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Texas Instruments TLV271CDG4
- Part No.:
- TLV271CDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV271CDG4.pdf
- Description:
- IC OPAMP GP 3MHZ RRO 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:975
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Product details
Overview
TLV271CDG4 from Texas Instruments is a single-channel, rail-to-rail output operational amplifier optimized for low-power, wide-bandwidth signal conditioning in battery-powered and industrial systems. It delivers 3-MHz gain-bandwidth, 2.4 V/µs slew rate, 550 µA supply current per channel, 39 nV/√Hz input voltage noise, and operates from 2.7 V to 16 V across –40°C to 125°C. It serves as a direct upgrade to TLC27x in sensor front-ends and Li-ion–powered instrumentation.
For engineers reviewing the TLV271CDG4 datasheet, TLV271CDG4 pinout, TLV271CDG4 application, or TLV271CDG4 equivalent, key selection criteria include rail-to-rail output swing at low supply (2.7 V), ultra-low input bias current (1 pA), CMOS input stage compatibility with high-impedance sources, and thermal performance in SOT-23 packaging for space-constrained designs.
Technical Context
The TLV271CDG4 implements a CMOS-input, rail-to-rail output architecture enabling full dynamic range utilization near supply rails-critical for single-supply 3.3-V or 5-V microcontroller interfaces. Its 3-MHz unity-gain bandwidth and 2.4 V/µs slew rate support stable closed-loop operation up to 50 kHz in filter and buffer configurations without phase margin degradation.
Designed for extended industrial temperature operation (–40°C to 125°C), it maintains 550 µA typical quiescent current across 2.7–16 V supply range and achieves 70 dB minimum PSRR and 55 dB minimum CMRR over its full operating range-enabling robust performance in noisy power environments such as motor control feedback paths and building automation sensors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 16 V - supports single-cell Li-ion (3.0–4.2 V), dual alkaline (3.0 V), and ±5 V split supplies without external regulation. |
| Gain-Bandwidth Product | 3 MHz - enables stable unity-gain buffers and second-order filters up to 50 kHz with <3 dB peaking. |
| Slew Rate | 2.4 V/µs - ensures ≤2 µs settling to 0.1% for 1-V step inputs, suitable for fast-sampling analog front-ends. |
| Input Bias Current | 1 pA - preserves signal integrity in high-impedance pH, photodiode, and thermocouple sensor interfaces. |
| Input Voltage Noise | 39 nV/√Hz at 1 kHz - limits added noise in precision DC-coupled amplification stages below 100 kHz. |
| Rail-to-Rail Output | Swings within 150 mV of VDD and GND at 1 mA load - maximizes ADC input range in 3.3-V data acquisition systems. |
| Quiescent Current | 550 µA per channel - enables multi-day operation in smoke detectors and wireless sensor nodes powered by coin cells. |
Pinout & Package
TLV271CDG4 is packaged in an industry-standard 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Amplified signal output; capable of sourcing/sinking ≥4 mA while maintaining rail-to-rail swing under 2.7–16 V supply. |
| 2 (GND) | Negative Supply / Ground | Reference node for single-supply operation; must be low-impedance connection to minimize noise coupling. |
| 3 (IN+) | Noninverting Input | High-impedance CMOS input (≥1 TΩ); accepts signals from passive sensors without loading error. |
| 4 (IN−) | Inverting Input | Differential input node; matched to IN+ for offset minimization in precision inverting configurations. |
| 5 (VDD) | Positive Supply | Primary power terminal; requires local 0.1-µF ceramic decoupling placed ≤2 mm from pin for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers usable output headroom down to 150 mV from each rail at 1 mA, extending dynamic range in 3.3-V ADC interfacing. |
| Ultra-low input bias current | 1 pA maximum at 25°C enables accurate amplification of nanoamp-level currents from photodiodes and ion-selective electrodes. |
| Wide supply voltage range | Operates from 2.7 V (Li-ion cutoff) to 16 V (industrial 12-V bus), eliminating need for separate LDOs in mixed-voltage systems. |
| Low-noise CMOS input stage | 39 nV/√Hz input voltage noise and 0.6 fA/√Hz current noise preserve SNR in high-gain sensor signal chains. |
| Industrial temperature rating | Specified from –40°C to +125°C, supporting deployment in solar inverters, e-bike controllers, and HVAC actuators. |
Applications
| Smoke Detector Signal Conditioning | Li-ion Battery Voltage Monitoring |
|---|---|
Use Scenario: Amplifying weak current pulses from ionization chamber in residential/commercial smoke alarms. IC Role / Device Role / Timing Role: Low-noise transimpedance amplifier converting picoamp-level chamber current into measurable voltage. Use Value: 1 pA input bias current prevents signal loss; rail-to-rail output ensures full-scale use of 8-bit MCU ADC even at 3.0-V battery voltage. | Use Scenario: Precision resistive-divider interface between 4.2-V Li-ion cell and 3.3-V microcontroller ADC input. IC Role / Device Role / Timing Role: Unity-gain buffer isolating high-impedance divider from ADC sampling capacitance. Use Value: 550 µA quiescent current extends standby life; 39 nV/√Hz noise avoids quantization-limited resolution loss in 12-bit monitoring. |
| Solar Inverter DC Link Sensing | Building Automation Temperature Interface |
Use Scenario: Isolating and scaling high-side DC bus voltage (up to 600 V) via resistive divider in string inverters. IC Role / Device Role / Timing Role: High-common-mode rejection buffer feeding isolated sigma-delta ADC. Use Value: 70 dB PSRR rejects switching noise from IGBT gate drivers; 125°C rating survives proximity to power modules. | Use Scenario: Amplifying millivolt-level outputs from RTD or thermistor networks in smart thermostats and HVAC controllers. IC Role / Device Role / Timing Role: Precision noninverting amplifier with programmable gain for linearized temperature response. Use Value: 500 µV max input offset ensures <0.5°C absolute error; CMOS inputs prevent self-heating drift in 10-kΩ+ sensor elements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV271IDBVR | Same electrical specs; rated for –40°C to +125°C (I-suffix) vs. TLV271CDG4's 0°C to 70°C (C-suffix). | Required for automotive under-hood or outdoor industrial deployments exceeding 70°C ambient. | Select TLV271IDBVR when extended temperature operation is mandatory; otherwise TLV271CDG4 suffices for commercial indoor equipment. |
| TLV2371IDBVR | Includes shutdown pin (active-low), 550 µA quiescent current, same 3-MHz GBW but lower 1.4 V/µs slew rate. | Preferred where periodic power cycling is used to extend battery life beyond 550 µA baseline draw. | Choose TLV2371IDBVR only if system-level power sequencing requires enable/disable control; TLV271CDG4 offers superior transient response. |
Compared with TLV271IDBVR and TLV2371IDBVR, TLV271CDG4 provides optimal balance of speed (2.4 V/µs), noise (39 nV/√Hz), and cost for commercial-grade instrumentation-without shutdown complexity or temperature over-specification.
Availability
TLV271CDG4 is available at Aetrix Electronics and suitable for smoke detectors, battery-powered instruments, and building automation systems requiring stable component supply, long-term manufacturability, and TI-qualified production lots.
Supply support for TLV271CDG4 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, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
The TLV271CDG4 belongs to TI's precision low-power op amp product line, engineered specifically for battery-operated and energy-conscious industrial sensing applications where rail-to-rail output, low IQ, and CMOS input integrity are critical.
FAQ
What is the maximum recommended supply voltage for TLV271CDG4?
The maximum recommended supply voltage for TLV271CDG4 is 16 V. Absolute maximum rating is 16.5 V, but sustained operation above 16 V risks reliability degradation. This allows direct use with 12-V industrial rails and ±8-V split supplies while maintaining safe margins per TI's production data sheet SLOS351E.
Does TLV271CDG4 support rail-to-rail input common-mode range?
No, TLV271CDG4 does not support rail-to-rail input. Its common-mode input voltage range is specified as 0 V to VDD − 1.35 V. At 5 V supply, this means input signals must stay within 0 V to 3.65 V. The rail-to-rail capability applies only to the output stage-not the input stage-as confirmed in Section 7.2 of the TLV271CDG4 datasheet.
What is the thermal resistance (RθJA) of TLV271CDG4 in its SOT-23 package?
The junction-to-ambient thermal resistance (RθJA) for TLV271CDG4 in the 5-pin SOT-23 (DBV) package is 221.7°C/W, as published in Section 7.3 of the official datasheet. This value assumes standard JEDEC 2-layer board conditions; actual board layout and copper area will affect real-world thermal performance.
Can TLV271CDG4 drive capacitive loads directly?
TLV271CDG4 can drive ≤10 pF capacitive loads stably. For larger loads (e.g., ADC input capacitance or long traces), TI recommends adding a series resistor (RNULL ≥20 Ω) between the output and load to maintain ≥65° phase margin and prevent oscillation-per Figure 26 and Section 8.3.3 of the datasheet.
Is TLV271CDG4 pin-compatible with TLC271CP?
Yes, TLV271CDG4 is pin-compatible with TLC271CP in the 8-pin SOIC (D) package, but not in SOT-23. TLV271CDG4 uses the 5-pin SOT-23 (DBV) footprint, whereas TLC271CP uses 8-pin SOIC. Both share identical pin functions (OUT, GND, IN+, IN−, VDD) on matching pins-but physical package and pin count differ, requiring PCB redesign for substitution.
TLV271CDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2.6V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 625µA
- Current - Output / Channel:
- 8 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLV271CDG4 FAQ
1.How can I place an order for TLV271CDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV271CDG4 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 TLV271CDG4 reliable?
The price and inventory of TLV271CDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV271CDG4 is usually 5 days.
3.What payment methods are accepted for TLV271CDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV271CDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV271CDG4?
TLV271CDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV271CDG4 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 TLV271CDG4?
For technical support, including TLV271CDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV271CDG4 requirements.
6.How does Aetrix verify that TLV271CDG4 is sourced from the original manufacturer or authorized distributors?
All TLV271CDG4 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 TLV271CDG4 meets industry standards.
7.What is the process for return or replacement of TLV271CDG4?
All TLV271CDG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLV271CDG4, 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 TLV271CDG4 part is unused and in its original packaging.
Return procedure for TLV271CDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV271CDG4 Tags
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