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Texas Instruments OPA365AQDBVRQ1
- Part No.:
- OPA365AQDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA365AQDBVRQ1.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,367
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Product details
Overview
OPA365AQDBVRQ1 from Texas Instruments is an automotive-grade, single-channel CMOS operational amplifier optimized for high-speed, low-distortion signal conditioning in rail-to-rail input/output, single-supply systems. It delivers 50 MHz gain bandwidth, 0.0004% THD+N at 1 kHz, 100 dB minimum CMRR, 25 V/µs slew rate, and operates from 2.2 V to 5.5 V - enabling precision analog front-ends in short-to-mid-range radar receivers and ADC driver stages.
For engineers reviewing the OPA365AQDBVRQ1 datasheet, OPA365AQDBVRQ1 pinout, OPA365AQDBVRQ1 application, or OPA365AQDBVRQ1 equivalent, key selection criteria include zero-crossover distortion topology for linear rail-to-rail operation, AEC-Q100 Grade 1 qualification (−40°C to 125°C), 4.5 nV/√Hz noise at 100 kHz, fast 0.3 µs settling to 0.01%, and SOT-23-5 package compatibility with space-constrained automotive sensor modules.
Technical Context
The OPA365AQDBVRQ1 implements a patented zero-crossover input stage that eliminates transition-region distortion across the full rail-to-rail common-mode range (extending 100 mV beyond both supply rails), ensuring consistent linearity when driving sampling ADCs like the ADS7822-Q1 or ADS1115-Q1. Its regulated charge-pump topology enables stable rail-to-rail output swing within 10 mV of each rail under 10 kΩ load.
This device operates as a unity-gain stable, voltage-feedback amplifier with 120 dB typical open-loop gain and 50 MHz gain-bandwidth product. It supports single-supply configurations (e.g., 3.3 V or 5 V) and dual-supply modes (±1.1 V to ±2.75 V), with input bias current as low as ±0.2 pA and offset voltage drift of only 1 µV/°C over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 50 MHz - enables accurate amplification of signals up to ~15 MHz in closed-loop G = +1 configuration. |
| THD+N | 0.0004% at 1 kHz - preserves signal fidelity in radar IF stages and audio preamplifiers without harmonic corruption. |
| CMRR | 100 dB min - rejects common-mode noise from engine control units or DC-DC converter switching artifacts. |
| Slew Rate | 25 V/µs - supports clean 4-V step response in ≤300 ns, critical for fast-settling peak detectors and pulse conditioning. |
| Input Voltage Range | VCM = (V−) − 0.1 V to (V+) + 0.1 V - allows direct interfacing to sensors biased beyond supply rails, e.g., electret microphones. |
| Output Swing | Within 10 mV of rails (RL = 10 kΩ, VS = 5.5 V) - maximizes dynamic range into single-supply ADCs with 0–VREF inputs. |
| Supply Range | 2.2 V to 5.5 V - compatible with automotive 3.3 V and 5 V domains, including HEV/EV battery monitoring subsystems. |
| Quiescent Current | 4.6–5.3 mA - balances speed and power in always-on ADAS sensor nodes requiring <10 mA per channel. |
Pinout & Package
The OPA365AQDBVRQ1 is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for thermal performance (RθJA = 208.8°C/W) and PCB area efficiency in compact automotive modules.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VOUT) | Amplifier output | Delivers rail-to-rail voltage swing; drives ADC inputs, active filters, or transimpedance stages with minimal headroom loss. |
| 2 (V−) | Negative supply terminal | Connects to ground or negative rail; supports true single-supply operation down to 2.2 V total supply range. |
| 3 (+IN) | Noninverting input | High-impedance (≥1013 Ω), low-bias (±0.2 pA) node for precision sensor interfaces and reference buffers. |
| 4 (−IN) | Inverting input | Accepts feedback networks; enables stable unity-gain buffer, inverting amplifier, or active filter configurations. |
| 5 (V+) | Positive supply terminal | Accepts 2.2–5.5 V; internal charge pump ensures rail-to-rail output even at lowest supply voltages. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-crossover distortion topology | Eliminates input-stage crossover nonlinearity across full rail-to-rail common-mode range, preserving THD+N performance in ADC driver applications. |
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient operation, HBM ESD Level H2 (±2 kV), CDM Level C3B (±750 V) - meets automotive electronics reliability requirements. |
| Rail-to-rail input and output | Input extends 100 mV beyond supply rails; output swings within 10 mV of rails - maximizes usable signal range in 3.3 V or 5 V systems. |
| Low-noise, high-speed architecture | 4.5 nV/√Hz input voltage noise at 100 kHz and 50 MHz GBW enable clean amplification of weak radar IF signals without SNR degradation. |
| Fast settling time | 0.3 µs to 0.01% for 4-V step - supports high-throughput sampling in multi-channel radar data acquisition systems. |
| Functional safety documentation support | TI provides failure mode analysis, FIT rate data, and diagnostic coverage guidance - aids ISO 26262 ASIL-B system-level safety certification. |
Applications
| Short-to-Mid-Range Radar Receiver | Engine Control Unit (ECU) Sensor Interface |
|---|---|
Use Scenario: Amplifying 24 GHz IF signals from automotive radar transceivers before digitization by the ADS7822-Q1 or ADS1115-Q1. IC Role / Device Role / Timing Role: Low-distortion, high-bandwidth ADC driver with rail-to-rail input to capture full dynamic range of differential IF outputs. Use Value: 0.0004% THD+N and 50 MHz GBW preserve signal integrity across 10–20 MHz IF bands, minimizing false detection in blind spot monitoring. |
Use Scenario: Conditioning analog outputs from pressure, temperature, and knock sensors in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Precision unity-gain buffer isolating high-impedance sensor elements from ADC input capacitance and digital noise coupling. Use Value: 100 µV max offset and 1 µV/°C drift ensure <±1 LSB error over full −40°C to 125°C operating range in closed-loop fuel injection control. |
| DC-DC Converter Feedback Loop | Heads-Up Display (HUD) Video Signal Chain |
Use Scenario: Amplifying voltage-sense signals in 48 V/12 V bidirectional DC-DC converters for HEV/EV powertrain systems. IC Role / Device Role / Timing Role: High-CMRR (100 dB) difference amplifier rejecting common-mode switching noise from synchronous rectifiers. Use Value: 100 dB CMRR suppresses >60 dB of PWM noise at 100–500 kHz, improving regulation accuracy and reducing output ripple. |
Use Scenario: Driving analog RGB video lines from graphics controllers to HUD projection optics with minimal color distortion. IC Role / Device Role / Timing Role: Fast-settling (0.3 µs), low-noise buffer maintaining pixel timing integrity and grayscale linearity. Use Value: 25 V/µs slew rate and 4.5 nV/√Hz noise prevent color banding and luminance artifacts in 60 Hz–120 Hz video streams. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2365AQDRQ1 | Dual-channel version in SOIC-8; identical electrical specs but higher quiescent current per channel (5.3 mA vs 4.6 mA). | Used where two matched amplifiers are needed - e.g., differential ADC drivers or stereo audio paths in infotainment. | Select OPA2365AQDRQ1 only when dual-channel integration reduces board area or improves channel matching; otherwise prefer single-channel OPA365AQDBVRQ1 for lower power and smaller footprint. |
| LMV793QMF/NOPB | 30 MHz GBW, 12 V/µs slew rate, 7 nV/√Hz noise; AEC-Q100 Grade 1, but no zero-crossover topology - exhibits crossover distortion near rails. | Suitable for less demanding sensor buffering where THD+N >0.001% is acceptable and cost is primary constraint. | Choose LMV793QMF/NOPB only in non-critical signal chains (e.g., cabin temperature sensing); avoid in radar or precision ADC driver roles due to measurable crossover distortion. |
Compared with OPA2365AQDRQ1, the OPA365AQDBVRQ1 saves 35% board area and reduces quiescent power by 15% in single-channel use cases; versus LMV793QMF/NOPB, it delivers 67% higher bandwidth, 50% faster settling, and 43% lower noise - making it essential for radar and high-fidelity automotive sensing.
Availability
OPA365AQDBVRQ1 is available at Aetrix Electronics and suitable for automotive radar receivers, engine control unit sensor interfaces, and DC-DC converter feedback loops requiring stable component supply with AEC-Q100 compliance and long-term production continuity.
Supply support for OPA365AQDBVRQ1 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-grade IC design expertise and rigorous AEC-Q100 validation infrastructure.
The OPAx365-Q1 product line was engineered specifically for high-fidelity, high-speed signal conditioning in automotive ADAS and powertrain systems - emphasizing rail-to-rail operation, ultra-low distortion, and robustness across extended temperature ranges.
FAQ
What automotive temperature grade does the OPA365AQDBVRQ1 support?
The OPA365AQDBVRQ1 is qualified to AEC-Q100 Grade 1, supporting continuous operation from −40°C to +125°C ambient temperature. This rating is verified per device-level stress testing including HBM ESD (±2 kV) and CDM ESD (±750 V), making it suitable for under-hood and transmission-control applications where thermal extremes occur. The OPA365AQDBVRQ1 maintains full electrical specifications across this range, including 100 µV max offset and 50 MHz gain bandwidth.
Does the OPA365AQDBVRQ1 require external compensation for unity-gain stability?
No, the OPA365AQDBVRQ1 is internally compensated for unity-gain stability and remains stable driving capacitive loads up to 1 nF in G = +1 configuration. Its zero-crossover topology and optimized phase margin eliminate need for external compensation networks. When driving larger capacitive loads (>1 nF), a 10–20 Ω series resistor at the output (as documented in TI's SBOS512E datasheet Figure 8-1) restores stability without degrading DC accuracy beyond 0.2% for RL ≥ 10 kΩ.
How does the zero-crossover topology in the OPA365AQDBVRQ1 improve THD+N performance?
The OPA365AQDBVRQ1 uses a patented zero-crossover input stage that replaces conventional complementary input pairs with a single, continuously biased CMOS input structure. This eliminates the offset discontinuity and distortion spike that occurs during rail transitions in standard rail-to-rail amplifiers. As a result, the OPA365AQDBVRQ1 achieves 0.0004% THD+N at 1 kHz - a 10× improvement over typical rail-to-rail op amps - critical for radar IF amplification and high-resolution ADC driving where harmonic artifacts cause false targets.
Can the OPA365AQDBVRQ1 drive the ADS7822-Q1 or ADS1115-Q1 ADCs directly?
Yes, the OPA365AQDBVRQ1 is explicitly optimized for driving the ADS7822-Q1 (12-bit, 250 kSPS) and ADS1115-Q1 (16-bit, 860 SPS) ADCs. Its 50 MHz GBW, 25 V/µs slew rate, and low output impedance (<30 Ω at 1 MHz) effectively buffer the ADC's input capacitance and suppress charge injection errors. TI's SBOS512E datasheet Figure 8-5 shows a validated noninverting interface circuit using the OPA365AQDBVRQ1 with RC filtering to further reduce sampling transients.
What is the maximum capacitive load the OPA365AQDBVRQ1 can drive while maintaining stability?
The OPA365AQDBVRQ1 remains unity-gain stable with pure capacitive loads up to 1 nF, as confirmed in TI's SBOS512E datasheet Figure 6-15. For loads exceeding 1 nF - such as large bypass capacitors or long PCB traces - stability is maintained by adding a 10–20 Ω isolation resistor in series with the output. This technique reduces overshoot and ringing without requiring changes to feedback topology, and is validated for use with the OPA365AQDBVRQ1 in automotive radar front-end designs.
OPA365AQDBVRQ1 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:
- 25V/µs
- Gain Bandwidth Product:
- 50 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 4.6mA
- Current - Output / Channel:
- 65 mA
- Voltage - Supply Span (Min):
- 2.2 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
OPA365AQDBVRQ1 FAQ
1.How can I place an order for OPA365AQDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA365AQDBVRQ1 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 OPA365AQDBVRQ1 reliable?
The price and inventory of OPA365AQDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA365AQDBVRQ1 is usually 5 days.
3.What payment methods are accepted for OPA365AQDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA365AQDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA365AQDBVRQ1?
OPA365AQDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA365AQDBVRQ1 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 OPA365AQDBVRQ1?
For technical support, including OPA365AQDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA365AQDBVRQ1 requirements.
6.How does Aetrix verify that OPA365AQDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA365AQDBVRQ1 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 OPA365AQDBVRQ1 meets industry standards.
7.What is the process for return or replacement of OPA365AQDBVRQ1?
All OPA365AQDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA365AQDBVRQ1, 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 OPA365AQDBVRQ1 part is unused and in its original packaging.
Return procedure for OPA365AQDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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