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HomeProductsIntegrated Circuits (ICs)Specialized ICsAD8515AKS
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AD8515AKS - ADI (Analog Devices, Inc.)

Manufacturer Part Number
AD8515AKS
Manufacturer
Analog Devices, Inc.
Allelco Part Number
32D-AD8515AKS
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
8,720 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
Our certification
In stock: 8720

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Quantity

Specifications

AD8515AKS Tech Specifications
ADI (Analog Devices, Inc.) - AD8515AKS technical specifications, attributes, parameters and parts with similar specifications to ADI (Analog Devices, Inc.) - AD8515AKS

Product Attribute Attribute Value
Part Number AD8515AKS
Package DAC91001
Description DAC91001
Stock Condition Get 8720 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)

How does the AD8515AKS perform in low-voltage applications compared to rail-to-rail input/output op amps with similar supply ranges?
The AD8515AKS operates from a 2.7 V to 6 V supply, making it suitable for single-supply applications, but it does not offer true rail-to-rail input or output swing. In contrast, modern rail-to-rail op amps can utilize nearly the full supply range at both inputs and outputs, which improves signal integrity in low-voltage systems. For designs requiring maximum dynamic range on a 3 V supply, this limitation may necessitate headroom considerations, especially with small input signals near ground.
What is the typical quiescent current of the AD8515AKS, and how does this affect battery-powered system longevity?
The AD8515AKS draws approximately 100 µA per amplifier channel at 5 V supply voltage. When used in a dual-op-amp configuration within a portable device running on two AA batteries (3 V), this translates to significant standby power consumption over time. For applications prioritizing energy efficiency, such as IoT sensors or wearables, alternative ultra-low-power op amps with nA-level quiescent currents may extend battery life more effectively.
Can the AD8515AKS be used in precision analog signal conditioning circuits, and what design precautions are necessary?
While the AD8515AKS offers 1 MHz gain bandwidth product and rail-to-rail outputs, its input offset voltage is specified up to ±1.5 mV, and input bias currents reach 10 pA. These characteristics make it marginal for high-precision applications like medical instrumentation or thermocouple amplification. Designers should consider calibration techniques or lower-offset alternatives when accuracy requirements exceed 0.1% of full-scale signal levels.
How does the slew rate of the AD8515AKS compare to other general-purpose op amps in the same package?
The AD8515AKS has a slew rate of 1.2 V/µs, which is moderate among SOT-23-6 packaged op amps. This limits its effectiveness in driving capacitive loads or processing fast transient signals above 500 kHz sine waves. Competing devices like the MCP6002 offer similar bandwidth but higher slew rates, making them preferable for driving piezoelectric sensors or active filters in motor control feedback loops.
What layout and decoupling practices are recommended when using the AD8515AKS in high-impedance sensor interface circuits?
Given the device's 10 pA input bias current, leakage paths and parasitic capacitances become critical in high-impedance node designs. A 0.1 µF ceramic capacitor placed directly at each V+ pin minimizes supply noise, while guard rings around sensitive traces can reduce surface contamination effects. Routing inputs away from switching regulators and using Kelvin connections for feedback resistors improves stability and reduces measurement errors in bridge sensor applications.
Is the AD8515AKS suitable for driving capacitive loads without compensation, and what risks exist?
The AD8515AKS lacks internal phase boost circuitry, so driving large capacitive loads—such as 100 nF across the output—can lead to instability and oscillation. In such cases, a series resistor (typically 10–50 Ω) must be added before the load to isolate the op amp’s output stage. This precaution is essential in audio buffer stages or long cable drives where distributed capacitance exceeds 10 nF.
How does the unity-gain stability of the AD8515AKS compare to compensated op amps designed for unity-gain operation?
The AD8515AKS is internally compensated for unity-gain stability, allowing direct use in non-inverting buffers and transimpedance amplifiers. However, its phase margin under heavy capacitive loading is narrower than dedicated unity-gain stable parts like the OPA333. Therefore, while safe at unity gain, performance degrades rapidly when external capacitance increases beyond what the compensation network can handle.
What are the thermal limitations of the AD8515AKS in compact PCB layouts?
Operating in ambient temperatures above 60°C with continuous output loading near saturation can push junction temperatures beyond 125°C due to the limited exposed pad dissipation in the SOT-23-6 package. Without proper copper pour or thermal relief, localized heating may cause reliability issues. Designers should derate power dissipation by 30% in enclosed spaces and avoid placing adjacent components that radiate heat toward the op amp.
Can the AD8515AKS be used in bidirectional level-shifting applications between 3.3 V and 5 V logic lines?
The AD8515AKS supports rail-to-rail output swing, enabling output voltages close to both rails. However, its common-mode input range excludes the negative rail, limiting it to unipolar operation. Thus, it cannot directly interface with bidirectional digital signals unless configured in open-drain mode or paired with external MOSFETs. For true bidirectional translation at 3.3 V to 5 V thresholds, dedicated level translators or MOSFET-based solutions are more appropriate.
How does input protection circuitry affect performance when using the AD8515AKS in industrial environments?
Although the AD8515AKS does not include ESD diodes on inputs, adding external clamping networks introduces parasitic capacitance and leakage paths that degrade high-impedance performance. In noisy environments, series resistors (e.g., 1 kΩ) combined with TVS diodes improve robustness but increase rise times. Careful placement and selection of protection components are necessary to balance EMI resilience against signal fidelity.
What is the output drive capability of the AD8515AKS into a standard TTL load, and does it require buffering?
The AD8515AKS can source/sink up to 35 mA peak current, sufficient to drive standard TTL inputs directly without buffering. However, under sustained loading or with multiple inputs pulled high simultaneously, voltage droop may occur if the load current exceeds 20 mA continuously. For reliable operation, limiting the pull-up resistance to below 100 Ω ensures adequate noise margins without overloading the op amp.
How does temperature drift impact the offset voltage of the AD8515AKS in long-term monitoring systems?
Over a -40°C to +85°C operating range, the input offset voltage of the AD8515AKS drifts by approximately 10 µV/°C. For a 1.5 mV initial offset, this results in a total variation of ±150 µV across extremes—insignificant for most consumer electronics but potentially problematic in strain gauge bridges where microvolt resolution matters. Calibration at multiple temperatures or selection of lower-drift variants would be advisable for precision data logging.
Can the AD8515AKS replace a comparator in slow-speed switching applications, and what trade-offs exist?
Yes, the AD8515AKS can function as a comparator in non-critical timing scenarios due to its wide bandwidth and rail-to-rail outputs. However, its overdrive recovery time is longer than dedicated comparators, leading to delayed response after large input transients. Additionally, internal hysteresis is absent, increasing susceptibility to noise-induced false triggering. For reliable edge detection, external Schmitt triggers or comparator ICs remain superior choices.
What is the maximum recommended feedback resistor value for stable operation with the AD8515AKS in high-gain transimpedance configurations?
Due to input bias current fluctuations and parasitic capacitance, transimpedance gains above 1 MΩ introduce significant settling errors and noise pickup. With 10 pA bias current, a 1 MΩ resistor produces a 10 µA offset error, equivalent to a 10 mV output shift—unacceptable in photon-counting circuits. Practical limits typically cap feedback resistances at 100 kΩ unless guarding and shielding are rigorously implemented.
How does the PSRR of the AD8515AKS influence performance in systems with unstable power supplies?
The AD8515AKS exhibits a PSRR of about 80 dB at DC, meaning a 100 mV ripple on the supply appears as 10 µV at the output. While adequate for most regulated supplies, this degrades in poorly filtered battery-powered systems where ripple exceeds 100 mVpp. In such cases, additional LC filtering or post-regulator op amp stages help decouple supply noise from sensitive signal paths.
What precautions are needed when cascading multiple stages using the AD8515AKS in audio preamplifiers?
Each AD8515AKS stage contributes noise and distortion; cascading three or more stages risks cumulative bandwidth roll-off and phase distortion, especially beyond 100 kHz. To maintain flat frequency response, interstage coupling capacitors must be sized appropriately, and gain distribution should minimize overall closed-loop bandwidth loss. Alternatively, integrating all stages into a single IC or using higher-performance audio op amps provides superior linearity and reduced crosstalk.
Can the AD8515AKS operate reliably in automotive-grade temperature environments without qualification?
The AD8515AKS is specified from -40°C to +85°C, aligning with basic industrial standards but falling short of full automotive AEC-Q100 requirements. In harsh automotive settings with thermal cycling, humidity, and vibration, extended reliability testing is advised. While functional in many infotainment subsystems, mission-critical functions like engine control or safety systems demand qualified components with enhanced derating and failure modes analysis.
How does the package size of the AD8515AKS impact routing density in space-constrained wearable devices?
The SOT-23-6 footprint measures just 2.9 mm × 1.6 mm, enabling dense placement on flex PCBs used in hearing aids or fitness trackers. However, the lack of an exposed thermal pad limits heat sinking, requiring careful trace routing to avoid coupling with hot components. Automated assembly yields are favorable, but manual prototyping benefits from socket compatibility due to the fragile lead frame structure under repeated handling.

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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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

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Delivery Method

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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
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
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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ADI (Analog Devices, Inc.)

AD8515AKS

ADI (Analog Devices, Inc.)
32D-AD8515AKS

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