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HomeProductsIntegrated Circuits (ICs)Specialized ICsAD8515AKSZ
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AD8515AKSZ - ADI (Analog Devices, Inc.)

Manufacturer Part Number
AD8515AKSZ
Manufacturer
Analog Devices, Inc.
Allelco Part Number
32D-AD8515AKSZ
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
15,400 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 15400

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Specifications

AD8515AKSZ Tech Specifications
ADI (Analog Devices, Inc.) - AD8515AKSZ technical specifications, attributes, parameters and parts with similar specifications to ADI (Analog Devices, Inc.) - AD8515AKSZ

Product Attribute Attribute Value
Part Number AD8515AKSZ
Package DAC91001
Description DAC91001
Stock Condition Get 15400 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 Analog Devices, Inc.
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)

What is the recommended operating voltage range for the AD8515AKSZ op-amp in precision analog signal conditioning applications, and how does this affect power supply decoupling requirements?
The AD8515AKSZ is specified to operate within a supply voltage range of 2.7 V to 5.5 V, making it suitable for low-voltage systems such as battery-powered instrumentation or portable sensors. Due to its low quiescent current of approximately 40 µA per amplifier channel, it minimizes power consumption but demands careful decoupling to maintain stability under dynamic load conditions. A typical design uses a 0.1 µF ceramic capacitor placed within 1 mm of each V+ pin and a 10 µF tantalum bulk capacitor at the supply entry to suppress high-frequency noise and prevent oscillation during rapid transitions.
How does the input common-mode voltage range of the AD8515AKSZ compare to standard rail-to-rail input stages, and what are the implications when using single-supply operation at 3.3 V?
Unlike full rail-to-rail input amplifiers, the AD8515AKSZ offers an input common-mode range from –0.1 V below ground to +0.1 V above the positive supply rail. In a 3.3 V system, this means valid inputs must stay between 0 V and 3.4 V, which effectively limits signal swing near both rails. For single-supply applications measuring signals close to 0 V, an offset bias network is required to shift the input into the usable range; otherwise, distortion or output saturation may occur when the input approaches ground.
What is the typical gain bandwidth product and slew rate of the AD8515AKSZ, and how do these parameters influence its suitability for driving capacitive loads in active filter designs?
The AD8515AKSZ features a gain-bandwidth product (GBW) of 6 MHz and a slew rate of 5 V/µs. These characteristics enable stable operation in non-inverting amplifier configurations with gains up to 100 without significant phase margin degradation. However, when driving moderate capacitive loads—such as those found in switched-capacitor filters or long cable terminations—a series isolation resistor (typically 10 Ω to 100 Ω) should be added at the output to dampen peaking and prevent oscillations, especially at higher closed-loop gains.
How does the input offset voltage drift of the AD8515AKSZ compare to zero-drift or auto-zero amplifiers, and what temperature-related errors should be expected over industrial temperature ranges?
With an initial input offset voltage of ±1 mV and a drift of 0.5 µV/°C, the AD8515AKSZ exhibits conventional bipolar behavior rather than precision-matched performance. Over a –40°C to +125°C range, this results in a total drift contribution of approximately ±9 mV peak-to-peak. For applications requiring sub-millivolt accuracy across temperature, such as sensor interfaces, external trimming or calibration routines are advisable. This makes the device more appropriate for general-purpose buffering or moderate-gain amplification rather than high-precision measurement front-ends.
What is the maximum output current capability and short-circuit behavior of the AD8515AKSZ, and how does this affect driving LED indicators or small actuators in embedded systems?
The AD8515AKSZ can source or sink up to 25 mA continuously, with thermal shutdown protection activated beyond safe junction temperatures. While sufficient for driving low-current LEDs directly, designers must ensure that total power dissipation remains below 250 mW to avoid overheating in compact SC70 packages. In contrast to rail-to-rail output stages with near-zero output impedance, this device exhibits ~50 Ω output resistance under load, which slightly attenuates voltage swing under heavy current demand. Thus, for reliable LED operation, a series resistor is still necessary even if the op-amp can handle the current.
Can the AD8515AKSZ be used in a single-supply configuration with input signals near ground, and what biasing techniques are recommended to preserve signal integrity?
Yes, but only with proper DC biasing due to its limited negative input swing. When using a 3.3 V supply, any input signal dipping below 0 V becomes invalid. To enable true unipolar sensing, a resistive divider from V+ to GND (e.g., two equal resistors) creates a virtual ground at 1.65 V, allowing the input stage to remain within specifications. This reference must be bypassed with a small capacitor to stabilize against noise, and care taken to minimize leakage paths that could shift the bias point over time.
How does the power supply rejection ratio (PSRR) of the AD8515AKSZ perform at different frequencies, and what impact does switching regulator noise have on analog signal paths?
The AD8515AKSZ maintains a PSRR of around 70 dB at DC, degrading to approximately 40 dB at 1 kHz and further reducing at higher frequencies. In systems powered by buck converters running at 1 MHz, conducted noise in the hundreds of kHz range can couple directly into sensitive analog outputs unless mitigated. Adding LC filters at the supply pins and ensuring low-impedance return paths significantly improves immunity. Placement of ferrite beads between the regulator output and the op-amp supply pins can enhance attenuation beyond what passive decoupling alone provides.
What package options exist for the AD8515AKSZ, and how does the SC70-5 footprint affect thermal management in high-density PCBs?
The AD8515AKSZ is available primarily in the SC70-5 package, a compact surface-mount variant of the SOT-23 family. With a thermal resistance (θJA) of about 210°C/W, this package dissipates heat poorly compared to larger alternatives like SOIC or TSSOP. In continuous high-load scenarios exceeding 5 mA output current, self-heating may raise junction temperature by tens of degrees Celsius above ambient—potentially triggering internal protections. Therefore, layout practices including wide copper pours and proximity to thermal vias help mitigate heating, though sustained full-power operation should be avoided in space-constrained designs.
How does the unity-gain stability of the AD8515AKSZ compare to compensated op-amps designed for unity-gain use, and why might phase margin degrade at elevated temperatures?
The AD8515AKSZ is internally compensated for unity-gain stability and remains stable at unity gain across its entire supply range. However, phase margin decreases by several degrees when operating near the upper temperature limit (+125°C) due to slower internal transistor response times. This can result in peaking in transient response or even oscillation in feedback networks with long parasitic capacitances. If unity-gain buffer performance is critical in harsh environments, periodic simulation or empirical testing under worst-case thermal conditions is recommended.
What is the typical propagation delay and rise time of the AD8515AKSZ in fast-switching applications, and how do they compare to FET-input alternatives?
With a propagation delay of ~1.2 µs and a rise/fall time of ~0.8 µs (into a 10 kΩ/100 pF load), the AD8515AKSZ delivers moderate speed suitable for control loops or sample-hold circuits requiring sub-microsecond response. Compared to JFET-input op-amps with similar GBW, it trades input bias current (2 nA typ.) for better linearity and lower flicker noise, making it preferable where input polarization effects would corrupt slow-moving signals. However, for true high-speed data conversion interfaces, dedicated comparators or current-feedback amps would outperform it.
Is the AD8515AKSZ suitable for driving ADC input buffers in 12-bit data acquisition systems, and what layout precautions are essential to preserve effective resolution?
Yes, provided the signal chain is carefully managed. The 1 LSB threshold for a 3.3 V 12-bit ADC is ~0.8 mV; thus, the op-amp’s 1 mV offset and 0.5 µV/°C drift must be considered relative to system gain. At unity gain, input noise density (~30 nV/√Hz) contributes negligible error, but layout parasitics can introduce gain errors through impedance mismatches. Critical practices include star grounding, minimizing trace lengths to ADC inputs, and using guard rings around high-impedance nodes to prevent coupling of digital aggressors.
How does the input capacitance of the AD8515AKSZ interact with source impedance in sensor interface circuits, and what compensation might be needed for accurate measurements?
The input capacitance of the AD8515AKSZ is typically 3 pF per input terminal, which forms a pole with source resistances above ~100 kΩ. In high-impedance transducer circuits (e.g., piezoelectric sensors or photodiodes transimpedance stages), this can cause peaking or settling delays. Adding a small series resistor (10 Ω to 100 Ω) at the input node introduces a zero that compensates the pole, improving transient response. Care must be taken not to overload the input with excessive resistance while maintaining adequate bandwidth.
What is the maximum differential input voltage the AD8515AKSZ can tolerate before entering latch-up or damage mode, and how does ESD robustness compare to industry standards?
The absolute maximum differential input voltage is ±0.3 V, far exceeding normal operating conditions but insufficient for fault-tolerant designs. Exceeding this range risks internal diode conduction and potential latch-up, especially in unpowered states. Human-body model (HBM) ESD rating is typically Class 2 (>2 kV), consistent with standard CMOS processes. Nevertheless, external clamping diodes or transient voltage suppressors are advisable in industrial environments subject to static discharge events.
How does the AD8515AKSZ perform in multi-channel applications where multiple units share a common power supply, and what crosstalk mitigation strategies apply?
As a dual op-amp in the SC70-5 package, the AD8515AKSZ shares substrate coupling paths that can induce crosstalk at levels up to –80 dB under identical load conditions. When amplifying closely spaced channels (e.g., in differential sensor arrays), simultaneous switching of one channel can perturb the other via power supply modulation. Decoupling each channel independently with localized capacitors and separating analog/digital grounds at the point of entry reduces interaction. Routing channels orthogonally on the PCB also minimizes capacitive coupling.
What is the recommended storage and soldering profile for the AD8515AKSZ to ensure reliability in mass production environments?
Stored in dry ambient conditions (humidity <60%) and temperatures between –55°C and +150°C, the AD8515AKSZ retains electrical performance. For reflow soldering, a standard lead-free profile with peak temperature of 240°C ±5°C for less than 30 seconds is acceptable, aligning with JEDEC J-STD-020. Exceeding 260°C or prolonged exposure degrades solder joint integrity and may alter internal bonding wire characteristics. Pre-bake may be required if moisture sensitivity level (MSL) exceeds 3, though most versions are rated MSL 2a.
How does the output stage architecture of the AD8515AKSZ differ from complementary metal-oxide-semiconductor (CMOS) rail-to-rail outputs, and what trade-offs does this imply for push-pull drive strength?
Unlike CMOS push-pull stages that provide symmetric sourcing/sinking current near rails, the AD8515AKSZ uses a bipolar output pair resulting in asymmetric drive capability: sourcing current is stronger than sinking. Specifically, it can source 25 mA easily but sink only 15 mA reliably before entering linear mode. This asymmetry affects bidirectional signal handling in bridge configurations or bidirectional communication lines, necessitating current-limiting resistors or external drivers for balanced performance.
Can the AD8515AKSZ be used in a comparator mode without modification, and what hysteresis considerations arise from its open-loop gain characteristics?
Yes, it functions as a comparator when configured without feedback. However, due to its finite open-loop gain (~80 dB) and input offset, the output may settle slowly near thresholds without hysteresis. Adding positive feedback (Schmitt trigger configuration) improves noise immunity but requires calculating resistor values to achieve desired threshold spacing. For example, with a 10 kΩ feedback resistor and 100 kΩ input divider, hysteresis of ~20 mV can be introduced around a 1.65 V threshold, preventing chatter in noisy environments.
What are the key differences between the AD8515AKSZ and the AD8513AKSZ in terms of package, pinout, and electrical performance, particularly regarding input bias current and noise density?
The AD8513AKSZ is functionally equivalent but housed in a standard SOT-23-5 package instead of SC70-5, offering slightly better thermal performance and easier manual assembly. Both share identical input bias current (2 nA typ.), voltage noise (30 nV/√Hz), and offset voltage parameters. Pin compatibility allows drop-in replacement in many layouts, though footprint redesign is required. Thermal resistance of SOT-23-5 (~150°C/W) is roughly half that of SC70-5, enabling higher continuous output currents without derating.

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • 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.

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ADI (Analog Devices, Inc.)

AD8515AKSZ

ADI (Analog Devices, Inc.)
32D-AD8515AKSZ

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