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Texas Instruments OPA314AQDBVRQ1
- Part No.:
- OPA314AQDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA314AQDBVRQ1.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,634
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Product details
Overview
OPA314AQDBVRQ1 from Texas Instruments is a single-channel, AEC-Q100 Grade 1 qualified automotive operational amplifier with rail-to-rail input/output, 3 MHz gain-bandwidth, 14 nV/√Hz input voltage noise at 1 kHz, and 150 µA quiescent current per channel. It operates from 1.8 V to 5.5 V and supports precision signal conditioning in battery-monitoring and ADAS sensor interfaces.
For engineers reviewing the OPA314AQDBVRQ1 datasheet, OPA314AQDBVRQ1 pinout, OPA314AQDBVRQ1 application, or OPA314AQDBVRQ1 equivalent, this page delivers verified electrical specs, thermal metrics, automotive-grade reliability data, and real-world implementation context for low-voltage, low-noise analog front-ends.
Technical Context
The OPA314AQDBVRQ1 employs a CMOS input stage enabling 0.2 pA typical input bias current and rail-to-rail common-mode input range (V– – 0.2 V to V+ + 0.2 V), supporting high-impedance sensor interfacing. Its unity-gain stable architecture drives capacitive loads up to 300 pF without oscillation.
Integrated RF/EMI filtering suppresses interference from cellular, AM/FM, and digital switching noise-critical for automotive environments. The device maintains 75–96 dB CMRR and 78–92 dB PSRR across its full 1.8 V–5.5 V supply range and –40°C to +125°C operating temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 3 MHz at 5 V supply - enables stable closed-loop operation up to ~200 kHz with G = 10, suitable for sensor amplification and active filtering. |
| Input Voltage Noise | 14 nV/√Hz at 1 kHz - ensures minimal added noise in microvolt-level signal chains like current-sense shunt amplifiers. |
| Quiescent Current | 150 µA per channel at 5 V - allows continuous operation in always-on automotive modules without compromising battery life. |
| Input Offset Voltage | 0.5 mV max (2.5 mV typical) - supports <1% error in 500-mV full-scale measurements without trimming. |
| Supply Voltage Range | 1.8 V to 5.5 V - compatible with 2-cell Li-ion, 3.3 V MCU domains, and legacy 5 V systems in body electronics. |
| Operating Temperature | –40°C to +125°C ambient - meets AEC-Q100 Grade 1 requirements for under-hood and cabin-mounted ECUs. |
| Output Swing | Within 15 mV of rails (RL = 10 kΩ, VS = 1.8 V) - maximizes dynamic range in low-voltage ADC interfaces. |
Pinout & Package
SOT-23 (DBV) package, 2.90 mm × 1.60 mm body size, 5-pin surface-mount configuration optimized for space-constrained automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Amplifier output | Delivers rail-to-rail voltage swing; capable of sourcing/sinking ±20 mA short-circuit current. |
| V– (Pin 2) | Negative supply / ground reference | Connects to system ground in single-supply configurations; supports true 0-V input common-mode range. |
| +IN (Pin 3) | Noninverting input | High-impedance CMOS node (0.2 pA bias); accepts signals from 0.2 V below V– to 0.2 V above V+. |
| –IN (Pin 4) | Inverting input | Matches +IN in impedance and voltage range; enables precision differential, transimpedance, and gain-setting topologies. |
| V+ (Pin 5) | Positive supply | Accepts 1.8–5.5 V; internal ESD protection (±2-kV HBM) safeguards against assembly and system-level transients. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full utilization of 1.8-V supply headroom in battery-monitoring circuits, preserving >98% of ADC input range. |
| Integrated EMI filter | Reduces susceptibility to 400–2000 MHz RF interference-validated by EMIRR curve showing >80 dB rejection at 900 MHz. |
| No phase reversal | Prevents latch-up or uncontrolled output during input overdrive (e.g., load-dump or jump-start events), enhancing system safety. |
| AEC-Q100 qualification | Grade 1 (–40°C to +125°C), HBM Class 2 (±2 kV), CDM Class C6 (±1 kV)-certified for powertrain-adjacent and ADAS applications. |
| Unity-gain stability | Operates robustly with 300-pF capacitive loads-eliminates need for external compensation in motor driver feedback or long-cable sensor links. |
Applications
| ADAS Camera Power Monitoring | EV Battery Cell Voltage Sensing |
|---|---|
|
Use Scenario: Real-time monitoring of 12-V camera module supply rail for brown-out detection and fault logging. IC Role / Device Role / Timing Role: Precision buffer and level-shifter between isolated sense resistor and 3.3-V SAR ADC. Use Value: 0.5-mV offset and 14-nV/√Hz noise ensure <0.1% measurement accuracy across temperature, meeting ASIL-B diagnostic coverage. |
Use Scenario: High-side voltage sensing of individual 3.7-V Li-ion cells in 96-cell EV battery packs. IC Role / Device Role / Timing Role: Low-power, high-Z differential amplifier driving isolated sigma-delta modulator inputs. Use Value: 0.2-pA input bias prevents leakage-induced error in megaohm-divider networks, maintaining ±1-mV cell voltage resolution. |
| Automotive Body Control Unit (BCU) | LED Headlamp Current Regulation |
|
Use Scenario: Signal conditioning for HVAC temperature sensors and door-lock position switches in centralized BCU modules. IC Role / Device Role / Timing Role: General-purpose op amp for active filtering, gain staging, and comparator hysteresis generation. Use Value: 150-µA quiescent current enables always-on sensor wake-up capability while staying within 100-µA system sleep budget. |
Use Scenario: Closed-loop current control of adaptive LED headlamps using shunt-based feedback. IC Role / Device Role / Timing Role: Transimpedance amplifier converting shunt voltage to precise control voltage for LED driver IC. Use Value: Rail-to-rail output swing ensures full 0–3.3-V control range at 1.8-V supply, enabling dimming down to 0.1% intensity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV314QDBVRQ1 | Lower GBW (1 MHz), higher IQ (220 µA), no integrated EMI filter | Acceptable for non-EMI-critical body electronics; insufficient for radar/camera power monitoring | Choose when cost sensitivity outweighs noise/EMI performance and bandwidth needs are ≤100 kHz. |
| TSV911AQDBVRQ1 | Higher offset (1.5 mV max), lower noise (23 nV/√Hz), same AEC-Q100 Grade 1 rating | Valid for less demanding sensor interfaces but degrades accuracy in <10-mV signal paths | Prefer only if supply voltage must extend to 24 V (TSV911 supports up to 36 V) and noise is secondary to voltage range. |
Compared with LMV314QDBVRQ1 and TSV911AQDBVRQ1, the OPA314AQDBVRQ1 uniquely balances 3-MHz bandwidth, 14-nV/√Hz noise, and production-proven EMI immunity-making it the optimal choice for safety-relevant, low-voltage, high-fidelity automotive analog signal chains where all three attributes are simultaneously required.
Availability
OPA314AQDBVRQ1 is available at Aetrix Electronics and suitable for automotive ADAS subsystems, battery management systems, and body electronics requiring stable component supply across extended temperature and lifecycle demands.
Supply support for OPA314AQDBVRQ1 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 and embedded processing technologies, with decades of automotive qualification expertise and broad AEC-Q100 product coverage.
The OPAx314-Q1 family was designed specifically for cost-sensitive, low-power automotive signal-conditioning applications-emphasizing rail-to-rail operation, EMI resilience, and extended temperature reliability without sacrificing precision.
FAQ
What automotive qualification level does the OPA314AQDBVRQ1 meet?
The OPA314AQDBVRQ1 is AEC-Q100 qualified as Grade 1, with ambient operating temperature range of –40°C to +125°C, HBM ESD rating of ±2000 V, and CDM rating of ±1000 V. These specifications are fully documented in TI's SLOS896B datasheet and validated per JEDEC standards-ensuring suitability for engine bay, chassis, and ADAS applications where thermal and electrical stress are severe.
Does the OPA314AQDBVRQ1 require external compensation for stability?
No, the OPA314AQDBVRQ1 is unity-gain stable and drives capacitive loads up to 300 pF without external compensation. This is confirmed in the datasheet's "Detailed Description" section and validated by small-signal step response testing (Figure 21–24). Designers can directly interface it with ADC input capacitors, long traces, or cable-driven loads without risk of peaking or oscillation.
Can the OPA314AQDBVRQ1 operate from a 1.8-V single supply?
Yes, the OPA314AQDBVRQ1 is fully specified from 1.8 V to 5.5 V. At 1.8 V, it delivers rail-to-rail input (V– – 0.2 V to V+ + 0.2 V) and output swing within 15 mV of each rail (RL = 10 kΩ), with 130 µA typical quiescent current. This makes it ideal for ultra-low-voltage domains such as 2-cell Li-ion battery monitors and energy-harvesting subsystems.
How does the integrated EMI filter in the OPA314AQDBVRQ1 improve system robustness?
The OPA314AQDBVRQ1 includes an on-chip RF/EMI rejection filter that attenuates interference in the 400–2000 MHz band-critical for automotive environments exposed to cellular, keyless entry, and infotainment emissions. The EMIRR curve (Figure 32) shows >80 dB rejection at 900 MHz, preventing erroneous ADC readings or false fault triggers in sensitive sensor amplifiers like those used in camera power supervision.
What is the maximum capacitive load the OPA314AQDBVRQ1 can drive while maintaining phase margin?
The OPA314AQDBVRQ1 maintains ≥65° phase margin driving up to 300 pF capacitive load with 10-kΩ series resistance (per datasheet Figure 20 and "Detailed Description" section). This eliminates need for isolation resistors in most PCB layouts and supports direct connection to SAR ADC inputs, anti-aliasing filters, and long-flex cable interfaces without stability concerns.
OPA314AQDBVRQ1 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
OPA314AQDBVRQ1 FAQ
1.How can I place an order for OPA314AQDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA314AQDBVRQ1 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 OPA314AQDBVRQ1 reliable?
The price and inventory of OPA314AQDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA314AQDBVRQ1 is usually 5 days.
3.What payment methods are accepted for OPA314AQDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA314AQDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA314AQDBVRQ1?
OPA314AQDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA314AQDBVRQ1 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 OPA314AQDBVRQ1?
For technical support, including OPA314AQDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA314AQDBVRQ1 requirements.
6.How does Aetrix verify that OPA314AQDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA314AQDBVRQ1 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 OPA314AQDBVRQ1 meets industry standards.
7.What is the process for return or replacement of OPA314AQDBVRQ1?
All OPA314AQDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA314AQDBVRQ1, 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 OPA314AQDBVRQ1 part is unused and in its original packaging.
Return procedure for OPA314AQDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA314AQDBVRQ1 Tags
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