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Texas Instruments OPA4314AQPWRQ1
- Part No.:
- OPA4314AQPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4314AQPWRQ1.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,990
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Product details
Overview
OPA4314AQPWRQ1 from Texas Instruments is a quad-channel, rail-to-rail input/output (RRIO), low-noise, low-power CMOS operational amplifier qualified for automotive applications. It delivers 3 MHz gain-bandwidth, 14 nV/√Hz input voltage noise at 1 kHz, 150 µA per channel quiescent current, and operates from 1.8 V to 5.5 V supply. It serves as a precision signal-conditioning amplifier in battery-powered ADAS sensor interfaces and body electronics.
For engineers reviewing the OPA4314AQPWRQ1 datasheet, OPA4314AQPWRQ1 pinout, OPA4314AQPWRQ1 application, or OPA4314AQPWRQ1 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification (–40°C to +125°C), 0.5 mV max input offset voltage, unity-gain stability with up to 300 pF capacitive load, and integrated RF/EMI rejection filter for robust operation in noisy automotive environments.
Technical Context
The OPA4314AQPWRQ1 implements a CMOS input stage with 0.2 pA typical input bias current, enabling high-impedance sensor interfacing. Its RRIO architecture supports full-swing signal acquisition across the entire 1.8 V to 5.5 V supply range, while the internal EMI filter suppresses RF interference without external components.
It features no phase reversal under overdrive, 65° phase margin at unity gain, and stable operation into 10 kΩ loads with ≤300 pF capacitance. The device maintains 75–96 dB common-mode rejection ratio (CMRR) and 78–92 dB power-supply rejection ratio (PSRR) across temperature and supply voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 3 MHz - enables stable closed-loop operation up to ~200 kHz at G = 10, suitable for medium-speed sensor signal conditioning. |
| Input Voltage Noise | 14 nV/√Hz at 1 kHz - ensures minimal added noise in precision analog front-ends for current sensing and battery monitoring. |
| Quiescent Current | 150 µA per channel - allows four independent amplifiers to operate continuously on ultra-low-power automotive subsystems. |
| Input Offset Voltage | 0.5 mV max - reduces DC error in single-supply, rail-to-rail configurations used in 12 V battery monitoring circuits. |
| Supply Range | 1.8 V to 5.5 V - supports direct interface with 3.3 V microcontrollers and compatibility with wide-input automotive power rails. |
| Operating Temperature | –40°C to +125°C ambient - meets extended-range requirements for engine bay and ADAS camera module placements. |
| ESD Rating | HBM ±2000 V, CDM ±1000 V - provides robust handling during automated assembly and field-level electrostatic events. |
Pinout & Package
The OPA4314AQPWRQ1 is housed in a 14-pin TSSOP (PW) package measuring 5.00 mm × 4.40 mm, optimized for space-constrained automotive PCB layouts and compatible with standard surface-mount reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply | Accepts 1.8 V to 5.5 V; decoupling capacitor required near pin for PSRR optimization. |
| V− | Negative supply / ground | Reference node for single-supply operation; must be low-impedance to minimize common-mode error. |
| OUT A, OUT B, OUT C, OUT D | Amplifier outputs | Rail-to-rail swing within 15–40 mV of rails depending on load; each drives independent signal path. |
| +IN A/B/C/D | Noninverting inputs | High-impedance CMOS nodes (0.2 pA bias); support megaohm source impedances in thermistor or potentiometer interfaces. |
| −IN A/B/C/D | Inverting inputs | Matched to +IN pins; enable precision differential, transimpedance, or active filter topologies per channel. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM Class 2 and CDM Class C6 ESD robustness. |
| Rail-to-rail input and output | Enables full dynamic range utilization in 1.8 V–5.5 V single-supply systems without level-shifting circuitry. |
| Integrated RF/EMI filter | Rejects cellular, AM/FM, and radar band interference without external RC networks-critical for ADAS modules. |
| Unity-gain stable with 300 pF load | Eliminates need for isolation resistors when driving ADC input capacitors or long traces in distributed sensors. |
| No phase reversal on overdrive | Prevents latch-up or erroneous control signals during transient overload conditions in safety-critical feedback loops. |
Applications
| ADAS Sensor Signal Conditioning | Automotive Battery Monitoring |
|---|---|
Use Scenario: Amplifying low-level differential signals from radar or camera module temperature sensors and accelerometers. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with low drift and noise before ADC sampling. Use Value: 0.5 mV offset and 14 nV/√Hz noise preserve signal integrity in sub-mV sensor outputs, improving thermal accuracy by ≥0.3°C. |
Use Scenario: Measuring cell voltage and shunt-based current in 12 V/48 V hybrid vehicle battery management systems. IC Role / Device Role / Timing Role: High-impedance buffer and differential amplifier for isolated voltage/current sensing. Use Value: 0.2 pA input bias current prevents measurement error in megaohm-divider networks, maintaining ±1 mV voltage accuracy. |
| Body Electronics Lighting Control | Automotive HVAC Sensor Interface |
Use Scenario: Closed-loop dimming control of LED headlamps using photodiode feedback and PWM drivers. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photodiode current to voltage for microcontroller ADC. Use Value: Unity-gain stability with 300 pF load accommodates photodiode junction capacitance and PCB trace parasitics without oscillation. |
Use Scenario: Linearizing and amplifying outputs from NTC thermistors and humidity sensors in climate control modules. IC Role / Device Role / Timing Role: Rail-to-rail input amplifier operating from 3.3 V MCU supply to maximize ADC resolution. Use Value: 1.8 V minimum supply allows direct use with low-voltage LDOs, reducing system power by >15% versus 5 V op-amps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV334QDRQ1 | Lower GBW (1 MHz), higher IQ (220 µA/ch), no integrated EMI filter. | Suitable for cost-sensitive, lower-bandwidth body control modules where RF immunity is less critical. | Select when budget constraints outweigh need for 3 MHz bandwidth or EMI filtering in non-ADAS zones. |
| TSV914IQDT | Higher offset (1.3 mV max), wider supply (2.7–5.5 V), no AEC-Q100 Grade 1 rating. | Applicable in infotainment or telematics subsystems not requiring full automotive temperature grade. | Choose only for non-safety-critical interior modules where extended temperature validation is unnecessary. |
Compared with LMV334QDRQ1 and TSV914IQDT, the OPA4314AQPWRQ1 uniquely combines AEC-Q100 Grade 1 qualification, 3 MHz bandwidth, and integrated EMI filtering-making it the only option qualified for front-end signal conditioning in radar, camera, and battery monitoring systems demanding simultaneous precision, speed, and noise immunity.
Availability
OPA4314AQPWRQ1 is available at Aetrix Electronics and suitable for automotive ADAS sensor interfaces, battery monitoring systems, and body electronics lighting control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA4314AQPWRQ1 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 deep expertise in automotive-grade IC design and manufacturing.
The OPAx314-Q1 product line was engineered specifically for automotive signal conditioning-balancing ultra-low power, precision performance, and robustness in harsh electrical and thermal environments.
FAQ
What automotive qualification does the OPA4314AQPWRQ1 meet?
The OPA4314AQPWRQ1 is AEC-Q100 qualified with Grade 1 temperature rating (–40°C to +125°C ambient), HBM Class 2 (±2000 V), and CDM Class C6 (±1000 V). This certification validates its reliability for under-hood and ADAS applications. All electrical parameters in the datasheet are specified across this full temperature range, and the OPA4314AQPWRQ1 undergoes automotive-specific stress testing including thermal cycling and mechanical shock.
Does the OPA4314AQPWRQ1 support single-supply operation?
Yes, the OPA4314AQPWRQ1 fully supports single-supply operation from 1.8 V to 5.5 V. Its rail-to-rail input and output stages allow common-mode voltage range from (V−) − 0.2 V to (V+) + 0.2 V and output swing within 15–40 mV of both rails, enabling direct interfacing with 3.3 V microcontrollers and ADCs without level-shifting circuitry. The V− pin serves as ground reference in single-supply configurations.
What is the maximum capacitive load the OPA4314AQPWRQ1 can drive stably?
The OPA4314AQPWRQ1 is unity-gain stable with capacitive loads up to 300 pF, as verified in the datasheet's Typical Characteristics (Figure 20). This capability eliminates the need for series isolation resistors when driving ADC input capacitors, long PCB traces, or sensor cables-reducing component count and board area in automotive sensor nodes. Stability is maintained across the full –40°C to +125°C temperature range.
How does the integrated EMI filter in the OPA4314AQPWRQ1 improve system robustness?
The OPA4314AQPWRQ1 incorporates an internal RF and EMI rejection filter that attenuates interference in the 100 MHz–2 GHz range-including cellular, Bluetooth, Wi-Fi, and automotive radar bands-without requiring external RC networks. This feature significantly improves immunity in ADAS camera modules and radar signal chains, where conducted and radiated noise could otherwise corrupt low-level analog signals before digitization.
Can the OPA4314AQPWRQ1 replace older quad op-amps like the LM2902QDRQ1 in automotive designs?
The OPA4314AQPWRQ1 is not a pin-compatible drop-in replacement for the LM2902QDRQ1 due to different pin assignments and supply voltage ranges (LM2902 operates down to 3 V, OPA4314AQPWRQ1 down to 1.8 V). However, it offers superior performance: 3 MHz vs. 1.2 MHz GBW, 14 nV/√Hz vs. 40 nV/√Hz noise, and integrated EMI filtering. Migration requires PCB layout revision but delivers measurable improvements in signal fidelity and noise immunity for next-generation automotive ECUs.
OPA4314AQPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- 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:
- 14-TSSOP
OPA4314AQPWRQ1 FAQ
1.How can I place an order for OPA4314AQPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4314AQPWRQ1 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 OPA4314AQPWRQ1 reliable?
The price and inventory of OPA4314AQPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4314AQPWRQ1 is usually 5 days.
3.What payment methods are accepted for OPA4314AQPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4314AQPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4314AQPWRQ1?
OPA4314AQPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4314AQPWRQ1 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 OPA4314AQPWRQ1?
For technical support, including OPA4314AQPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4314AQPWRQ1 requirements.
6.How does Aetrix verify that OPA4314AQPWRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA4314AQPWRQ1 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 OPA4314AQPWRQ1 meets industry standards.
7.What is the process for return or replacement of OPA4314AQPWRQ1?
All OPA4314AQPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4314AQPWRQ1, 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 OPA4314AQPWRQ1 part is unused and in its original packaging.
Return procedure for OPA4314AQPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4314AQPWRQ1 Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
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LM358ADR
Texas Instruments
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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