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HomeProductsIntegrated Circuits (ICs)Specialized ICsAD8609ARU
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AD8609ARU - Analog Devices

Manufacturer Part Number
AD8609ARU
Manufacturer
Analog Devices, Inc.
Allelco Part Number
41D-AD8609ARU
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
16,550 pcs available, New & Original
Parts Description
-
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
Compare
Our certification
In stock: 16550
  • Unit Price: $2.40
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $2.40 $2.40
200+ $0.929 $185.80
500+ $0.897 $448.50
1000+ $0.88 $880.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

AD8609ARU Tech Specifications
Analog Devices - AD8609ARU technical specifications, attributes, parameters and parts with similar specifications to Analog Devices - AD8609ARU

Product Attribute Attribute Value
Part Number AD8609ARU
Package -
Description -
Stock Condition Get 16550 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 input bias current and how does it affect precision in low-power applications using the AD8609ARU?
The AD8609ARU features an exceptionally low input bias current of just 1pA, which significantly reduces errors in high-impedance sensor interfaces and battery-powered systems. This characteristic minimizes loading effects on source impedances above approximately 100MΩ, making it suitable for thermocouple amplifiers and photodiode preamplifiers where signal integrity depends on minimal charge injection. When designing with feedback networks exceeding 10MΩ resistance, this parameter directly impacts DC accuracy more than thermal noise considerations.
How does the input offset voltage drift compare between the AD8609ARU and typical JFET-input op-amps in temperature-varying environments?
With an input offset voltage drift of 4.5µV/°C, the AD8609ARU demonstrates superior thermal stability compared to standard JFET-input devices that often exhibit drift values exceeding 10µV/°C. In a 100°C operating range (e.g., from -40°C to +60°C), this results in a total offset variation of 450µV versus potentially over 1mV for conventional JFET types. This reduced drift enhances long-term calibration stability in industrial control systems where temperature cycling occurs regularly.
Can the AD8609ARU drive capacitive loads effectively without oscillation, and what compensation techniques are recommended?
Yes, the AD8609ARU maintains stability up to 1nF capacitive loads due to its internal compensation architecture and high phase margin. For loads beyond 2nF, adding a small series resistor (typically 10–50Ω) at the output helps prevent peaking while maintaining slew rate performance. In precision filter applications with >5nF loads, consider using unity-gain stable configuration with isolation resistors to preserve bandwidth below 10MHz.
What is the maximum usable gain bandwidth product limitation when driving resistive loads above 1kΩ with the AD8609ARU?
Although not specified as GBW, the combination of 100V/ms slew rate and 100dB CMRR limits practical closed-loop gains to approximately 100kHz for unity-gain buffers. At 10× gain with 1kΩ load, bandwidth remains above 500kHz, but at 100× gain, gain error exceeds 5% due to internal limitations. For precision applications requiring >100× gain, external compensation or alternative architectures may be necessary.
How does the noise performance of the AD8609ARU compare to bipolar-input op-amps in low-frequency signal conditioning?
With a noise density of 25nV/√Hz at 1kHz, the AD8609ARU offers better low-frequency noise characteristics than most bipolar-input op-amps, which typically exhibit 30–50nV/√Hz. Over a 0.1–10Hz bandwidth relevant to biomedical sensors, integrated noise drops to ~0.8µV RMS—significantly lower than comparable bipolar designs. This makes it ideal for ECG front-ends and strain gauge amplifiers where flicker noise dominates.
Is the AD8609ARU suitable for single-supply operation down to 1.8V with rail-to-rail output swing requirements?
While the AD8609ARU supports single-supply operation from 1.8V to 5V, its output does not achieve full rail-to-rail swing. Output high typically reaches V+−0.2V and output low approaches V−+0.1V. Therefore, with a 1.8V supply, available headroom is only 1.5V peak-to-peak, limiting dynamic range to ~75%. For true rail-to-rail performance at such low voltages, dedicated RRO op-amps should be considered instead.
What layout considerations are critical when implementing the AD8609ARU in mixed-signal PCB designs to maintain CMRR?
To preserve the 100dB CMRR, keep analog ground return paths separate from digital signals, use star grounding near the op-amp, and minimize trace lengths to input pins. Place decoupling capacitors within 5mm of V+ and V− pins using 0.1µF ceramic caps in parallel with 10µF tantalum. Guard rings around high-impedance nodes reduce leakage currents that degrade CMRR by introducing common-mode offsets.
How does quiescent current compare across the supply voltage range for the AD8609ARU, and what implications exist for battery life?
Although exact quiescent current isn’t listed, the low input bias current and moderate slew rate suggest operation around 1–2mA per amplifier at 3.3V. Assuming 1.5mA total consumption for all four channels, a CR2032 coin cell (225mAh) could support continuous operation for approximately 150 hours in duty-cycled mode (e.g., 1% ON time). Continuous operation would deplete it in under 100 hours, favoring intermittent-use applications.
Can the AD8609ARU be safely used in automotive environments meeting AEC-Q100 Grade 1 requirements?
While the AD8609ARU operates from -40°C to +125°C—matching AEC-Q100 Grade 1 temperature range—it is not officially qualified for automotive use. Its packaging (TSSOP-14) lacks automotive-grade reliability testing, including solder joint fatigue or humidity resistance validation. For production automotive systems, select ADI’s explicitly Q-qualified variants like ADA4898-2ARJZ-RL7.
What is the maximum allowable input overdrive before performance degradation occurs in the AD8609ARU?
The AD8609ARU tolerates up to ±0.5V input overdrive without latch-up or permanent damage. However, beyond ±0.2V, nonlinearities increase significantly—input capacitance changes cause peaking in transimpedance stages, and recovery time extends to microseconds. For precise measurements, limit inputs to ±0.1V of rails and use clamping diodes only if necessary, accounting for forward voltage drops that introduce offset shifts.
How does the common mode rejection ratio degrade at higher frequencies with the AD8609ARU?
CMRR typically decreases by 20–30dB/decade above 100kHz due to internal matching limitations. At 1MHz, CMRR may fall below 70dB, increasing susceptibility to EMI-induced errors in switching power supply monitoring. For applications requiring >80dB CMRR at 100kHz, ensure balanced differential routing and avoid nearby noisy traces; otherwise, consider instrumentation amplifiers with superior high-frequency CMRR performance.
What are the key differences between the AD8609ARU and the AD8608 when selecting between quad and dual-channel configurations?
The AD8609ARU provides four independent amplifiers in a single TSSOP-14 package versus two in the AD8608’s SOIC-8. Both share identical specs, but the ARU consumes slightly more board area and power. Use the ARU when space allows integration benefits; opt for AD8608 if pin count or thermal footprint must be minimized. Neither achieves rail-to-rail outputs, so verify output swing compatibility with your supply rails regardless of channel count.

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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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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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(Different time frame / countries / package size has different price.)

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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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
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Electrostatic Discharge Protection and Handling

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Analog Devices

AD8609ARU

Analog Devices
41D-AD8609ARU

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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