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Texas Instruments TLV2731IDBVR
- Part No.:
- TLV2731IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV2731IDBVR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,047
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Product details
Overview
TLV2731IDBVR from Texas Instruments is a single, rail-to-rail output, low-power LinCMOS™ operational amplifier in SOT-23-5 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 - ideal for precision signal conditioning in space-constrained, battery-powered sensor interfaces.
For engineers reviewing the TLV2731IDBVR datasheet, TLV2731IDBVR pinout, TLV2731IDBVR application, or TLV2731IDBVR equivalent, key selection considerations include its rail-to-rail output swing, ultra-low input bias current for high-impedance sources, 3 mV max input offset voltage over –40°C to +85°C, and verified capacitive load drive capability up to 5 nF with RISO compensation.
Technical Context
The TLV2731IDBVR 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 pH electrodes. Its rail-to-rail output stage supports full dynamic range utilization with single-supply 3 V or 5 V operation.
It features internal compensation for unity-gain stability into 600 Ω loads and exhibits phase margin ≥48° with 100 pF capacitive load. The device is fully characterized across –40°C to +85°C and specified for low-noise small-signal conditioning where input-referred noise (15 nV/√Hz at 1 kHz) and low THD+N are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 10 V - enables direct interface with Li-ion, 3.3 V, and 5 V systems without level-shifting. |
| Gain-Bandwidth Product | 2 MHz at VDD = 5 V - supports stable closed-loop operation up to ~100 kHz with moderate gain (e.g., G = 20). |
| Slew Rate | 1.6 V/μs at VDD = 5 V - ensures <1 μs settling for 1 V step with minimal distortion in audio and data-acquisition front-ends. |
| Input Offset Voltage | 3 mV max over –40°C to +85°C - maintains accuracy in DC-coupled sensor amplifiers without frequent calibration. |
| Input Bias Current | 1 pA typical - minimizes voltage error across high-impedance sources (>100 MΩ), e.g., photodiode or electrochemical sensors. |
| Input Voltage Noise | 15 nV/√Hz at 1 kHz - preserves SNR in low-level analog signal chains such as medical ECG preamps or precision thermopile interfaces. |
| Common-Mode Input Range | Includes negative rail (GND) - allows direct sensing of ground-referenced signals without input biasing networks. |
| Output Swing | Rail-to-rail - delivers full 0–5 V output span with 3 V supply, maximizing ADC utilization and dynamic range. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 2.8 mm footprint, 5-pin surface-mount, tape-and-reel only. Ultra-compact size reduces PCB area by >66% vs SOIC-8 and enables placement adjacent to high-impedance sensors to minimize noise pickup.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Amplifier output | Delivers rail-to-rail voltage swing; requires RISO ≥50 Ω for stable driving of >1 nF capacitive loads. |
| VDD+ (Pin 2) | Positive power supply | Accepts 2.7–10 V; decoupling capacitor (0.1 μF) must be placed within 2 mm for noise immunity. |
| IN+ (Pin 3) | Noninverting input | High-impedance node (>1 TΩ); sensitive to layout-induced leakage - guard ring recommended for <1 pA bias integrity. |
| IN– (Pin 4) | Inverting input | Differential input node; matched trace routing required when used in precision difference amplifiers. |
| VDD–/GND (Pin 5) | Negative supply / ground reference | Return path for all currents; must connect to low-impedance ground plane to maintain CMRR >55 dB. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Enables full-scale ADC interfacing with 3 V supplies, eliminating need for level-shifting or dual supplies in portable instrumentation. |
| 1 pA typical input bias current | Supports direct connection to >100 MΩ source impedances (e.g., glass pH electrodes) without significant offset drift or signal attenuation. |
| 15 nV/√Hz input voltage noise | Preserves signal integrity in low-amplitude sensor paths (e.g., thermocouples, strain gauges) where noise dominates resolution limits. |
| Stable into 600 Ω loads | Permits direct driving of telecom line drivers, analog multiplexer outputs, and legacy 600 Ω test equipment without external buffers. |
| –40°C to +85°C operating range | Qualified for industrial automation, PLC I/O modules, and server PSU monitoring where ambient temperature exceeds commercial grade. |
| 5.6 mm² total board area | Reduces layout parasitics and enables distributed amplifier placement - critical for multi-channel sensor arrays and high-density PCBs. |
Applications
| Low-Power Audio Preamp | Multiplexed Data-Acquisition System |
|---|---|
Use Scenario: Battery-powered wearable audio recorder conditioning microphone signals before ADC sampling. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op amp providing 20× gain with <15 nV/√Hz noise floor and <1 μs settling. Use Value: Extends runtime via 850 μA max supply current at 3 V while preserving SNR >95 dB across 20 Hz–20 kHz bandwidth. | Use Scenario: 16-channel industrial DAQ module switching between RTD, thermocouple, and voltage inputs using analog multiplexers. IC Role / Device Role / Timing Role: Buffer amplifier isolating multiplexer output from ADC input, rejecting crosstalk and maintaining gain accuracy. Use Value: 1 pA input bias current prevents voltage error buildup on multiplexer capacitance; rail-to-rail output ensures full ADC code utilization. |
| Optical Transceiver Module | Programmable Logic Controller (PLC) Analog Input |
Use Scenario: Post-amplifier for PIN photodiode current in GPON ONU receiver, converting to voltage before limiting amplifier. IC Role / Device Role / Timing Role: Transimpedance amplifier stage with low input bias current and low noise to maximize sensitivity at –30 dBm optical input. Use Value: 1 pA bias current avoids dark-current-induced offset; 2 MHz GBW supports 100 Mbps data rates with <0.5% pulse distortion. | Use Scenario: Isolated 4–20 mA loop receiver in DIN-rail mounted PLC, converting current to precision 0–5 V for microcontroller ADC. IC Role / Device Role / Timing Role: Low-drift, rail-to-rail output amplifier referenced to system ground, driving ADC input with minimal loading. Use Value: 3 mV max VIO over –40°C to +85°C ensures <0.06% full-scale error in 5 V span; 2.7 V min supply supports brownout operation during line dips. |
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; 2 μV max VIO, 0.1 μV/°C drift; higher 350 μA supply current; same SOT-23-5 package. | Better DC precision for <1 Hz sensor signals (e.g., load cells), but higher power limits battery life. | Choose OPA333AIDBVR when sub-μV offset and near-zero drift outweigh power budget constraints. |
| MCP6001T-E/OT | Higher 100 nV/√Hz noise; 100 pA input bias; 1 MHz GBW; rated for –40°C to +125°C; same SOT-23-5 footprint. | Lower cost for non-critical industrial controls; insufficient noise performance for audio or precision measurement. | Choose MCP6001T-E/OT for cost-sensitive, wide-temp applications where 15 nV/√Hz noise and 1 pA bias are not required. |
Compared with OPA333AIDBVR and MCP6001T-E/OT, the TLV2731IDBVR uniquely balances ultra-low input bias current (1 pA), low noise (15 nV/√Hz), and micropower operation (850 μA) in an industrial-temperature SOT-23-5 package - making it optimal for high-impedance, battery-operated sensor front-ends requiring both precision and efficiency.
Availability
TLV2731IDBVR is available at Aetrix Electronics and suitable for industrial PLC analog inputs, optical transceiver modules, low-power audio preamplifiers, and multiplexed data-acquisition systems requiring stable component supply across extended temperature ranges.
Supply support for TLV2731IDBVR 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 decades of expertise in precision op amps and low-power signal chain solutions.
The TLV2731IDBVR belongs to TI's LinCMOS™ rail-to-rail op amp family, engineered for high-impedance sensor interfacing, portable instrumentation, and industrial signal conditioning where low bias current, low noise, and single-supply operation are essential.
FAQ
What is the maximum capacitive load the TLV2731IDBVR can drive stably?
The TLV2731IDBVR is stable with up to 100 pF directly at the output. For larger capacitive loads (e.g., >1 nF), insert a series isolation resistor (RISO = 50 Ω typical) between the OUT pin and the load to restore phase margin. This configuration is validated in TI's SLOS198B datasheet Figure 6-3 and supports stable operation with 5 nF loads in unity-gain buffer applications. TLV2731IDBVR's resistive output stage enables this robust capacitive drive capability without external compensation networks.
Does the TLV2731IDBVR support true rail-to-rail input operation?
No, the TLV2731IDBVR features rail-to-rail *output* swing but only extends its common-mode input voltage range to the negative rail (GND); the positive end is limited to VDD – 1.3 V. At 5 V supply, the usable input range is 0 V to 3.7 V. This design prioritizes ultra-low input bias current and noise over full rail-to-rail input - confirmed in Section 5.3 Recommended Operating Conditions. TLV2731IDBVR remains optimal for ground-referenced or single-ended sensor signals where input does not exceed VDD – 1.3 V.
What is the guaranteed input offset voltage specification for TLV2731IDBVR over temperature?
The TLV2731IDBVR guarantees a maximum input offset voltage of 3 mV across its full operating temperature range of –40°C to +85°C, as specified in Tables 5.4 and 5.6 of the SLOS198B datasheet. This value applies under standard test conditions (VDD = 3 V or 5 V, VIC = 0 V, RS = 50 Ω). The typical value is 0.7 mV at 25°C, but design-critical applications must use the 3 mV max for worst-case error budgeting - a key differentiator from commercial-grade variants like TLV2731CDBV (0°C–70°C, same 3 mV max).
Can TLV2731IDBVR operate from a 2.7 V supply while maintaining full 2 MHz bandwidth?
Yes, the TLV2731IDBVR is fully specified down to 2.7 V supply and maintains 1.9 MHz gain-bandwidth product at VDD = 3 V (Table 5.5), and 2 MHz at VDD = 5 V (Table 5.7). Its LinCMOS™ process ensures consistent AC performance across the entire 2.7–10 V range. At 2.7 V, slew rate drops to 0.24 V/μs (Table 5.5), which still supports ≤100 kHz small-signal bandwidths - sufficient for most sensor and industrial control loops. TLV2731IDBVR's datasheet explicitly validates operation at 2.7 V in both electrical and operating characteristics tables.
Is TLV2731IDBVR pin-compatible with other SOT-23-5 op amps like MCP6001 or TS3701?
No, TLV2731IDBVR is not pin-compatible with MCP6001 or TS3701. While all use SOT-23-5 packages, pin assignments differ: TLV2731IDBVR uses Pin 1=OUT, Pin 2=VDD+, Pin 3=IN+, Pin 4=IN–, Pin 5=GND; MCP6001 uses Pin 1=OUT, Pin 2=IN–, Pin 3=IN+, Pin 4=GND, Pin 5=VDD+; TS3701 is a comparator with different functional pinout. Swapping these devices requires PCB redesign. TLV2731IDBVR's unique pin configuration is defined in Figure 4-1 and Table 4-1 of SLOS198B - always verify pin functions before substitution.
TLV2731IDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
TLV2731IDBVR FAQ
1.How can I place an order for TLV2731IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2731IDBVR 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 TLV2731IDBVR reliable?
The price and inventory of TLV2731IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2731IDBVR is usually 5 days.
3.What payment methods are accepted for TLV2731IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2731IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2731IDBVR?
TLV2731IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2731IDBVR 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 TLV2731IDBVR?
For technical support, including TLV2731IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2731IDBVR requirements.
6.How does Aetrix verify that TLV2731IDBVR is sourced from the original manufacturer or authorized distributors?
All TLV2731IDBVR 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 TLV2731IDBVR meets industry standards.
7.What is the process for return or replacement of TLV2731IDBVR?
All TLV2731IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with TLV2731IDBVR, 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 TLV2731IDBVR part is unused and in its original packaging.
Return procedure for TLV2731IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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