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Texas Instruments TLC271AIDG4
- Part No.:
- TLC271AIDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC271AIDG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,427
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Product details
Overview
TLC271AIDG4 from Texas Instruments is a programmable low-power LinCMOS™ operational amplifier in an SOIC-8 package, featuring bias-select mode (high/medium/low), 2 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 negative rail-used in precision sensor signal conditioning for industrial temperature monitoring systems.
For engineers reviewing the TLC271AIDG4 datasheet, TLC271AIDG4 pinout, TLC271AIDG4 application, or TLC271AIDG4 equivalent, this page delivers verified electrical parameters, bias-mode tradeoffs, thermal performance across –40°C to 85°C, and real-world design guidance for single-supply transducer interfacing and active filtering.
Technical Context
The TLC271AIDG4 implements a silicon-gate LinCMOS™ process enabling 10¹² Ω typical input impedance and sub-picoampere bias currents. Its three-programmable bias modes directly configure internal current sources to trade off power dissipation (50–3375 µW), slew rate (0.03–3.6 V/µs), and noise density (68–25 nV/√Hz) without external components.
It supports true single-supply operation with common-mode input range extending 0.2 V below ground and output swing to GND. The BIAS SELECT pin accepts three voltage thresholds (GND, midpoint, VDD) to set operating mode, and ESD protection meets MIL-STD-883C, Method 3015.2 (2000 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (max) | 2 mV at 25°C - enables DC-coupled amplification of mV-level thermocouple outputs without nulling circuitry |
| Slew Rate (high-bias) | 3.6 V/µs at VDD = 5 V - supports 100-kHz unity-gain bandwidth for anti-aliasing filter stages |
| Supply Voltage Range | 4 V to 16 V over –40°C to 85°C - compatible with 5 V and 12 V industrial rails and battery-backed systems |
| Input Bias Current (typ) | 0.6 pA at 25°C - minimizes voltage error in high-impedance pH electrode or photodiode interfaces |
| Common-Mode Input Range | Extends 0.2 V below GND - allows direct sensing of signals referenced to negative supply in single-supply configurations |
| Output Swing | Includes negative rail - delivers full dynamic range when driving ADCs with unipolar reference inputs |
| ESD Rating | 2000 V per MIL-STD-883C - reduces need for external protection in factory automation I/O modules |
Pinout & Package
Package: SOIC-8 (D package), surface-mount, tape-and-reel compatible. Pin count: 8. Thermal resistance: 150°C/W (θJA).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OFFSET N1) | Offset null input | Connects to external potentiometer for fine-tuning input offset voltage in precision instrumentation |
| 2 (IN–) | Inverting input | Differential input node with 10¹² Ω impedance; accepts signals down to –0.2 V in single-supply use |
| 3 (IN+) | Non-inverting input | High-impedance input with identical common-mode range as IN–; used for reference or sensor input |
| 4 (GND) | Ground reference | Power and signal return; common node for bias select divider in single-supply applications |
| 5 (BIAS SELECT) | Bias mode control | Voltage level (GND = low, VDD/2 = medium, VDD = high) sets power/performance operating point |
| 6 (VDD) | Positive supply | Accepts 4–16 V; decoupling capacitor required near pin for stability in high-bias mode |
| 7 (OUT) | Amplifier output | Rail-to-rail capable; drives 10 kΩ loads with <50 mV headroom to GND and VDD |
| 8 (OFFSET N2) | Offset null output | Second terminal for external nulling network; used with Pin 1 to trim VIO to <100 µV |
Key Features
| Feature | Design Value |
|---|---|
| Programmable bias-select mode | Selects among three pre-characterized operating points to optimize power vs. speed/noise for each stage in multi-stage signal chains |
| LinCMOS™ process technology | Delivers 10¹² Ω input impedance and <1 pA bias current-critical for high-Z sensor front-ends without guard traces |
| Rail-to-rail output swing | Drives loads to GND with <50 mV drop, maximizing ADC utilization in 0–5 V or 0–3.3 V data acquisition systems |
| Extended common-mode input range | Accepts inputs 0.2 V below GND, enabling direct interface to grounded thermistors or bridge sensors without level-shifting |
| Integrated ESD protection | Withstands 2000 V HBM-reduces board-level TVS requirements in PLC analog input modules |
Applications
| Industrial Sensor Signal Conditioning | Portable Battery-Powered Instrumentation |
|---|---|
Use Scenario: Amplifying low-level mV outputs from RTDs and thermocouples in factory-floor temperature controllers. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with offset trimming capability and low drift over –40°C to 85°C. Use Value: 2 mV max VIO and 1.8 µV/°C tempco enable ±0.5°C accuracy without software calibration across operating range. | Use Scenario: Front-end amplification in handheld multimeters and portable gas detectors powered by two AA cells. IC Role / Device Role / Timing Role: Low-power, single-supply op-amp configured in medium-bias mode for optimal battery life and AC response. Use Value: 525 µW supply current at 5 V enables >1-year runtime on alkaline cells while maintaining 0.4 V/µs slew rate for 10-kHz measurements. |
| Active Filter for Data Acquisition | Analog Front-End for Microcontroller ADCs |
Use Scenario: 2nd-order Sallen-Key low-pass filter preceding 12-bit SAR ADCs in vibration monitoring nodes. IC Role / Device Role / Timing Role: Unity-gain stable amplifier with 1.7 MHz GBW and 46° phase margin in high-bias mode. Use Value: Enables precise cutoff frequency control at 10 kHz with <0.1 dB passband ripple and no external compensation needed. | Use Scenario: Buffering and level-shifting sensor outputs before internal ADCs in Cortex-M4-based edge controllers. IC Role / Device Role / Timing Role: Rail-to-rail output driver matching microcontroller VREF (3.3 V) and providing sink/source current up to ±30 mA. Use Value: Eliminates external level-shifters; output swing to GND ensures full 0–4095 code utilization in unipolar ADC configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC271CDR | Same architecture, C-suffix (0°C to 70°C), 10 mV max VIO, D package | Commercial-temp only; higher offset unsuitable for precision metrology | Select when cost-sensitive consumer applications tolerate wider offset and narrower temperature range |
| TLV2462IDR | Rail-to-rail I/O, 600 µA supply current, 0.6 V/µs slew rate, 2.7–6 V supply | No bias-select; fixed low-power mode; lower supply voltage ceiling | Choose for ultra-low-voltage (3.3 V) designs where programmability is unnecessary and 0.6 V/µs suffices |
Compared with TLC271CDR and TLV2462IDR, the TLC271AIDG4 uniquely balances military-grade temperature range (–40°C to 85°C), programmable bias, and 2 mV precision-making it the only option for industrial field instruments requiring both accuracy and adaptive power management.
Availability
TLC271AIDG4 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, portable instrumentation, active filtering, and microcontroller analog front-ends requiring stable component supply across extended temperature ranges.
Supply support for TLC271AIDG4 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 TLC271 family belongs to TI's precision LinCMOS™ op-amp product line, engineered for low-power, high-input-impedance applications including transducer interfacing, analog computing, and battery-operated measurement systems.
FAQ
What is the maximum input offset voltage specification for TLC271AIDG4 at 25°C?
The TLC271AIDG4 has a maximum input offset voltage of 2 mV at 25°C, as specified in the "Available Options" table for I-suffix devices with A-grade (TLC271AI) in SOIC-8 (D) package. This value is guaranteed across the full –40°C to 85°C operating range, with typical drift of 1.8 µV/°C from 25°C to 85°C. The TLC271AIDG4 maintains this grade under all three bias-select modes.
How does the BIAS SELECT pin function on the TLC271AIDG4?
The BIAS SELECT pin on the TLC271AIDG4 determines operating mode: connecting to GND selects low-bias (50 µW, 0.03 V/µs), to VDD/2 selects medium-bias (525 µW, 0.4 V/µs), and to VDD selects high-bias (3375 µW, 3.6 V/µs). In single-supply systems, a resistive divider is required to generate the midpoint voltage. The pin draws only –1.4 µA at 25°C, minimizing loading on the divider.
Can TLC271AIDG4 operate from a single 3.3-V supply?
No-the TLC271AIDG4 requires a minimum supply voltage of 4 V over its rated –40°C to 85°C temperature range. While some characterization data shows functionality at 3 V for C-suffix (0°C to 70°C) variants, the I-suffix TLC271AIDG4 is not specified or guaranteed below 4 V. For 3.3-V systems, consider TI's TLV2462IDR or similar rail-to-rail op-amps with lower VDD minima.
What is the common-mode input voltage range for TLC271AIDG4 at 5-V supply?
At VDD = 5 V, the TLC271AIDG4 common-mode input voltage range is specified as –0.2 V to 3.5 V over the full –40°C to 85°C operating range. This allows inputs to extend 0.2 V below ground-enabling direct connection to grounded sensors like 2-wire RTDs-while maintaining valid operation up to 3.5 V, leaving 1.5 V headroom to VDD.
Does TLC271AIDG4 support rail-to-rail output swing?
Yes-the TLC271AIDG4 output swings to the negative rail (GND) with ≤50 mV dropout under no-load conditions and ≤50 mV at IOL = 0 across –40°C to 85°C. It also reaches within 1.2 V of VDD (e.g., 3.8 V at VDD = 5 V). This rail-to-rail low-side capability is maintained in all three bias-select modes and is critical for maximizing dynamic range into unipolar ADC references.
TLC271AIDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 900 µV
- 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
TLC271AIDG4 FAQ
1.How can I place an order for TLC271AIDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC271AIDG4 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 TLC271AIDG4 reliable?
The price and inventory of TLC271AIDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC271AIDG4 is usually 5 days.
3.What payment methods are accepted for TLC271AIDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC271AIDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC271AIDG4?
TLC271AIDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC271AIDG4 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 TLC271AIDG4?
For technical support, including TLC271AIDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC271AIDG4 requirements.
6.How does Aetrix verify that TLC271AIDG4 is sourced from the original manufacturer or authorized distributors?
All TLC271AIDG4 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 TLC271AIDG4 meets industry standards.
7.What is the process for return or replacement of TLC271AIDG4?
All TLC271AIDG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC271AIDG4, 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 TLC271AIDG4 part is unused and in its original packaging.
Return procedure for TLC271AIDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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