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Texas Instruments TLC271BIP
- Part No.:
- TLC271BIP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC271BIP.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,963
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Product details
Overview
TLC271BIP from Texas Instruments is a programmable low-power LinCMOS™ operational amplifier with 2 mV max input offset voltage, bias-select mode (high/medium/low), and operation from 4 V to 16 V over –40°C to 85°C. It features rail-to-rail output swing, 10¹² Ω input impedance, and 25 nV/√Hz input noise in high-bias mode - used in precision sensor signal conditioning and battery-powered instrumentation.
For engineers reviewing the TLC271BIP datasheet, TLC271BIP pinout, TLC271BIP application, or TLC271BIP equivalent, key selection criteria include its programmable bias modes for tradeoffs between slew rate (3.6 V/µs), power dissipation (525 µW typical), noise performance, and temperature-stable offset voltage drift (0.1 µV/month).
Technical Context
The TLC271BIP implements a silicon-gate LinCMOS™ process enabling ultra-high input impedance and low input bias current (0.6 pA typ at 25°C). Its bias-select architecture uses an external voltage on the BIAS SELECT pin to configure internal current sources, directly controlling slew rate, unity-gain bandwidth (1.7 MHz), and noise density across three discrete operating modes.
Input common-mode range extends below the negative rail (GND), supporting single-supply operation down to 4 V. Output swings to GND and within 1.2 V of VDD under 10 kΩ load, with ESD protection rated to 2000 V per MIL-STD-883C Method 3015.2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | Max 2 mV at 25°C - enables DC-coupled precision amplification without manual nulling in low-gain stages |
| Supply Voltage Range | 4 V to 16 V over –40°C to 85°C - supports industrial single-supply systems and wide-input battery rails |
| Input Impedance | 10¹² Ω typical - minimizes loading on high-impedance sources like piezoelectric sensors or pH electrodes |
| Slew Rate (High Bias) | 3.6 V/µs at VDD = 5 V - sufficient for 100 kHz full-power bandwidth with 1 Vpp output |
| Input Noise Density | 25 nV/√Hz at 1 kHz (high-bias) - critical for low-level transducer signal integrity |
| Power Dissipation (Typ) | 525 µW in medium-bias mode - extends battery life in portable data loggers and remote sensors |
| Common-Mode Input Range | Extends 0.2 V below GND - allows direct interfacing to bipolar signals in single-supply configurations |
Pinout & Package
Package: Plastic DIP (P) with 8 leads, through-hole mounting, JEDEC MS-001 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OFFSET N1) | Offset null adjustment terminal | Connects to external potentiometer for fine-tuning input offset voltage in precision applications |
| 2 (IN–) | Inverting input | Differential input node with 10¹² Ω impedance; accepts signals down to –0.2 V relative to GND |
| 3 (IN+) | Non-inverting input | Differential input node matched to IN–; common-mode range includes negative rail |
| 4 (GND) | Ground reference | System ground connection; serves as return path for bias-select divider and offset null circuitry |
| 5 (BIAS SELECT) | Bias configuration control | Voltage level (GND = low bias, VDD/2 = medium, VDD = high) selects internal current source for ac performance vs. power tradeoff |
| 6 (VDD) | Positive supply | Primary power input; supports 4–16 V operation with internal regulation for stable biasing |
| 7 (OUT) | Amplifier output | Class-AB output stage drives ≥10 kΩ loads; swings to GND and within 1.2 V of VDD |
| 8 (OFFSET N2) | Offset null adjustment terminal | Second terminal for external nulling potentiometer; used with Pin 1 to balance input stage mismatch |
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 reaches GND and delivers ≥3.8 V into 10 kΩ at VDD = 5 V - maximizes dynamic range in single-supply systems |
| Input offset voltage drift | 0.1 µV/month including first 30 days - ensures long-term calibration stability in unattended monitoring equipment |
| ESD protection | 2000 V HBM rating per MIL-STD-883C - reduces handling sensitivity and field-failure risk in assembly and end-use |
| Latch-up immunity | Designed-in immunity to latch-up under ±100 mA surge currents - enhances robustness in noisy industrial environments |
Applications
| Strain Gauge Signal Conditioning | Portable pH Meter Front-End |
|---|---|
Use Scenario: Amplifying microvolt-level Wheatstone bridge outputs from metal foil strain gauges in structural health monitoring. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier stage with offset nulling and low-drift gain. Use Value: 2 mV max VIO and 0.1 µV/month drift ensure measurement accuracy remains within ±0.05% FS over 12 months without recalibration. | Use Scenario: Buffering and amplifying high-impedance glass electrode signals (≥100 MΩ) in handheld pH meters. IC Role / Device Role / Timing Role: High-input-impedance voltage follower with rail-to-rail output for ADC interface. Use Value: 10¹² Ω input impedance prevents signal attenuation; single-supply 4–16 V operation enables direct use of 9 V batteries. |
| Thermocouple Cold-Junction Compensation | Battery-Powered Data Logger |
Use Scenario: Measuring cold-junction temperature via RTD or thermistor in Type-K thermocouple systems. IC Role / Device Role / Timing Role: Low-power, low-noise signal conditioner for analog temperature sensor output before digitization. Use Value: Medium-bias mode delivers 0.4 V/µs slew rate and 525 µW dissipation - extends 2xAA battery life to >2 years in sleep-active cycling. | Use Scenario: Analog front-end for multi-channel environmental sensing (temp/humidity/pressure) in remote IoT nodes. IC Role / Device Role / Timing Role: Programmable gain and filtering stage with configurable bias for adaptive power management. Use Value: Bias-select allows switching to low-bias mode (<50 µW) during idle periods while retaining 480 V/mV open-loop gain for fast wake-up response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC271ACP | 5 mV max input offset voltage; otherwise identical pinout, bias-select, and temperature range | Lower precision requirement; acceptable in non-critical gain stages or AC-coupled paths | Select when VIO ≤ 5 mV suffices and cost reduction is prioritized over DC accuracy |
| TLV2462IP | Rail-to-rail input/output; 600 µA supply current; no bias-select; 2.7–6 V supply only | Requires split or higher-voltage rail for >6 V operation; lacks programmability for power/performance tuning | Choose for modern low-voltage designs where rail-to-rail I/O is mandatory and fixed bias is acceptable |
Compared with TLC271ACP and TLV2462IP, the TLC271BIP provides the lowest guaranteed input offset (2 mV) and unique bias-select flexibility across 4–16 V operation - making it optimal for legacy industrial systems requiring long-term DC stability and adaptive power management.
Availability
TLC271BIP is available at Aetrix Electronics and suitable for strain gauge interfaces, portable pH meters, thermocouple compensation circuits, and battery-powered data loggers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TLC271BIP 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 for industrial, automotive, and personal electronics markets.
The TLC271 family belongs to TI's precision LinCMOS™ op-amp product line, designed specifically for applications demanding low power, high input impedance, and stable DC performance in harsh or resource-constrained environments.
FAQ
What is the maximum supply voltage rating for the TLC271BIP?
The absolute maximum supply voltage for the TLC271BIP is 18 V. However, the recommended operating range is 4 V to 16 V across its full specified temperature range of –40°C to 85°C. Operation above 16 V risks exceeding safe power dissipation limits and may compromise long-term reliability, even if within absolute ratings.
How does the BIAS SELECT pin function on the TLC271BIP?
The BIAS SELECT pin on the TLC271BIP sets operating mode by voltage level: GND selects low bias (50 µW, 0.03 V/µs), VDD/2 selects medium bias (525 µW, 0.4 V/µs), and VDD selects high bias (3375 µW, 3.6 V/µs). This pin must be driven with a low-impedance source; floating or capacitive coupling causes unstable bias states and erratic performance in the TLC271BIP.
Can the TLC271BIP operate from a single 5-V supply?
Yes, the TLC271BIP is fully specified for single-supply operation at 5 V within its –40°C to 85°C range. Input common-mode range extends to –0.2 V, and output swings to GND and up to 3.8 V into 10 kΩ - enabling full-scale signal handling without level-shifting circuitry in 5-V systems using the TLC271BIP.
What is the purpose of the OFFSET N1 and OFFSET N2 pins on the TLC271BIP?
The OFFSET N1 and OFFSET N2 pins on the TLC271BIP provide access to the internal input stage nulling nodes. Connecting a 10-kΩ potentiometer between them, with wiper to GND, allows manual trimming of input offset voltage to <100 µV - essential for high-accuracy DC amplification stages where the inherent 2 mV max VIO is insufficient in the TLC271BIP design.
Does the TLC271BIP support rail-to-rail input operation?
No, the TLC271BIP does not support rail-to-rail input. Its common-mode input voltage range extends to –0.2 V below GND but only to VDD – 1.5 V at the upper end (e.g., 3.5 V at VDD = 5 V). Input signals exceeding this upper limit cause phase reversal or increased distortion. Rail-to-rail input capability is not provided in the TLC271BIP architecture.
TLC271BIP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- 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:
- 390 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TLC271BIP FAQ
1.How can I place an order for TLC271BIP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC271BIP 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 TLC271BIP reliable?
The price and inventory of TLC271BIP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC271BIP is usually 5 days.
3.What payment methods are accepted for TLC271BIP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC271BIP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC271BIP?
TLC271BIP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC271BIP 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 TLC271BIP?
For technical support, including TLC271BIP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC271BIP requirements.
6.How does Aetrix verify that TLC271BIP is sourced from the original manufacturer or authorized distributors?
All TLC271BIP 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 TLC271BIP meets industry standards.
7.What is the process for return or replacement of TLC271BIP?
All TLC271BIP units undergo pre-shipment inspection (PSI). If there is an issue with TLC271BIP, 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 TLC271BIP part is unused and in its original packaging.
Return procedure for TLC271BIP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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