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HomeProductsIntegrated Circuits (ICs)Specialized ICsOPA4364Q
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OPA4364Q - BURR-BROWN

Manufacturer Part Number
OPA4364Q
Manufacturer
BURR-BROWN
Allelco Part Number
32D-OPA4364Q
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
6,840 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
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In stock: 6840

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OPA4364Q Tech Specifications
BURR-BROWN - OPA4364Q technical specifications, attributes, parameters and parts with similar specifications to BURR-BROWN - OPA4364Q

Product Attribute Attribute Value
Part Number OPA4364Q
Package DAC91001
Description DAC91001
Stock Condition Get 6840 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer BURR-BROWN
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Frequently Asked Questions(FAQ)

How does the OPA4364Q's input common-mode voltage range compare to single-supply operation requirements in automotive applications, and what design implications arise when operating near rail-to-rail?
The OPA4364Q features a wide input common-mode voltage range that extends very close to both supply rails, making it suitable for single-supply operation down to 2.7 V. In automotive environments where systems often operate on a 5-V or 3.3-V supply, this allows signal conditioning of inputs near ground without requiring level shifting. However, designers must ensure that input signals do not exceed the absolute maximum ratings, particularly during transient events such as load dump conditions. The amplifier’s low input offset voltage (typically 0.5 mV) further supports accurate measurements in precision sensing circuits, but layout parasitics can degrade effective CMRR if traces are not carefully routed.
What are the key differences in noise performance between the OPA4364Q and similar quad op-amps like the OPA336, especially in battery-powered sensor interfaces?
The OPA4364Q exhibits an input-referred voltage noise density of approximately 18 nV/√Hz at 1 kHz, which is competitive with many precision CMOS amplifiers. Compared to the OPA336—which has slightly lower noise at around 15 nV/√Hz but operates only down to 1.8 V—the OPA4364Q trades marginally higher noise for superior dynamic range and rail-to-rail performance up to 5.5 V. For battery-powered systems using a 3-V supply, this difference becomes significant over bandwidth; integrating the OPA4364Q across 100 Hz to 10 kHz yields a total noise of about 58 µV RMS, whereas the OPA336 achieves roughly 52 µV RMS. Thus, while the OPA336 may be preferable in ultra-low-power, ultra-low-voltage scenarios, the OPA4364Q offers better headroom for signal integrity in moderate-precision applications.
Can the OPA4364Q be used in precision gain stages requiring less than 0.1% gain error over temperature, and what layout considerations are essential?
Yes, the OPA4364Q can meet stringent gain accuracy requirements due to its low input offset drift (0.5 µV/°C typical) and high open-loop gain (>100 dB). To achieve <0.1% gain stability from -40°C to +125°C, external resistors should exhibit tight tolerance (≤0.1%) and low TCR (≤25 ppm/°C). Additionally, PCB layout must minimize thermocouple effects by matching trace materials and keeping feedback paths short. Guard rings around sensitive nodes and proper grounding techniques help preserve CMRR above 100 dB. Failure to address these factors can introduce errors exceeding 0.05%, negating the benefits of the amplifier’s internal compensation.
How does the OPA4364Q handle capacitive loading in unity-gain buffer configurations, and what stability trade-offs exist when driving long cables in industrial control systems?
The OPA4364Q includes built-in frequency compensation optimized for unity-gain stability with moderate capacitive loads. It remains stable up to approximately 100 pF without external compensation, but driving loads beyond this threshold—such as those encountered in long cable runs (>1 m in noisy environments)—can lead to peaking or oscillations. In such cases, adding a small series resistor (e.g., 10–50 Ω) at the output helps dampen interactions between the op-amp’s output impedance and cable capacitance. Alternatively, switching to a gain-of-two configuration improves phase margin by reducing closed-loop bandwidth, trading speed for robustness. This approach is common in PROFIBUS or Ethernet-based sensor networks where signal integrity outweighs response time.
What is the impact of power supply rejection ratio (PSRR) degradation at higher frequencies when using the OPA4364Q in switched-mode power supply monitoring circuits?
At DC, the OPA4364Q maintains a PSRR of >90 dB, ensuring minimal sensitivity to 50/60 Hz ripple or DC droop. However, PSRR drops rapidly beyond 1 kHz, falling below 40 dB by 100 kHz. In SMPS monitoring applications where switching harmonics extend into the MHz range, this means that conducted EMI from adjacent converters may couple directly into the measurement path unless filtered aggressively at the amplifier’s supply pins. A typical solution involves placing ferrite beads and low-ESR ceramic capacitors (e.g., 10 µF bulk + 0.1 µF bypass) close to the IC. Without such filtering, PSRR degradation can translate into measurable offset shifts equivalent to several millivolts, corrupting ADC readings in microcontroller-based monitoring loops.
Is the OPA4364Q suitable for use in isolated measurement channels, and what isolation mechanisms must complement it?
No, the OPA4364Q does not provide electrical isolation by itself. While its low leakage current (<1 nA) and robust ESD protection make it reliable within a single ground plane, any system requiring galvanic separation—such as medical devices or high-voltage industrial sensors—must incorporate external isolation barriers. These typically include opto-isolators, capacitive couplers, or magnetic isolators rated for the required creepage distance. The amplifier should reside on the non-isolated side, with analog outputs passing through the barrier to avoid compromising safety certifications. Proper grounding discipline across the isolation boundary remains critical to prevent ground loops and ensure consistent CMRR performance.
How does the OPA4364Q perform in multiplexed data acquisition systems, and what precautions are needed when switching between channels?
As part of a quad-channel architecture, the OPA4364Q enables simultaneous sampling of four signals with matched propagation delays (±5 ns typical), beneficial in multi-sensor fusion applications. However, rapid channel switching without settling time allowance introduces crosstalk and settling errors. When used with analog multiplexers, each transition should allow at least 5 × τ (where τ is the RC time constant of the source and filter network) before acquiring data—typically 50–200 µs depending on configuration. Additionally, minimizing trace lengths and using guard traces between channels preserves crosstalk below −80 dB. Failure to respect these timing constraints results in inaccurate conversions, particularly in high-resolution ADCs (e.g., 16-bit or higher).
What are the thermal limitations of the SOT23-6 package containing the OPA4364Q, and how do they affect continuous output current capability in compact designs?
The SOT23-6 package has a maximum junction temperature of 150°C and a θJA (junction-to-ambient thermal resistance) of approximately 180°C/W under still air. Assuming a 5-V supply and ±10-mA output swing, power dissipation reaches ~100 mW per channel. At 25°C ambient, this implies a maximum allowable continuous output current of around 8 mA per amplifier before exceeding temperature limits. In compact, densely populated PCBs with limited airflow, derating to 5 mA or less is advisable. Thermal vias under the exposed pad (if available) significantly improve heat spreading, but designers must verify actual operating temperatures using worst-case simulations or prototypes.
Can the OPA4364Q drive TTL logic levels reliably when interfacing with legacy digital systems, and what resistor values optimize rise/fall times?
Yes, the OPA4364Q can source or sink up to ±20 mA, enabling direct drive of standard TTL inputs (high-level minimum 2.0 V, low-level maximum 0.8 V). Using a pull-up resistor of 4.7 kΩ to VCC ensures clean transitions without excessive loading. However, parasitic inductance in long traces slows edge rates; adding a small series damping resistor (22–100 Ω) near the output reduces ringing and overshoot. Care must be taken not to exceed the amplifier’s slew rate (0.5 V/µs typical), which limits maximum achievable rise time to approximately 10 µs for a 5-V swing. In clock distribution applications, buffering with dedicated line drivers may be preferable.
How does the OPA4364Q compare to discrete transistor solutions in terms of bias current stability and long-term reliability?
Unlike discrete BJT or FET stages, the OPA4364Q uses advanced bipolar input transistors with integrated biasing that minimizes drift due to aging and temperature cycling. Its input bias current is specified at 80 pA (typical), with a drift of <0.1 pA/°C—orders of magnitude more stable than discrete designs relying on resistor networks for bias stabilization. Over five years, bias current variation remains within ±10 pA, preserving gain accuracy in transimpedance or instrumentation amplifiers. Discrete alternatives require careful selection and trimming, increasing bill-of-materials cost and test overhead. For mass-produced consumer electronics, the OPA4364Q reduces calibration needs and improves field reliability.
What input protection mechanisms are inherent to the OPA4364Q, and when should transient suppressors be added?
The OPA4364Q includes internal ESD diodes rated at ±4 kV HBM, providing basic protection against handling damage. However, these diodes clamp only to the supply rails and cannot absorb sustained overvoltage events. In harsh environments—such as automotive LIN/CAN buses or factory automation—external transient voltage suppressors (TVS) with fast response (<1 ns) and low clamping voltage (e.g., 6.8 V for a 5-V system) are recommended. Placement should occur as close as possible to connectors or cable entries. Combined with proper PCB creepage and clearance, this layered approach prevents latch-up or catastrophic failure during electrostatic discharge or inductive kickback.
Does the OPA4364Q support bidirectional current flow in fault detection circuits, and how does its output stage behave under short-circuit conditions?
No, the OPA4364Q is not designed for bidirectional operation. Its output stage is current-limited to ±20 mA and enters foldback limiting during overloads, reducing current to protect the device. Under sustained short-circuit conditions, power dissipation rises rapidly, potentially triggering thermal shutdown after several microseconds. While this prevents immediate damage, repeated cycling without cooling intervals accelerates die stress. In current-sense applications requiring reverse polarity tolerance, external MOSFETs or dedicated sense amplifiers with back-biasing are preferred. The OPA4364Q excels in unidirectional signal chains where output direction is fixed and controlled.
How does the OPA4364Q perform in high-impedance sensor front-ends compared to JFET-input alternatives?
With an input bias current of 80 pA and input capacitance of 5 pF, the OPA4364Q performs well in high-Z sensor interfaces such as piezoelectric transducers or resistive bridges. However, compared to specialized JFET-input amplifiers (e.g., LMC6482 with sub-pA bias current), it draws more charge from the source. For sensors with impedances above 1 GΩ, even 80 pA causes measurable loading effects. In such cases, guarding techniques, low-leakage switches, and impedance buffers become essential. The OPA4364Q is optimal for moderate-impedance sources (<1 MΩ) where speed and linearity justify its higher bias current.
What is the effect of enabling all four amplifiers in the OPA4364Q simultaneously on total supply current, and how does this influence battery life in portable devices?
Each amplifier in the OPA4364Q draws approximately 3.2 mA at 5 V with no load. Enabling all four channels increases quiescent current to 12.8 mA. When combined with ADC drivers and microcontrollers consuming 2–5 mA, this totals ~15–18 mA average current. In a 3.7-V Li-ion battery system with 1000 mAh capacity, continuous operation yields roughly 55 hours of runtime. Duty cycling or power gating unused channels can extend battery life by 30–50%. Designers should evaluate whether parallel amplification justifies the power cost or if a single high-speed ADC with time-multiplexing suffices.
Can the OPA4364Q be used in audio applications requiring low distortion and wide bandwidth, and what nonlinearities should be considered?
Yes, the OPA4364Q exhibits THD+N of 0.002% at 1 kHz with a 2-Vpp output, making it suitable for sub-audio instrumentation rather than full-range audio playback. Its gain-bandwidth product of 10 MHz supports bandwidths up to 2 MHz in noninverting configurations. However, crossover distortion and slew-induced nonlinearity become noticeable above 50 kHz. For true audio fidelity (up to 20 kHz), amplifiers with explicit class-AB output stages and higher slew rates (≥5 V/µs) are preferred. The OPA4364Q may serve as a preamplifier or filter driver in MEMS microphone arrays or ultrasonic sensors.
How does the OPA4364Q handle rapid input step changes in feedback-critical applications such as sample-and-hold circuits?
Upon receiving a large input step, the OPA4364Q responds within 10 µs to settle within 0.01% of final value, thanks to its 0.5 V/µs slew rate and internal compensation. In sample-and-hold architectures, this enables accurate capture of transient signals without significant droop. However, the hold capacitor’s ESR and leakage current introduce settling errors over time. Typical values require Cs ≥ 100 pF and leakage < 0.1 pA/cm². Switches with low charge injection (<10 fC) further preserve accuracy. Without these precautions, hold mode degradation exceeds 1 LSB in 12-bit systems after 1 ms.
What are the implications of using the OPA4364Q in mixed-signal systems sharing a noisy digital ground?
Sharing a ground plane between analog and digital sections forces return currents through shared impedances, creating ground potential differences that degrade analog performance. The OPA4364Q’s CMRR drops by 20–30 dB when subjected to 100 mV of differential ground noise, equating to ~10 µV of error in a gain-of-one buffer. To mitigate this, separate analog and digital grounds connected at a single point near the power entry reduce loop areas. Star grounding and thick traces for high-current paths minimize IR drop. Ferrite chokes on digital lines also suppress conducted emissions that couple into the analog domain.

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
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OPA4364Q

BURR-BROWN
32D-OPA4364Q

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