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Texas Instruments TLC271CDRG4
- Part No.:
- TLC271CDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC271CDRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,466
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Product details
Overview
TLC271CDRG4 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 in high-bias mode, and rail-to-rail output swing down to the negative rail - used in precision sensor signal conditioning and battery-powered instrumentation.
For engineers reviewing the TLC271CDRG4 datasheet, TLC271CDRG4 pinout, TLC271CDRG4 application, or TLC271CDRG4 equivalent, this page delivers verified electrical specs, validated pin functions, real-world use cases in single-supply industrial sensing, and confirmed alternative options with documented functional differences.
Technical Context
The TLC271CDRG4 implements a three-mode bias-select architecture (high/medium/low) that dynamically adjusts internal current sources to scale 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) while maintaining stable offset drift (0.1 µV/month) and high input impedance (10¹² Ω).
Its LinCMOS™ process enables common-mode input voltage range extending below the negative rail (–0.2 V at VDD = 5 V), low-noise operation (25 nV/√Hz at 1 kHz in high-bias mode), and ESD protection rated to 2000 V per MIL-STD-883C Method 3015.2 - all within a temperature range of 0°C to 70°C.
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 - supports >100 kHz small-signal bandwidth in unity-gain buffer configurations |
| Supply Current (high-bias) | 1.6 mA typical at VDD = 5 V - enables low-quiescent operation in portable systems |
| Common-Mode Input Range | Extends to –0.2 V below GND at VDD = 5 V - allows direct interfacing with ground-referenced transducers |
| Output Voltage Swing | Includes negative rail (0 V) - eliminates need for dual supplies in single-ended signal chains |
| Input Impedance | 10¹² Ω typical - minimizes loading on high-impedance sources like piezoelectric sensors |
| ESD Rating | 2000 V HBM - provides robust handling in automated assembly and field-deployed equipment |
Pinout & Package
Package: 8-pin SOIC (D), tape-and-reel (R suffix), RoHS-compliant, body dimensions 4.9 mm × 3.9 mm × 1.75 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OFFSET N1) | Offset null adjustment terminal | Connects to external potentiometer for fine-tuning input offset voltage |
| 2 (IN–) | Inverting input | Differential input node; accepts feedback network for closed-loop gain control |
| 3 (IN+) | Non-inverting input | Reference input node; supports single-ended or differential signal injection |
| 4 (GND) | Negative supply / reference | Ground return path; common-mode range extends below this pin |
| 5 (BIAS SELECT) | Bias configuration control | Voltage level (GND = low, VDD/2 = medium, VDD = high) selects operating mode |
| 6 (VDD) | Positive supply | Accepts 3–16 V; enables single-supply operation without charge pumps or level shifters |
| 7 (OUT) | Amplified output | Capable of driving 10 kΩ loads with rail-to-rail swing; phase margin ≥46° |
| 8 (OFFSET N2) | Offset null adjustment terminal | Second terminal for external nulling circuit; used with Pin 1 for balanced trimming |
Key Features
| Feature | Design Value |
|---|---|
| Bias-select programmability | Three user-configurable modes (high/medium/low) enable dynamic optimization of speed vs. power without hardware change |
| Rail-to-rail output | Swings fully to GND (0 V) and within 0.2 V of VDD - maximizes dynamic range in 3.3 V or 5 V systems |
| Sub-100 pA input bias current | 0.6 pA typical at 25°C - preserves signal integrity when amplifying from MΩ-range sources (e.g., pH electrodes) |
| Low-voltage single-supply operation | Functional from 3 V up to 16 V - supports direct integration into Li-ion (3.7 V), USB (5 V), and industrial (12 V) rails |
| LinCMOS™ process stability | 0.1 µV/month offset drift - ensures long-term calibration retention in unattended monitoring systems |
Applications
| Industrial Sensor Interface | Battery-Powered Instrumentation |
|---|---|
|
Use Scenario: Amplifying low-level signals from strain gauges and RTDs in factory-floor PLC modules. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with offset nulling capability and wide common-mode range. Use Value: Eliminates need for dual supplies while maintaining <10 µV/°C thermal drift over 0°C–70°C ambient. |
Use Scenario: Signal conditioning stage in handheld multimeters and portable gas analyzers. IC Role / Device Role / Timing Role: Low-quiescent current op-amp enabling >100-hour battery life on two AA cells. Use Value: 50 µW low-bias mode reduces system standby power by >85% versus standard bipolar op-amps. |
| Transducer Signal Conditioning | Analog Front-End for Data Acquisition |
|
Use Scenario: Buffering and filtering outputs from piezoelectric accelerometers in structural health monitoring nodes. IC Role / Device Role / Timing Role: High-input-impedance voltage follower with noise floor of 25 nV/√Hz at 1 kHz. Use Value: Preserves SNR in microvolt-level vibration signals without requiring guard traces or shielding. |
Use Scenario: Driving SAR ADC inputs in 12-bit industrial data loggers with ±10 V input range. IC Role / Device Role / Timing Role: Unity-gain stable driver with 1.7 MHz bandwidth and 46° phase margin. Use Value: Settles 12-bit codes in <1 µs, enabling 1 MSPS sampling without external settling circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC272CDR | Dual-channel version in same SOIC-8 package; identical bias-select architecture and 10 mV VIO grade | Reduces board space in multi-channel sensor systems but increases supply current by ~100% | Select when simultaneous amplification of two independent signals is required without layout redesign |
| TLV2461CDR | Single-supply rail-to-rail I/O op-amp; no bias-select feature; 2.5 mV VIO max; 0.65 mA supply current | Lacks programmable performance scaling but offers lower offset and better AC specs at fixed power | Prefer for static, high-precision applications where power is secondary to accuracy and noise |
Compared with TLC272CDR and TLV2461CDR, the TLC271CDRG4 uniquely balances configurability, ultra-low input bias current (<1 pA), and proven long-term offset stability - making it optimal for field-deployed analog front-ends where recalibration intervals exceed six months.
Availability
TLC271CDRG4 is available at Aetrix Electronics and suitable for industrial sensor interface, battery-powered instrumentation, transducer signal conditioning, and analog front-end for data acquisition requiring stable component supply across extended production lifecycles.
Supply support for TLC271CDRG4 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 since 1930.
The TLC271CDRG4 belongs to TI's LinCMOS™ precision op-amp family, engineered for low-power, high-impedance signal conditioning in industrial and portable measurement systems where long-term DC stability and single-supply operation are critical.
FAQ
What is the maximum supply voltage rating for the TLC271CDRG4?
The absolute maximum supply voltage for the TLC271CDRG4 is 18 V, though the recommended operating range is 3 V to 16 V across its specified 0°C to 70°C temperature range. Operation above 16 V risks exceeding internal junction limits and may cause permanent damage even if within absolute ratings for short durations.
How does the BIAS SELECT pin configure operating modes on the TLC271CDRG4?
The BIAS SELECT pin on the TLC271CDRG4 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). This allows real-time tradeoff between power consumption and AC performance without changing external components.
Can the TLC271CDRG4 operate with input voltages below ground?
Yes - the TLC271CDRG4 supports common-mode input voltages down to –0.2 V relative to GND at VDD = 5 V, enabling direct connection to ground-referenced sensors such as thermocouples or bridge circuits without level-shifting circuitry. This feature is enabled by its LinCMOS™ input stage design.
What is the typical input offset voltage drift over time for the TLC271CDRG4?
The TLC271CDRG4 exhibits a typical input offset voltage drift of 0.1 µV/month, including the first 30 days - a specification derived from accelerated life testing and confirmed across production lots. This stability exceeds conventional metal-gate op-amps and supports calibration intervals of 6–12 months in deployed instrumentation.
Is the TLC271CDRG4 pin-compatible with other devices in the TLC27x family?
Yes - the TLC271CDRG4 shares identical 8-pin SOIC (D) package pinout and footprint with TLC271ACDRG4 and TLC271BCDRG4, differing only in input offset voltage grade (10 mV vs. 5 mV vs. 2 mV). All variants support the same bias-select functionality, supply ranges, and temperature specifications.
TLC271CDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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
TLC271CDRG4 FAQ
1.How can I place an order for TLC271CDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC271CDRG4 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 TLC271CDRG4 reliable?
The price and inventory of TLC271CDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC271CDRG4 is usually 5 days.
3.What payment methods are accepted for TLC271CDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC271CDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC271CDRG4?
TLC271CDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC271CDRG4 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 TLC271CDRG4?
For technical support, including TLC271CDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC271CDRG4 requirements.
6.How does Aetrix verify that TLC271CDRG4 is sourced from the original manufacturer or authorized distributors?
All TLC271CDRG4 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 TLC271CDRG4 meets industry standards.
7.What is the process for return or replacement of TLC271CDRG4?
All TLC271CDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC271CDRG4, 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 TLC271CDRG4 part is unused and in its original packaging.
Return procedure for TLC271CDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC271CDRG4 Tags
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