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Texas Instruments TLV271CDR
- Part No.:
- TLV271CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV271CDR.pdf
- Description:
- IC CMOS 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,391
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Product details
Overview
TLV271CDR 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 - enabling use in smoke detectors, power banks, and solar inverter sensor interfaces.
For engineers reviewing the TLV271CDR datasheet, TLV271CDR pinout, TLV271CDR application, or TLV271CDR equivalent, key selection criteria include rail-to-rail output swing at low supply voltage, ultra-low 1-pA input bias current for high-impedance sensor interfacing, and guaranteed performance over extended temperature range without thermal derating.
Technical Context
The TLV271CDR uses CMOS input stage architecture to achieve 1-pA typical input bias current and 39 nV/√Hz input voltage noise, supporting precision sensing in high-impedance source applications. Its rail-to-rail output stage enables full dynamic range utilization down to 2.7-V single supply, with output swing within 150 mV of rails at 1-mA load.
It features unity-gain stable operation with ≥65° phase margin into 10-pF capacitive loads, and maintains 3-MHz bandwidth across 2.7–16-V supply range. Input common-mode range extends from GND to VDD −1.35 V, supporting direct interfacing with microcontroller ADC references and Li-ion battery monitoring circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 16 V - supports single-supply Li-ion (3.0–4.2 V), dual-supply ±1.35 V to ±8 V, and industrial 12-V systems without level-shifting. |
| Gain-Bandwidth Product | 3 MHz at VDD = 5 V - enables stable closed-loop gain up to 10× at 300 kHz for anti-aliasing or sensor amplification. |
| Slew Rate | 2.4 V/µs - supports 1-Vpp signals up to ~380 kHz without distortion in unity-gain buffer configurations. |
| Input Bias Current | 1 pA - preserves signal integrity in photodiode, pH electrode, and piezoelectric sensor front-ends with >1-GΩ source impedances. |
| Input Voltage Noise | 39 nV/√Hz at 1 kHz - ensures <1.2 µVrms integrated noise in 10-kHz bandwidth, critical for low-level analog signal chains. |
| Output Swing | Rail-to-rail - delivers >98% of full-scale output swing at 1-mA load, maximizing dynamic range in 3.3-V MCU-based data acquisition. |
| Quiescent Current | 550 µA per channel - enables continuous operation in always-on smoke detectors with multi-year battery life on CR123A cells. |
Pinout & Package
TLV271CDR is packaged in an 8-pin SOIC (D package) with nominal body size 4.98 mm × 3.91 mm, rated for surface-mount reflow and compatible with IPC-7351B footprint standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Amplified differential signal output; rail-to-rail capable, drives 10-kΩ loads with <150-mV headroom to rails. |
| 2 (IN−) | Inverting Input | Differential input node; 1-pA bias current enables high-Z feedback networks and precision integrators. |
| 3 (IN+) | Noninverting Input | Differential input node; common-mode range includes GND, allowing single-supply sensor biasing. |
| 4 (GND) | Negative Supply / Ground | Reference for single-supply operation; must be low-impedance return path for output current and input bias. |
| 5 (NC) | No Internal Connection | Unbonded pad; electrically isolated - may be left floating or tied to GND for mechanical stability. |
| 6 (OUT) | Output (duplicate) | Second output terminal in SOIC-8 package - not functional; internal connection to Pin 1 only. |
| 7 (VDD) | Positive Supply | Primary power input; accepts 2.7–16 V; PSRR of 70 dB minimizes supply ripple coupling into output. |
| 8 (NC) | No Internal Connection | Unbonded pad; electrically isolated - no routing required; avoid solder bridging. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Enables full utilization of 3.3-V or 5-V ADC reference range without external level-shifting circuitry. |
| 1-pA input bias current | Reduces voltage error in high-impedance transducer interfaces (e.g., >100-MΩ thermistors or electrochemical sensors). |
| 3-MHz bandwidth at 550 µA | Delivers 10× higher speed-per-power than legacy TLC27x, enabling faster response in motor current sensing. |
| –40°C to +125°C operation | Qualified for under-hood automotive and outdoor solar inverter environments without derating. |
| CMOS input stage | Eliminates input protection diodes, preventing latch-up when inputs exceed supply rails during power sequencing. |
Applications
| Smoke Detector Signal Conditioning | Power Bank Battery Monitoring |
|---|---|
Use Scenario: Amplifying weak ionization chamber current (pA–nA range) in residential smoke alarms powered by 9-V alkaline batteries. IC Role / Device Role / Timing Role: Transimpedance amplifier front-end with ultra-low input bias current and rail-to-rail output driving comparator input. Use Value: 1-pA input bias prevents signal loss across MΩ feedback resistors; 550-µA quiescent current extends battery life beyond 10 years. | Use Scenario: Measuring cell voltage and charge/discharge current in portable USB-C power banks using 3.7-V Li-ion cells. IC Role / Device Role / Timing Role: Precision voltage buffer and current-sense amplifier feeding 12-bit MCU ADC with 3.3-V reference. Use Value: Rail-to-rail output ensures full 0–3.3-V ADC range utilization; 39 nV/√Hz noise avoids quantization errors in 1-mV resolution measurements. |
| Solar Inverter DC Link Sensing | Low-Power Motor Control Feedback |
Use Scenario: Isolated DC-link voltage monitoring in microinverters operating at 40–60 V with wide temperature swings. IC Role / Device Role / Timing Role: High-side differential amplifier input stage scaling 60-V bus to 0–3.3-V MCU input range via resistive divider. Use Value: 16-V max supply allows direct use with auxiliary 12-V rail; 70-dB PSRR suppresses switching noise from gate drivers. | Use Scenario: Closed-loop current sensing in BLDC fan controllers powered by 12-V lead-acid or 24-V industrial supplies. IC Role / Device Role / Timing Role: Shunt-based current amplifier feeding PWM controller with fast transient response. Use Value: 2.4 V/µs slew rate supports accurate reconstruction of 20-kHz PWM current waveforms; 3-MHz GBW enables stable 10× gain at 300 kHz. |
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 1.2-V/µs slew rate and 50-nV/√Hz noise. | Required where system-level power gating is needed; unsuitable for always-on smoke detector front-ends due to added control complexity. | Select TLV2371IDBVR only if active power management is mandatory and 2.4-V/µs slew rate is not required. |
| OPA316IDBVR | Higher 10-MHz GBW, 1.5-mA IQ, 6-nV/√Hz noise, and 6-V max supply - not 16-V rated. | Better for high-speed, low-noise audio or medical sensing; incompatible with 12-V industrial or solar DC-link monitoring. | Choose OPA316IDBVR only for precision, low-noise, <6-V applications where bandwidth >3 MHz is essential. |
Compared with TLV2371IDBVR and OPA316IDBVR, TLV271CDR uniquely balances 16-V operation, rail-to-rail output, ultra-low bias current, and sub-1-mA quiescent power - making it the only option qualified for long-life, wide-supply, high-impedance industrial sensing without trade-offs in voltage range or power.
Availability
TLV271CDR is available at Aetrix Electronics and suitable for smoke detector manufacturing, power bank production, and solar inverter design requiring stable component supply with guaranteed long-term availability and traceable lot history.
Supply support for TLV271CDR 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, embedded processing, and connectivity technologies, with over 90 years of innovation in high-reliability analog ICs.
The TLV27x family was designed specifically for battery-powered and industrial signal conditioning applications demanding rail-to-rail output, low quiescent current, and extended temperature operation - directly addressing limitations of legacy TLC27x opamps.
FAQ
What is the maximum supply voltage rating for TLV271CDR?
The absolute maximum supply voltage for TLV271CDR is 16.5 V, with recommended operation up to 16 V. Exceeding this risks permanent damage. The device is fully specified from 2.7 V to 16 V, enabling direct use with 12-V industrial rails and ±8-V split supplies - a key differentiator from lower-voltage alternatives like OPA316.
Does TLV271CDR support rail-to-rail input common-mode range?
No, TLV271CDR does not support rail-to-rail input. Its input common-mode voltage range is specified from GND to VDD −1.35 V. This allows full-range operation with ground-referenced sensors but requires biasing above GND for signals near the positive rail - unlike true R-R input opamps such as TLV2461.
Can TLV271CDR drive capacitive loads without instability?
TLV271CDR remains stable into ≤10 pF capacitive loads. For larger loads (e.g., ADC input capacitance or long PCB traces), TI recommends adding a 20-Ω series resistor (RNULL) between the output and load to maintain ≥65° phase margin and prevent ringing - a design requirement confirmed in Section 8.3.3 of the official datasheet.
Is TLV271CDR qualified for automotive applications?
TLV271CDR is not AEC-Q100 qualified. However, its I-suffix variant (TLV271IDR) is rated for –40°C to +125°C and used in non-safety-critical automotive subsystems like body control modules. For ASIL-B/C systems, TI recommends automotive-qualified alternatives such as LMV321Q1.
What is the typical input offset voltage of TLV271CDR at room temperature?
The typical input offset voltage of TLV271CDR is 5 mV at 25°C, with a maximum of 7 mV across the full industrial temperature range (–40°C to +125°C). This value is measured under standard conditions (VDD = 2.7 V, RL = 10 kΩ, VO = VDD/2, RS = 50 Ω) and impacts DC accuracy in precision gain stages and sensor bridges.
TLV271CDR 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLV271CDR FAQ
1.How can I place an order for TLV271CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV271CDR 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 TLV271CDR reliable?
The price and inventory of TLV271CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV271CDR is usually 5 days.
3.What payment methods are accepted for TLV271CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV271CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV271CDR?
TLV271CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV271CDR 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 TLV271CDR?
For technical support, including TLV271CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV271CDR requirements.
6.How does Aetrix verify that TLV271CDR is sourced from the original manufacturer or authorized distributors?
All TLV271CDR 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 TLV271CDR meets industry standards.
7.What is the process for return or replacement of TLV271CDR?
All TLV271CDR units undergo pre-shipment inspection (PSI). If there is an issue with TLV271CDR, 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 TLV271CDR part is unused and in its original packaging.
Return procedure for TLV271CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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