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Texas Instruments TLV2731CDBVR
- Part No.:
- TLV2731CDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV2731CDBVR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,399
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Product details
Overview
TLV2731CDBVR 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 TLV2731CDBVR datasheet, TLV2731CDBVR pinout, TLV2731CDBVR application, or TLV2731CDBVR 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 TLV2731CDBVR 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 in 3 V and 5 V systems without level-shifting. |
| Gain-Bandwidth Product | 2 MHz at VDD = 5 V - supports audio-band amplification and anti-aliasing filtering up to ~200 kHz closed-loop. |
| Slew Rate | 1.6 V/μs at VDD = 5 V - ensures <1 μs settling for 1 V step, suitable for multiplexed data acquisition. |
| Input Offset Voltage | 3 mV max over 0°C–70°C - maintains accuracy in DC-coupled sensor front-ends without trimming. |
| Input Bias Current | 1 pA typical - minimizes voltage error across >1 MΩ source impedances (e.g., pH electrodes, pyroelectric sensors). |
| Input Voltage Noise | 15 nV/√Hz at 1 kHz - preserves SNR in low-level analog signal chains such as microphone preamps. |
| Common-Mode Input Range | Includes negative rail (0 V) - allows direct sensing of signals referenced to ground in single-supply systems. |
| Output Swing | Rail-to-rail - delivers full 0–VDD output range, maximizing ADC utilization in 3 V/5 V systems. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 2.8 mm footprint, surface-mount, tape-and-reel compatible. Ultra-compact size reduces PCB area by 67% vs. SOIC-8, enabling 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 supply | Accepts 2.7–10 V; decoupling capacitor (0.1 μF) required within 2 mm for PSRR optimization. |
| IN+ (Pin 3) | Noninverting input | High-impedance node (1 TΩ); sensitive to layout-induced leakage - guard ring recommended. |
| IN− (Pin 4) | Inverting input | Differential input node; matched trace length critical when used in transimpedance configurations. |
| VDD−/GND (Pin 5) | Negative supply / ground | Reference for all inputs and output; must connect directly to low-impedance ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Enables full-scale utilization of 3 V/5 V ADCs without external level-shifting circuitry. |
| 1 pA typical input bias current | Supports accurate amplification of signals from high-Z sources (e.g., ceramic microphones, strain gauges) without significant DC error. |
| 15 nV/√Hz input voltage noise | Preserves signal integrity in low-amplitude, wideband applications like optical module monitoring. |
| 2 MHz GBW at 5 V | Provides sufficient bandwidth for anti-aliasing filters and active low-pass stages in 100 kSPS data acquisition systems. |
| Stable into 600 Ω loads | Meets telecom line-driver requirements and simplifies interface to legacy analog test equipment. |
| Capacitive load drive enhancement | Configurable via external RISO to drive up to 5 nF - ideal for reference buffers and MOSFET gate drivers. |
Applications
| Low-Power Audio Preamplifier | Multiplexed Data-Acquisition Systems |
|---|---|
Use Scenario: Amplifying weak signals from electret microphones or MEMS audio sensors in portable medical monitors. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op-amp configured as noninverting amplifier with gain = 100, AC-coupled input. Use Value: 15 nV/√Hz noise and 1 pA input bias current preserve SNR and prevent loading of high-Z microphone elements. | Use Scenario: Buffering and conditioning analog sensor outputs (temperature, pressure) before routing through analog multiplexer to shared ADC. IC Role / Device Role / Timing Role: Unity-gain buffer placed immediately after each sensor to isolate channel crosstalk and maintain signal integrity. Use Value: Rail-to-rail output swing ensures full 0–3 V range reaches ADC; 2 MHz GBW supports fast settling between multiplexer channels. |
| Optical Module Monitoring | Programmable Logic Controllers (PLCs) |
Use Scenario: Converting photodiode current to voltage in fiber-optic transceiver status monitoring circuits. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with feedback resistor = 100 kΩ, operating from 3.3 V supply. Use Value: 1 pA input bias current avoids significant offset error; 1.6 V/μs slew rate supports 100 kHz modulation envelope detection. | Use Scenario: Signal conditioning for 4–20 mA loop receivers and analog input modules in industrial control cabinets. IC Role / Device Role / Timing Role: Precision buffer and level-shifter converting field sensor outputs to PLC ADC input range (0–10 V or ±10 V). Use Value: 3 mV max VIO and 70 dB CMRR ensure <0.1% measurement error in noisy factory environments. |
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, 6.5 V/μs slew rate, but 2× higher supply current (400 μA vs. 1.2 mA typ.) | Better for high-speed active filters; less optimal for micropower (<1 mA) battery systems | Select OPA316IDBVR only if bandwidth >5 MHz is required and power budget allows. |
| MCP6001T-E/OT | Lower 1 MHz GBW, 0.6 V/μs slew rate, 17 nV/√Hz noise, but lower 100 μA supply current | Preferred for sub-100 kHz sensor buffering where ultra-low quiescent current is critical | Choose MCP6001T-E/OT when system sleep current dominates and 2 MHz bandwidth is unnecessary. |
Compared with OPA316IDBVR and MCP6001T-E/OT, the TLV2731CDBVR uniquely balances 2 MHz bandwidth, rail-to-rail output, and 1.2 mA supply current - making it the optimal choice for 3 V–5 V data-acquisition front-ends requiring both speed and micropower efficiency.
Availability
TLV2731CDBVR 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.
Supply support for TLV2731CDBVR 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, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TLV2731CDBVR belongs to TI's LinCMOS™ precision op-amp family, designed specifically for low-voltage, low-power signal conditioning in space-constrained applications where rail-to-rail output and ultra-low input bias current are essential.
FAQ
What is the operating temperature range for TLV2731CDBVR?
The TLV2731CDBVR is rated for an operating free-air temperature range of 0°C to 70°C, per its 'C' grade designation. This makes it suitable for commercial and industrial indoor applications but not extended-temperature environments requiring –40°C to +85°C operation (which would require the TLV2731IDBVR variant). All electrical specifications in the datasheet labeled 'TLV2731C' apply within this 0°C–70°C range.
Does TLV2731CDBVR support rail-to-rail input?
No, the TLV2731CDBVR does not support rail-to-rail input - only rail-to-rail output. Its common-mode input voltage range extends to the negative rail (0 V) but stops 1.3 V below the positive rail (e.g., up to 3.7 V at VDD = 5 V). This limitation is clearly specified in Section 5.3 (Recommended Operating Conditions) and confirmed in Figures 5-3 and 5-4 of the datasheet.
Can TLV2731CDBVR drive a 600 Ω load reliably?
Yes, the TLV2731CDBVR is explicitly characterized and guaranteed to drive 600 Ω loads with stable operation and minimal distortion. Section 5.7 confirms 2 MHz gain-bandwidth and 1.6 V/μs slew rate under 600 Ω load conditions at 5 V supply, and Figure 5-13 shows phase margin remains >48° at unity gain into 600 Ω. This meets telecom line-driver requirements and supports direct interfacing to legacy test equipment.
What is the maximum capacitive load TLV2731CDBVR can drive without external compensation?
Without external compensation, the TLV2731CDBVR is stable into ≤100 pF capacitive loads, as verified by phase margin measurements in Figure 5-33. For larger loads (up to 5 nF), the datasheet recommends adding a series isolation resistor (RISO) between the output and load - typically 50 Ω - to restore phase margin and suppress ringing, as detailed in Section 6.1.1 and Figure 6-3.
Is TLV2731CDBVR pin-compatible with other SOT-23-5 op-amps like MCP6001 or TS912?
No, TLV2731CDBVR is not pin-compatible with MCP6001 or TS912. While all three use SOT-23-5 packages, their pinouts differ: TLV2731CDBVR 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+; TS912 uses Pin 1=OUT, Pin 2=IN−, Pin 3=IN+, Pin 4=VDD−, Pin 5=VDD+. Swapping them without board revision will cause functional failure.
TLV2731CDBVR 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
TLV2731CDBVR FAQ
1.How can I place an order for TLV2731CDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2731CDBVR 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 TLV2731CDBVR reliable?
The price and inventory of TLV2731CDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2731CDBVR is usually 5 days.
3.What payment methods are accepted for TLV2731CDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2731CDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2731CDBVR?
TLV2731CDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2731CDBVR 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 TLV2731CDBVR?
For technical support, including TLV2731CDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2731CDBVR requirements.
6.How does Aetrix verify that TLV2731CDBVR is sourced from the original manufacturer or authorized distributors?
All TLV2731CDBVR 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 TLV2731CDBVR meets industry standards.
7.What is the process for return or replacement of TLV2731CDBVR?
All TLV2731CDBVR units undergo pre-shipment inspection (PSI). If there is an issue with TLV2731CDBVR, 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 TLV2731CDBVR part is unused and in its original packaging.
Return procedure for TLV2731CDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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