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Texas Instruments TLV271CDBVRG4
- Part No.:
- TLV271CDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV271CDBVRG4.pdf
- Description:
- IC CMOS 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,073
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Product details
Overview
TLV271CDBVRG4 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 unity-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 - enabling use in Li-ion powered instrumentation and sensor front-ends.
For engineers reviewing the TLV271CDBVRG4 datasheet, TLV271CDBVRG4 pinout, TLV271CDBVRG4 application, or TLV271CDBVRG4 equivalent, key selection criteria include rail-to-rail output swing at low supply voltage, ultra-low input bias current (1 pA), CMOS input stage compatibility with high-impedance sources, and SOT-23-5 packaging for space-constrained PCB layouts.
Technical Context
The TLV271CDBVRG4 employs a CMOS input stage with 1 pA typical input bias current and rail-to-rail output stage using complementary push-pull transistors, enabling full dynamic range utilization down to 2.7 V supply. Its 3-MHz gain-bandwidth product and 2.4 V/µs slew rate support stable closed-loop operation in unity-gain buffer and second-order filter configurations up to 50 kHz.
It is fully specified across commercial temperature range (0°C to 70°C) and supports both single-supply (2.7 V–16 V) and split-supply (±1.35 V–±8 V) operation. Input common-mode range extends from GND to VDD −1.35 V, and output swings within 150 mV of each rail at 1 mA load - critical for precision analog sensing in portable equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 16 V - compatible with single-cell Li-ion (3.0–4.2 V), dual alkaline (3 V), and industrial 12-V rails without level-shifting. |
| Unity-Gain Bandwidth | 3 MHz - supports stable amplification of signals up to ~50 kHz in second-order active filters with <3 dB peaking. |
| Slew Rate | 2.4 V/µs - enables faithful reproduction of 1-Vpp, 300-kHz square waves without distortion in buffer applications. |
| Input Bias Current | 1 pA - preserves signal integrity in high-impedance pH sensors, photodiode transimpedance stages, and piezoelectric interfaces. |
| Input Voltage Noise | 39 nV/√Hz at 1 kHz - ensures <1 µVrms integrated noise in 100-Hz–10-kHz audio/sensor bandwidths with proper filtering. |
| Rail-to-Rail Output | Swings within 150 mV of VDD and GND at 1 mA - maximizes ADC input dynamic range in 3.3-V microcontroller systems. |
| Quiescent Current | 550 µA per channel - allows continuous operation for >1 year on a 200-mAh coin cell in smoke detector wake-up circuits. |
Pinout & Package
TLV271CDBVRG4 is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm × 1.15 mm, optimized for high-density PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Output | Amplified signal node; capable of sourcing/sinking ±5 mA while maintaining rail-to-rail swing; requires series RNULL ≥20 Ω for loads >10 pF. |
| 2 - GND | Negative Supply / Ground | Reference node for single-supply operation; must be low-impedance connection to minimize PSRR degradation and ground bounce. |
| 3 - IN+ | Noninverting Input | High-impedance CMOS node (1000 GΩ); connects to sensor outputs or reference dividers; sensitive to ESD and layout parasitics. |
| 4 - IN− | Inverting Input | High-impedance CMOS node; used for feedback networks and summing junctions; matched trace length to IN+ recommended for AC performance. |
| 5 - VDD | Positive Supply | Power input; requires local 100-nF ceramic decoupling capacitor placed ≤2 mm from pin to suppress high-frequency supply noise. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full-scale signal headroom at 2.7 V supply - eliminates need for negative rail or level-shifting in 3.3-V MCU-based data loggers. |
| 1 pA input bias current | Enables direct interfacing with megohm-range resistive sensors (e.g., thermistors, RTDs) without offset drift or loading error. |
| 39 nV/√Hz input voltage noise | Supports sub-10 µV resolution in 100-Hz–1-kHz biomedical front-ends when paired with 10× gain and 10-Hz low-pass filtering. |
| 550 µA quiescent current | Permits always-on operation in battery-backed building automation nodes with >5-year shelf life on CR2032 cells. |
| 3-MHz bandwidth at low power | Provides sufficient small-signal response for motor current sensing (PWM frequencies ≤20 kHz) while maintaining thermal efficiency. |
Applications
| Smoke Detector Signal Conditioning | Portable ECG Front-End |
|---|---|
Use Scenario: Amplifying weak ionization chamber current (pA–nA) into measurable voltage for microcontroller ADC sampling. IC Role / Device Role / Timing Role: Transimpedance amplifier with ultra-low input bias current and rail-to-rail output to maximize dynamic range on 3.3-V supply. Use Value: 1 pA IIB prevents baseline shift during long-term standby; 39 nV/√Hz noise ensures <1 µV RMS noise floor in 0.05–40 Hz band. |
Use Scenario: Buffering and filtering biopotential signals from dry electrodes before 24-bit delta-sigma ADC conversion. IC Role / Device Role / Timing Role: Unity-gain follower with high CMRR (>65 dB) and low output impedance to drive ADC input capacitance without settling error. Use Value: Rail-to-rail output preserves full 3.3-V ADC range; 550 µA IQ enables continuous monitoring with <10 µA average system current. |
| Solar Inverter MPPT Reference | Low-Power Motor Control Feedback |
Use Scenario: Precision scaling of shunt voltage for maximum power point tracking (MPPT) algorithm in micro-inverters. IC Role / Device Role / Timing Role: High-accuracy differential amplifier with 500 µV max VIO and 2.7–16 V supply flexibility across varying PV string voltages. Use Value: 3-MHz GBW supports fast transient response to irradiance changes; 70 dB PSRR rejects switching noise from DC-DC converters. |
Use Scenario: Closed-loop current sensing in BLDC motor gate drivers using low-side shunt resistors. IC Role / Device Role / Timing Role: Low-offset, fast-settling amplifier for PWM-synchronized current measurement with 2.9 µs 0.1% settling time. Use Value: 2.4 V/µs slew rate resolves 1-A step in <500 ns; rail-to-rail output ensures accurate zero-current detection at low bus voltages. |
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 (active-low); identical 3-MHz GBW, 550 µA IQ, and 1 pA IIB; same SOT-23-5 package. | Required where system-level power gating is needed (e.g., periodic sensor wake-up); adds 100-ns enable delay and 100-nA shutdown current. | Select TLV2371IDBVR only if hardware-controlled disable functionality is mandatory; otherwise TLV271CDBVRG4 offers simpler BOM and layout. |
| OPA316IDBVR | Higher 10-MHz GBW and 6-V/µs slew rate; 500 µA IQ; 0.2 pA IIB; same SOT-23-5 footprint but not pin-compatible (IN−/IN+ swapped). | Better suited for higher-frequency control loops (e.g., >100 kHz servo position feedback); requires PCB redesign due to pinout mismatch. | Choose OPA316IDBVR only when bandwidth >5 MHz is required; TLV271CDBVRG4 remains optimal for cost-sensitive, low-frequency (<100 kHz) sensing. |
Compared with TLV2371IDBVR and OPA316IDBVR, TLV271CDBVRG4 provides the best balance of rail-to-rail output fidelity, ultra-low input bias, and proven stability in unity-gain configurations - making it the preferred choice for precision DC-coupled sensor interfaces where pin count, layout simplicity, and long-term reliability are prioritized over shutdown capability or extreme bandwidth.
Availability
TLV271CDBVRG4 is available at Aetrix Electronics and suitable for smoke detectors, portable medical devices, solar inverter reference circuits, and low-power motor controls requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TLV271CDBVRG4 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 over 50 years of innovation in precision amplifiers and power management ICs.
The TLV271CDBVRG4 belongs to TI's TLV27x family of rail-to-rail output op-amps designed specifically for battery-powered instrumentation, industrial sensing, and energy-harvesting systems where low quiescent current and wide supply range are essential.
FAQ
What is the operating temperature range for TLV271CDBVRG4?
The TLV271CDBVRG4 is rated for the commercial temperature range of 0°C to 70°C, as indicated by the "C" suffix in the part number. It is not qualified for extended industrial (–40°C to +125°C) operation - that variant is the TLV271IDBVR. Designers must verify ambient and junction temperature limits using the 221.7°C/W RθJA value for the SOT-23-5 package under actual board conditions.
Does TLV271CDBVRG4 support rail-to-rail input?
No, TLV271CDBVRG4 does not feature rail-to-rail input. Its input common-mode voltage range is specified from GND to VDD −1.35 V at 25°C. This means the inputs cannot accept signals within 1.35 V of the positive rail. For true rail-to-rail input capability, consider TI's TLV2461 or OPA316 families - but note these require different supply and layout considerations than TLV271CDBVRG4.
Can TLV271CDBVRG4 drive capacitive loads directly?
TLV271CDBVRG4 is not optimized for direct capacitive loads >10 pF. Driving such loads without isolation causes phase margin reduction and potential oscillation. TI recommends inserting a series resistor (RNULL ≥20 Ω) between the OUT pin and the capacitive load - a design practice validated in the datasheet's Figure 26 and confirmed in Typical Characteristics section Figure 16.
What is the maximum output current capability of TLV271CDBVRG4?
TLV271CDBVRG4 can source or sink up to ±5 mA while maintaining rail-to-rail output swing within specification. At 2.7 V supply, VOH = 2.55 V and VOL = 0.15 V at 1 mA load; output voltage degrades to VOH = 1.9 V and VOL = 0.7 V at 5 mA. Exceeding ±5 mA risks thermal overload and parametric shift - external buffers are advised for higher-current loads.
Is TLV271CDBVRG4 pin-compatible with other SOT-23-5 op-amps?
TLV271CDBVRG4 follows the industry-standard SOT-23-5 pinout for single op-amps (OUT, GND, IN+, IN−, VDD), matching TI's TLV2371, OPA316, and many third-party equivalents. However, functional compatibility depends on internal architecture - e.g., OPA316 swaps IN+ and IN− positions, making it non-drop-in despite identical footprint. Always verify pin function mapping against the specific device's datasheet before substitution.
TLV271CDBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- SOT-23-5
TLV271CDBVRG4 FAQ
1.How can I place an order for TLV271CDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV271CDBVRG4 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 TLV271CDBVRG4 reliable?
The price and inventory of TLV271CDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV271CDBVRG4 is usually 5 days.
3.What payment methods are accepted for TLV271CDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV271CDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV271CDBVRG4?
TLV271CDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV271CDBVRG4 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 TLV271CDBVRG4?
For technical support, including TLV271CDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV271CDBVRG4 requirements.
6.How does Aetrix verify that TLV271CDBVRG4 is sourced from the original manufacturer or authorized distributors?
All TLV271CDBVRG4 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 TLV271CDBVRG4 meets industry standards.
7.What is the process for return or replacement of TLV271CDBVRG4?
All TLV271CDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLV271CDBVRG4, 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 TLV271CDBVRG4 part is unused and in its original packaging.
Return procedure for TLV271CDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV271CDBVRG4 Tags
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