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Texas Instruments TLV2731CDBVT
- Part No.:
- TLV2731CDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV2731CDBVT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:689
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Product details
Overview
TLV2731CDBVT 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 TLV2731CDBVT datasheet, TLV2731CDBVT pinout, TLV2731CDBVT application, or TLV2731CDBVT equivalent, key selection considerations include its rail-to-rail output swing, ultra-low input bias current for high-impedance source interfacing, 3 mV max input offset voltage over 0°C–70°C, and verified capacitive load drive capability up to 5 nF with RISO compensation.
Technical Context
The TLV2731CDBVT employs a LinCMOS™ input stage enabling 1 pA typical input bias current and 1 TΩ common-mode input resistance, making it suitable for piezoelectric transducer and photodiode signal conditioning. Its rail-to-rail output stage supports full dynamic range across 3 V and 5 V single-supply operation.
It features internal compensation for unity-gain stability into 600 Ω loads and exhibits 48° phase margin with 100 pF capacitive load. The device is fully characterized from 0°C to 70°C (TLV2731C grade) and supports stable operation with isolation resistors for extended capacitive load drive up to 5 nF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 10 V - enables direct use with Li-ion, 3.3 V, and 5 V rails without regulation |
| Gain-Bandwidth Product | 2 MHz at VDD = 5 V - supports audio-band and medium-speed sensor signal amplification |
| Slew Rate | 1.6 V/μs at VDD = 5 V - ensures faithful reproduction of fast 100 kHz small-signal transients |
| Input Bias Current | 1 pA typical - minimizes voltage error when amplifying signals from >1 GΩ sources (e.g., pH electrodes) |
| Input Voltage Noise | 15 nV/√Hz at 1 kHz - preserves SNR in low-level analog front-ends for instrumentation |
| Input Offset Voltage | 3 mV max over 0°C–70°C - enables DC-coupled amplification without external trimming in cost-sensitive designs |
| Output Swing | Rail-to-rail - delivers full 0–VDD output range, maximizing ADC utilization in single-supply systems |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 2.8 mm footprint, 5-terminal surface-mount package optimized for minimal board area and proximity to high-impedance sensors.
| 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 supply | Connects to main power rail (2.7–10 V); decoupling capacitor (0.1 μF) required within 2 mm |
| IN+ (Pin 3) | Noninverting input | High-impedance node (1 TΩ) - sensitive to PCB leakage; guard ring recommended for <1 pA bias accuracy |
| IN– (Pin 4) | Inverting input | Differential input node; used with feedback network to set closed-loop gain and bandwidth |
| VDD–/GND (Pin 5) | Negative supply / ground | Reference return path for all currents; must be low-impedance and tied directly to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Enables full-scale utilization of 12-bit+ ADCs in single-supply 3 V systems without level-shifting circuitry |
| 1 pA typical input bias current | Reduces input voltage error to <1 mV with 1 GΩ source impedance - critical for electrochemical and piezoelectric sensors |
| 15 nV/√Hz input voltage noise | Supports sub-10 μVPP signal amplification in 10 Hz–20 kHz bandwidths without dominant noise contribution |
| 2.7 V minimum supply voltage | Permits direct operation from single-cell Li-ion (2.7–4.2 V) or regulated 3.3 V rails, eliminating LDO overhead |
| Stable into 600 Ω loads | Meets telecom line-driver requirements and drives ADC reference buffers without external isolation |
Applications
| Low-Power Sensor Interface | Multiplexed Data Acquisition |
|---|---|
Use Scenario: Amplifying microvolt-level outputs from thermopiles or strain gauges in portable gas analyzers. IC Role / Device Role / Timing Role: Precision DC-coupled preamplifier with rail-to-rail output driving SAR ADC inputs. Use Value: 1 pA input bias current prevents signal loss across high-Z sensor elements; 3 mV VIO max avoids calibration in production. | Use Scenario: Channel-selectable signal conditioning in 16-channel industrial PLC analog input modules. IC Role / Device Role / Timing Role: Single op-amp per channel for anti-alias filtering and gain setting before multiplexer switching. Use Value: SOT-23-5 footprint minimizes board area per channel; 2 MHz GBW supports ≤100 kSPS sampling with adequate settling. |
| Optical Module Monitoring | Server PSU Feedback Loop |
Use Scenario: Converting photodiode current to voltage in SFP+ transceiver optical power monitors. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with low input capacitance and low noise. Use Value: 1 pF input capacitance and 15 nV/√Hz noise preserve bandwidth and SNR for 10 Gbps link diagnostics. | Use Scenario: Isolating and scaling isolated voltage sense signals in 48 V server power supply feedback networks. IC Role / Device Role / Timing Role: High-impedance buffer and level translator between optocoupler output and PWM controller error amp. Use Value: Rail-to-rail output ensures full 0–3.3 V range compatibility with digital PWM controllers; 10 V max VDD accommodates auxiliary bias rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA316IDBVR | Higher 10 MHz GBW, 1.5 V/μs slew rate, but 2.5 pA IIB; 5 V max supply | Better for higher-frequency active filters; less suitable for >5 V or ultra-high-Z DC sensors | Choose OPA316IDBVR when bandwidth >5 MHz is required and supply ≤5 V |
| MCP6001T-E/OT | Lower 1 MHz GBW, 0.6 V/μs slew rate, 100 pA IIB, wider –40°C to +125°C temp range | Cost-optimized for non-precision, wide-temp industrial controls; not for low-noise or high-Z sources | Choose MCP6001T-E/OT for cost-sensitive, wide-temperature applications where 100 pA IIB is acceptable |
Compared with OPA316IDBVR and MCP6001T-E/OT, the TLV2731CDBVT uniquely balances ultra-low input bias current (1 pA), rail-to-rail output, and 2 MHz bandwidth in a 2.7–10 V supply range - making it optimal for precision, low-power, single-supply sensor signal chains where input impedance exceeds 1 GΩ and supply headroom is variable.
Availability
TLV2731CDBVT is available at Aetrix Electronics and suitable for low-power sensor interfaces, multiplexed data-acquisition systems, and optical module monitoring requiring stable component supply across industrial temperature grades.
Supply support for TLV2731CDBVT 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TLV2731CDBVT belongs to TI's LinCMOS™ precision op-amp family, designed specifically for low-power, high-input-impedance signal conditioning in battery-operated and space-constrained instrumentation.
FAQ
What is the operating temperature range for the TLV2731CDBVT?
The TLV2731CDBVT is rated for an operating free-air temperature range of 0°C to 70°C, corresponding to the 'C' grade designation. This makes it suitable for commercial and industrial indoor applications where ambient temperatures remain within this envelope. It is not qualified for extended temperature operation like the TLV2731IDBV (–40°C to +85°C). All electrical specifications in the datasheet for TLV2731CDBVT are guaranteed across this 0°C–70°C range.
Does the TLV2731CDBVT support rail-to-rail input operation?
No, the TLV2731CDBVT does not support rail-to-rail input operation. Its common-mode input voltage range extends to the negative rail (VDD–/GND) but only up to VDD– + (VDD – 1.3 V) - for example, 0 V to 3.7 V at VDD = 5 V. While the output swings rail-to-rail, the input stage is not designed for full supply-range common-mode operation. This limitation is explicitly documented in Section 5.3 (Recommended Operating Conditions) of the TLV2731 datasheet.
Can the TLV2731CDBVT drive a 1000 pF capacitive load stably?
Yes, the TLV2731CDBVT can drive a 1000 pF capacitive load stably when configured with an isolation resistor (RISO) of 50 Ω in series with the output, as validated in Figure 6-1 and Figure 6-2 of the datasheet. Without RISO, instability (ringing/overshoot) occurs above ~100 pF. With RISO = 50 Ω, the device maintains ≤10% overshoot and adequate phase margin even at 5000 pF - making TLV2731CDBVT suitable for reference buffering and MOSFET gate drive where large capacitive loads are present.
What is the maximum output current capability of the TLV2731CDBVT?
The TLV2731CDBVT has a continuous short-circuit output current limit of ±50 mA, as specified in Section 5.1 (Absolute Maximum Ratings). However, its practical linear output current is lower: at VDD = 5 V, it delivers ±4 mA while maintaining VOH ≥ 4.6 V and VOL ≤ 160 mV (Section 5.6). Sustained output currents above ±2 mA may cause thermal derating in the SOT-23-5 package. For loads requiring >±2 mA, verify junction temperature rise using the 1.2 mW/°C derating factor from the Dissipation Rating Table.
Is the TLV2731CDBVT pin-compatible with other SOT-23-5 op-amps like the TLV2371?
No, the TLV2731CDBVT is not pin-compatible with the TLV2371. Although both are single SOT-23-5 op-amps, their pinouts differ: TLV2731CDBVT assigns VDD+ to Pin 2 and VDD–/GND to Pin 5, whereas TLV2371 places VDD–/GND on Pin 2 and VDD+ on Pin 5. Swapping these devices without PCB revision will result in reverse supply polarity and immediate damage. Always verify pin function mapping - not just package outline - before substitution. The TLV2731CDBVT pinout is defined in Table 4-1 and Figure 4-1 of its datasheet.
TLV2731CDBVT 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TLV2731CDBVT FAQ
1.How can I place an order for TLV2731CDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2731CDBVT 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 TLV2731CDBVT reliable?
The price and inventory of TLV2731CDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2731CDBVT is usually 5 days.
3.What payment methods are accepted for TLV2731CDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2731CDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2731CDBVT?
TLV2731CDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2731CDBVT 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 TLV2731CDBVT?
For technical support, including TLV2731CDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2731CDBVT requirements.
6.How does Aetrix verify that TLV2731CDBVT is sourced from the original manufacturer or authorized distributors?
All TLV2731CDBVT 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 TLV2731CDBVT meets industry standards.
7.What is the process for return or replacement of TLV2731CDBVT?
All TLV2731CDBVT units undergo pre-shipment inspection (PSI). If there is an issue with TLV2731CDBVT, 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 TLV2731CDBVT part is unused and in its original packaging.
Return procedure for TLV2731CDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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