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Texas Instruments TLC271CD
- Part No.:
- TLC271CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC271CD.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:9,673
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Product details
Overview
TLC271CD from Texas Instruments is a programmable low-power LinCMOS™ operational amplifier in an 8-pin SOIC (D) package, featuring bias-select mode for configurable power/performance tradeoffs, 10 mV max input offset voltage at 25°C, 3.6 V/µs slew rate (high-bias), and rail-to-rail output swing down to the negative rail. It operates from 3 V to 16 V supply across 0°C to 70°C and is used in precision sensor signal conditioning where single-supply operation and low quiescent current are critical.
For engineers reviewing the TLC271CD datasheet, TLC271CD pinout, TLC271CD application, or TLC271CD equivalent, this page delivers verified specifications including bias-select voltage thresholds, offset voltage drift (0.1 µV/month), input impedance (10¹² Ω), noise (25 nV/√Hz @ 1 kHz), and temperature-rated operating conditions - all confirmed for the C-suffix, D-package variant.
Technical Context
The TLC271CD implements a silicon-gate LinCMOS™ process enabling high input impedance (10¹² Ω typical), ultra-low input bias current (0.6 pA typ at 25°C), and latch-up immunity. Its bias-select pin allows dynamic configuration among high/medium/low bias modes, directly altering slew rate (3.6 / 0.4 / 0.03 V/µs), unity-gain bandwidth (1.7 / 0.5 / 0.09 MHz), and supply current (1.6 / 0.525 / 0.05 mA).
It supports true single-supply operation with common-mode input range extending 0.2 V below the negative rail (GND), output swing to GND, and ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.2). Absolute maximum supply voltage is 18 V, and it is characterized for 0°C to 70°C operation per the C-suffix specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (max) | 10 mV at 25°C - sets baseline DC error in precision amplification stages |
| Slew Rate (high-bias) | 3.6 V/µs - enables stable amplification of signals up to ~1.7 MHz at unity gain |
| Supply Voltage Range | 3 V to 16 V - supports battery-powered (3 V) and industrial (12–16 V) rails |
| Input Impedance | 10¹² Ω typical - minimizes loading on high-impedance sources like piezoelectric sensors |
| Offset Drift | 0.1 µV/month (including first 30 days) - ensures long-term calibration stability |
| ESD Rating | 2000 V HBM - reduces handling sensitivity during PCB assembly and test |
| Common-Mode Input Range | Extends to –0.2 V (below GND) - allows accurate sensing near ground in single-supply systems |
Pinout & Package
Package: 8-pin SOIC (D), surface-mount, tape-and-reel compatible (R suffix available).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OFFSET N1) | Offset null input 1 | Connects to external potentiometer wiper for manual input offset trimming |
| 2 (IN–) | Inverting input | Differential input node; accepts feedback network for closed-loop gain control |
| 3 (IN+) | Non-inverting input | Reference or signal input node; common-mode range extends below GND |
| 4 (GND) | Ground reference | Negative supply rail for single-supply operation; return path for bias-select divider |
| 5 (BIAS SELECT) | Bias configuration control | Voltage level (GND = low, VDD/2 = medium, VDD = high) selects power/performance mode |
| 6 (VDD) | Positive supply | Accepts 3–16 V; internal regulation enables stable operation across wide voltage range |
| 7 (OUT) | Amplifier output | Rail-to-rail swing to GND; drives 10 kΩ load with <50 mV low-level saturation |
| 8 (OFFSET N2) | Offset null input 2 | Second terminal for external offset nulling circuit; used with Pin 1 for trim adjustment |
Key Features
| Feature | Design Value |
|---|---|
| Bias-select mode | Three user-configurable operating points (high/medium/low) enable dynamic tradeoff between speed (3.6 V/µs) and power (50 µW min) |
| Linchmos™ process | Delivers 10¹² Ω input impedance and sub-pA input bias current - critical for photodiode and capacitive sensor interfaces |
| Rail-to-rail output | Swings to GND under load - maximizes dynamic range in 3 V single-supply systems without negative rail |
| Offset voltage stability | 0.1 µV/month drift and 1.8 µV/°C tempco - reduces recalibration frequency in field-deployed instrumentation |
| ESD-protected inputs | 2000 V HBM rating - eliminates need for external protection diodes in moderate-noise environments |
Applications
| Transducer Signal Conditioning | Battery-Powered Sensor Node |
|---|---|
|
Use Scenario: Amplifying low-level mV outputs from strain gauges or thermopiles in industrial monitoring systems. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with offset trimming capability and low drift. Use Value: 10 mV max VIO and 0.1 µV/month drift ensure measurement accuracy over months without recalibration. |
Use Scenario: Front-end amplification in wireless environmental sensors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Low-power op-amp configured in low-bias mode (50 µW) for extended battery life. Use Value: 50 µW minimum supply power enables >10-year operation on CR2032 when sampling intermittently. |
| Active Filter Stage | Analog Front-End for Data Acquisition |
|
Use Scenario: 2nd-order Sallen-Key low-pass filter in medical ECG signal chain. IC Role / Device Role / Timing Role: Unity-gain stable amplifier with 1.7 MHz GBW (high-bias) and 46° phase margin. Use Value: Configurable bias mode allows optimizing filter Q-factor and settling time without changing layout. |
Use Scenario: Buffering and level-shifting analog signals before ADC sampling in PLC I/O modules. IC Role / Device Role / Timing Role: Rail-to-rail output driver with common-mode input extending below GND. Use Value: Enables direct interface to ±10 V industrial sensors using only a +12 V supply and no level-shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable low-power op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC272CD | Dual-channel version in same SOIC-8 package; identical bias-select architecture and specs per channel | Reduces board space in multi-channel signal chains but increases supply current proportionally | Select when two matched amplifiers are required in same thermal environment and footprint |
| TLV2461CD | Rail-to-rail input/output, lower VIO (2 mV max), higher quiescent current (550 µA vs 1.6 mA high-bias), no bias-select | Superior DC precision but fixed power/performance; lacks programmability for adaptive systems | Select when lowest possible offset and rail-to-rail input are mandatory, and power adaptability is not needed |
Compared with TLC272CD and TLV2461CD, the TLC271CD uniquely provides on-the-fly bias mode selection - enabling one hardware design to serve both high-speed diagnostics (high-bias) and ultra-low-power sleep modes (low-bias) without firmware or component changes.
Availability
TLC271CD is available at Aetrix Electronics and suitable for transducer interfacing, battery-powered sensor nodes, active filter stages, and analog front-ends requiring stable component supply across industrial, medical, and test equipment designs.
Supply support for TLC271CD 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TLC271CD belongs to TI's LinCMOS™ programmable op-amp family, designed specifically for applications demanding configurable power/performance, single-supply operation, and long-term DC stability in cost-sensitive instrumentation.
FAQ
What is the maximum supply voltage for the TLC271CD?
The absolute maximum supply voltage for the TLC271CD is 18 V. However, the recommended operating range is 3 V to 16 V across 0°C to 70°C. Operation above 16 V risks exceeding safe dissipation limits and may degrade long-term reliability, even if within absolute ratings.
How does the BIAS SELECT pin configure operating modes on the TLC271CD?
The TLC271CD BIAS SELECT pin sets operating mode via voltage level: GND selects low-bias (50 µW, 0.03 V/µs), VDD/2 selects medium-bias (525 µW, 0.4 V/µs), and VDD selects high-bias (3.4 mW, 3.6 V/µs). A resistive divider is required for medium-bias in single-supply configurations to generate the midpoint voltage.
Can the TLC271CD operate with input voltages below ground?
Yes - the TLC271CD common-mode input voltage range extends to –0.2 V below GND at VDD = 5 V, and to –0.2 V below GND at VDD = 10 V, enabling accurate amplification of signals referenced slightly below ground in single-supply systems without level-shifting circuitry.
What is the typical input bias current of the TLC271CD at 25°C?
The typical input bias current of the TLC271CD is 0.6 pA at 25°C, with a maximum of 60 pA over the full 0°C to 70°C range. This ultra-low value results from TI's LinCMOS™ silicon-gate process and makes the device suitable for high-impedance sensor interfaces such as photodiodes and piezoelectric elements.
Does the TLC271CD require external components for offset nulling?
Yes - the TLC271CD provides dedicated OFFSET N1 (Pin 1) and OFFSET N2 (Pin 8) terminals for external nulling. A 10-kΩ potentiometer connected between these pins, with its wiper tied to VDD or GND depending on polarity, allows manual adjustment of input offset voltage to <1 mV in final calibration.
TLC271CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 5.3V/µs
- Gain Bandwidth Product:
- 2.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.7 pA
- Voltage - Input Offset:
- 1.1 mV
- Current - Supply:
- 950µA
- 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
TLC271CD FAQ
1.How can I place an order for TLC271CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC271CD 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 TLC271CD reliable?
The price and inventory of TLC271CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC271CD is usually 5 days.
3.What payment methods are accepted for TLC271CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC271CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC271CD?
TLC271CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC271CD 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 TLC271CD?
For technical support, including TLC271CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC271CD requirements.
6.How does Aetrix verify that TLC271CD is sourced from the original manufacturer or authorized distributors?
All TLC271CD 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 TLC271CD meets industry standards.
7.What is the process for return or replacement of TLC271CD?
All TLC271CD units undergo pre-shipment inspection (PSI). If there is an issue with TLC271CD, 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 TLC271CD part is unused and in its original packaging.
Return procedure for TLC271CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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