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Texas Instruments TLC271CPSR
- Part No.:
- TLC271CPSR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
TLC271CPSR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:215
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Product details
Overview
TLC271CPSR from Texas Instruments is a programmable low-power LinCMOS™ operational amplifier in an 8-pin small-outline package (SOIC), featuring bias-select mode for configurable power/performance trade-offs, 2 mV max input offset voltage (25°C), 3.6 V/µs slew rate (high-bias mode), and rail-to-rail output swing down to negative rail - used in precision sensor signal conditioning and battery-powered instrumentation.
For engineers reviewing the TLC271CPSR datasheet, TLC271CPSR pinout, TLC271CPSR application, or TLC271CPSR equivalent, this page delivers verified electrical specs, validated pin functions, real-world use cases in single-supply transducer interfaces, and two confirmed alternative parts with documented performance and temperature-range differences.
Technical Context
The TLC271CPSR implements a silicon-gate LinCMOS™ process enabling 10¹² Ω typical input impedance and sub-picoampere input bias current. Its three-mode bias-select architecture (HIGH/MEDIUM/LOW) directly controls internal current sources to adjust slew rate (3.6 / 0.4 / 0.03 V/µs), unity-gain bandwidth (1.7 / 0.5 / 0.09 MHz), and power dissipation (3.4 / 0.5 / 0.05 mW) without external components.
It supports true single-supply operation with common-mode input range extending 0.2 V below ground (at VDD = 5 V), output swing to negative rail, and built-in ESD protection rated to 2000 V per MIL-STD-883C Method 3015.2 - all within its 0°C to 70°C industrial operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 16 V - enables direct interface with 3.3 V, 5 V, and 12 V systems without level-shifting. |
| Input Offset Voltage (max) | 2 mV at 25°C - ensures ≤20 mV error in 10× gain stages across 0°C–70°C industrial range. |
| Slew Rate (high-bias) | 3.6 V/µs - supports ≥300 kHz full-power bandwidth for 10 Vpp signals in active filter designs. |
| Input Bias Current (typ) | 0.6 pA at 25°C - minimizes voltage error in high-impedance pH or photodiode sensor interfaces. |
| Common-Mode Input Range | Extends 0.2 V below negative rail - allows direct sensing of ground-referenced signals in single-supply configurations. |
| Output Swing | Includes negative rail - eliminates need for dual supplies in portable data loggers and remote sensors. |
| ESD Rating | 2000 V HBM - meets basic handling robustness requirements for assembly in non-classified environments. |
Pinout & Package
Package: SOIC-8 (D package), 3.9 mm × 4.9 mm body, 1.27 mm pitch, tape-and-reel compatible (R suffix).
| 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; accepts signals within common-mode range extending below GND. |
| 3 (IN+) | Non-inverting input | Differential input node; matched impedance and noise performance to IN–. |
| 4 (GND) | Negative supply / reference | Return path for supply and signal; common-mode range extends 0.2 V below this pin. |
| 5 (BIAS SELECT) | Bias mode control | Voltage level (GND = low, VDD/2 = medium, VDD = high) sets internal current source for ac performance/power trade-off. |
| 6 (VDD) | Positive supply | Accepts 3–16 V; powers all internal circuitry including bias-select logic and output stage. |
| 7 (OUT) | Amplifier output | Capable of sourcing/sinking ±30 mA; swings to negative rail and up to VDD – 1.2 V (typ). |
| 8 (OFFSET N2) | Offset null input | Second terminal of external offset-null potentiometer; completes trimming network with Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| Bias-select mode | Three user-configurable operating points (HIGH/MEDIUM/LOW) enable dynamic optimization of speed, noise, and quiescent current without changing hardware. |
| Rail-to-rail output | Output drives to GND and within 1.2 V of VDD - maximizes dynamic range in 3.3 V or 5 V single-supply systems. |
| Ultra-low input bias current | 0.6 pA typical at 25°C - preserves signal integrity in megohm-level sensor front-ends like thermistors and piezoelectric elements. |
| Wide supply range | 3 V to 16 V operation - supports legacy 12 V industrial rails and modern 3.3 V microcontroller domains with one BOM item. |
| Input range below GND | Common-mode extends 0.2 V below GND at VDD = 5 V - enables direct amplification of ground-referenced differential signals without level shifters. |
Applications
| Transducer Signal Conditioning | Portable Battery-Powered Instrumentation |
|---|---|
|
Use Scenario: Amplifying low-level mV outputs from load cells, strain gauges, or thermocouples in industrial weigh scales. IC Role / Device Role: Precision DC-coupled gain stage with offset trimming capability and low drift over temperature. Use Value: 2 mV max VIO and 0.1 µV/month drift ensure long-term calibration stability without periodic recalibration. |
Use Scenario: Front-end amplification in handheld multimeters or environmental data loggers powered by coin-cell batteries. IC Role / Device Role: Low-quiescent-current op-amp supporting single-supply operation and rail-to-rail output swing. Use Value: 0.05 mW power in low-bias mode extends battery life beyond 1 year while maintaining usable bandwidth. |
| Active Filter Design | Analog Sensor Interface for Microcontrollers |
|
Use Scenario: Implementing 2nd-order Sallen-Key low-pass filters for anti-aliasing before ADC sampling in motor control systems. IC Role / Device Role: Unity-gain stable amplifier with 1.7 MHz bandwidth (high-bias) and 46° phase margin. Use Value: Configurable bias mode allows tuning filter Q-factor and settling time without redesigning PCB layout. |
Use Scenario: Buffering and scaling analog outputs from gas sensors or humidity ICs into 0–3.3 V range for ESP32 or STM32 ADC inputs. IC Role / Device Role: High-input-impedance buffer with common-mode range including GND and output swing to GND. Use Value: Eliminates need for external level-shifting circuitry, reducing BOM count and board area in space-constrained modules. |
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 |
|---|---|---|---|
| TLC272CP | Dual-channel version in PDIP-8; identical bias-select architecture, same 2 mV VIO grade, but higher IDD (1.3 mA vs 0.7 mA for TLC271CPSR at 5 V). | Used where dual amplifiers are needed on same board; not suitable for space-constrained single-amplifier layouts requiring SOIC-8 footprint. | Select when dual amplification is required and through-hole assembly is acceptable. |
| TLV2461CDR | Single rail-to-rail input/output op-amp in SOIC-8; no bias-select mode; 0.15 mV VIO (lower), but only 0.6 V/µs slew rate and 2.2 MHz GBW - fixed performance. | Preferred for ultra-low-offset, low-noise applications where adjustable speed/power isn't needed; lacks programmability. | Select when guaranteed low offset and rail-to-rail I/O are critical, and fixed low-power operation suffices. |
Compared with TLC272CP and TLV2461CDR, the TLC271CPSR uniquely provides user-selectable ac performance via a single external voltage on the BIAS SELECT pin - enabling one hardware design to serve multiple signal-chain bandwidth requirements without component changes.
Availability
TLC271CPSR is available at Aetrix Electronics and suitable for transducer interfacing, portable instrumentation, active filtering, and microcontroller analog front-end applications requiring stable component supply and long-lifecycle support.
Supply support for TLC271CPSR 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 decades of heritage in precision op-amp design and manufacturing.
The TLC271 product line was engineered for cost-sensitive, low-power industrial and instrumentation applications requiring programmable performance, wide supply range, and robust single-supply operation - leveraging LinCMOS™ technology for superior input impedance and offset stability.
FAQ
What is the maximum supply voltage rating for the TLC271CPSR?
The absolute maximum supply voltage for the TLC271CPSR is 18 V, though the recommended operating range is 3 V to 16 V across its 0°C to 70°C temperature grade. Operation above 16 V risks exceeding safe power dissipation limits and may degrade long-term reliability, especially in high-temperature ambient conditions.
How does the BIAS SELECT pin function on the TLC271CPSR?
The BIAS SELECT pin on the TLC271CPSR determines operating mode: grounding it selects LOW bias (0.05 mW, 0.03 V/µs), connecting to VDD/2 selects MEDIUM bias (0.5 mW, 0.4 V/µs), and tying to VDD selects HIGH bias (3.4 mW, 3.6 V/µs). This pin configures internal current sources without external resistors or digital control lines.
Can the TLC271CPSR operate with a single 3.3 V supply?
Yes - the TLC271CPSR supports single-supply operation down to 3 V. At 3.3 V, it maintains rail-to-rail output swing (to GND and ~2.1 V), common-mode input range extending 0.2 V below GND, and functional bias-select modes, making it suitable for direct integration with 3.3 V microcontrollers and sensors.
What is the purpose of the OFFSET N1 and OFFSET N2 pins on the TLC271CPSR?
Pins 1 (OFFSET N1) and 8 (OFFSET N2) form a dedicated offset-null interface. Connecting a 10 kΩ potentiometer between them, with its wiper tied to VDD or GND depending on polarity, allows manual trimming of input offset voltage to <100 µV - critical for DC-precision applications like weigh scale front-ends.
Is the TLC271CPSR pin-compatible with other members of the TLC271 family?
Yes - all TLC271 variants (including TLC271ACPSR and TLC271BCPSR) share identical SOIC-8 pinout, bias-select functionality, and electrical architecture. Only input offset voltage grade (2 mV, 5 mV, or 10 mV) and temperature range differ; the TLC271CPSR is the 2 mV/0°C–70°C variant in SOIC-8 packaging.
TLC271CPSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-SO
TLC271CPSR FAQ
1.How can I place an order for TLC271CPSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC271CPSR 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 TLC271CPSR reliable?
The price and inventory of TLC271CPSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC271CPSR is usually 5 days.
3.What payment methods are accepted for TLC271CPSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC271CPSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC271CPSR?
TLC271CPSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC271CPSR 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 TLC271CPSR?
For technical support, including TLC271CPSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC271CPSR requirements.
6.How does Aetrix verify that TLC271CPSR is sourced from the original manufacturer or authorized distributors?
All TLC271CPSR 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 TLC271CPSR meets industry standards.
7.What is the process for return or replacement of TLC271CPSR?
All TLC271CPSR units undergo pre-shipment inspection (PSI). If there is an issue with TLC271CPSR, 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 TLC271CPSR part is unused and in its original packaging.
Return procedure for TLC271CPSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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