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Texas Instruments TLC271BCPSRG4
- Part No.:
- TLC271BCPSRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
TLC271BCPSRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,458
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Product details
Overview
TLC271BCPSRG4 from Texas Instruments is a programmable low-power LinCMOS™ operational amplifier with 2-mV max input offset voltage (25°C), bias-select mode for power/performance tuning, and rail-to-rail output swing down to the negative rail. It operates from 3 V to 16 V over 0°C to 70°C, features 10¹² Ω input impedance, 25 nV/√Hz noise (high-bias mode), and supports single-supply sensor signal conditioning in portable instrumentation.
For engineers reviewing the TLC271BCPSRG4 datasheet, TLC271BCPSRG4 pinout, TLC271BCPSRG4 application, or TLC271BCPSRG4 equivalent, key selection criteria include its programmable bias modes (high/medium/low), guaranteed 2-mV VIO grade, SOIC-8 packaging, and compatibility with low-voltage, low-power analog front-ends requiring stable DC precision and wide supply range.
Technical Context
The TLC271BCPSRG4 implements a silicon-gate LinCMOS™ process enabling high input impedance (10¹² Ω typ), ultra-low input bias current (0.6 pA typ at 25°C), and latch-up immunity. Its bias-select pin allows dynamic configuration of three operating modes: high-bias (3.6 V/µs slew rate, 1.7 MHz unity-gain bandwidth), medium-bias (0.4 V/µs, 0.5 MHz), and low-bias (0.03 V/µs, 0.09 MHz).
It supports common-mode input voltage extending below the negative rail (–0.2 V at VDD = 5 V), delivers rail-swing output (VOL ≤ 50 mV, VOH ≥ 3.2 V @ VDD = 5 V), and maintains 80 dB CMRR and 95 dB PSRR across temperature - critical for precision transducer interfacing and battery-powered data acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (max) | 2 mV at 25°C - ensures ≤2 mV DC error in precision gain stages without trimming |
| Supply Voltage Range | 3 V to 16 V - enables direct operation from single Li-ion (3.0–4.2 V) or multi-cell alkaline rails |
| Input Impedance | 10¹² Ω typical - minimizes loading on high-Z sources like piezoelectric sensors or pH electrodes |
| Input Noise Density | 25 nV/√Hz at 1 kHz (high-bias) - supports low-noise amplification of µV-level bio-signals |
| Slew Rate (high-bias) | 3.6 V/µs - sufficient for 100-kHz full-power bandwidth with 1-Vpp output |
| Common-Mode Input Range | Extends to –0.2 V below negative rail - allows ground-referenced inputs in single-supply systems |
| Output Voltage Swing | VOL ≤ 50 mV, VOH ≥ 3.2 V @ VDD = 5 V - delivers near-rail output drive into 10-kΩ loads |
Pinout & Package
Package: SOIC-8 (D package), tape-and-reel (R suffix), 150 mil width, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OFFSET N1) | Offset null input | Connects to external potentiometer wiper for manual VIO trimming |
| 2 (IN–) | Inverting input | Differential input node; accepts signals down to –0.2 V below GND |
| 3 (IN+) | Non-inverting input | Differential input node; same common-mode range as IN– |
| 4 (GND) | Negative supply / reference | Return path for supply and signal; bias-select voltage referenced to this node |
| 5 (BIAS SELECT) | Mode control input | Three-state logic: GND = high-bias, VDD/2 = medium-bias, VDD = low-bias |
| 6 (VDD) | Positive supply | Accepts 3–16 V; internal regulation enables stable operation across wide input range |
| 7 (OUT) | Amplifier output | Capable of sourcing/sinking ±30 mA; swings within 50 mV of rails under load |
| 8 (OFFSET N2) | Offset null input | Second terminal for external nulling circuit; used with Pin 1 for VIO adjustment |
Key Features
| Feature | Design Value |
|---|---|
| Bias-select programming | Three user-configurable operating modes trade off slew rate (3.6 → 0.03 V/µs), bandwidth (1.7 → 0.09 MHz), and quiescent current (3.4 → 0.05 mW) |
| Rail-to-rail output | Output drives within 50 mV of GND and within 1.2 V of VDD @ 10-kΩ load - maximizes dynamic range in low-voltage systems |
| ESD protection | Withstands 2000 V per MIL-STD-883C Method 3015.2 - reduces handling sensitivity in production environments |
| Input offset drift | 0.1 µV/month (including first 30 days) - ensures long-term calibration stability in unattended monitoring equipment |
| Latch-up immunity | Designed-in immunity to latch-up under transient overcurrent - improves reliability in noisy industrial I/O modules |
Applications
| Portable Gas Sensor Interface | Low-Power Data Logger Front-End |
|---|---|
Use Scenario: Amplifying microamp-level current from electrochemical gas cells powered by coin-cell batteries. IC Role / Device Role / Timing Role: Transimpedance amplifier with programmable bias to optimize SNR vs. battery life. Use Value: Low 0.6-pA input bias avoids signal loss; 2-mV VIO grade eliminates need for auto-zero circuitry; single 3-V supply simplifies power architecture. | Use Scenario: Conditioning thermistor and RTD signals in remote environmental monitors running for years on AA batteries. IC Role / Device Role / Timing Role: Precision buffer and gain stage preceding SAR ADC, operating in low-bias mode during sleep cycles. Use Value: 0.05-mW low-bias mode extends battery life; rail-swing output ensures full ADC utilization; –0.2-V input range accommodates grounded sensor configurations. |
| Medical ECG Signal Conditioning | Industrial Process Controller Analog I/O |
Use Scenario: First-stage amplification of µV-level biopotentials with high common-mode rejection in battery-operated handheld ECG units. IC Role / Device Role / Timing Role: Instrumentation-grade op-amp in differential input stage, configured for high-bias mode during acquisition. Use Value: 25-nV/√Hz noise preserves signal integrity; 80-dB CMRR suppresses 50/60-Hz interference; 10¹²-Ω input prevents electrode polarization errors. | Use Scenario: Isolated 4–20-mA loop receiver and voltage-level translator in PLC analog input modules. IC Role / Device Role / Timing Role: Active filter and level-shifter between isolation barrier and ADC, operating across –40°C to 70°C industrial range. Use Value: Guaranteed 2-mV VIO ensures <±0.01% FS error; 16-V max supply tolerates transient surges on field wiring; SOIC-8 footprint fits dense PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC271CP | Same 2-mV VIO grade and SOIC-8 package, but non-tape-and-reel (bulk) packaging; identical electrical specs. | No reel support - unsuitable for automated SMT assembly; otherwise functionally interchangeable. | Select TLC271CP only for prototyping or low-volume hand-soldered builds where tape-and-reel is unnecessary. |
| TLV2461CDR | Lower VIO (1.5 mV max), rail-to-rail input/output, but no bias-select feature; higher quiescent current (550 µA vs. 675 µA max in high-bias mode). | Fixed performance profile - cannot trade bandwidth for power savings; better for static low-noise apps, not adaptive systems. | Choose TLV2461CDR when absolute lowest offset and RRO are mandatory, and programmability is not required. |
Compared with TLC271CP and TLV2461CDR, the TLC271BCPSRG4 uniquely combines factory-trimmed 2-mV precision, SOIC-8 tape-and-reel delivery, and real-time bias-mode reconfiguration - making it optimal for volume-manufactured, battery-sensitive systems requiring both accuracy and power adaptability.
Availability
TLC271BCPSRG4 is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, battery-powered data loggers, and precision analog front-ends requiring stable component supply across extended product lifecycles.
Supply support for TLC271BCPSRG4 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-amps and low-power design.
The TLC271 family was engineered for cost-sensitive, low-power analog signal conditioning in battery-operated and industrial systems - emphasizing programmable performance, rail-swing capability, and robustness across wide temperature and supply ranges.
FAQ
What is the maximum supply voltage rating for the TLC271BCPSRG4?
The TLC271BCPSRG4 has an absolute maximum supply voltage of 18 V, with recommended operation from 3 V to 16 V across its 0°C to 70°C temperature range. Exceeding 16 V may compromise long-term reliability, while operation below 3 V risks degraded AC performance and reduced output swing. The device's LinCMOS™ process ensures stable biasing even at minimum 3-V operation, making it suitable for single-cell lithium or alkaline battery systems.
How does the BIAS SELECT pin configure operating modes on the TLC271BCPSRG4?
The BIAS SELECT pin on the TLC271BCPSRG4 sets one of three bias levels: connecting to GND selects high-bias mode (3.6 V/µs slew rate, 1.7 MHz bandwidth), to VDD/2 selects medium-bias (0.4 V/µs, 0.5 MHz), and to VDD selects low-bias (0.03 V/µs, 0.09 MHz). This pin is referenced to GND (Pin 4); voltage dividers must use high-value resistors (>1 MΩ) to minimize current draw, especially in battery-powered TLC271BCPSRG4 designs.
Does the TLC271BCPSRG4 support true rail-to-rail input operation?
The TLC271BCPSRG4 does not support rail-to-rail input - its common-mode input range extends to –0.2 V below the negative rail (GND) and up to VDD – 1.2 V at VDD = 5 V, but does not reach the positive rail. However, it does provide rail-to-rail output swing (within 50 mV of GND and within 1.2 V of VDD), which is confirmed in the datasheet's VOH/VOL specifications. This asymmetric input range is optimized for single-supply sensor interfaces where the negative rail is grounded.
What is the input offset voltage drift specification for the TLC271BCPSRG4 over time?
The TLC271BCPSRG4 exhibits an input offset voltage drift of typically 0.1 µV per month, including the first 30 days of operation. This long-term stability is enabled by Texas Instruments' LinCMOS™ silicon-gate process and is critical for applications such as unattended environmental monitors or calibration equipment where periodic recalibration is impractical. The drift value is measured under standard lab conditions and remains consistent across the device's 0°C to 70°C operating range.
Can the TLC271BCPSRG4 be used in circuits requiring offset nulling?
Yes, the TLC271BCPSRG4 provides dedicated OFFSET N1 (Pin 1) and OFFSET N2 (Pin 8) terminals for external offset nulling using a 10-kΩ potentiometer. This capability allows users to reduce initial VIO error below the 2-mV maximum grade, achieving sub-millivolt DC accuracy in high-precision applications like weigh scales or analytical instrumentation. Nulling is performed with VDD applied and output at mid-supply, per the manufacturer's recommended procedure in the TLC271BCPSRG4 datasheet.
TLC271BCPSRG4 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:
- 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:
- 390 µV
- 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
TLC271BCPSRG4 FAQ
1.How can I place an order for TLC271BCPSRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC271BCPSRG4 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 TLC271BCPSRG4 reliable?
The price and inventory of TLC271BCPSRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC271BCPSRG4 is usually 5 days.
3.What payment methods are accepted for TLC271BCPSRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC271BCPSRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC271BCPSRG4?
TLC271BCPSRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC271BCPSRG4 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 TLC271BCPSRG4?
For technical support, including TLC271BCPSRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC271BCPSRG4 requirements.
6.How does Aetrix verify that TLC271BCPSRG4 is sourced from the original manufacturer or authorized distributors?
All TLC271BCPSRG4 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 TLC271BCPSRG4 meets industry standards.
7.What is the process for return or replacement of TLC271BCPSRG4?
All TLC271BCPSRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC271BCPSRG4, 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 TLC271BCPSRG4 part is unused and in its original packaging.
Return procedure for TLC271BCPSRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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