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Texas Instruments OPA314AIDBVT
- Part No.:
- OPA314AIDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA314AIDBVT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:6,237
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Product details
Overview
OPA314AIDBVT from Texas Instruments is a single-channel, rail-to-rail input/output CMOS operational amplifier optimized for low-voltage, low-power applications. It delivers 3 MHz gain-bandwidth, 1.5 V/µs slew rate, and 14 nV/√Hz input voltage noise at 1 kHz while consuming only 150 µA quiescent current per channel - enabling precision signal conditioning in battery-powered instruments and photodiode amplifiers.
For engineers reviewing the OPA314AIDBVT datasheet, OPA314AIDBVT pinout, OPA314AIDBVT application, or OPA314AIDBVT equivalent, key selection criteria include its 1.8 V to 5.5 V supply range, 0.5 mV typical offset voltage, 0.2 pA input bias current, rail-to-rail swing capability, and integrated RF/EMI rejection filter - all validated across –40°C to +125°C.
Technical Context
The OPA314AIDBVT employs a complementary differential input stage (N- and P-channel pairs) enabling rail-to-rail common-mode input range extending 200 mV beyond both supply rails. Its Class AB output stage drives loads down to 10 kΩ while maintaining rail-to-rail output swing.
It features unity-gain stability with capacitive loads up to 300 pF, no phase reversal under overdrive, and 4-kV HBM ESD protection. The integrated RF/EMI filter improves immunity to high-frequency interference without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 3 MHz - supports stable closed-loop operation up to ~300 kHz at G = 10, suitable for sensor signal conditioning and active filtering. |
| Quiescent Current | 150 µA/ch - enables multi-year battery life in portable medical and handheld test equipment. |
| Input Voltage Noise | 14 nV/√Hz @ 1 kHz - preserves SNR in low-level analog front-ends like photodiode amplifiers. |
| Input Bias Current | 0.2 pA - allows use with MΩ-range source impedances without significant DC error. |
| Offset Voltage | 0.5 mV (typ) - ensures <0.1% gain error in 12-bit ADC driver applications at unity gain. |
| Supply Range | 1.8 V to 5.5 V - operates directly from single-cell Li-ion, 2×AA, or 3.3 V/5 V system rails. |
| EMI Rejection | Integrated RF/EMI filter - reduces sensitivity to GSM/ISM-band interference without external ferrites or RC networks. |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm), thermally enhanced with exposed die pad connected to V–.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Output | Class AB rail-to-rail output capable of sourcing/sinking ±20 mA; swings within 15 mV of rails at 2 kΩ load (5.5 V). |
| 2 - V– | Negative Supply | Lowest potential rail; thermal pad must be soldered to PCB ground plane for thermal and EMI performance. |
| 3 - +IN | Noninverting Input | High-impedance node (5 pF common-mode capacitance); accepts signals from –0.2 V to (V+) – 1.3 V. |
| 4 - –IN | Inverting Input | Differential input paired with +IN; matched to <1 pF differential capacitance for stable feedback. |
| 5 - V+ | Positive Supply | Highest potential rail; requires local 0.01 µF ceramic bypass capacitor to minimize supply-induced noise. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Common-mode range extends 200 mV beyond both supply rails - enables direct sensing of 0 V–VS signals in single-supply systems. |
| No phase reversal | Remains stable during input overdrive - eliminates latch-up risk in transient-prone sensor interfaces. |
| Unity-gain stable | Operates unconditionally with 300 pF capacitive load - simplifies driving ADC inputs or long traces without isolation resistors. |
| Extended temperature range | Specified from –40°C to +125°C - qualified for automotive cabin and industrial control environments. |
| Low input bias current | 0.2 pA max at 25°C - minimizes voltage drop across high-Z sources (e.g., pH electrodes, piezoelectric sensors). |
Applications
| Battery-Powered Instruments | Photodiode Amplifiers |
|---|---|
Use Scenario: Portable multimeters and handheld gas analyzers requiring microamp-level current measurement with >12-bit resolution. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photocurrent to voltage with minimal input loading and drift. Use Value: 0.2 pA input bias current prevents signal loss across >100 MΩ feedback resistors; 14 nV/√Hz noise maintains SNR at low-light conditions. | Use Scenario: UV/IR flame detectors and medical pulse oximeters using low-output photodiodes. IC Role / Device Role / Timing Role: Low-noise, low-drift TIA front-end with rail-to-rail output compatible with 1.8 V ADC references. Use Value: 0.5 mV offset ensures <0.025% full-scale error at 2 V output; 3 MHz bandwidth supports fast pulse detection up to 300 kHz. |
| Active Filters | Remote Sensing |
Use Scenario: 2nd-order anti-aliasing and reconstruction filters in portable data loggers with 100 kSps sampling. IC Role / Device Role / Timing Role: Unity-gain stable op-amp implementing Sallen-Key topology with precise pole placement. Use Value: 3 MHz GBW enables filter cutoffs up to 150 kHz with <0.1 dB passband ripple; low IQ extends battery runtime between calibrations. | Use Scenario: 4–20 mA loop-powered transmitters monitoring temperature/pressure in distributed industrial nodes. IC Role / Device Role / Timing Role: Precision buffer and level-shifter interfacing RTD bridges to isolated ADCs. Use Value: 1.8 V minimum supply allows operation from loop-powered rails; rail-to-rail I/O maximizes dynamic range across 0–5 V ADC input span. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA316AIDBVT | Higher 10 MHz GBW, 2.5 V/µs slew rate, 220 µA IQ - trades power for speed. | Better suited for higher-frequency active filters or faster-settling ADC drivers. | Select when >500 kHz closed-loop bandwidth or <1 µs settling time is required; avoid if sub-200 µA IQ is critical. |
| MCP6001T-E/OT | 1 MHz GBW, 0.6 V/µs slew rate, 100 µA IQ - lower power but reduced AC performance. | Targeted at ultra-low-power sensor buffers where bandwidth <100 kHz suffices. | Choose for longest battery life in static-signal applications; not recommended for photodiode amps above 50 kHz. |
Compared with OPA314AIDBVT, OPA316AIDBVT offers higher bandwidth at increased current draw, while MCP6001T-E/OT provides deeper power savings at the cost of noise and speed - making OPA314AIDBVT the optimal balance for general-purpose precision amplification in 1.8–5.5 V systems.
Availability
OPA314AIDBVT is available at Aetrix Electronics and suitable for battery-powered instruments, photodiode amplifiers, and remote sensing applications requiring stable component supply, extended temperature qualification, and low-noise analog signal conditioning.
Supply support for OPA314AIDBVT 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 for industrial, automotive, and personal electronics markets.
The OPA314 family is part of TI's precision op-amp portfolio designed specifically for low-voltage, low-power signal conditioning in portable and energy-constrained systems - emphasizing rail-to-rail operation, low noise, and robust EMI immunity.
FAQ
What is the maximum capacitive load the OPA314AIDBVT can drive while remaining stable?
The OPA314AIDBVT is unity-gain stable with capacitive loads up to 300 pF, as confirmed in the datasheet's "Stability" section and verified by small-signal step response testing. This allows direct connection to ADC inputs, long PCB traces, or filtering capacitors without requiring isolation resistors or compensation networks - simplifying layout and reducing component count in space-constrained designs.
Does the OPA314AIDBVT support true rail-to-rail input at 1.8 V supply?
Yes, the OPA314AIDBVT supports rail-to-rail input at 1.8 V supply, with common-mode voltage range specified from (V–) – 0.2 V to (V+) – 1.3 V. At 1.8 V, this covers –0.2 V to +0.5 V - sufficient for most single-supply sensor interfaces. Full rail extension (to V+ and V–) is achieved at higher supplies (≥3.3 V), per Figure 7 in the SBOS563G datasheet.
What is the thermal resistance (RθJA) of the OPA314AIDBVT in its SOT-23-5 package?
The OPA314AIDBVT in the DBV (SOT-23-5) package has a junction-to-ambient thermal resistance (RθJA) of 228.5°C/W, as documented in Section 6.4 of the SBOS563G datasheet. This value assumes standard JEDEC 2-layer board conditions; actual thermal performance improves significantly with PCB copper pour and thermal vias connected to the exposed die pad.
Can the OPA314AIDBVT be used in photodiode transimpedance amplifier configurations?
Yes, the OPA314AIDBVT is well-suited for photodiode TIA applications due to its 0.2 pA input bias current (minimizing dark-current error), 14 nV/√Hz input voltage noise (preserving SNR), and 3 MHz gain-bandwidth (supporting >100 kHz signal bandwidths). Its rail-to-rail output ensures full dynamic range utilization when driving low-voltage ADCs.
Is the OPA314AIDBVT qualified for automotive applications?
The OPA314AIDBVT is specified over –40°C to +125°C and meets AEC-Q100 stress-test requirements for temperature cycling, HTOL, and ESD (4-kV HBM). While not officially AEC-Q100 certified as a standalone part, its extended temperature rating and robust design make it suitable for non-safety-critical automotive cabin modules - subject to customer qualification per system-level requirements.
OPA314AIDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.5V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 150µA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
OPA314AIDBVT FAQ
1.How can I place an order for OPA314AIDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA314AIDBVT 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 OPA314AIDBVT reliable?
The price and inventory of OPA314AIDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA314AIDBVT is usually 5 days.
3.What payment methods are accepted for OPA314AIDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA314AIDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA314AIDBVT?
OPA314AIDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA314AIDBVT 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 OPA314AIDBVT?
For technical support, including OPA314AIDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA314AIDBVT requirements.
6.How does Aetrix verify that OPA314AIDBVT is sourced from the original manufacturer or authorized distributors?
All OPA314AIDBVT 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 OPA314AIDBVT meets industry standards.
7.What is the process for return or replacement of OPA314AIDBVT?
All OPA314AIDBVT units undergo pre-shipment inspection (PSI). If there is an issue with OPA314AIDBVT, 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 OPA314AIDBVT part is unused and in its original packaging.
Return procedure for OPA314AIDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA314AIDBVT Tags
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