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Texas Instruments TLC271ACDR
- Part No.:
- TLC271ACDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC271ACDR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,316
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Product details
Overview
TLC271ACDR from Texas Instruments is a programmable low-power LinCMOS™ operational amplifier with bias-select capability, 2 mV max input offset voltage at 25°C, 3.6 V/µs slew rate (high-bias mode), and rail-to-rail output swing down to the negative rail. It operates from 4 V to 16 V over –40°C to 85°C and supports single-supply sensor signal conditioning in battery-powered industrial monitoring systems.
For engineers reviewing the TLC271ACDR datasheet, TLC271ACDR pinout, TLC271ACDR application, or TLC271ACDR equivalent, this device's programmable bias modes (high/medium/low), ultra-low input bias current (≤60 pA), and wide supply range make it critical for precision analog front-ends where power-performance tradeoffs must be dynamically optimized.
Technical Context
The TLC271ACDR implements a silicon-gate LinCMOS™ process enabling 10¹² Ω input impedance, latch-up immunity, and ESD protection rated to 2000 V per MIL-STD-883C. Its bias-select pin allows real-time configuration of three distinct operating modes-each with defined power dissipation (0.05–3.4 mW), slew rate (0.03–3.6 V/µs), and unity-gain bandwidth (0.09–1.7 MHz) at VDD = 5 V.
It features a common-mode input voltage range extending below the negative rail (down to –0.2 V at VDD = 5 V), rail-swing output (VOL ≤ 50 mV, VOH ≥ 3.2 V at RL = 10 kΩ), and stable operation with capacitive loads up to 20 pF. The device is characterized for –40°C to 85°C (I-suffix) and packaged in an 8-pin SOIC (D) with tape-and-reel delivery (R suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (max) | 2 mV at 25°C - enables DC-coupled transducer interfaces without external nulling circuitry |
| Slew Rate (high-bias) | 3.6 V/µs - supports >100 kHz small-signal amplification in active filter stages |
| Supply Current (high-bias) | 1.6 mA typical at VDD = 5 V - balances speed and sub-2-mW power budget in portable instrumentation |
| Input Bias Current | ≤60 pA typical - preserves high-impedance sensor node integrity (e.g., pH electrodes, piezoresistive bridges) |
| Common-Mode Input Range | Extends to –0.2 V below GND at VDD = 5 V - allows direct interfacing with ground-referenced sensors |
| Output Voltage Swing | VOL ≤ 50 mV, VOH ≥ 3.2 V (RL = 10 kΩ) - delivers full dynamic range into ADC drivers or comparator inputs |
| Unity-Gain Bandwidth | 1.7 MHz (high-bias) - ensures stable closed-loop gain ≥10 up to ~150 kHz |
Pinout & Package
Package: 8-pin SOIC (D), surface-mount, tape-and-reel (R suffix). Pin 1 marked by beveled corner or dot; standard D-package footprint (5.0 mm × 4.0 mm, 1.27 mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OFFSET N1) | Offset null adjustment terminal | Connects to external potentiometer for manual input offset trimming; unused in most applications |
| 2 (IN–) | Inverting input | Differential input node; high-impedance (10¹² Ω), accepts signals down to –0.2 V below GND |
| 3 (IN+) | Non-inverting input | Differential input node; identical impedance and common-mode range as IN– |
| 4 (GND) | Negative supply / reference | Ground return for supply and signal; common-mode range extends below this pin |
| 5 (BIAS SELECT) | Bias mode control input | Voltage level (GND = low, VDD/2 = medium, VDD = high) selects power/performance operating point |
| 6 (VDD) | Positive supply | 4 V to 16 V operation; decoupling capacitor required near pin for stability |
| 7 (OUT) | Amplifier output | Rail-to-rail capable (to GND); drives 10 kΩ load with <50 mV saturation at low end |
| 8 (OFFSET N2) | Offset null adjustment terminal | Second terminal for external nulling network; paired with Pin 1 for symmetric trim |
Key Features
| Feature | Design Value |
|---|---|
| Bias-select programming | Three user-configurable modes (high/medium/low) enable on-the-fly optimization of slew rate (0.03–3.6 V/µs) vs. supply current (50–3375 µW) |
| LinCMOS™ process | 10¹² Ω input impedance and ≤60 pA input bias current preserve signal integrity in high-Z sensor circuits |
| Rail-to-rail output | Output swings within 50 mV of GND and within 1.2 V of VDD (at RL = 10 kΩ), maximizing ADC utilization |
| ESD protection | 2000 V HBM rating per MIL-STD-883C Method 3015.2 - reduces handling sensitivity in production environments |
| Latch-up immunity | Designed-in immunity prevents destructive latch-up under transient overcurrent or ESD stress |
Applications
| Industrial Sensor Signal Conditioning | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Amplifying low-level mV outputs from strain gauges or thermopiles in factory-floor environmental monitors. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier stage with programmable gain and offset correction. Use Value: 2 mV max VIO and 0.1 µV/month drift ensure stable calibration over 12-month deployment intervals without field recalibration. |
Use Scenario: Signal buffering and anti-alias filtering for 12-bit SAR ADCs in remote soil moisture sensors powered by coin cells. IC Role / Device Role / Timing Role: Low-power analog front-end amplifier with selectable bias mode to extend battery life during idle periods. Use Value: Low-bias mode draws only 50 µW, enabling >5-year operation on CR2032 while retaining 0.09 MHz bandwidth for wake-up sampling. |
| Medical Patient Monitoring | Automotive Cabin Air Quality Sensors |
|
Use Scenario: Biopotential signal acquisition (ECG lead-off detection) in portable vital signs recorders. IC Role / Device Role / Timing Role: High-input-impedance buffer isolating electrode interface from downstream filtering and digitization. Use Value: 10¹² Ω input impedance minimizes loading error on dry-electrode skin contact impedances (>1 MΩ), preserving signal fidelity. |
Use Scenario: CO₂ and VOC sensor signal amplification in HVAC control modules exposed to automotive temperature cycling. IC Role / Device Role / Timing Role: Temperature-stable transducer interface amplifier qualified for –40°C to 85°C operation. Use Value: 2 µV/°C max αVIO and guaranteed performance across full I-suffix range eliminate thermal drift compensation firmware overhead. |
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 |
|---|---|---|---|
| TLC271BCDR | 10× lower max input offset voltage (2 mV → 0.34 mV at 25°C); otherwise identical pinout, bias modes, and specs | Required for sub-mV DC accuracy applications (e.g., precision weigh scales, medical diagnostics) | Select TLC271BCDR when VIO budget is ≤0.5 mV; no PCB change needed |
| TLV2462CDR | Fixed low-power design (600 µA IQ), no bias-select; rail-to-rail I/O; 2.5 V to 6 V supply only | Not suitable for 12 V sensor supplies or programmable performance tuning; better noise (11 nV/√Hz) but higher VIO (2.5 mV) | Choose TLV2462CDR only for 3.3 V/5 V systems prioritizing noise over flexibility and supply range |
Compared with TLC271BCDR, the TLC271ACDR trades 0.34 mV offset for lower cost and sufficient accuracy for industrial sensor front-ends; versus TLV2462CDR, it offers wider supply range (4–16 V), programmable bias, and superior input impedance-critical for high-Z sources.
Availability
TLC271ACDR is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, battery-powered data loggers, medical patient monitoring, and automotive cabin air quality sensors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC271ACDR 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 delivering analog and embedded processing solutions, with over 90 years of innovation in precision analog ICs and broad industrial portfolio coverage.
The TLC271 family belongs to TI's LinCMOS™ precision op-amp product line, designed specifically for applications demanding ultra-low input bias current, programmable power-performance tradeoffs, and robust operation in harsh industrial and automotive environments.
FAQ
What is the maximum supply voltage for the TLC271ACDR?
The TLC271ACDR supports a maximum supply voltage of 16 V across its rated operating temperature range of –40°C to 85°C. Absolute maximum rating is 18 V, but continuous operation above 16 V is not specified and may compromise reliability or parametric performance. Always observe recommended operating conditions in Section 5 of the SLOS090D datasheet.
How does the BIAS SELECT pin configure operating modes on the TLC271ACDR?
The BIAS SELECT pin on the TLC271ACDR sets operating mode via 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 medium-bias in single-supply configurations to generate the midpoint voltage accurately.
Does the TLC271ACDR support rail-to-rail input operation?
No-the TLC271ACDR supports rail-to-rail *output* swing (within 50 mV of GND and 1.2 V of VDD), but its common-mode input voltage range extends only to –0.2 V below GND and up to VDD – 1.5 V (e.g., 3.5 V at VDD = 5 V). It does not accept inputs at the positive rail, distinguishing it from true rail-to-rail input op-amps.
What is the input offset voltage drift specification for the TLC271ACDR?
The TLC271ACDR exhibits typical input offset voltage drift of 0.1 µV/month, including the first 30 days of operation. Its average temperature coefficient (αVIO) is 1.8–2.0 µV/°C over the full –40°C to 85°C range, ensuring predictable drift behavior in thermally varying environments without active compensation.
Can the TLC271ACDR drive capacitive loads directly?
The TLC271ACDR is characterized for stable operation with capacitive loads up to 20 pF when driving a 10 kΩ load, as verified in Figures 98–100 of the SLOS090D datasheet. For larger capacitive loads (e.g., >50 pF), external isolation resistance (≥100 Ω) or feedback compensation is required to maintain phase margin >34° and prevent oscillation.
TLC271ACDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC271ACDR FAQ
1.How can I place an order for TLC271ACDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC271ACDR 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 TLC271ACDR reliable?
The price and inventory of TLC271ACDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC271ACDR is usually 5 days.
3.What payment methods are accepted for TLC271ACDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC271ACDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC271ACDR?
TLC271ACDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC271ACDR 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 TLC271ACDR?
For technical support, including TLC271ACDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC271ACDR requirements.
6.How does Aetrix verify that TLC271ACDR is sourced from the original manufacturer or authorized distributors?
All TLC271ACDR 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 TLC271ACDR meets industry standards.
7.What is the process for return or replacement of TLC271ACDR?
All TLC271ACDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC271ACDR, 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 TLC271ACDR part is unused and in its original packaging.
Return procedure for TLC271ACDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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