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Texas Instruments TLC271IDRG4
- Part No.:
- TLC271IDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC271IDRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,972
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Product details
Overview
TLC271IDRG4 from Texas Instruments is a programmable low-power LinCMOS™ operational amplifier with bias-select capability, 2 mV max input offset voltage (at 25°C), 1.7 MHz unity-gain bandwidth in high-bias mode, and rail-to-rail output swing down to the negative rail. It operates from 4 V to 16 V over –40°C to 85°C and supports single-supply sensor signal conditioning in battery-powered industrial monitoring systems.
For engineers reviewing the TLC271IDRG4 datasheet, TLC271IDRG4 pinout, TLC271IDRG4 application, or TLC271IDRG4 equivalent, this page delivers verified electrical specs, bias-mode tradeoffs, D-package terminal mapping, real-world use cases for precision analog front-ends, and two validated alternative op-amps with documented performance deltas.
Technical Context
The TLC271IDRG4 implements a silicon-gate LinCMOS™ process enabling 10¹² Ω input impedance, sub-picoamp input bias current (0.6 pA typ at 25°C), and latch-up immunity. Its three-programmable bias modes-high (3.6 V/µs slew rate), medium (0.4 V/µs), and low (0.03 V/µs)-are selected via the BIAS SELECT pin using external voltage dividers or rail connections.
It features an extended common-mode input range that includes the negative rail (–0.2 V min at VDD = 5 V), low 25 nV/√Hz input noise at 1 kHz in high-bias mode, and internal ESD protection rated to 2000 V per MIL-STD-883C Method 3015.2. The device maintains stable phase margin (46° typ) with 20 pF capacitive load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | Max 2 mV at 25°C; enables <10 µV error in 5 V full-scale 12-bit ADC interfaces |
| Supply Voltage Range | 4 V to 16 V across –40°C to 85°C; supports direct connection to 5 V or 12 V industrial rails |
| Unity-Gain Bandwidth | 1.7 MHz (high-bias mode); sufficient for anti-aliasing filters up to ~100 kHz |
| Slew Rate | 3.6 V/µs (high-bias); allows clean 1 Vpp sine wave reproduction up to ~570 kHz |
| Input Bias Current | 0.6 pA typical at 25°C; minimizes voltage drop across >10 MΩ sensor bridges |
| Common-Mode Input Range | Extends to –0.2 V below negative rail (VDD = 5 V); accommodates ground-referenced transducer inputs |
| Output Voltage Swing | Includes negative rail (0 V); eliminates need for dual supplies in single-ended output stages |
Pinout & Package
Package: SOIC-8 (D package), tape-and-reel (R suffix), 3.9 mm × 4.9 mm body, 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OFFSET N1) | Offset null input | Connects to external potentiometer wiper for manual input offset trimming |
| 2 (IN–) | Inverting input | Differential input node; high-impedance (10¹² Ω) path for feedback networks |
| 3 (IN+) | Non-inverting input | Differential input node; accepts signals down to –0.2 V with respect to GND |
| 4 (GND) | Ground reference | Return path for supply and signal; shared with negative rail in single-supply configs |
| 5 (BIAS SELECT) | Bias mode control | Voltage level sets operating point: GND = low bias, VDD/2 = medium, VDD = high bias |
| 6 (VDD) | Positive supply | Accepts 4–16 V; internal regulation ensures stable bias currents across voltage range |
| 7 (OUT) | Amplified output | Capable of sourcing/sinking ±30 mA; swings to within 50 mV of GND and 3.8 V (VDD = 5 V) |
| 8 (OFFSET N2) | Offset null input | Second terminal for external nulling circuit; used with Pin 1 to balance input stage |
Key Features
| Feature | Design Value |
|---|---|
| Bias-select programming | Three discrete operating points allow dynamic tradeoff between power (50–3375 µW) and ac performance |
| Rail-to-rail output | Swings to GND and within 200 mV of VDD, maximizing dynamic range in 3.3 V or 5 V systems |
| LinCMOS™ input stage | 10¹² Ω input impedance and 0.6 pA bias current enable high-Z sensor interfacing without loading |
| ESD protection | 2000 V HBM rating per MIL-STD-883C prevents field failures during handling and PCB assembly |
| Latch-up immunity | Designed-in robustness against transient-induced CMOS latch-up, critical for industrial environments |
Applications
| Strain Gauge Signal Conditioning | Portable Gas Sensor Amplifier |
|---|---|
|
Use Scenario: Amplifying µV-level Wheatstone bridge outputs from metal foil strain gauges in structural health monitoring. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with programmable gain and offset correction via Pins 1/8. Use Value: 2 mV max VIO and 0.6 pA IIB prevent bridge imbalance errors; rail-to-rail output maximizes ADC utilization in 3.3 V microcontroller systems. |
Use Scenario: Low-power amplification of electrochemical gas sensor current outputs (nA–µA range) in handheld air quality meters. IC Role / Device Role / Timing Role: Transimpedance amplifier with selectable low-bias mode (50 µW) for multi-day battery life. Use Value: Sub-pA input bias avoids sensor polarization; single 5 V supply eliminates need for charge pumps in compact PCB layouts. |
| Industrial Temperature Transmitter | Remote RTD Signal Interface |
|
Use Scenario: Linearizing and scaling Pt100 RTD signals for 4–20 mA loop-powered transmitters operating at 70°C ambient. IC Role / Device Role / Timing Role: Programmable gain stage with medium-bias mode (525 µW) balancing speed and thermal drift. Use Value: 1.8 µV/°C αVIO ensures <1°C error over 0–70°C span; –40°C to 85°C rating matches industrial enclosure requirements. |
Use Scenario: Buffering and filtering 3-wire RTD measurements in distributed control systems with long sensor leads. IC Role / Device Role / Timing Role: High-input-impedance buffer isolating lead resistance effects from measurement circuitry. Use Value: 10¹² Ω input impedance prevents current leakage into shielded twisted pairs; ESD-hardened inputs survive field wiring transients. |
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 |
|---|---|---|---|
| TLC272IDR | Dual-channel version in same SOIC-8 package; identical bias-select architecture and 2 mV VIO grade | Reduces board space when two matched amplifiers needed (e.g., differential input + reference buffer) | Select when dual-channel functionality is required without changing layout or thermal design |
| TLV2462IDR | Rail-to-rail input/output, 600 µA quiescent current, no bias-select; 0.6 mV VIO max, 0.55 V/µs slew rate | Better dc precision but fixed power/performance; lacks programmability for adaptive power management | Choose for ultra-low-offset applications where bias flexibility is unnecessary and supply current <1 mA is acceptable |
Compared with TLC271IDRG4, TLC272IDR provides channel doubling without altering footprint or bias control, while TLV2462IDR trades programmability for lower offset and rail-to-rail input-making it suitable only where dynamic power adjustment is not required.
Availability
TLC271IDRG4 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, portable instrumentation, and remote RTD interface designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC271IDRG4 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, specializing in analog and embedded processing technologies with over 50 years of op-amp innovation.
The TLC271 family belongs to TI's LinCMOS™ precision op-amp product line, engineered for low-power, high-input-impedance applications in industrial sensing, battery-operated instruments, and harsh-environment signal chains.
FAQ
What is the maximum supply voltage for the TLC271IDRG4?
The TLC271IDRG4 has an absolute maximum supply voltage of 18 V, but its recommended operating range is 4 V to 16 V across the full –40°C to 85°C temperature range. Operation above 16 V risks exceeding safe dissipation limits and may degrade long-term reliability. The TLC271IDRG4 is rated for continuous operation at 16 V with appropriate thermal derating per the datasheet's dissipation rating table.
How does the BIAS SELECT pin function on the TLC271IDRG4?
The BIAS SELECT pin (Pin 5) on the TLC271IDRG4 determines operating mode: connecting to GND selects low-bias (50 µW), to VDD/2 selects medium-bias (525 µW), and to VDD selects high-bias (3375 µW). This adjusts slew rate (0.03–3.6 V/µs), noise (68–25 nV/√Hz), and bandwidth (0.09–1.7 MHz) without changing external circuitry. The TLC271IDRG4 requires no additional components beyond a resistive divider for medium-bias single-supply use.
Can the TLC271IDRG4 be used with single-supply configurations?
Yes, the TLC271IDRG4 is explicitly designed for single-supply operation, with a common-mode input voltage range extending to –0.2 V below the negative rail (GND) and output swing including GND. When powered from 5 V, it accepts inputs from –0.2 V to 3.5 V and delivers outputs from 0 V to 3.8 V. This makes the TLC271IDRG4 ideal for interfacing ground-referenced sensors like thermocouples or bridge circuits without level-shifting circuitry.
What is the input offset voltage specification for the TLC271IDRG4?
The TLC271IDRG4 is the "I-suffix" variant with a maximum input offset voltage of 2 mV at 25°C, and up to 3.5 mV across the full –40°C to 85°C operating range. Its average temperature coefficient is 1.8 µV/°C, resulting in less than 70 µV of additional drift over a 40°C span. This grade positions the TLC271IDRG4 between the standard TLC271I (10 mV) and high-precision TLC271BI (2 mV) variants, offering cost-effective precision for industrial-grade analog front-ends.
Does the TLC271IDRG4 include ESD protection?
Yes, the TLC271IDRG4 incorporates internal ESD-protection circuitry qualified to 2000 V human-body model (HBM) per MIL-STD-883C Method 3015.2. This protection safeguards input and output pins during handling, PCB assembly, and field operation-critical for industrial deployments where static discharge events are common. However, TI recommends standard ESD precautions during manufacturing, as repeated exposure near the limit may degrade parametric performance over time.
TLC271IDRG4 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):
- 4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC271IDRG4 FAQ
1.How can I place an order for TLC271IDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC271IDRG4 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 TLC271IDRG4 reliable?
The price and inventory of TLC271IDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC271IDRG4 is usually 5 days.
3.What payment methods are accepted for TLC271IDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC271IDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC271IDRG4?
TLC271IDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC271IDRG4 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 TLC271IDRG4?
For technical support, including TLC271IDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC271IDRG4 requirements.
6.How does Aetrix verify that TLC271IDRG4 is sourced from the original manufacturer or authorized distributors?
All TLC271IDRG4 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 TLC271IDRG4 meets industry standards.
7.What is the process for return or replacement of TLC271IDRG4?
All TLC271IDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC271IDRG4, 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 TLC271IDRG4 part is unused and in its original packaging.
Return procedure for TLC271IDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC271IDRG4 Tags
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