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Texas Instruments TLV2731IDBVT
- Part No.:
- TLV2731IDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV2731IDBVT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,162
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Product details
Overview
TLV2731IDBVT from Texas Instruments is a single, rail-to-rail output, low-power LinCMOS™ operational amplifier in a 5-pin SOT-23 package. It delivers 2 MHz gain-bandwidth, 1.6 V/μs slew rate at 5 V, 15 nV/√Hz input voltage noise, 1 pA typical input bias current, and operates from 2.7 V to 10 V - optimized for precision signal conditioning in battery-powered sensor interfaces.
For engineers reviewing the TLV2731IDBVT datasheet, TLV2731IDBVT pinout, TLV2731IDBVT application, or TLV2731IDBVT equivalent, key selection considerations include its rail-to-rail output swing, ultra-low input bias current for high-impedance sources, 3V/5V full characterization, −40°C to +85°C industrial temperature range, and SOT-23 footprint suitability for space-constrained analog front-ends.
Technical Context
The TLV2731IDBVT employs LinCMOS™ process technology to achieve high input impedance (>1 TΩ common-mode resistance) and low input bias current (1 pA typ), enabling accurate amplification of signals from piezoelectric transducers and other high-Z sources. Its rail-to-rail output stage supports full dynamic range across 2.7–10 V supplies without external level-shifting.
It features internal compensation for unity-gain stability with 600 Ω loads and includes design provisions for capacitive load drive via external isolation resistors. Phase margin remains ≥48° at 5 V with 100 pF load and 600 Ω parallel resistance, supporting robust operation in reference buffers and ADC driver configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 10 V - enables direct use with 3 V and 5 V systems, including Li-ion single-cell and USB-powered designs. |
| Gain-Bandwidth Product | 2 MHz at VDD = 5 V - supports stable closed-loop operation up to ~100 kHz in unity-gain buffer configurations driving 600 Ω loads. |
| Slew Rate | 1.6 V/μs at VDD = 5 V - ensures <1 μs settling for 1 V step inputs, suitable for multiplexed data acquisition sampling rates up to 100 kSPS. |
| Input Bias Current | 1 pA typical - minimizes voltage error across high-impedance source impedances >100 MΩ, critical for pH sensors and photodiode preamps. |
| Input Voltage Noise | 15 nV/√Hz at 1 kHz - preserves SNR in low-level audio and instrumentation signal chains where thermal noise dominates. |
| Input Offset Voltage | 3 mV max over −40°C to +85°C - provides predictable DC accuracy in uncalibrated industrial monitoring circuits. |
| Common-Mode Input Range | Includes negative rail (VDD−) - allows sensing below ground in single-supply systems using level-shifted references or current-sense shunts. |
Pinout & Package
TLV2731IDBVT is housed in a 5-pin SOT-23 (DBV) package measuring 2.9 mm × 2.8 mm, requiring only 5.6 mm² PCB area - one-third the footprint of standard SOIC-8. The package is tape-and-reel only and rated for −40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Output | Amplified differential signal output; rail-to-rail swing supports full utilization of ADC input ranges. |
| VDD+ (Pin 2) | Power | Positive supply terminal; accepts 2.7–10 V; decoupling capacitor placement near this pin is critical for noise immunity. |
| IN+ (Pin 3) | Input | Noninverting input; high-impedance node (1 TΩ) suited for direct connection to passive sensors or filtered references. |
| IN− (Pin 4) | Input | Inverting input; matched to IN+ for low offset drift; used in transimpedance or difference amplifier topologies. |
| VDD−/GND (Pin 5) | Power | Negative supply or ground reference; serves as return path for input bias current and output load current. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full supply-range output (e.g., 0–5 V at 5 V supply), eliminating need for dual supplies when interfacing with SAR or delta-sigma ADCs. |
| 1 pA typical input bias current | Enables stable DC-coupled amplification of signals from megohm-range sources like thermistors, RTDs, and electrochemical cells without significant offset error. |
| 15 nV/√Hz input voltage noise | Supports high-fidelity signal integrity in low-amplitude applications such as microphone preamplifiers and optical receiver front-ends. |
| 2 MHz GBW with 600 Ω load drive | Provides sufficient bandwidth for anti-aliasing filtering and fast-settling buffering in 12–16-bit data acquisition systems. |
| Specified at 3 V and 5 V | Guarantees performance compliance across common low-voltage rails, reducing validation effort in portable and industrial power architectures. |
Applications
| Low-Power Audio Preamp | Multiplexed Data Acquisition |
|---|---|
Use Scenario: Battery-powered wearable audio recorder conditioning electret microphone output before ADC sampling. IC Role / Device Role / Timing Role: Single-supply noninverting amplifier with gain = 100, providing rail-to-rail output swing and low-noise amplification. Use Value: 15 nV/√Hz noise floor preserves voice SNR; 750–1200 μA supply current extends runtime; SOT-23 size fits tight PCB layouts. | Use Scenario: Channel-selectable sensor interface in PLC I/O module scanning 16 thermocouple inputs via analog multiplexer. IC Role / Device Role / Timing Role: Precision unity-gain buffer isolating multiplexer output from ADC input, minimizing charge injection errors. Use Value: 1 pA input bias current prevents voltage error across 100 kΩ multiplexer on-resistance; 2 MHz GBW ensures <1 μs settling between channels. |
| Optical Module Monitoring | Server PSU Feedback Loop |
Use Scenario: Monitoring photodiode current in fiber-optic transceiver diagnostics, converting to voltage for microcontroller ADC. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1 MΩ feedback resistor, operating from 3.3 V rail. Use Value: Ultra-low input bias current avoids signal loss; rail-to-rail output maximizes dynamic range into 12-bit ADC; 15 nV/√Hz noise maintains resolution at low light levels. | Use Scenario: Isolating and scaling isolated voltage sense signal from secondary-side controller in 48 V server power supply. IC Role / Device Role / Timing Role: High-impedance differential amplifier measuring output voltage divider, rejecting common-mode ripple. Use Value: 70 dB CMRR suppresses switching noise; 3 mV max VIO ensures ±0.5% output regulation accuracy; −40°C to +85°C rating matches PSU thermal profile. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVR | Zero-drift architecture; 0.1 μV/°C VIO drift vs TLV2731IDBVT's 0.5 μV/°C; higher 350 kHz GBW but lower 160 μA supply current. | Better for DC-critical applications (e.g., weigh scales); less suitable for AC-coupled audio due to chopper artifacts. | Select OPA333AIDBVR when long-term DC stability outweighs noise and speed requirements. |
| MCP6001T-E/OT | Higher 100 nV/√Hz noise; 1 μA IB; 1 MHz GBW; same SOT-23-5 package and 1.8–6 V supply range. | Cost-optimized for general-purpose buffering where precision is secondary to BOM cost. | Choose MCP6001T-E/OT for non-critical sensor interfaces where 15 nV/√Hz noise and 1 pA IB are not required. |
Compared with OPA333AIDBVR and MCP6001T-E/OT, TLV2731IDBVT offers the optimal balance of low noise, ultra-low input bias current, and moderate bandwidth in an industrial-temperature SOT-23 package - making it preferred for high-Z sensor conditioning and multiplexed data acquisition where both AC fidelity and DC accuracy matter.
Availability
TLV2731IDBVT is available at Aetrix Electronics and suitable for low-power audio preamplifiers, multiplexed data-acquisition systems, and optical module monitoring requiring stable component supply across industrial temperature grades and long production lifecycles.
Supply support for TLV2731IDBVT 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 company headquartered in Dallas, Texas, designing and manufacturing analog ICs, embedded processors, and system-on-chip solutions for industrial, automotive, and communications markets.
The TLV2731IDBVT belongs to TI's LinCMOS™ precision op amp family, engineered specifically for low-voltage, low-power, high-input-impedance signal conditioning in space- and energy-constrained applications.
FAQ
What is the operating temperature range of the TLV2731IDBVT?
The TLV2731IDBVT is specified for industrial operation from −40°C to +85°C. This range is confirmed in the device information table and electrical characteristics sections for the 'I' grade, ensuring reliable performance in harsh environments such as factory automation controllers and outdoor telecom equipment. The TLV2731IDBVT maintains its 3 mV max input offset voltage and 1 pA input bias current across this full range.
Does the TLV2731IDBVT support rail-to-rail input operation?
No, the TLV2731IDBVT supports rail-to-rail *output* swing but not rail-to-rail *input*. Its common-mode input voltage range extends to the negative rail (VDD−) but stops 1.3 V below the positive rail (VDD+). For example, at 5 V supply, the valid input range is 0 V to 3.7 V. This is explicitly stated in Section 5.3 Recommended Operating Conditions and verified in Figures 5-3 and 5-4 of the datasheet.
Can the TLV2731IDBVT drive a 600 Ω load effectively?
Yes, the TLV2731IDBVT is fully characterized driving a 600 Ω load at both 3 V and 5 V supplies. At 5 V, it delivers 2.74 V high-level output at –4 mA and 0.16 V low-level output at 1 mA, confirming robust linearity and current capability. The gain-bandwidth product (2 MHz) and phase margin (≥48°) are also tested under these conditions, ensuring stability in telecom line-driver and ADC buffer roles.
What is the typical supply current of the TLV2731IDBVT at 5 V?
The typical supply current of the TLV2731IDBVT is 1.2 mA at 5 V and 25°C, with a maximum of 1.6 mA over the full −40°C to +85°C temperature range. This value is documented in Section 5.6 Electrical Characteristics, VDD = 5 V, under the IDD parameter. The low quiescent current supports extended battery life in portable instrumentation and remote sensing nodes.
Is the TLV2731IDBVT pin-compatible with other SOT-23 op amps?
The TLV2731IDBVT uses the standard 5-pin SOT-23 (DBV) pinout: OUT (1), VDD+ (2), IN+ (3), IN− (4), VDD−/GND (5). While physically compatible with other DBV-packaged single op amps (e.g., OPA333, MCP6001), functional compatibility depends on specifications - notably input bias current, noise, and bandwidth. No datasheet states pin-to-pin equivalence with any alternate part; users must verify circuit-level behavior.
TLV2731IDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.6V/µs
- Gain Bandwidth Product:
- 2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 850µA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TLV2731IDBVT FAQ
1.How can I place an order for TLV2731IDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2731IDBVT 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 TLV2731IDBVT reliable?
The price and inventory of TLV2731IDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2731IDBVT is usually 5 days.
3.What payment methods are accepted for TLV2731IDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2731IDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2731IDBVT?
TLV2731IDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2731IDBVT 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 TLV2731IDBVT?
For technical support, including TLV2731IDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2731IDBVT requirements.
6.How does Aetrix verify that TLV2731IDBVT is sourced from the original manufacturer or authorized distributors?
All TLV2731IDBVT 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 TLV2731IDBVT meets industry standards.
7.What is the process for return or replacement of TLV2731IDBVT?
All TLV2731IDBVT units undergo pre-shipment inspection (PSI). If there is an issue with TLV2731IDBVT, 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 TLV2731IDBVT part is unused and in its original packaging.
Return procedure for TLV2731IDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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