My Inquiry
My Account
Texas Instruments TLC271BCP
- Part No.:
- TLC271BCP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC271BCP.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,299
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLC271BCP from Texas Instruments is a programmable low-power LinCMOS™ operational amplifier in an 8-pin plastic DIP package, featuring 2 mV max input offset voltage at 25°C, bias-select mode (high/medium/low), and operation from 3 V to 16 V over 0°C to 70°C. It delivers 3.6 V/µs slew rate and 25 nV/√Hz input noise in high-bias mode, enabling precision transducer interfacing and battery-powered signal conditioning.
For engineers reviewing the TLC271BCP datasheet, TLC271BCP pinout, TLC271BCP application, or TLC271BCP equivalent, key selection criteria include its programmable bias architecture, rail-to-rail output swing capability, input common-mode range extending below the negative rail, and verified performance across single-supply configurations with VDD as low as 3 V.
Technical Context
The TLC271BCP implements a silicon-gate LinCMOS™ process that achieves 10¹² Ω typical input impedance and sub-picoampere input bias current, enabling high-impedance sensor front-ends without external guarding. Its three-level bias-select circuitry allows dynamic tradeoffs between power (50–3375 µW), speed (0.03–3.6 V/µs), and noise (68–25 nV/√Hz) without changing external components.
It supports true single-supply operation with common-mode input voltage range extending to –0.2 V (at VDD = 5 V) and output swing to the negative rail. Internal ESD protection withstands 2000 V per MIL-STD-883C Method 3015.2, and latch-up immunity is designed-in per JEDEC JESD78.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (max) | 2 mV at 25°C - enables DC-coupled amplification of mV-level sensor signals without nulling circuitry |
| Supply Voltage Range | 3 V to 16 V - supports direct connection to single Li-ion cells (3.0–4.2 V) or industrial 12 V rails |
| Slew Rate (high-bias) | 3.6 V/µs - sufficient for 100 kHz full-power bandwidth with 1 Vpp output into 10 kΩ load |
| Input Noise Density | 25 nV/√Hz at 1 kHz - suitable for low-frequency precision instrumentation with <1 µV RMS noise in 10 Hz–10 kHz band |
| Input Impedance | 10¹² Ω typical - prevents loading of high-Z sources like piezoelectric sensors or pH electrodes |
| Common-Mode Input Range | Extends to –0.2 V below GND at VDD = 5 V - allows accurate amplification of signals referenced below ground in single-supply systems |
| Output Swing | Includes negative rail - eliminates need for dual supplies when interfacing with ADCs or logic with ground-referenced inputs |
Pinout & Package
Package: PDIP-8 (Plastic Dual In-line Package), 0.3-inch body width, through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OFFSET N1) | Offset Null Terminal 1 | Connects to potentiometer wiper for manual input offset trimming; required only in ultra-precision applications |
| 2 (IN–) | Inverting Input | Differential input node; high-impedance CMOS gate input with 0.6 pA typical bias current at 25°C |
| 3 (IN+) | Non-Inverting Input | Differential input node; identical electrical characteristics to IN–, supports rail-to-rail common-mode range |
| 4 (GND) | Negative Supply / Ground Reference | Return path for supply current and signal reference; common-mode range extends below this pin |
| 5 (BIAS SELECT) | Bias Mode Control Input | Voltage level (GND = low bias, VDD/2 = medium, VDD = high) selects power/performance operating point |
| 6 (VDD) | Positive Supply | Accepts 3–16 V DC; internal regulation ensures stable bias currents across supply range |
| 7 (OUT) | Amplifier Output | Class AB output stage capable of ±30 mA short-circuit current; swings to within 50 mV of GND and 3.8 V below VDD (at VDD = 5 V) |
| 8 (OFFSET N2) | Offset Null Terminal 2 | Second terminal of offset null network; used with Pin 1 and external 10 kΩ potentiometer |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Bias Architecture | Selects among three discrete bias levels via single analog voltage on BIAS SELECT pin-enables one hardware design to serve low-power sensing and higher-speed signal processing roles |
| Rail-to-Rail Output Swing | Drives to GND and within 3.8 V of VDD (at VDD = 5 V)-eliminates level-shifting circuits when driving SAR ADCs or microcontroller GPIOs |
| Sub-Picoampere Input Bias Current | 0.6 pA typical at 25°C-preserves signal integrity in photodiode transimpedance amplifiers and high-value RC filter networks |
| Integrated ESD Protection | Withstands 2000 V HBM per MIL-STD-883C Method 3015.2-reduces need for external TVS diodes in field-deployed industrial sensors |
| Designed-In Latch-Up Immunity | Complies with JEDEC JESD78 Class II requirements-ensures robustness against transient overvoltage events on input or supply pins |
Applications
| Transducer Signal Conditioning | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Amplifying low-level mV outputs from strain gauges, thermocouples, or pressure sensors in industrial monitoring nodes. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with offset trimming capability and low drift (0.1 µV/month). Use Value: 2 mV max VIO and 1.8 µV/°C tempco enable direct digitization of 10-bit sensor outputs without calibration firmware. | Use Scenario: Front-end amplification in portable multimeters, gas detectors, or handheld medical devices powered by single-cell alkaline or Li-ion batteries. IC Role / Device Role / Timing Role: Low-quiescent-current op-amp supporting 3 V operation and rail-to-rail output for maximum dynamic range. Use Value: 50 µW low-bias mode extends battery life beyond 1 year in always-on sensor wake-up circuits. |
| Active Filter Blocks | Analog Computing Circuits |
Use Scenario: Implementing 2nd-order Sallen-Key low-pass filters for anti-aliasing prior to 100 kSPS ADC sampling. IC Role / Device Role / Timing Role: Unity-gain stable amplifier with 1.7 MHz GBW and 46° phase margin in high-bias mode. Use Value: Enables filter cutoff frequencies up to 100 kHz with <0.1 dB passband ripple using standard 1% resistors and NP0 capacitors. | Use Scenario: Performing real-time analog arithmetic (summing, differencing, integration) in control loop feedback paths. IC Role / Device Role / Timing Role: High-input-impedance differential amplifier with 480 V/mV large-signal gain in low-bias mode. Use Value: Supports stable closed-loop gain >1000 with minimal power draw, reducing thermal drift in embedded PID controllers. |
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 at 25°C; otherwise identical pinout, bias-select functionality, and temperature range (0°C to 70°C) | Lower precision requirement; acceptable where sensor output spans >10 mV full scale | Select when cost sensitivity outweighs need for sub-2 mV offset; same PCB layout and bill-of-materials |
| TLV2462CP | Rail-to-rail input/output; 0.6 mV max VIO; 0.55 mA quiescent current; no bias-select feature; SOIC-8 package | Higher precision and lower noise (19 nV/√Hz), but fixed power/performance and surface-mount only | Choose for new designs requiring better DC accuracy and AC performance, accepting SMT assembly and loss of programmability |
Compared with TLC271ACP and TLV2462CP, the TLC271BCP provides the lowest input offset voltage in the TLC271 family while retaining full bias-select flexibility-making it optimal for upgrade paths from legacy bipolar op-amps where both precision and power adaptability are required.
Availability
TLC271BCP is available at Aetrix Electronics and suitable for transducer interfacing, battery-powered instrumentation, active filter blocks, and analog computing circuits requiring stable component supply across extended production lifecycles.
Supply support for TLC271BCP 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 product line was engineered to replace bipolar and BiFET op-amps in cost-sensitive, low-power precision applications-leveraging LinCMOS™ technology to deliver high input impedance and low drift without high supply current penalties.
FAQ
What is the maximum supply voltage rating for the TLC271BCP?
The absolute maximum supply voltage for the TLC271BCP is 18 V, but the recommended operating range is 3 V to 16 V across the 0°C to 70°C temperature range. Operation above 16 V risks exceeding internal dissipation limits and may degrade long-term reliability. The TLC271BCP datasheet specifies 16 V as the upper limit for guaranteed parametric performance under all conditions.
How does the BIAS SELECT pin function in the TLC271BCP?
The BIAS SELECT pin on the TLC271BCP sets the amplifier's operating point: grounding the pin enables low-bias mode (50 µW, 0.03 V/µs), connecting it to VDD/2 enables medium-bias mode (525 µW, 0.4 V/µs), and tying it to VDD enables high-bias mode (3375 µW, 3.6 V/µs). This analog-controlled selection allows dynamic optimization of power versus speed without changing external components or firmware.
Can the TLC271BCP operate from a single 3.3 V supply?
Yes, the TLC271BCP is fully specified for 3 V operation at 0°C to 70°C, including key parameters such as input offset voltage (2 mV max), common-mode input range (–0.2 V to 2.3 V), and output swing (to GND and up to 2.8 V). At 3.3 V, high-bias mode delivers 2.8 V/µs slew rate and 1.2 MHz unity-gain bandwidth, making it suitable for low-voltage IoT sensor nodes.
Does the TLC271BCP require external compensation for stability?
No, the TLC271BCP is unity-gain stable with ≥43° phase margin across all bias modes and supply voltages (3–16 V). It drives capacitive loads up to 100 pF without oscillation when configured as a voltage follower, and maintains stability with 20 pF load at unity gain per Figure 100 in the datasheet. No external compensation components are needed for standard gain configurations.
What is the purpose of the OFFSET N1 and OFFSET N2 pins on the TLC271BCP?
The OFFSET N1 and OFFSET N2 pins on the TLC271BCP provide access to the internal input stage nulling network. Connecting a 10 kΩ potentiometer between these pins-with the wiper grounded-allows manual adjustment of input offset voltage to <100 µV. This trimming is optional and typically used only in high-accuracy DC measurement applications where factory VIO spec (2 mV max) is insufficient.
TLC271BCP 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):
- 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
TLC271BCP FAQ
1.How can I place an order for TLC271BCP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC271BCP 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 TLC271BCP reliable?
The price and inventory of TLC271BCP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC271BCP is usually 5 days.
3.What payment methods are accepted for TLC271BCP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC271BCP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC271BCP?
TLC271BCP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC271BCP 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 TLC271BCP?
For technical support, including TLC271BCP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC271BCP requirements.
6.How does Aetrix verify that TLC271BCP is sourced from the original manufacturer or authorized distributors?
All TLC271BCP 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 TLC271BCP meets industry standards.
7.What is the process for return or replacement of TLC271BCP?
All TLC271BCP units undergo pre-shipment inspection (PSI). If there is an issue with TLC271BCP, 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 TLC271BCP part is unused and in its original packaging.
Return procedure for TLC271BCP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC271BCP Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
