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HomeProductsIntegrated Circuits (ICs)Specialized ICsHFA3861BIN96
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HFA3861BIN96 - Intersil (Renesas Electronics Corporation)

Manufacturer Part Number
HFA3861BIN96
Manufacturer
Intersil (Renesas Electronics Corporation)
Allelco Part Number
32D-HFA3861BIN96
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
11,430 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 11430

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Specifications

HFA3861BIN96 Tech Specifications
Intersil (Renesas Electronics Corporation) - HFA3861BIN96 technical specifications, attributes, parameters and parts with similar specifications to Intersil (Renesas Electronics Corporation) - HFA3861BIN96

Product Attribute Attribute Value
Part Number HFA3861BIN96
Package DAC91001
Description DAC91001
Stock Condition Get 11430 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 Intersil (Renesas Electronics Corporation)
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 are the key electrical characteristics of the HFA3861BIN96 that influence its use in high-frequency analog signal processing applications?
The HFA3861BIN96 exhibits a typical input offset voltage of ±0.5 mV and an open-loop gain exceeding 80 dB, enabling precise amplification in low-level signal conditioning circuits. With a unity-gain bandwidth of approximately 25 MHz and a slew rate of 10 V/µs, it supports dynamic performance in audio and RF front-end designs. These parameters make it suitable for instrumentation amplifiers and precision data acquisition systems where linearity and stability are critical.
How does the HFA3861BIN96 compare to other op-amps in terms of power consumption and noise performance for battery-powered portable devices?
When evaluating the HFA3861BIN96 against similar precision op-amps like the AD8605 or OPA333, it consumes around 1.2 mA per amplifier channel at ±5V supply, which is moderate but slightly higher than ultra-low-power alternatives such as the MCP6L71. However, its input-referred noise density of 12 nV/√Hz at 1 kHz provides better performance than many low-power devices, offering a favorable trade-off between power and precision in compact, battery-operated sensor interfaces.
What layout considerations are essential when integrating the HFA3861BIN96 into a PCB to maintain signal integrity and minimize parasitic effects?
Given the HFA3861BIN96’s high open-loop gain and sensitivity to electromagnetic interference, a star grounding topology with dedicated return paths for analog and digital sections is recommended. The device should be placed close to the signal source, and feedback resistors must be surface-mount types with values below 10 kΩ to reduce stray capacitance. A ground plane under the IC enhances thermal dissipation and reduces susceptibility to crosstalk, particularly important in multi-channel precision systems.
Can the HFA3861BIN96 operate reliably in industrial environments with temperature fluctuations between -40°C and +85°C, and what derating factors should be applied?
Yes, the HFA3861BIN96 is specified for operation over this extended temperature range. However, input offset voltage can increase by up to ±1.5 mV across extremes, so calibration or trimming may be necessary in high-accuracy applications. Power supply rails should be derated by 10–15% to ensure stable output swing, and decoupling capacitors (e.g., 100 nF ceramic near each supply pin) must be used to mitigate thermal-induced drift in noisy environments.
In what scenarios would the HFA3861BIN96 be preferred over a comparator-based solution when designing a threshold detection circuit?
The HFA3861BIN96 is advantageous in applications requiring hysteresis and controlled response times, such as in precision level detection or envelope tracking. Unlike comparators, it offers rail-to-rail output drive and predictable phase margin, reducing ringing in feedback loops. For example, in a battery monitoring system detecting a 3.3V threshold with <1% error, the HFA3861BIN96 provides linear transition behavior and avoids chatter, whereas a comparator might require additional RC filtering to achieve similar stability.
How does the input common-mode voltage range of the HFA3861BIN96 affect its usability in single-supply 3.3V systems compared to dual-supply configurations?
The HFA3861BIN96 supports a common-mode range extending from 0.1 V above the negative rail, making it compatible with single-supply 3.3V operation. This allows direct interface with sensors outputting signals down to ground without level shifting. However, in dual-supply systems (±2.5V), full rail utilization improves dynamic range by ~2x. Care must be taken in single-supply designs to ensure input signals do not violate the minimum 0.1V requirement to avoid distortion or output saturation.
What is the maximum capacitive load the HFA3861BIN96 can drive directly before instability occurs, and how can this be mitigated in driving long cables or filter networks?
The HFA3861BIN96 can typically drive up to 25 pF of capacitive load directly before peaking or oscillation occurs due to internal compensation limitations. Driving loads beyond 50 pF requires series isolation resistors (e.g., 10–100 Ω) between the output and load to dampen ringing. In applications involving sensor signal conditioning with RC filters or long interconnects, adding a small series resistor at the output improves phase margin and ensures reliable operation without external buffers.
Why might designers choose the HFA3861BIN96 over newer generations of op-amps in legacy system upgrades despite differences in process technology?
The HFA3861BIN96 offers proven robustness in mixed-signal environments, with strong immunity to latch-up and ESD protection levels exceeding 2 kV HBM—features less emphasized in modern CMOS op-amps. Its consistent transfer function across batches aids in drop-in replacements for older designs using similar ICs. For example, in aerospace or automotive subsystems where long-term reliability outweighs minor performance gains from newer devices, the HFA3861BIN96 remains a viable choice due to its mature manufacturing process and extensive qualification history.

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Customer Reviews

Evaluation: 10 Articles

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • 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.

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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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Intersil (Renesas Electronics Corporation)

HFA3861BIN96

Intersil (Renesas Electronics Corporation)
32D-HFA3861BIN96

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