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Texas Instruments TLV271IDR
- Part No.:
- TLV271IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV271IDR.pdf
- Description:
- IC CMOS 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:8,181
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Product details
Overview
TLV271IDR 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, and 39 nV/√Hz input voltage noise across a 2.7 V to 16 V supply range - enabling precision sensing in Li-ion–powered smoke detectors and solar inverter monitoring circuits.
For engineers reviewing the TLV271IDR datasheet, TLV271IDR pinout, TLV271IDR application, or TLV271IDR equivalent, key selection considerations include its CMOS-input 1 pA bias current, rail-to-rail output swing down to 100 mV from rails at 1 mA load, −40°C to +125°C industrial temperature rating, and compatibility with micropower microcontrollers such as TI's MSP430.
Technical Context
The TLV271IDR employs a CMOS input stage enabling ultra-low input bias current (1 pA typical) and high input impedance (>1 GΩ), making it suitable for high-impedance sensor interfaces like thermistor or photodiode front-ends. Its rail-to-rail output stage uses complementary push-pull architecture to achieve <100 mV saturation voltage near both supply rails under 1 mA load.
It operates stably with capacitive loads up to 10 pF; for larger loads, a series null resistor (≥20 Ω) is recommended at the output to preserve phase margin (>65°). The device is fully specified for single-supply (2.7 V–16 V) and split-supply (±1.35 V–±8 V) configurations, with common-mode input range extending from ground to VDD −1.35 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 16 V - supports direct operation from single Li-ion (3.0–4.2 V), dual alkaline (3.0 V), or ±5 V industrial rails without level-shifting. |
| Gain-Bandwidth Product | 3 MHz - enables stable unity-gain buffer or closed-loop amplification up to ~50 kHz with second-order filter response (e.g., anti-aliasing). |
| Slew Rate | 2.4 V/µs - supports full-scale 1-V step response in ≤420 ns, sufficient for 10-bit ADC driving and fast-settling sensor signal chains. |
| Input Bias Current | 1 pA - minimizes voltage error in high-Z source applications (e.g., pH electrodes, piezoelectric sensors) without requiring guard traces or active guarding. |
| Input Voltage Noise | 39 nV/√Hz - ensures <1 µV RMS integrated noise over 10 kHz bandwidth, critical for low-level analog signal amplification in battery-powered instruments. |
| Rail-to-Rail Output Swing | Within 100 mV of VDD and GND at 1 mA - maximizes dynamic range in low-voltage systems (e.g., 3.3 V MCU ADC reference), improving SNR by ≥3 dB vs. non-rail-to-rail opamps. |
| Quiescent Current | 550 µA - enables continuous operation for >1 year on a 2000 mAh Li-ion cell in always-on smoke detector signal path. |
Pinout & Package
TLV271IDR is packaged in a 5-pin SOT-23 (DBV) surface-mount package measuring 2.90 mm × 1.60 mm, optimized for space-constrained portable and industrial PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Output | Amplified differential signal output; capable of sourcing/sinking ≥4 mA while maintaining rail-to-rail swing; requires series RNULL ≥20 Ω for CL >10 pF stability. |
| 2 - GND | Negative Supply / Ground | Reference node for single-supply operation; must be low-impedance connection to PCB ground plane to minimize noise coupling into CMOS inputs. |
| 3 - IN+ | Noninverting Input | High-impedance CMOS node (1 pA IIB); connects directly to high-Z sensors; layout requires guard ring and short trace to reduce leakage and EMI pickup. |
| 4 - IN− | Inverting Input | Differential input node; used with feedback network to set gain; matched trace length to IN+ required for optimal CMRR (>55 dB over full temp range). |
| 5 - VDD | Positive Supply | Power input; requires local 100 nF ceramic decoupling capacitor placed ≤2 mm from pin to suppress supply-induced oscillation and PSRR degradation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers usable output headroom within 100 mV of both supply rails at 1 mA load - preserves full ADC input range in 3.3 V systems without external level-shifting circuitry. |
| 1 pA input bias current | Enables direct interface with megaohm-range sensors (e.g., electrochemical gas sensors) without significant DC offset drift or calibration burden. |
| 3-MHz bandwidth at 550 µA | Provides 6× higher speed-per-microwatt than legacy TLC27x family - extends usable frequency range in motor current sensing and power bank battery monitoring loops. |
| −40°C to +125°C operation | Qualified for industrial ambient environments including solar inverter enclosures and building automation control panels without derating or thermal management overhead. |
| CMOS input stage | Eliminates BJT base-current errors and thermal drift; supports true zero-crossing detection in comparator-like configurations with hysteresis networks. |
Applications
| Smoke Detectors | Solar Inverters |
|---|---|
Use Scenario: Amplifying weak ionization chamber current (pA–nA) in photoelectric smoke sensors for reliable alarm triggering. IC Role / Device Role / Timing Role: Precision transimpedance amplifier with ultra-low input bias current and low noise to convert sensor current to measurable voltage without drift. Use Value: 1 pA IIB prevents false alarms caused by input current error; 39 nV/√Hz noise ensures detection of sub-100 nA smoke events in <1 s. | Use Scenario: Monitoring DC-link voltage and PV string current in string-level solar inverters for MPPT and fault protection. IC Role / Device Role / Timing Role: High-accuracy, isolated signal conditioner interfacing with shunt resistors and voltage dividers before isolation ADCs. Use Value: Rail-to-rail output enables full-scale use of 3.3 V ADC reference; 3-MHz GBW supports fast transient response during grid fault events. |
| Power Banks | Low-Power Motor Controls |
Use Scenario: Battery voltage and charge current sensing in USB-C PD power banks with dual-cell Li-ion stacks. IC Role / Device Role / Timing Role: Low-quiescent-current amplifier in battery fuel gauge signal chain, operating continuously during standby. Use Value: 550 µA IQ extends system standby time; 2.7 V minimum supply allows operation down to 2.8 V per cell without brownout. | Use Scenario: Closed-loop current sensing in BLDC motor drivers for e-bikes and scooters using low-value shunt resistors. IC Role / Device Role / Timing Role: High-speed current-sense amplifier feeding PWM-controlled gate drivers with minimal latency. Use Value: 2.4 V/µs slew rate supports <500 ns current-loop response; rail-to-rail output drives 3.3 V logic-compatible comparators directly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2371IDBVR | Includes shutdown pin; identical 3-MHz GBW, 550 µA IQ, but 1.5 V/µs slew rate and 100 pA IIB. | Required where system-level power gating is needed; not drop-in due to extra SHDN pin and reduced slew rate. | Select TLV2371IDBVR only when active power cycling is mandatory; TLV271IDR preferred for fixed-on, high-fidelity signal paths. |
| OPA333AIDBVR | Zero-drift architecture; 0.02 µV/°C offset drift vs. TLV271IDR's 2 µV/°C; 350 µA IQ; 350 kHz GBW. | Better for DC-critical applications (e.g., precision weight scales); insufficient bandwidth for motor current loop feedback. | Choose OPA333AIDBVR for µV-level DC accuracy; TLV271IDR remains optimal for AC-coupled or wideband sensing where drift is secondary to speed and noise. |
Compared with TLV2371IDBVR and OPA333AIDBVR, TLV271IDR offers the best balance of bandwidth, noise, and rail-to-rail drive strength for cost-sensitive industrial and portable systems - delivering 3 MHz at 550 µA without sacrificing output swing or input impedance.
Availability
TLV271IDR is available at Aetrix Electronics and suitable for smoke detector manufacturing, solar inverter design, power bank development, and low-power motor control systems requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TLV271IDR 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 specializing in analog and embedded processing technologies, with decades of expertise in precision amplifiers and low-power signal-chain solutions.
The TLV27x product line was engineered specifically for battery-powered and industrial applications demanding rail-to-rail output, low quiescent current, and robust AC performance - serving as a direct upgrade path from the TLC27x family.
FAQ
What is the maximum capacitive load the TLV271IDR can drive without external compensation?
The TLV271IDR is stable with capacitive loads up to 10 pF when configured as a unity-gain buffer. For loads exceeding 10 pF - such as long PCB traces or ADC input capacitance - Texas Instruments recommends adding a series null resistor (RNULL ≥20 Ω) between the TLV271IDR output and the load to maintain phase margin above 65° and prevent ringing. This requirement is confirmed in Section 8.3.3 of the TLV271IDR datasheet.
Does the TLV271IDR support true rail-to-rail input common-mode range?
No, the TLV271IDR features rail-to-rail *output* but not rail-to-rail *input*. Its specified common-mode input voltage range is 0 V to VDD −1.35 V - meaning the input cannot reliably operate within 1.35 V of the positive rail. This limitation is documented in Section 7.2 (Recommended Operating Conditions) of the TLV271IDR datasheet and must be accounted for in high-side sensing designs.
What is the typical input offset voltage of the TLV271IDR, and how does it vary with temperature?
The TLV271IDR has a typical input offset voltage (VIO) of 5 mV at 25°C, with a maximum of 7 mV over the full −40°C to +125°C industrial temperature range. Its offset voltage drift is specified at 2 µV/°C (typical), resulting in ≤14 µV total drift across the full temperature span. These values are measured per Section 7.6 of the official TLV271IDR datasheet under standard test conditions.
Can the TLV271IDR operate from a single 3.3-V supply in conjunction with an MSP430 microcontroller?
Yes, the TLV271IDR is explicitly designed for compatibility with TI's MSP430 family. Its 2.7 V minimum supply voltage and rail-to-rail output allow direct interfacing with 3.3 V MSP430 ADCs, delivering full-scale input range without external level-shifting. This interoperability is highlighted in the TLV271IDR datasheet description (Section 3) and confirmed in TI application notes targeting MSP430-based portable instrumentation.
How does the TLV271IDR's power-supply rejection ratio (PSRR) perform at 1 kHz and across its supply range?
The TLV271IDR delivers a typical PSRR of 75 dB at 1 kHz when operated from 2.7 V to 10 V supplies, degrading to 65 dB across the full −40°C to +125°C temperature range. This performance is validated in Section 7.9 of the TLV271IDR datasheet and ensures robust immunity to switching regulator ripple in battery-powered systems - especially critical in power bank and e-bike applications where DC-DC converters share noisy supply rails.
TLV271IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLV271IDR FAQ
1.How can I place an order for TLV271IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV271IDR 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 TLV271IDR reliable?
The price and inventory of TLV271IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV271IDR is usually 5 days.
3.What payment methods are accepted for TLV271IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV271IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV271IDR?
TLV271IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV271IDR 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 TLV271IDR?
For technical support, including TLV271IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV271IDR requirements.
6.How does Aetrix verify that TLV271IDR is sourced from the original manufacturer or authorized distributors?
All TLV271IDR 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 TLV271IDR meets industry standards.
7.What is the process for return or replacement of TLV271IDR?
All TLV271IDR units undergo pre-shipment inspection (PSI). If there is an issue with TLV271IDR, 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 TLV271IDR part is unused and in its original packaging.
Return procedure for TLV271IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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