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Texas Instruments TLC27L2BCD
- Part No.:
- TLC27L2BCD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC27L2BCD.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,576
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Product details
Overview
TLC27L2BCD from Texas Instruments is a precision dual CMOS operational amplifier optimized for low-power, single-supply sensor signal conditioning. It delivers 2 mV max input offset voltage (25°C), ultra-low 34 µA typical supply current (VDD = 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 TLC27L2BCD datasheet, TLC27L2BCD pinout, TLC27L2BCD application, or TLC27L2BCD equivalent, key selection criteria include its 2 mV precision grade, −0.2 V to 3.5 V common-mode input range at 5 V supply, SOIC-8 package compatibility, and LinCMOS™ process stability for long-term drift-critical analog front-ends.
Technical Context
The TLC27L2BCD uses Texas Instruments' silicon-gate LinCMOS™ process, delivering high input impedance (10¹² Ω) and sub-60 pA input bias current while avoiding bipolar power penalties. Its architecture supports single-supply operation with input common-mode range extending below ground and output swing reaching the negative rail.
It features internal ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.2) and latch-up immunity. The device is characterized for 0°C to 70°C operation (C-suffix), with specifications validated across supply voltages from 3 V to 16 V and load conditions up to 1 MΩ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 2 mV max at 25°C - enables high-accuracy DC-coupled amplification without frequent nulling in sensor interfaces. |
| Supply Current (dual) | 34 µA typical at VDD = 5 V - supports multi-year battery life in remote 4–20 mA loop-powered transmitters. |
| Common-Mode Input Range | −0.2 V to 3.5 V at VDD = 5 V - allows direct interfacing with grounded sensors and single-supply ADC drivers. |
| Output Voltage Swing | Down to negative rail (GND) - preserves dynamic range in low-voltage single-supply systems. |
| Input Impedance | 10¹² Ω typical - minimizes loading on high-impedance sources like thermocouples and piezoelectric sensors. |
| Unity-Gain Bandwidth | 85 kHz at VDD = 5 V - sufficient for slow-varying industrial sensor signals (e.g., pressure, temperature, level). |
| ESD Protection | 2000 V HBM - meets robustness requirements for field-deployed instrumentation exposed to handling stress. |
Pinout & Package
Package: 8-pin SOIC (D package), 3.90 mm × 4.90 mm body, 1.27 mm pitch, gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1IN+ | Noninverting input, channel 1 | High-impedance node for reference or sensor signal routing; accepts voltages down to −0.2 V. |
| 1IN− | Inverting input, channel 1 | Feedback node for closed-loop gain configuration; matched to 1IN+ for precision matching. |
| 1OUT | Output, channel 1 | Capable of sourcing/sinking ±30 mA; swings to GND and up to VDD − 0.9 V at 5 V supply. |
| GND | Ground / negative supply | Reference for both inputs and outputs; common return for dual-channel operation. |
| 2IN+ | Noninverting input, channel 2 | Independent high-Z input for second sensor or signal path; identical specs to 1IN+. |
| 2IN− | Inverting input, channel 2 | Independent feedback node; supports dual independent amplifiers in one package. |
| 2OUT | Output, channel 2 | Functionally identical to 1OUT; enables dual-channel signal conditioning without cross-talk. |
| VDD | Positive supply | Accepts 3 V to 16 V; powers both amplifiers; supply rejection ratio ≥70 dB ensures noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 95 µW typical at 25°C and VDD = 5 V - reduces thermal drift and extends battery life in portable instrumentation. |
| Input offset voltage drift | 0.1 µV/month (including first 30 days) - ensures long-term calibration stability in unattended field deployments. |
| Rail-to-rail output capability | Output reaches GND and within 0.9 V of VDD - maximizes usable signal swing in low-voltage systems. |
| Single-supply operation | Operates from 3 V to 16 V with input common-mode range extending below GND - eliminates need for split supplies in sensor front-ends. |
| LinCMOS™ process technology | Provides superior offset voltage stability vs. metal-gate alternatives - critical for precision analog measurement over temperature and time. |
Applications
| Smoke and heat detector | Pressure transmitter |
|---|---|
Use Scenario: Amplifying low-level ionization chamber or thermistor signals in residential/commercial fire alarm panels. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier conditioning microvolt-level sensor outputs before ADC conversion. Use Value: 2 mV offset and 0.1 µV/month drift ensure reliable threshold detection over 10+ years without recalibration. | Use Scenario: Signal conditioning stage in 4–20 mA loop-powered industrial pressure transmitters. IC Role / Device Role / Timing Role: Dual op-amp implementing bridge excitation and differential amplification in harsh environments. Use Value: Single-supply operation (3–16 V) and rail-to-rail output enable full-scale utilization of 24 V loop headroom. |
| Temperature transmitter | Level transmitter |
Use Scenario: Linearizing and amplifying RTD or thermocouple outputs in process control systems. IC Role / Device Role / Timing Role: High-input-impedance buffer and gain stage driving precision voltage references or DACs. Use Value: 10¹² Ω input impedance prevents loading of high-Z RTD bridges; low bias current avoids self-heating errors. | Use Scenario: Converting hydrostatic or capacitive level sensor outputs into standardized analog signals. IC Role / Device Role / Timing Role: Dual-channel amplifier supporting sensor excitation and signal recovery in compact form factors. Use Value: SOIC-8 footprint and dual functionality reduce PCB area and BOM count versus discrete solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision dual op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC27L2CD | Same SOIC-8 package and LinCMOS™ process, but 10 mV max VIO (vs. 2 mV for TLC27L2BCD) - lower precision grade. | Suitable for cost-sensitive, non-critical signal paths where 5× higher offset is acceptable. | Select when budget constraints outweigh precision requirements and system calibration is feasible. |
| TLV2462IDR | Higher drive strength (15 mA), rail-to-rail I/O, 6.5 V/V/µs slew rate - but 50 µA supply current and 2 mV VIO (typical, not max). | Better for AC-coupled or faster-signal applications; less suitable for ultra-low-power, long-term DC stability. | Choose when higher bandwidth or true rail-to-rail input is required, accepting higher quiescent current. |
Compared with TLC27L2CD and TLV2462IDR, the TLC27L2BCD uniquely balances 2 mV guaranteed offset, sub-35 µA supply current, and proven long-term drift performance - making it optimal for battery-powered, maintenance-free industrial sensor nodes where precision and power co-constrain design.
Availability
TLC27L2BCD is available at Aetrix Electronics and suitable for pressure transmitter design, smoke detector manufacturing, temperature transmitter production, and level transmitter development requiring stable component supply across extended product lifecycles.
Supply support for TLC27L2BCD 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 industrial-grade signal chain components.
The TLC27Lx family was designed specifically for low-power, high-stability analog signal conditioning in field instrumentation - emphasizing long-term offset stability, single-supply usability, and robustness in unattended deployments.
FAQ
What is the maximum input offset voltage specification for TLC27L2BCD at 25°C?
The maximum input offset voltage for TLC27L2BCD at 25°C is 2 mV, as specified in the Electrical Characteristics table for C-suffix devices under VDD = 5 V test conditions. This value is guaranteed across production lots and forms the basis for precision DC amplification in sensor interfaces where calibration headroom is limited.
Does TLC27L2BCD support true single-supply operation with inputs extending below ground?
Yes, TLC27L2BCD supports true single-supply operation with a common-mode input voltage range extending to −0.2 V at VDD = 5 V. This allows direct connection of grounded sensors (e.g., thermocouples, strain gauges) without level-shifting circuitry - a key enabler for simplified, low-component-count analog front-ends in field transmitters.
What is the typical supply current for TLC27L2BCD at 5 V supply voltage?
The typical supply current for TLC27L2BCD at VDD = 5 V and 25°C is 34 µA for both amplifiers combined. This ultra-low quiescent current enables multi-year operation from coin-cell batteries in wireless sensor nodes and facilitates thermal management in densely packed industrial modules.
Which package type is used by TLC27L2BCD, and what are its mechanical dimensions?
TLC27L2BCD uses the D-package - an 8-pin SOIC with 3.90 mm × 4.90 mm body size, 1.27 mm lead pitch, and gull-wing surface-mount leads. This industry-standard footprint ensures compatibility with automated assembly processes and widely available PCB footprints for dual op-amps.
Is TLC27L2BCD qualified for operation across the full industrial temperature range?
No, TLC27L2BCD is characterized for the commercial temperature range of 0°C to 70°C (C-suffix). For extended industrial operation (−40°C to +85°C), the TLC27L2BI variant is specified; for military-grade operation (−55°C to +125°C), the TLC27L2M variant applies. Using TLC27L2BCD outside 0°C–70°C violates guaranteed specifications.
TLC27L2BCD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 0.03V/µs
- Gain Bandwidth Product:
- 110 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.6 pA
- Voltage - Input Offset:
- 204 µV
- Current - Supply:
- 20µA (x2 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:
- 8-SOIC
TLC27L2BCD FAQ
1.How can I place an order for TLC27L2BCD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27L2BCD 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 TLC27L2BCD reliable?
The price and inventory of TLC27L2BCD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27L2BCD is usually 5 days.
3.What payment methods are accepted for TLC27L2BCD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27L2BCD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27L2BCD?
TLC27L2BCD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27L2BCD 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 TLC27L2BCD?
For technical support, including TLC27L2BCD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27L2BCD requirements.
6.How does Aetrix verify that TLC27L2BCD is sourced from the original manufacturer or authorized distributors?
All TLC27L2BCD 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 TLC27L2BCD meets industry standards.
7.What is the process for return or replacement of TLC27L2BCD?
All TLC27L2BCD units undergo pre-shipment inspection (PSI). If there is an issue with TLC27L2BCD, 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 TLC27L2BCD part is unused and in its original packaging.
Return procedure for TLC27L2BCD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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