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Texas Instruments TLV2231IDBVRG4
- Part No.:
- TLV2231IDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV2231IDBVRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,637
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Product details
Overview
TLV2231IDBVRG4 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 - optimized for low-voltage signal conditioning in battery-powered sensor interfaces.
For engineers reviewing the TLV2231IDBVRG4 datasheet, TLV2231IDBVRG4 pinout, TLV2231IDBVRG4 application, or TLV2231IDBVRG4 equivalent, key selection criteria include rail-to-rail output swing into 600 Ω loads, −40°C to +85°C industrial temperature rating, micropower operation (≤1.3 mA supply current), and high-impedance input compatibility with piezoelectric transducers and ADC front-ends.
Technical Context
The TLV2231IDBVRG4 uses LinCMOS™ process technology to achieve ultra-low input bias current (1 pA typ) and high input impedance (>1 TΩ common-mode resistance), enabling accurate amplification of high-impedance sources without loading error. Its rail-to-rail output stage supports full dynamic range in single-supply systems down to 3 V.
It features internal compensation for unity-gain stability with 600 Ω load and 100 pF capacitance, delivering 48° phase margin at 5 V. The device is fully characterized across −40°C to +85°C and specified for both 3 V and 5 V operation, with input common-mode range extending to the negative rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 10 V - enables direct use in 3.3 V and 5 V systems without level-shifting or LDO overhead |
| Gain-Bandwidth Product | 2 MHz at VDD = 5 V - supports stable closed-loop gain up to ~20 at 100 kHz for anti-aliasing or sensor filtering |
| Slew Rate | 1.6 V/µs at VDD = 5 V - sufficient for 100 kHz full-scale sine output with ≤1 Vpp amplitude without distortion |
| Input Voltage Noise | 15 nV/√Hz at f = 1 kHz - preserves SNR in low-level audio preamp and precision transducer signal chains |
| Input Bias Current | 1 pA typ - minimizes voltage error across >1 MΩ source impedances (e.g., pH electrodes, photodiodes) |
| Output Swing | Rail-to-rail - delivers >98% of supply range into 600 Ω, maximizing ADC utilization in single-supply data acquisition |
| Operating Temperature | −40°C to +85°C - qualified for industrial PLC I/O modules and server PSU monitoring circuits |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 2.8 mm footprint, surface-mount, tape-and-reel compatible; optimized layout separates IN+ and IN− by GND to suppress coupling, places OUT and IN− on same side for compact feedback routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: IN+ | Noninverting input | High-impedance node (1 TΩ) for reference or sensor signal; accepts common-mode voltage down to VDD− |
| 2: VDD−/GND | Negative power supply / ground | Reference return for all signals; must be low-impedance path to minimize noise coupling into inputs |
| 3: IN− | Inverting input | Feedback node; placed adjacent to OUT (Pin 4) to minimize parasitic inductance in high-frequency loops |
| 4: OUT | Amplifier output | Capable of sourcing/sinking ±4 mA into 600 Ω; rail-to-rail swing supports direct interface to SAR ADC references |
| 5: VDD+ | Positive power supply | Accepts 2.7–10 V; decoupling capacitor (0.1 µF) required within 2 mm for stable high-frequency performance |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full supply voltage range (e.g., 0–4.9 V at 5 V supply) into 600 Ω, eliminating need for dual supplies in ADC driver stages |
| 1 pA typical input bias current | Enables use with >10 MΩ source impedances (e.g., piezoelectric sensors) without significant offset drift or signal attenuation |
| 15 nV/√Hz input voltage noise | Supports 16-bit+ resolution in low-frequency (<10 kHz) measurement systems where thermal noise dominates |
| 2 MHz GBW at 5 V | Allows stable unity-gain configuration with 600 Ω load and 100 pF capacitance - verified via 48° phase margin |
| Specified at 3 V and 5 V | Guarantees performance across common low-voltage rails; eliminates design revalidation when migrating between 3.3 V and 5 V platforms |
Applications
| Low-Power Audio Preamplifier | Multiplexed Data-Acquisition Systems |
|---|---|
Use Scenario: Amplifying microphone or MEMS audio signals in portable medical monitors with 3.3 V supply and strict battery life targets. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op amp providing 20–40 dB gain with <15 nV/√Hz noise floor and <1.3 mA quiescent current. Use Value: Enables >90 dB SNR at 1 kHz while consuming <4 mW - critical for 7-day continuous operation on coin-cell batteries. | Use Scenario: Buffering and conditioning analog sensor outputs (temperature, pressure) before multiplexing into a shared 16-bit SAR ADC in industrial IoT nodes. IC Role / Device Role / Timing Role: High-input-impedance (1 TΩ), low-offset (3 mV max) buffer isolating sensors from multiplexer channel capacitance and crosstalk. Use Value: Prevents settling errors and gain nonlinearity during channel switching; rail-to-rail output ensures full ADC code utilization across 0–3.3 V range. |
| Optical Module Monitoring | Programmable Logic Controllers |
Use Scenario: Converting photodiode current to voltage and scaling laser bias monitor signals in SFP+ transceivers operating at 3.3 V. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) front-end with 1 pA input bias current minimizing dark-current error in low-light conditions. Use Value: Achieves sub-nA detection threshold and <0.5% gain error over temperature - essential for compliance with SFF-8472 optical diagnostics standards. | Use Scenario: Signal conditioning for 4–20 mA loop receivers and thermocouple inputs in DIN-rail mounted PLC analog input modules. IC Role / Device Role / Timing Role: Precision, industrial-temperature op amp providing cold-junction compensation, filtering, and level-shifting before sigma-delta ADC conversion. Use Value: −40°C to +85°C rating and 3 mV max input offset ensure <0.1% accuracy over full ambient range without calibration. |
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 offset drift vs TLV2231IDBVRG4's 0.5 µV/°C; higher 350 kHz GBW but lower 0.16 V/µs slew rate | Better for DC-critical applications (e.g., weigh scales); less suitable for AC-coupled audio or fast pulse conditioning | Select OPA333AIDBVR when offset drift dominates error budget; TLV2231IDBVRG4 preferred for bandwidth/noise trade-off in sensor front-ends |
| MCP6001UT-E/OT | Lower 1 MHz GBW and 0.6 V/µs slew rate; 100 nA input bias current (vs 1 pA); same SOT-23-5 package and 1.8–6 V supply range | Cost-optimized for non-critical general-purpose buffering; unsuitable for high-impedance or low-noise designs | Choose MCP6001UT-E/OT only for low-cost, low-performance roles (e.g., LED bias control); TLV2231IDBVRG4 remains optimal for precision sensing |
Compared with OPA333AIDBVR and MCP6001UT-E/OT, TLV2231IDBVRG4 uniquely balances rail-to-rail output, 1 pA input bias, 15 nV/√Hz noise, and 2 MHz bandwidth - making it the only option among the three qualified for simultaneous high-impedance source interfacing and moderate-speed signal conditioning in industrial temperature environments.
Availability
TLV2231IDBVRG4 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 extended temperature ranges and long production lifecycles.
Supply support for TLV2231IDBVRG4 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 op amp innovation and broad industrial qualification.
The TLV2231IDBVRG4 belongs to TI's LinCMOS™ low-power precision op amp family, designed specifically for battery-operated instrumentation, sensor signal conditioning, and single-supply industrial interfaces where rail-to-rail output and femtoampere-level input bias are critical.
FAQ
What is the maximum capacitive load the TLV2231IDBVRG4 can drive stably?
The TLV2231IDBVRG4 is unity-gain stable with up to 100 pF capacitive load when driving a 600 Ω resistor, achieving 48° phase margin at 5 V. For larger loads (e.g., >500 pF), an isolation resistor (RISO ≈ 50 Ω) in series with the output restores stability without degrading DC accuracy - a technique validated in TI's application note SLOS158E Section 7.1. This makes TLV2231IDBVRG4 suitable for driving ADC reference inputs and cable-shield buffers.
Does the TLV2231IDBVRG4 support true rail-to-rail input common-mode range?
No - the TLV2231IDBVRG4 supports rail-to-rail *output* swing, but its input common-mode voltage range extends only to the negative rail (VDD−) and up to (VDD+ − 1.3 V). At 5 V supply, this yields a usable input range of 0 V to 3.7 V. This limitation is explicitly defined in Section 6.3 Recommended Operating Conditions and confirmed in Figures 6-3 and 6-4 of the datasheet. For full rail-to-rail input, consider TI's TLV9001 or similar devices.
What is the guaranteed input offset voltage specification for TLV2231IDBVRG4 over temperature?
The TLV2231IDBVRG4 has a maximum input offset voltage of 3 mV across its full operating range of −40°C to +85°C, as specified in Sections 6.4 and 6.6 of the datasheet for both 3 V and 5 V supply conditions. Its temperature coefficient is tightly controlled at 0.5 µV/°C typ, ensuring minimal drift - for example, contributing only ~60 µV additional offset over an 120°C span. This performance is validated for the "I" grade (industrial temperature) variant, which TLV2231IDBVRG4 belongs to.
Can TLV2231IDBVRG4 operate from a 2.7 V single supply while maintaining rail-to-rail output?
Yes - the TLV2231IDBVRG4 is fully specified for 2.7 V single-supply operation per Section 6.3 Recommended Operating Conditions. At 2.7 V, it delivers rail-to-rail output swing (e.g., ~0.05 V to ~2.65 V into 600 Ω), with 1.9 MHz gain-bandwidth and 0.24 V/µs slew rate (Section 6.5). This enables reliable use in energy-harvesting and ultra-low-power sensor nodes where supply headroom is constrained, without sacrificing dynamic range or stability.
Is TLV2231IDBVRG4 pin-compatible with other SOT-23-5 op amps like the TLV2461 or OPA344?
No - TLV2231IDBVRG4 uses TI's standard SOT-23-5 pinout (IN+, GND, IN−, OUT, VDD+), but TLV2461 and OPA344 follow different pin assignments (e.g., TLV2461 places VDD+ on Pin 1 and IN+ on Pin 2). Swapping them without board revision causes functional failure. Always verify pin functions using Table 5-1 in the TLV2231IDBVRG4 datasheet - the pinout is optimized for layout (IN+/IN− separated by GND, OUT/IN− co-located), not generic compatibility.
TLV2231IDBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- 710 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
TLV2231IDBVRG4 FAQ
1.How can I place an order for TLV2231IDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2231IDBVRG4 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 TLV2231IDBVRG4 reliable?
The price and inventory of TLV2231IDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2231IDBVRG4 is usually 5 days.
3.What payment methods are accepted for TLV2231IDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2231IDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2231IDBVRG4?
TLV2231IDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2231IDBVRG4 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 TLV2231IDBVRG4?
For technical support, including TLV2231IDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2231IDBVRG4 requirements.
6.How does Aetrix verify that TLV2231IDBVRG4 is sourced from the original manufacturer or authorized distributors?
All TLV2231IDBVRG4 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 TLV2231IDBVRG4 meets industry standards.
7.What is the process for return or replacement of TLV2231IDBVRG4?
All TLV2231IDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLV2231IDBVRG4, 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 TLV2231IDBVRG4 part is unused and in its original packaging.
Return procedure for TLV2231IDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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