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Texas Instruments TLC271CPS
- Part No.:
- TLC271CPS
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
TLC271CPS.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:135
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Product details
Overview
TLC271CPS from Texas Instruments is a programmable low-power LinCMOS™ operational amplifier in an 8-pin SOIC package (PS suffix), featuring bias-select functionality for tradeoff control between power dissipation and AC performance. It delivers 3.6 V/µs slew rate, 1.7 MHz unity-gain bandwidth, 25 nV/√Hz input noise at 1 kHz, 10¹² Ω input impedance, and rail-to-rail output swing down to the negative rail - enabling precision signal conditioning in battery-powered sensor interfaces and portable instrumentation.
For engineers reviewing the TLC271CPS datasheet, TLC271CPS pinout, TLC271CPS application, or TLC271CPS equivalent, key selection criteria include its three-programmable bias modes (high/medium/low), wide 3–16 V single-supply operation, –0.2 V to 3.5 V common-mode input range extending below ground, and guaranteed 2 mV max input offset voltage at 25°C for the 'C' grade.
Technical Context
The TLC271CPS implements a silicon-gate LinCMOS™ process architecture that enables ultra-high input impedance and low input bias current (0.6 pA typ) while maintaining latch-up immunity and ESD protection up to 2000 V. Its bias-select pin (Pin 5) accepts three voltage thresholds to configure internal current sources for high-speed (3.6 V/µs), medium-power (0.4 V/µs), or ultra-low-power (0.03 V/µs) operation - each with distinct tradeoffs in slew rate, noise, bandwidth, and supply current.
This device operates across 0°C to 70°C (C-suffix), supports single-supply configurations as low as 3 V, and features a common-mode input voltage range that includes the negative rail - making it suitable for transducer interfacing and active filtering where ground-referenced inputs are required without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 16 V - enables direct use with single Li-ion (3.3 V), dual AA (3 V), or industrial 12 V rails without regulation |
| Input Offset Voltage (max) | 2 mV at 25°C - ensures ≤2 mV DC error in precision DC-coupled amplification stages |
| Slew Rate (high-bias) | 3.6 V/µs - supports ≥100 kHz full-power bandwidth for 1 Vpp signals into 10 kΩ load |
| Unity-Gain Bandwidth | 1.7 MHz - allows stable closed-loop gain ≥10 up to ~170 kHz with adequate phase margin |
| Input Impedance | 10¹² Ω - minimizes loading on high-impedance sources like piezoelectric sensors or pH electrodes |
| Input Noise Density | 25 nV/√Hz at 1 kHz - critical for low-level signal amplification in medical or environmental sensing |
| Common-Mode Input Range | –0.2 V to 3.5 V (at VDD = 5 V) - permits input signals below ground in single-supply systems |
Pinout & Package
Package: 8-pin SOIC (PS suffix), surface-mount, JEDEC MS-012AC compliant, 1.27 mm pitch, body size 4.9 × 6.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OFFSET N1) | Offset null input 1 | Connects to external potentiometer wiper for manual input offset trimming |
| 2 (IN–) | Inverting input | Differential input node; high-impedance CMOS gate input |
| 3 (IN+) | Non-inverting input | Differential input node; supports common-mode voltage down to –0.2 V |
| 4 (GND) | Negative supply / reference | Return path for supply and signal; common-mode range extends below this pin |
| 5 (BIAS SELECT) | Bias mode control | Voltage level sets high/medium/low bias current: GND = high, VDD/2 = medium, VDD = low |
| 6 (VDD) | Positive supply | Accepts 3–16 V; internal regulation not required |
| 7 (OUT) | Amplifier output | Capable of rail-to-rail swing to GND; drives ≥10 kΩ loads |
| 8 (OFFSET N2) | Offset null input 2 | Second terminal of external trim potentiometer for offset calibration |
Key Features
| Feature | Design Value |
|---|---|
| Programmable bias-select mode | Selects among three discrete bias currents to optimize speed vs. power: 3.6 V/µs @ 1.6 mA or 0.03 V/µs @ 50 µA |
| Rail-to-rail output swing | Drives to GND (0 V) and within 0.2 V of VDD - eliminates need for negative supply in many signal chains |
| Ultra-low input bias current | 0.6 pA typical at 25°C - preserves signal integrity from megohm-range sources like photodiodes or capacitive sensors |
| ESD protection | 2000 V HBM per MIL-STD-883C Method 3015.2 - reduces handling sensitivity during PCB assembly |
| Designed-in latch-up immunity | Robust against transient overvoltage and surge currents up to –100 mA - enhances reliability in noisy industrial environments |
Applications
| Strain Gauge Signal Conditioning | Portable ECG Front-End |
|---|---|
Use Scenario: Amplifying microvolt-level Wheatstone bridge outputs from load cells or pressure sensors in battery-powered test equipment. IC Role / Device Role / Timing Role: Precision instrumentation amplifier stage with offset trimming capability and single-supply compatibility. Use Value: 2 mV max VIO and 25 nV/√Hz noise enable resolution of <10 µV signals; rail-to-rail output maximizes ADC dynamic range. | Use Scenario: Low-noise, low-power amplification of biopotential signals in handheld cardiac monitors. IC Role / Device Role / Timing Role: First-stage gain block with programmable bias to extend battery life while preserving diagnostic fidelity. Use Value: 0.03 V/µs low-bias mode draws only 50 µW - extends operating time in coin-cell-powered devices without sacrificing DC accuracy. |
| Active Low-Pass Filter | Remote Sensor Transmitter |
Use Scenario: 2nd-order Sallen-Key anti-aliasing filter preceding SAR ADCs in data acquisition modules. IC Role / Device Role / Timing Role: Unity-gain stable voltage follower and filter integrator with 1.7 MHz bandwidth. Use Value: Phase margin ≥46° ensures monotonic step response; 10¹² Ω input prevents filter pole shift from op-amp loading. | Use Scenario: Signal conditioning and 4–20 mA loop driver interface for temperature/humidity sensors in inaccessible locations. IC Role / Device Role / Timing Role: Buffered sensor output stage with wide 3–16 V supply tolerance for variable loop voltage. Use Value: Operates down to 3 V supply - maintains functionality even as loop voltage sags near minimum specification limits. |
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 8-pin PDIP; identical bias-select architecture and specs per channel | Used when two matched amplifiers are needed in same package (e.g., differential input + reference buffer) | Select TLC272CP when board space allows DIP and dual-channel functionality improves system integration |
| TLV2461CP | Single-supply rail-to-rail I/O op-amp; no bias-select feature; 6.4 V/µs slew rate; 2.2 MHz GBW; higher quiescent current (550 µA) | Preferred for fixed high-speed applications where programmability is unnecessary and rail-to-rail input is required | Choose TLV2461CP only if rail-to-rail input (not just output) is mandatory and bias flexibility is not needed |
Compared with TLC272CP and TLV2461CP, the TLC271CPS uniquely provides user-configurable bias modes in a compact SOIC package - delivering optimal power/performance tradeoffs for portable and energy-constrained designs where dynamic adaptation matters.
Availability
TLC271CPS is available at Aetrix Electronics and suitable for portable instrumentation, remote sensor nodes, and battery-powered medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC271CPS 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 leadership in precision analog ICs and power management solutions.
The TLC271CPS belongs to TI's LinCMOS™ programmable op-amp product line, designed specifically for applications demanding selectable performance modes, ultra-low input current, and robust operation in single-supply, low-voltage environments.
FAQ
What is the maximum supply voltage rating for the TLC271CPS?
The absolute maximum supply voltage for the TLC271CPS is 18 V, but the recommended operating range is 3 V to 16 V across 0°C to 70°C. Exceeding 16 V may compromise long-term reliability or parametric stability, and operation above 18 V risks permanent damage per the datasheet's absolute maximum ratings table.
How does the BIAS SELECT pin function on the TLC271CPS?
The BIAS SELECT pin (Pin 5) configures internal bias current by voltage level: GND selects high-bias mode (3.6 V/µs, 1.6 mA IDD), VDD/2 selects medium-bias (0.4 V/µs, 525 µA), and VDD selects low-bias (0.03 V/µs, 50 µA). This allows dynamic optimization of speed versus power without changing external components - a core feature of the TLC271CPS design.
Can the TLC271CPS operate with input voltages below ground?
Yes - the TLC271CPS supports a common-mode input voltage range extending to –0.2 V below GND (at VDD = 5 V), verified across its full 0°C to 70°C operating range. This enables true single-supply operation with ground-referenced sensors, eliminating the need for level-shifting circuitry in the TLC271CPS signal path.
What is the purpose of the OFFSET N1 and OFFSET N2 pins on the TLC271CPS?
The OFFSET N1 (Pin 1) and OFFSET N2 (Pin 8) pins provide access to the amplifier's internal offset nulling network. Connecting a 10-kΩ potentiometer between them, with the wiper grounded, allows manual trimming of input offset voltage to <100 µV - essential for high-accuracy DC-coupled applications using the TLC271CPS.
Is the TLC271CPS pin-compatible with other members of the TLC27x family?
Yes - the TLC271CPS shares identical 8-pin SOIC (PS) pinout with all single-channel TLC271 variants (e.g., TLC271BCPS, TLC271IPS), including matching pin functions for OFFSET N1/N2, BIAS SELECT, IN+/IN–, GND, VDD, and OUT. This allows drop-in replacement across grades without layout changes, provided temperature and offset specifications meet system requirements.
TLC271CPS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- 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
TLC271CPS FAQ
1.How can I place an order for TLC271CPS through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC271CPS 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 TLC271CPS reliable?
The price and inventory of TLC271CPS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC271CPS is usually 5 days.
3.What payment methods are accepted for TLC271CPS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC271CPS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC271CPS?
TLC271CPS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC271CPS 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 TLC271CPS?
For technical support, including TLC271CPS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC271CPS requirements.
6.How does Aetrix verify that TLC271CPS is sourced from the original manufacturer or authorized distributors?
All TLC271CPS 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 TLC271CPS meets industry standards.
7.What is the process for return or replacement of TLC271CPS?
All TLC271CPS units undergo pre-shipment inspection (PSI). If there is an issue with TLC271CPS, 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 TLC271CPS part is unused and in its original packaging.
Return procedure for TLC271CPS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC271CPS Tags
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