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Texas Instruments TLC271ACP
- Part No.:
- TLC271ACP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC271ACP.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,636
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Product details
Overview
TLC271ACP from Texas Instruments is a programmable low-power LinCMOS™ operational amplifier in an 8-pin plastic DIP package, featuring bias-select mode (high/medium/low), 10 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 the negative rail - used in precision sensor signal conditioning for industrial temperature monitoring systems.
For engineers reviewing the TLC271ACP datasheet, TLC271ACP pinout, TLC271ACP application, or TLC271ACP equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in single-supply transducer interfacing, and confirmed alternative parts with documented performance tradeoffs across bias modes and temperature ranges.
Technical Context
The TLC271ACP implements a silicon-gate LinCMOS™ process enabling 10¹² Ω typical input impedance and sub-picoampere input bias current while maintaining latch-up immunity and ESD protection up to 2000 V. Its three-programmable bias modes directly configure internal current sources to trade off power dissipation (50–3375 µW) against ac performance (0.03–3.6 V/µs slew rate, 0.09–1.7 MHz unity-gain bandwidth).
It supports single-supply operation from 3 V to 16 V over 0°C to 70°C, with common-mode input range extending 0.2 V below the negative rail and output swing reaching within 50 mV of both rails. The BIAS SELECT pin accepts externally set voltage levels (GND, midpoint, or VDD) to lock the operating mode without external components beyond a simple resistor divider in single-supply configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (max) | 10 mV at 25°C - sets worst-case dc error floor in precision gain stages |
| Slew Rate (high-bias) | 3.6 V/µs at VDD = 5 V - enables stable amplification of signals up to ~320 kHz full-power bandwidth |
| Supply Voltage Range | 3 V to 16 V - supports battery-powered (3 V) and industrial (12–15 V) single-rail systems |
| Input Impedance | 10¹² Ω typical - minimizes loading on high-impedance sources like pH electrodes or piezoelectric sensors |
| Output Swing | Within 50 mV of negative rail and 0.2 V of positive rail - preserves dynamic range in low-voltage signal chains |
| ESD Protection | 2000 V per MIL-STD-883C Method 3015.2 - ensures robustness during board handling and system integration |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded control and instrumentation applications |
Pinout & Package
Package: 8-pin plastic DIP (P package), through-hole mounting, JEDEC MS-001 compatible.
| 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 common-mode voltage down to –0.2 V with VDD = 5 V |
| 3 (IN+) | Non-inverting input | Differential input node; matched impedance and noise performance to IN– |
| 4 (GND) | Negative supply / reference | Return path for bias currents and output stage; common-mode range extends below this pin |
| 5 (BIAS SELECT) | Bias mode control | Voltage level (GND = low, VDD/2 = medium, VDD = high) selects internal quiescent current and ac performance |
| 6 (VDD) | Positive supply | Single or dual supply connection; supports 3–16 V operation with no reverse polarity protection |
| 7 (OUT) | Amplifier output | Capable of sourcing/sinking ±30 mA; rail-to-rail swing with load ≥10 kΩ |
| 8 (OFFSET N2) | Offset null input | Completes offset null network with OFFSET N1 and external potentiometer |
Key Features
| Feature | Design Value |
|---|---|
| Bias-select programming | Three discrete operating points (low/medium/high) set via single analog voltage - eliminates need for multiple op-amp SKUs in one design |
| Rail-to-rail output | Swings within 50 mV of GND and ≤0.2 V below VDD - maximizes usable signal headroom in 3–5 V systems |
| Ultra-high input impedance | 10¹² Ω typical - prevents signal attenuation in high-Z sensor interfaces (e.g., thermistors, photodiodes) |
| Low input offset drift | 0.1 µV/month including first 30 days - ensures long-term calibration stability in unattended monitoring equipment |
| LinCMOS™ process | Combines CMOS input stage benefits (low Ib, high Zin) with bipolar-like speed and noise - no metal-gate instability |
Applications
| Temperature Sensor Signal Conditioning | Portable Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Amplifying low-level output from 10 kΩ NTC thermistors in HVAC control panels with 5 V single supply. IC Role / Device Role / Timing Role: Precision non-inverting amplifier with offset trim capability and rail-to-rail output driving ADC reference buffer. Use Value: 10 mV max VIO and 0.1 µV/month drift maintain ±0.5°C accuracy over 12-month field deployment without recalibration. |
Use Scenario: Front-end signal conditioning for piezoelectric vibration sensors in handheld predictive maintenance tools. IC Role / Device Role / Timing Role: Low-power transimpedance amplifier with selectable bias mode to extend battery life during standby (low-bias) and enable burst-mode acquisition (high-bias). Use Value: 50 µW low-bias mode reduces quiescent current by >98% vs high-bias, enabling >6-month operation on two AA cells. |
| Industrial Analog Input Modules | Medical Patient Monitor Front Ends |
|
Use Scenario: Buffering and level-shifting 4–20 mA loop signals into isolated ADC inputs in PLC analog I/O cards. IC Role / Device Role / Timing Role: Unity-gain buffer with wide common-mode range (–0.2 V to 3.5 V @ VDD = 5 V) and high CMRR (≥80 dB). Use Value: Common-mode input range extending below GND rejects ground-loop noise in multi-channel industrial backplanes. |
Use Scenario: Amplifying ECG electrode signals in Class II portable monitors powered from rechargeable Li-ion batteries. IC Role / Device Role / Timing Role: Instrumentation-grade amplifier with ESD-hardened inputs (2000 V HBM) and low 1/f noise critical for sub-100 nV bio-signal integrity. Use Value: 25 nV/√Hz input noise at 1 kHz and <60 pA input bias current prevent electrode polarization and baseline wander. |
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 same P package; identical bias-select architecture and 10 mV VIO grade but shares BIAS SELECT pin across both amplifiers | Requires shared bias configuration for both channels - unsuitable when independent ac performance tuning is needed | Select when space-constrained designs require two matched programmable amps with synchronized bias control |
| TLV2462CP | Rail-to-rail input/output, 600 µA supply current (fixed), no bias-select; 2.5 mV VIO max, 0.65 V/µs slew rate | Lacks programmability and ultra-low-power modes - cannot achieve <100 µW operation or 3.6 V/µs slew in same package | Select when guaranteed rail-to-rail input and lower VIO are prioritized over bias flexibility and micro-power operation |
Compared with TLC272CP and TLV2462CP, the TLC271ACP uniquely delivers per-amplifier bias configurability in a single-channel DIP footprint, enabling optimized tradeoffs between speed, noise, and power in legacy through-hole systems where layout changes are constrained.
Availability
TLC271ACP is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical devices, and legacy control system upgrades requiring stable component supply with long-lifecycle support.
Supply support for TLC271ACP 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 founded in 1930, specializing in analog ICs, embedded processors, and educational technology with manufacturing and R&D operations across 30+ countries.
The TLC271ACP belongs to TI's LinCMOS™ precision op-amp family, designed specifically for cost-sensitive industrial and instrumentation applications requiring programmable performance, single-supply operation, and long-term dc stability without bipolar power penalties.
FAQ
What is the maximum supply voltage rating for the TLC271ACP?
The absolute maximum supply voltage for the TLC271ACP is 18 V, but the recommended operating range is 3 V to 16 V across its 0°C to 70°C temperature specification. Operation above 16 V risks exceeding internal junction limits and is not characterized for parametric performance or reliability. The TLC271ACP must never be operated with reverse polarity on VDD or GND pins.
How does the BIAS SELECT pin function in the TLC271ACP?
The BIAS SELECT pin on the TLC271ACP determines 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). A resistive divider is required for midpoint bias in single-supply systems. The TLC271ACP draws only –1.4 µA at the pin, minimizing divider current burden.
Can the TLC271ACP drive capacitive loads without instability?
The TLC271ACP exhibits 46° phase margin at unity gain with 20 pF capacitive load and 10 kΩ load resistance at 25°C. It remains stable up to 100 pF with appropriate series output resistance (≥200 Ω), as confirmed in Figure 32 of the SLOS090D datasheet. For loads >100 pF, external compensation or isolation is required to maintain stability in the TLC271ACP.
What is the purpose of the OFFSET N1 and OFFSET N2 pins on the TLC271ACP?
The OFFSET N1 and OFFSET N2 pins on the TLC271ACP provide access to the internal input stage nulling nodes, allowing external 10-kΩ potentiometer connection to reduce input offset voltage to near-zero. This adjustment is effective across all bias modes and temperature ranges, and is commonly used in precision weighing scales and calibrated sensor front ends where initial VIO tolerance must be tightened beyond the 10 mV spec.
Does the TLC271ACP support true rail-to-rail input operation?
No, the TLC271ACP does not support rail-to-rail input - its common-mode input voltage range extends to –0.2 V below GND (negative rail) but only to VDD – 1.5 V on the high side at 25°C. However, it does deliver rail-to-rail output swing (within 50 mV of GND and ≤0.2 V below VDD), making it ideal for single-supply applications where output headroom is critical but input common-mode constraints permit slight headroom.
TLC271ACP 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:
- 900 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TLC271ACP FAQ
1.How can I place an order for TLC271ACP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC271ACP 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 TLC271ACP reliable?
The price and inventory of TLC271ACP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC271ACP is usually 5 days.
3.What payment methods are accepted for TLC271ACP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC271ACP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC271ACP?
TLC271ACP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC271ACP 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 TLC271ACP?
For technical support, including TLC271ACP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC271ACP requirements.
6.How does Aetrix verify that TLC271ACP is sourced from the original manufacturer or authorized distributors?
All TLC271ACP 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 TLC271ACP meets industry standards.
7.What is the process for return or replacement of TLC271ACP?
All TLC271ACP units undergo pre-shipment inspection (PSI). If there is an issue with TLC271ACP, 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 TLC271ACP part is unused and in its original packaging.
Return procedure for TLC271ACP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC271ACP Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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