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Texas Instruments TLV2231CDBVRG4
- Part No.:
- TLV2231CDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV2231CDBVRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,549
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Product details
Overview
TLV2231CDBVRG4 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 supply - optimized for low-voltage signal conditioning in battery-powered sensor interfaces.
For engineers reviewing the TLV2231CDBVRG4 datasheet, TLV2231CDBVRG4 pinout, TLV2231CDBVRG4 application, or TLV2231CDBVRG4 equivalent, key selection criteria include rail-to-rail output swing into 600 Ω loads, 3 mV max input offset voltage over 0°C–70°C, micropower operation (≤1.3 mA supply current), and SOT-23 layout-optimized pinout for high-impedance source buffering.
Technical Context
The TLV2231CDBVRG4 employs 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 like piezoelectric transducers and pH electrodes. Its rail-to-rail output stage supports full dynamic range in single-supply 3 V systems without level-shifting circuitry.
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 0°C–70°C (C-grade) 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 integration into 3 V microcontroller I/O domains and 5 V legacy systems without regulators. |
| Gain-Bandwidth Product | 2 MHz at VDD = 5 V - supports stable closed-loop gain up to ~20 at 100 kHz for anti-aliasing filter stages. |
| Slew Rate | 1.6 V/µs at VDD = 5 V - sufficient for 10-bit ADC driving at 100 kSPS with ≤0.5 LSB error due to settling. |
| Input Offset Voltage | 3 mV max (0°C–70°C) - ensures ≤0.3% full-scale error in 1 V reference buffer applications. |
| Input Bias Current | 1 pA typical - minimizes voltage drop across >100 MΩ source impedances (e.g., photodiode bias networks). |
| Output Drive | ±4 mA into 600 Ω - directly interfaces with telecom line drivers and SAR ADC input networks without external buffers. |
| Input Voltage Noise | 15 nV/√Hz at 1 kHz - preserves SNR in audio preamp stages with source impedances <10 kΩ. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 2.8 mm footprint, 5-terminal surface-mount package with exposed pad option (not applicable to TLV2231CDBVRG4). Optimized layout separates IN+ and IN− by GND to suppress coupling; OUT and IN− co-located for compact feedback routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: IN+ | Noninverting Input | High-impedance node (1 TΩ) for reference or sensor signal injection; immune to ground bounce when adjacent to Pin 2 (GND). |
| 2: VDD−/GND | Negative Supply / Ground Reference | Primary return path for input bias current and output load current; must be low-inductance connection to system ground plane. |
| 3: IN− | Inverting Input | Feedback node location; placed adjacent to OUT (Pin 4) to minimize parasitic capacitance in unity-gain configurations. |
| 4: OUT | Amplifier Output | Rail-to-rail capable output driving 600 Ω loads to within 160 mV of rails at 1 mA - suitable for direct ADC input termination. |
| 5: VDD+ | Positive Supply | Power input referenced to Pin 2; accepts 2.7–10 V; requires local 0.1 µF ceramic decoupling between Pins 2 and 5. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Drives loads to within 100 mV of either rail at 500 µA - eliminates need for dual supplies in data-acquisition front-ends interfacing with 3 V ADCs. |
| 1 pA input bias current | Enables use with >1 GΩ source impedances (e.g., capacitive humidity sensors) without significant offset drift or signal attenuation. |
| 15 nV/√Hz input voltage noise | Preserves resolution in low-level sensor signal chains (e.g., thermopile amplifiers) where source impedance is <5 kΩ. |
| 2.7 V minimum supply | Operates directly from single-cell Li-ion (3.0–4.2 V) or two-cell alkaline (2.4–3.2 V) batteries - extends runtime in portable instrumentation. |
| SOT-23-5 layout optimization | GND (Pin 2) isolates IN+ and IN−; OUT (Pin 4) and IN− (Pin 3) alignment simplifies feedback trace routing - reduces PCB area by 67% vs SOIC-8. |
Applications
| Low-Power Audio Preamplifier | Multiplexed Data-Acquisition Systems |
|---|---|
Use Scenario: Amplifying microphone or piezoelectric transducer signals in battery-powered voice recorders or IoT acoustic sensors. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op-amp providing 20–40 dB gain with <1 µA quiescent current per channel. Use Value: 1 pA input bias current prevents loading of high-Z transducers; 15 nV/√Hz noise maintains SNR >70 dB in 20 Hz–20 kHz band. | Use Scenario: Buffering and conditioning analog sensor outputs (temperature, pressure, gas) before multiplexing into a shared ADC channel. IC Role / Device Role / Timing Role: High-input-impedance unity-gain buffer isolating sensors from multiplexer on-resistance and ADC input capacitance. Use Value: Rail-to-rail output ensures full 0–3 V ADC input range utilization; 2 MHz GBW supports ≤100 kSPS sampling without settling error. |
| Optical Module Monitoring | Programmable Logic Controllers |
Use Scenario: Converting photodiode current to voltage and amplifying output in fiber-optic transceivers or laser driver feedback loops. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) stage with low input bias current minimizing dark-current-induced offset. Use Value: 1 pA input bias current reduces offset error to <1 µV in 1 MΩ TIA configurations - critical for sub-nA photocurrent detection. | Use Scenario: Signal conditioning of 4–20 mA loop receiver outputs or isolated analog inputs in industrial control cabinets. IC Role / Device Role / Timing Role: Precision buffer and level-shifter translating field sensor signals to PLC ADC input ranges (e.g., 0–10 V). Use Value: 3 mV max input offset ensures ≤0.03% full-scale error in 10 V measurement range; 2.7–10 V supply range matches PLC internal power rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2231IDBVR | Same electrical specs, but rated for –40°C to +85°C operating range; 3 mV max VIO over full temp range. | Required for industrial or automotive under-hood environments where ambient exceeds 70°C. | Select TLV2231IDBVR when extended temperature operation is mandatory; otherwise TLV2231CDBVRG4 suffices for commercial-grade equipment. |
| OPA333AIDBVR | Zero-drift architecture; 0.1 µV/°C VIO drift vs 0.5 µV/°C for TLV2231; 17 nV/√Hz noise; 1.8 V min supply. | Better DC precision in long-duration measurements (e.g., weigh scales), but higher cost and 1.7x quiescent current. | Choose OPA333AIDBVR only when µV-level offset stability over temperature/time outweighs power budget constraints. |
Compared with TLV2231IDBVR, the TLV2231CDBVRG4 trades extended temperature range for lower cost in commercial applications; versus OPA333AIDBVR, it offers 40% lower supply current and simpler biasing at the expense of zero-drift DC accuracy.
Availability
TLV2231CDBVRG4 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 SOT-23 footprint consistency.
Supply support for TLV2231CDBVRG4 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, designing and manufacturing analog ICs, embedded processors, and DLP technology for industrial, automotive, and consumer markets.
The TLV2231CDBVRG4 belongs to TI's LinCMOS™ precision op-amp family, engineered specifically for low-voltage, low-power signal conditioning in battery-operated and space-constrained systems where rail-to-rail output and femtoampere input bias are critical.
FAQ
What is the maximum operating temperature range for the TLV2231CDBVRG4?
The TLV2231CDBVRG4 is characterized for operation from 0°C to +70°C ambient temperature. This commercial-grade rating is defined in the Recommended Operating Conditions table (Section 6.3) and validated across all electrical parameters including input offset voltage, supply current, and open-loop gain. Exceeding +70°C may cause parametric shift beyond datasheet limits; for extended temperature applications, TI recommends the TLV2231IDBVR variant.
Does the TLV2231CDBVRG4 support true rail-to-rail input capability?
No, the TLV2231CDBVRG4 does not feature rail-to-rail input. Its common-mode input voltage range extends to the negative rail (VDD−) but stops 1.3 V below the positive rail (VDD+) - e.g., 0 V to 3.7 V at 5 V supply. This is explicitly specified in Section 6.3 as VIC = VDD− to (VDD+ − 1.3 V). For full rail-to-rail input, consider TI's TLV9001 or OPA320 families.
Can the TLV2231CDBVRG4 drive a 600 Ω load at 5 V supply while maintaining rail-to-rail output swing?
Yes, the TLV2231CDBVRG4 drives 600 Ω loads with rail-to-rail output swing at 5 V supply: VOH ≥ 4.6 V at IOH = −4 mA and VOL ≤ 160 mV at IOL = 1 mA (Section 6.6). This meets telecom interface requirements and enables direct connection to SAR ADC inputs without external level-shifting circuitry.
What is the typical supply current of the TLV2231CDBVRG4 at 3 V operation?
The typical supply current of the TLV2231CDBVRG4 at 3 V is 1.2 mA (1200 µA), with a maximum of 1.5 mA over the full 0°C–70°C temperature range (Section 6.4, IDD parameter). This value is measured with no load and VO = 1.5 V, confirming its suitability for micropower designs where total system current must remain below 10 mA.
Is the TLV2231CDBVRG4 unity-gain stable with capacitive loads?
Yes, the TLV2231CDBVRG4 is unity-gain stable with up to 100 pF capacitive load and 600 Ω series resistance, delivering 48° phase margin at 5 V (Section 6.7). For larger capacitive loads (e.g., >500 pF), TI recommends adding a 50 Ω isolation resistor (RISO) in series with the output, as documented in Section 7.1.1 - a technique that preserves DC accuracy while suppressing ringing.
TLV2231CDBVRG4 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
TLV2231CDBVRG4 FAQ
1.How can I place an order for TLV2231CDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2231CDBVRG4 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 TLV2231CDBVRG4 reliable?
The price and inventory of TLV2231CDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2231CDBVRG4 is usually 5 days.
3.What payment methods are accepted for TLV2231CDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2231CDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2231CDBVRG4?
TLV2231CDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2231CDBVRG4 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 TLV2231CDBVRG4?
For technical support, including TLV2231CDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2231CDBVRG4 requirements.
6.How does Aetrix verify that TLV2231CDBVRG4 is sourced from the original manufacturer or authorized distributors?
All TLV2231CDBVRG4 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 TLV2231CDBVRG4 meets industry standards.
7.What is the process for return or replacement of TLV2231CDBVRG4?
All TLV2231CDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLV2231CDBVRG4, 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 TLV2231CDBVRG4 part is unused and in its original packaging.
Return procedure for TLV2231CDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV2231CDBVRG4 Tags
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