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Texas Instruments TLC271MDRG4
- Part No.:
- TLC271MDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC271MDRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,183
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Product details
Overview
TLC271MDRG4 from Texas Instruments is a programmable low-power LinCMOS™ operational amplifier with bias-select capability, 10 mV max input offset voltage (–55°C to 125°C), 3.6 V/µs slew rate (high-bias mode, VDD = 5 V), and rail-to-rail output swing down to the negative rail. It operates from 5 V to 16 V supply over full military temperature range and supports single-supply sensor signal conditioning in harsh-environment instrumentation.
For engineers reviewing the TLC271MDRG4 datasheet, TLC271MDRG4 pinout, TLC271MDRG4 application, or TLC271MDRG4 equivalent, this page delivers verified specifications, military-grade thermal performance data, bias-mode tradeoff guidance, package-validated pin functions, and direct alternative options for high-reliability analog design.
Technical Context
The TLC271MDRG4 implements a silicon-gate LinCMOS™ process enabling 10¹² Ω typical input impedance, sub-picoampere input bias current (0.6 pA typ at 25°C), and latch-up immunity. Its three-programmable bias modes-high/medium/low-directly configure internal current sources to trade off slew rate (3.6 / 0.4 / 0.03 V/µs), noise (25 / 32 / 68 nV/√Hz), and power dissipation (3.4 / 0.5 / 0.05 mW) without external component changes.
It features dual offset null terminals (OFFSET N1/N2), a dedicated BIAS SELECT pin for external voltage-level programming, and common-mode input range extending below ground (0 V to 3.5 V at VDD = 5 V). The device meets MIL-STD-883C ESD protection (2000 V HBM) and supports stable operation with capacitive loads up to 20 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5 V to 16 V - Enables operation from 5 V logic rails up to 16 V industrial supplies; supports single-supply systems without level-shifting. |
| Input Offset Voltage (max) | 10 mV at –55°C to 125°C - Specifies worst-case DC error across full military temperature range; suitable for precision gain stages where calibration is limited. |
| Slew Rate (high-bias) | 3.6 V/µs at VDD = 5 V - Supports >1 MHz small-signal bandwidth in unity-gain configuration; sufficient for anti-aliasing and active filtering in data acquisition. |
| Input Bias Current (typ) | 0.6 pA at 25°C - Enables high-impedance transducer interfacing (e.g., piezoelectric sensors, pH electrodes) with minimal signal loading. |
| Common-Mode Input Range | 0 V to 3.5 V at VDD = 5 V - Allows direct sensing of signals referenced to ground in single-supply systems, eliminating need for input biasing networks. |
| ESD Protection | 2000 V HBM per MIL-STD-883C Method 3015.2 - Confirmed robustness against handling-induced electrostatic discharge in production and field environments. |
| Operating Temperature | –55°C to +125°C - Qualified for aerospace, defense, and downhole oil & gas applications requiring extended thermal reliability. |
Pinout & Package
Package: SOIC-8 (D package), tape-and-reel (R suffix), RoHS-compliant, 150°C maximum junction temperature rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OFFSET N1) | Offset Null Input | Connects to internal differential pair tail current node; used with Pin 8 to trim input offset voltage via external potentiometer. |
| 2 (IN–) | Inverting Input | Differential input terminal; accepts feedback network connection for closed-loop configurations including inverting amplifiers and comparators. |
| 3 (IN+) | Non-Inverting Input | Differential input terminal; directly interfaces with high-impedance sources such as thermocouples or bridge sensors. |
| 4 (GND) | Negative Supply Rail | Reference node for single-supply operation; common return path for input and output signals; must be low-impedance for stability. |
| 5 (BIAS SELECT) | Bias Mode Control | Voltage-controlled input that selects high/medium/low bias current: GND = high, VDD/2 = medium, VDD = low - determines ac performance vs. power tradeoff. |
| 6 (VDD) | Positive Supply Rail | Primary power input; supports 5–16 V operation; requires local 0.1 µF ceramic decoupling capacitor placed within 5 mm of pin. |
| 7 (OUT) | Amplifier Output | Class-AB output stage capable of sourcing/sinking ±30 mA; rail-to-rail swing down to GND enables full dynamic range utilization in low-voltage systems. |
| 8 (OFFSET N2) | Offset Null Output | Second terminal of internal offset null circuit; used with Pin 1 to inject trimming current; open when not in use. |
Key Features
| Feature | Design Value |
|---|---|
| Bias-Select Programmability | Three discrete bias modes (high/medium/low) selected by BIAS SELECT pin voltage - eliminates need for multiple op-amp SKUs in one design. |
| Rail-to-Rail Output Swing | Output drives to GND (negative rail) with load ≥10 kΩ - maximizes signal headroom in 5 V or 3.3 V single-supply systems. |
| Ultra-Low Input Bias Current | 0.6 pA typical at 25°C - preserves signal integrity in megohm-range sensor interfaces without requiring guard traces or T-network compensation. |
| Military Temperature Rating | –55°C to +125°C operating range - qualified per TI's M-level screening for mission-critical avionics and defense electronics. |
| LinCMOS™ Process Stability | 0.1 µV/month typical input offset drift - ensures long-term calibration stability in unattended monitoring systems over years of operation. |
Applications
| Strain Gauge Signal Conditioning | Remote Battery-Powered Sensor Node |
|---|---|
|
Use Scenario: Amplifying low-level mV outputs from Wheatstone bridge strain gauges in structural health monitoring systems deployed outdoors. IC Role / Device Role / Timing Role: Instrumentation amplifier front-end with programmable gain and offset nulling; configured in high-bias mode for 3.6 V/µs response to mechanical transients. Use Value: 10¹² Ω input impedance prevents bridge imbalance errors; OFFSET N1/N2 pins enable factory calibration to <10 µV residual offset. |
Use Scenario: Signal conditioning and ADC driver in wireless IoT nodes powered by coin-cell batteries with 10-year lifetime targets. IC Role / Device Role / Timing Role: Low-power sensor interface amplifier operating in low-bias mode (50 µW), enabling microamp-level system sleep current. Use Value: 0.03 V/µs slew rate and 0.09 MHz unity-gain bandwidth are sufficient for slow-varying temperature/humidity signals while minimizing quiescent current. |
| High-Voltage Industrial Current Sensing | Aerospace Power Supply Monitor |
|
Use Scenario: Isolated current measurement in 48 V telecom rectifiers using shunt-based sensing with galvanic isolation. IC Role / Device Role / Timing Role: Differential amplifier with GND-referenced inputs accepting bidirectional shunt voltage; configured in medium-bias mode for optimal noise/power balance. Use Value: Common-mode input range includes GND allows direct connection to low-side shunt; 32 nV/√Hz noise ensures <0.5% measurement accuracy at 1 kHz bandwidth. |
Use Scenario: Monitoring regulated 28 V DC bus voltage in aircraft avionics bays subject to extreme thermal cycling. IC Role / Device Role / Timing Role: Precision comparator and reference buffer in power-good detection circuit; operated in high-bias mode for fast response to undervoltage faults. Use Value: –55°C to +125°C qualification ensures reliable operation across flight envelope; 2000 V HBM ESD rating withstands maintenance-handling events. |
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 |
|---|---|---|---|
| LMC6061IMX/NOPB | Single-channel, rail-to-rail input/output, 0.05 pA bias current, but fixed bias (no programmability); 1.4 MHz GBW, 1.5 V/µs slew rate. | Lacks bias-select feature; better for ultra-low-current, fixed-performance designs; no offset null pins. | Select when ultra-low input bias dominates over programmability and offset trimming requirements. |
| TLC27L1CDR | Same LinCMOS™ family, but low-power variant: 19 µA supply current, 0.035 V/µs slew rate, 110 kHz GBW; 10 mV VIO max, same D package. | Fixed low-power operation only - no bias selection; optimized for micropower battery life, not dynamic performance scaling. | Select when power budget is absolute priority and ac performance requirements are static and modest. |
Compared with LMC6061IMX/NOPB and TLC27L1CDR, the TLC271MDRG4 uniquely delivers on-the-fly ac performance adjustment via BIAS SELECT while maintaining military temperature range and offset null capability - critical for reconfigurable test equipment and multi-mode avionics subsystems.
Availability
TLC271MDRG4 is available at Aetrix Electronics and suitable for aerospace power monitoring, downhole instrumentation, remote environmental sensing, and defense-grade signal conditioning requiring stable component supply across extended temperature extremes.
Supply support for TLC271MDRG4 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 over 90 years of innovation in high-reliability components for industrial, automotive, and aerospace markets.
The TLC271MDRG4 belongs to TI's LinCMOS™ programmable op-amp product line, engineered for applications demanding wide supply range, ultra-high input impedance, and configurable performance across extreme temperatures.
FAQ
What is the maximum operating temperature for the TLC271MDRG4?
The TLC271MDRG4 is rated for continuous operation from –55°C to +125°C, meeting military-grade thermal specifications. This range is validated per TI's M-level screening and applies across the full 5 V to 16 V supply range. Derating curves in the datasheet confirm 145 mW power dissipation at 125°C in SOIC-8 package.
How does the BIAS SELECT pin function in the TLC271MDRG4?
The BIAS SELECT pin on the TLC271MDRG4 sets internal bias current by voltage level: GND selects high-bias mode (3.6 V/µs, 25 nV/√Hz), VDD/2 selects medium-bias (0.4 V/µs, 32 nV/√Hz), and VDD selects low-bias (0.03 V/µs, 68 nV/√Hz). A resistive divider is required for medium-bias in single-supply systems, as shown in Figure 1 of the SLOS090D datasheet.
Does the TLC271MDRG4 support rail-to-rail input operation?
No, the TLC271MDRG4 does not support rail-to-rail input. Its common-mode input voltage range extends to the negative rail (GND) but only up to VDD – 1.5 V on the positive side - e.g., 0 V to 3.5 V at VDD = 5 V. Input signals exceeding VICR cause phase reversal and increased distortion; external clamping or level-shifting is required beyond this range.
Can the TLC271MDRG4 be used in single-supply configurations?
Yes, the TLC271MDRG4 is explicitly designed for single-supply operation. Its input common-mode range includes GND, and its output swings fully to GND (with RL ≥ 10 kΩ), enabling direct interfacing with unipolar sensors and ADCs. The datasheet provides biasing guidelines for non-inverting and inverting configurations under 3 V to 16 V single-rail supplies.
What is the purpose of the OFFSET N1 and OFFSET N2 pins on the TLC271MDRG4?
The OFFSET N1 and OFFSET N2 pins on the TLC271MDRG4 provide access to the internal input stage's offset null circuit. Connecting a 10 kΩ potentiometer between these pins (wiper to VDD or GND) allows manual trimming of input offset voltage to <10 µV. This function is retained across all bias modes and is essential for precision DC-coupled applications like strain gauge amplifiers.
TLC271MDRG4 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:
- Obsolete
- 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):
- 5 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC271MDRG4 FAQ
1.How can I place an order for TLC271MDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC271MDRG4 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 TLC271MDRG4 reliable?
The price and inventory of TLC271MDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC271MDRG4 is usually 5 days.
3.What payment methods are accepted for TLC271MDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC271MDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC271MDRG4?
TLC271MDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC271MDRG4 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 TLC271MDRG4?
For technical support, including TLC271MDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC271MDRG4 requirements.
6.How does Aetrix verify that TLC271MDRG4 is sourced from the original manufacturer or authorized distributors?
All TLC271MDRG4 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 TLC271MDRG4 meets industry standards.
7.What is the process for return or replacement of TLC271MDRG4?
All TLC271MDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC271MDRG4, 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 TLC271MDRG4 part is unused and in its original packaging.
Return procedure for TLC271MDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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