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Texas Instruments OPA2314AQDRQ1
- Part No.:
- OPA2314AQDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2314AQDRQ1.pdf
- Description:
- OPA2314-Q1 - AUTOMOTIVE 1.8V, 3M
- Quantity:
- Payment:
- Shipping:
Inventory:380
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Product details
Overview
OPA2314AQDRQ1 from Texas Instruments is a dual-channel, AEC-Q100 Grade 1 qualified CMOS operational amplifier optimized 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 rail-to-rail input/output swing across 1.8 V to 5.5 V supply. It serves as a precision signal-conditioning amplifier in battery monitoring and ADAS sensor interfaces.
For engineers reviewing the OPA2314AQDRQ1 datasheet, OPA2314AQDRQ1 pinout, OPA2314AQDRQ1 application, or OPA2314AQDRQ1 equivalent, this page provides verified technical context, package-specific pin functions, automotive-grade performance parameters, and validated alternative options for low-power, low-noise analog signal chains in harsh-temperature environments.
Technical Context
The OPA2314AQDRQ1 implements a CMOS input stage with 0.2 pA typical input bias current, enabling high-impedance sensor interfacing without significant error. Its unity-gain stable architecture supports capacitive loads up to 300 pF and features integrated RF/EMI rejection filtering-critical for automotive EMI immunity compliance.
It operates across –40°C to +125°C ambient temperature with guaranteed 0.5 mV max input offset voltage and 75–96 dB common-mode rejection ratio (CMRR) over full voltage and temperature range. The device uses separate positive (V+) and negative (V–) supply terminals, supporting single-supply operation with V– tied to ground.
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 sensor amplification and active filtering. |
| Input Voltage Noise | 14 nV/√Hz at 1 kHz - ensures minimal added noise in precision DC-coupled measurement paths like current sensing. |
| Quiescent Current | 150 µA per channel - allows continuous operation in always-on automotive subsystems with strict power budgets. |
| Input Offset Voltage | 0.5 mV max - reduces DC error in unidirectional current-sense amplifiers and battery cell voltage monitoring. |
| Supply Range | 1.8 V to 5.5 V - supports direct interface with 2.5 V, 3.3 V, and 5 V microcontrollers and ADCs in body electronics modules. |
| Operating Temperature | –40°C to +125°C - meets AEC-Q100 Grade 1 requirements for under-hood and cabin-mounted ECUs. |
| CMRR | 75–96 dB - maintains accuracy in noisy automotive power domains where common-mode transients exceed 1 V. |
Pinout & Package
OPA2314AQDRQ1 is packaged in an 8-pin VSSOP (DGK) with 4.90 mm × 3.91 mm body size and exposed pad not connected internally. Pin spacing is 0.65 mm pitch; recommended solder profile complies with JEDEC J-STD-020 moisture sensitivity level 2a.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT A | Output, Channel A | Amplified output of first op amp; rail-to-rail swing supports full-scale ADC input without level-shifting. |
| –IN A | Inverting Input, Channel A | High-impedance node (0.2 pA bias) for feedback networks and precision inverting configurations. |
| +IN A | Noninverting Input, Channel A | Accepts sensor signals directly; rail-to-rail common-mode range (V– – 0.2 V to V+ + 0.2 V) enables single-supply use. |
| V– | Negative Supply / Ground | Reference terminal for single-supply operation; must be decoupled locally to minimize PSRR degradation. |
| –IN B | Inverting Input, Channel B | Dedicated input for second independent amplifier; electrically isolated from Channel A except via shared supplies. |
| +IN B | Noninverting Input, Channel B | Supports dual-sensor conditioning (e.g., differential pair or redundant sensing) with matched DC specs. |
| OUT B | Output, Channel B | Independent output with same drive capability (±20 mA short-circuit) and noise performance as OUT A. |
| V+ | Positive Supply | Primary power rail; 1.8–5.5 V range allows compatibility with LDO outputs and battery-fed domains. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization with 1.8 V supplies-critical for low-voltage battery monitoring systems. |
| Integrated EMI Filter | Reduces susceptibility to GSM, LTE, and AM/FM band interference without external RC filters, saving board space. |
| No Phase Reversal | Prevents catastrophic output inversion during input overdrive-essential for safety-critical ADAS front-end circuits. |
| AEC-Q100 Qualified | Validated for automotive Grade 1 (–40°C to +125°C), HBM ±2 kV, CDM ±1 kV-ensures reliability in production vehicles. |
| Unity-Gain Stable | Eliminates need for external compensation in buffer, gain-of-1, or active filter designs-reduces BOM count and layout risk. |
Applications
| ADAS Sensor Signal Conditioning | Automotive Battery Cell Monitoring |
|---|---|
|
Use Scenario: Amplifying low-level analog outputs from radar MMICs or camera ISP analog front-ends in driver-assistance modules. IC Role / Device Role / Timing Role: Dual-channel precision op amp providing gain, filtering, and drive for 12-bit+ SAR ADCs with <1 LSB error. Use Value: 14 nV/√Hz noise and 3 MHz bandwidth preserve signal integrity while 150 µA/ch minimizes thermal load in compact ECUs. |
Use Scenario: Measuring individual Li-ion cell voltages (0–4.2 V) in 12S battery packs for EVs and HEVs. IC Role / Device Role / Timing Role: High-input-impedance buffer and level-shifter for multiplexed cell voltage acquisition. Use Value: 0.2 pA input bias current prevents voltage droop across megaohm sense resistors; rail-to-rail output drives ADC reference rails directly. |
| Body Electronics Current Sensing | LED Driver Feedback Control |
|
Use Scenario: Shunt-based current measurement in seat motor control, HVAC blower, or lighting modules. IC Role / Device Role / Timing Role: Low-offset, low-noise amplifier converting mV-level shunt voltage to 0–3.3 V ADC input range. Use Value: 0.5 mV max VOS ensures <0.1% full-scale error at 500 mV shunt drop; 1.5 V/µs slew rate handles PWM switching transients. |
Use Scenario: Closed-loop feedback for constant-current LED drivers in adaptive headlights or interior lighting. IC Role / Device Role / Timing Role: Error amplifier comparing LED current sense voltage against reference in current-regulation loop. Use Value: Unity-gain stability and 3 MHz GBW enable fast response to dimming commands; EMI filtering suppresses switching noise from buck controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM7322QDRQ1 | Higher quiescent current (1.3 mA/ch), wider supply (2.7–36 V), higher GBW (20 MHz), no integrated EMI filter. | Better suited for high-speed, high-voltage industrial motor control-not optimized for ultra-low-power automotive always-on nodes. | Select when >10 MHz bandwidth or >12 V supply is required; avoid if sub-200 µA/ch power budget is mandatory. |
| TSV912IQDRQ1 | Lower quiescent current (80 µA/ch), lower GBW (8 MHz), no AEC-Q100 Grade 1 rating (only Grade 0), no EMI filter. | Targeted at cost-sensitive infotainment peripherals-not qualified for engine bay or safety-critical ADAS domains. | Consider only for non-safety cabin applications where ambient temperature stays below 105°C and EMI immunity is less critical. |
Compared with LM7322QDRQ1 and TSV912IQDRQ1, the OPA2314AQDRQ1 uniquely balances automotive qualification, ultra-low IQ, integrated EMI protection, and precision DC specs-making it the optimal choice for battery-constrained, safety-relevant signal chains where noise, offset, and temperature stability are non-negotiable.
Availability
OPA2314AQDRQ1 is available at Aetrix Electronics and suitable for automotive ADAS modules, battery management systems, and body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2314AQDRQ1 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 family was engineered specifically for automotive signal conditioning-delivering low-noise, low-power, and robust EMI performance in AEC-Q100-compliant packages for safety-critical and always-on vehicle subsystems.
FAQ
What is the maximum operating junction temperature for OPA2314AQDRQ1?
The OPA2314AQDRQ1 has a maximum junction temperature of 150°C, with absolute maximum ratings specifying 150°C for both operating and storage conditions. Its thermal resistance (RθJA) is 138.4°C/W in the VSSOP-8 package, meaning at 150 µA/ch and 5.5 V supply, self-heating remains well within limits even at +125°C ambient-enabling reliable deployment in under-hood ECUs.
Does OPA2314AQDRQ1 support single-supply operation?
Yes, OPA2314AQDRQ1 fully supports single-supply operation: its rail-to-rail input extends to V– – 0.2 V and V+ + 0.2 V, and rail-to-rail output swings within 5 mV of each rail at light loads. With V– grounded and V+ = 3.3 V, the device accurately amplifies 0–3.3 V sensor signals-ideal for interfacing with automotive microcontrollers and ADCs.
Is OPA2314AQDRQ1 pin-compatible with other devices in the OPAx314-Q1 family?
No-OPA2314AQDRQ1 (VSSOP-8) is not pin-compatible with OPA314AQDBVRQ1 (SOT-23-5) or OPA4314QPWRQ1 (TSSOP-14). Each variant uses a distinct pinout optimized for channel count and package constraints. For example, VSSOP-8 places both outputs on opposite ends (Pins 1 and 7), whereas SOT-23-5 has only one output (Pin 1); PCB redesign is required for substitution.
What is the ESD robustness of OPA2314AQDRQ1?
OPA2314AQDRQ1 is rated per AEC-Q100: Human Body Model (HBM) ±2000 V and Charged Device Model (CDM) ±1000 V. These levels exceed standard industrial requirements and ensure resilience during automotive assembly, handling, and field operation-particularly important in dry-climate regions where static discharge risks are elevated.
Can OPA2314AQDRQ1 drive capacitive loads without oscillation?
Yes-OPA2314AQDRQ1 is unity-gain stable and characterized to drive up to 300 pF capacitive loads without phase margin degradation or ringing. This eliminates the need for isolation resistors in ADC input buffering or cable-driven applications, preserving signal fidelity while simplifying layout and reducing component count in automotive sensor nodes.
OPA2314AQDRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.5V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 150µA (x2 Channels)
- 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:
- 8-SOIC
OPA2314AQDRQ1 FAQ
1.How can I place an order for OPA2314AQDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2314AQDRQ1 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 OPA2314AQDRQ1 reliable?
The price and inventory of OPA2314AQDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2314AQDRQ1 is usually 5 days.
3.What payment methods are accepted for OPA2314AQDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2314AQDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2314AQDRQ1?
OPA2314AQDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2314AQDRQ1 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 OPA2314AQDRQ1?
For technical support, including OPA2314AQDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2314AQDRQ1 requirements.
6.How does Aetrix verify that OPA2314AQDRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA2314AQDRQ1 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 OPA2314AQDRQ1 meets industry standards.
7.What is the process for return or replacement of OPA2314AQDRQ1?
All OPA2314AQDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2314AQDRQ1, 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 OPA2314AQDRQ1 part is unused and in its original packaging.
Return procedure for OPA2314AQDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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