial sensors - emphasizing offset stability, rail-compatible operation, and robustness over wide temperature ranges.
FAQ
What is the maximum operating temperature range for the TLC27L4BCD?
The TLC27L4BCD is characterized for operation from 0°C to +70°C (C-suffix grade). It supports supply voltages from 3 V to 16 V across this full range, with guaranteed performance for input offset voltage (≤3 mV), supply current (≤84 µA), and output swing (≥3 V into 1 MΩ) at 70°C.
Does the TLC27L4BCD support true single-supply operation with inputs referenced to ground?
Yes - the TLC27L4BCD's common-mode input voltage range extends to –0.2 V (at VDD = 5 V), allowing both inputs to be biased at or slightly below ground. This enables direct interface to grounded transducers without level-shifting circuitry, a key enabler for single-supply sensor front ends.
What is the typical input bias current of the TLC27L4BCD, and why does it matter for sensor applications?
The TLC27L4BCD has a typical input bias current of 0.6 pA at 25°C. This ultra-low value prevents significant voltage error across high-impedance sensor elements (e.g., pH electrodes or unbuffered thermistors), preserving signal integrity without requiring guard traces or active guarding techniques.
Can the TLC27L4BCD drive a 10 kΩ load while maintaining rail-to-rail output swing?
Yes - the TLC27L4BCD guarantees low-level output voltage ≤50 mV above GND and high-level output voltage ≥3.2 V (at VDD = 5 V) into a 1 MΩ load. Driving 10 kΩ degrades swing by <100 mV due to output impedance; for full rail-to-rail performance, keep load ≥100 kΩ or add a buffer stage.
Is the TLC27L4BCD pin-compatible with other devices in the TLC27Lx family?
Yes - all TLC27Lx quad op-amps (including TLC27L4CD, TLC27L4ACD, TLC27L4BCD, and TLC27L9CD) share identical SOIC-14 pinout, supply connections, and channel mapping. Only input offset voltage grade and temperature range differ; PCB layout is fully reusable across the family.
TLC27L4BCD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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):
- 3 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLC27L4BCD FAQ
1.How can I place an order for TLC27L4BCD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27L4BCD 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 TLC27L4BCD reliable?
The price and inventory of TLC27L4BCD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27L4BCD is usually 5 days.
3.What payment methods are accepted for TLC27L4BCD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27L4BCD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27L4BCD?
TLC27L4BCD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27L4BCD 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 TLC27L4BCD?
For technical support, including TLC27L4BCD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27L4BCD requirements.
6.How does Aetrix verify that TLC27L4BCD is sourced from the original manufacturer or authorized distributors?
All TLC27L4BCD 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 TLC27L4BCD meets industry standards.
7.What is the process for return or replacement of TLC27L4BCD?
All TLC27L4BCD units undergo pre-shipment inspection (PSI). If there is an issue with TLC27L4BCD, 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 TLC27L4BCD part is unused and in its original packaging.
Return procedure for TLC27L4BCD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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