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Texas Instruments TLV2231CDBVT
- Part No.:
- TLV2231CDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV2231CDBVT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,592
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Product details
Overview
TLV2231CDBVT 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 supply, and 15 nV/√Hz input voltage noise at 1 kHz - optimized for low-voltage (2.7–10 V), single-supply signal conditioning in space-constrained systems.
For engineers reviewing the TLV2231CDBVT datasheet, TLV2231CDBVT pinout, TLV2231CDBVT application, or TLV2231CDBVT equivalent, key selection criteria include rail-to-rail output swing, 1 pA typical input bias current, 3 mV max input offset voltage over 0°C to 70°C, 750–1200 µA supply current, and SOT-23-5 layout compatibility with high-impedance sensor interfaces.
Technical Context
The TLV2231CDBVT employs a CMOS input stage with ultra-low input bias current (1 pA typ) and high input impedance (>1 TΩ common-mode, >540 GΩ differential), enabling accurate amplification of high-impedance sources like piezoelectric transducers. Its rail-to-rail output stage supports full dynamic range across 2.7–10 V supplies without requiring split rails.
It achieves stability driving 600 Ω loads and moderate capacitive loads (up to ~5000 pF with isolation resistor), with phase margin ≥48° at unity gain and 100 pF load. The device is fully characterized at 3 V and 5 V, with guaranteed operation from 0°C to +70°C (C-grade).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 10 V - enables direct integration into 3 V and 5 V systems without level-shifting. |
| Gain-Bandwidth Product | 2 MHz at VDD = 5 V - supports stable closed-loop gain up to ~20 at 100 kHz for sensor signal amplification. |
| Slew Rate | 1.6 V/µs at VDD = 5 V - ensures faithful reproduction of fast-changing analog signals (e.g., audio preamp transients). |
| Input Offset Voltage | Max 3 mV over 0°C to +70°C - limits DC error in precision DC-coupled gain stages without trimming. |
| Input Bias Current | 1 pA typical - minimizes voltage drop across high-impedance source networks (e.g., >100 MΩ sensors). |
| Output Swing | Rail-to-rail - delivers full-scale output (e.g., 0.01 V to 4.99 V at 5 V supply), maximizing ADC utilization. |
| Input Voltage Noise | 15 nV/√Hz at 1 kHz - critical for low-noise amplification of microvolt-level sensor outputs. |
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 minimize coupling; OUT and IN– co-located for compact feedback routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: IN+ | Noninverting input | High-impedance node for reference or signal input; accepts common-mode voltage down to VDD–. |
| 2: VDD–/GND | Negative power supply / ground | Reference return path for both inputs and output; must be low-impedance for noise immunity. |
| 3: IN– | Inverting input | Feedback node; placed adjacent to OUT to minimize parasitic inductance in high-frequency loops. |
| 4: OUT | Amplifier output | Rail-to-rail capable; drives 600 Ω loads directly; requires local 0.1 µF decoupling at VDD+. |
| 5: VDD+ | Positive power supply | Accepts 2.7–10 V; connects to filtered supply; shares decoupling capacitor with adjacent ICs if same rail. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Enables maximum signal dynamic range in single-supply systems, reducing need for level-shifting before ADCs. |
| 15 nV/√Hz input voltage noise | Preserves signal integrity in low-amplitude sensor front-ends (e.g., thermopiles, photodiodes) without added filtering. |
| 1 pA typical input bias current | Eliminates significant DC error when interfacing with megaohm-range sources like pH electrodes or piezoelectric elements. |
| 2.7 V minimum supply voltage | Supports battery-powered designs using single Li-ion (3.0–4.2 V) or two alkaline cells (2.4–3.2 V). |
| Optimized SOT-23-5 pinout | Ground between inputs suppresses leakage paths; OUT/IN– adjacency simplifies stable noninverting/inverting layout. |
Applications
| Low-Power Audio Preamplifier | Multiplexed Data-Acquisition Systems |
|---|---|
Use Scenario: Amplifying microphone or piezoelectric transducer signals in portable audio recorders or voice-controlled IoT nodes. IC Role / Device Role / Timing Role: Single-supply, low-noise, rail-to-rail op-amp providing 20–50 dB gain with minimal quiescent power. Use Value: 15 nV/√Hz noise and 1 pA bias current preserve weak audio signals; 750 µA supply current extends battery life in always-on listening modes. | Use Scenario: Buffering and conditioning analog sensor outputs (temperature, pressure, humidity) before multiplexer switching in industrial PLCs. IC Role / Device Role / Timing Role: High-input-impedance unity-gain buffer isolating sensors from multiplexer channel capacitance and crosstalk. Use Value: Rail-to-rail output ensures full-scale voltage delivery to successive ADC stages; 2.7 V operation supports wide-input-range sensor supplies. |
| Optical Module Monitoring | Server PSU Feedback Loop |
Use Scenario: Converting photodiode current to voltage and amplifying monitor photodiode signals in fiber-optic transceivers. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) front-end with low input bias current to avoid dark-current errors. Use Value: 1 pA input bias current prevents false offset in low-light conditions; 2 MHz bandwidth supports real-time optical power monitoring. | Use Scenario: Sensing output voltage ripple and providing error amplification in isolated DC-DC converters within server power supplies. IC Role / Device Role / Timing Role: Precision error amplifier in voltage feedback loop of isolated flyback or forward converters. Use Value: 3 mV max input offset ensures tight regulation tolerance; rail-to-rail output drives optocoupler LED directly without external level shift. |
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 TLV2231CDBVT's 0.5 µV/°C; higher 350 kHz GBW but lower 1.2 V/µs slew rate. | Better for DC-critical applications (e.g., precision weigh scales); less suitable for AC-coupled audio or fast pulse response. | Choose OPA333AIDBVR when ultra-low drift dominates; TLV2231CDBVT preferred for cost-sensitive, moderate-speed signal chains. |
| MCP6001UT-E/OT | Lower 1 MHz GBW and 0.6 V/µs slew rate; similar 1 pA bias current but higher 25 nV/√Hz noise; rated for 1.8–6 V supply. | Targeted at ultra-low-power MCU peripherals; insufficient bandwidth for 20 kHz audio or fast data acquisition. | Select MCP6001UT-E/OT only for sub-100 kHz, battery-life-optimized designs; TLV2231CDBVT offers superior speed/noise trade-off. |
Compared with OPA333AIDBVR and MCP6001UT-E/OT, TLV2231CDBVT provides the best balance of 2 MHz bandwidth, 15 nV/√Hz noise, rail-to-rail output, and 1 pA bias current in the SOT-23-5 package - making it optimal for space-constrained, single-supply analog front-ends demanding both speed and precision.
Availability
TLV2231CDBVT is available at Aetrix Electronics and suitable for low-power audio preamplifiers, multiplexed data-acquisition systems, and optical module monitoring requiring stable component supply and long-term production continuity.
Supply support for TLV2231CDBVT 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 delivering analog and embedded processing solutions, with deep expertise in precision amplifiers and low-power design.
The TLV2231CDBVT belongs to TI's LinCMOS™ rail-to-rail op-amp family, engineered for low-voltage, low-noise, high-input-impedance signal conditioning in portable, industrial, and telecom equipment.
FAQ
What is the operating temperature range for the TLV2231CDBVT?
The TLV2231CDBVT is specified for commercial-grade operation from 0°C to +70°C. This range is validated per its "C" suffix designation and applies to all electrical characteristics in the datasheet unless otherwise noted. It is not rated for extended industrial temperatures (–40°C to +85°C), which apply to the TLV2231IDBV variant. Designers must ensure ambient PCB temperature remains within this window during full-load operation.
Does the TLV2231CDBVT support true rail-to-rail input?
No, the TLV2231CDBVT features rail-to-rail *output* swing only. Its common-mode input voltage range extends to the negative rail (VDD–) but stops 1.3 V below the positive rail (VDD+ – 1.3 V) at 5 V supply. For example, with 5 V supply, valid input common-mode range is 0 V to 3.7 V. This differs from full rail-to-rail input/output op-amps and must be considered when biasing input signals near VDD+.
Can the TLV2231CDBVT drive a 600 Ω load effectively?
Yes, the TLV2231CDBVT is explicitly characterized driving 600 Ω loads at 5 V supply, delivering ±4 mA output current with rail-to-rail swing (e.g., VOL ≤ 160 mV at 1 mA sink). Its 1.6 V/µs slew rate and 2 MHz GBW ensure fidelity for audio and instrumentation signals into such loads. Layout best practices - including short traces and local 0.1 µF ceramic decoupling at VDD+ - are essential to maintain performance.
What is the typical supply current of the TLV2231CDBVT at 3 V operation?
At 3 V supply and +25°C, the TLV2231CDBVT draws 750–1200 µA typical supply current with no load. Over the full 0°C to +70°C range, maximum supply current is 1500 µA. This ultra-low quiescent current enables use in battery-powered devices where average system current budget is under 1 mA, such as handheld environmental monitors or wearable health sensors.
How does the pinout of the TLV2231CDBVT improve PCB layout?
The TLV2231CDBVT's SOT-23-5 pinout places GND (Pin 2) between IN+ (Pin 1) and IN– (Pin 3) to minimize leakage and capacitive coupling between inputs. OUT (Pin 4) and IN– (Pin 3) are adjacent to simplify short, low-inductance feedback paths. This layout reduces noise pickup and improves stability - especially critical in high-gain or high-frequency configurations - without requiring complex board routing or guard traces.
TLV2231CDBVT 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:
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TLV2231CDBVT FAQ
1.How can I place an order for TLV2231CDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2231CDBVT 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 TLV2231CDBVT reliable?
The price and inventory of TLV2231CDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2231CDBVT is usually 5 days.
3.What payment methods are accepted for TLV2231CDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2231CDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2231CDBVT?
TLV2231CDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2231CDBVT 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 TLV2231CDBVT?
For technical support, including TLV2231CDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2231CDBVT requirements.
6.How does Aetrix verify that TLV2231CDBVT is sourced from the original manufacturer or authorized distributors?
All TLV2231CDBVT 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 TLV2231CDBVT meets industry standards.
7.What is the process for return or replacement of TLV2231CDBVT?
All TLV2231CDBVT units undergo pre-shipment inspection (PSI). If there is an issue with TLV2231CDBVT, 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 TLV2231CDBVT part is unused and in its original packaging.
Return procedure for TLV2231CDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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