AD620ANZ - 1-Channel Low-Power Instrumentation Amplifier | Analog Devices
MPN: AD620ANZ ✗ انتهى عمره الإنتاجيAD620ANZ نظرة عامة
An instrumentation amplifier is a specialized analog amplifier optimized for measuring a small differential signal embedded in a larger common-mode voltage. Its internal subtractor, input buffers, and feedback network provide high input impedance, common-mode rejection, and gain accuracy while reducing the number of precision external components. The AD620 belongs to the broader signal-conditioning and amplifier hierarchy and is commonly placed between sensors and analog-to-digital converters, where accurate amplification is required before sampling.
The verified manufacturer and distributor information identifies the AD620 as supporting gains from 1 to 10,000, 1 MHz bandwidth, and low-power operation. The AD620ANZ is supplied in an 8-lead PDIP package, while the AD620 family is also offered in 8-lead SOIC packaging. The single-external-resistor gain-setting arrangement allows the same device family to serve both low-gain buffering and high-gain sensor applications. The device is intended for systems where low cost and low power are important without sacrificing the basic precision expected from an instrumentation amplifier.
A typical circuit accepts differential sensor outputs at the input pins, uses an external gain resistor between the gain-setting pins, and drives an analog-to-digital converter or measurement subsystem. Proper layout is important because high-impedance input nodes should be kept short, clean, and away from high-current switching paths. The supply rails and bypass capacitors should be placed close to the device, while the gain resistor should be positioned according to the manufacturer’s recommended layout. The verified data does not provide complete electrical limits, pin names, temperature ratings, or supply-voltage values, so those parameters are marked as data needed rather than inferred.
Typical applications include bridge and pressure sensor interfaces, biomedical signal acquisition, current measurement, portable instrumentation, and precision data-acquisition systems. The AD620ANZ is particularly suitable where the measured differential signal is small and the surrounding system includes meaningful common-mode voltage. Compared with a discrete three-op-amp implementation, the integrated instrumentation amplifier reduces board area and component count while providing a defined gain-setting method. The manufacturer product page and distributor listings are the primary sources for this component overview; use the manufacturer datasheet for complete electrical characteristics, pinout, and application limits.
This product page combines verified manufacturer and distributor information with practical application guidance and source-linked buying context. It does not infer unprovided electrical values, package dimensions, lifecycle claims, or pricing amounts. For an exact replacement, verify the manufacturer pinout, supply range, gain equation, common-mode range, output swing, temperature grade, and availability before substituting any part.
بدائل مباشرة لـ AD620ANZ — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع AD620ANZ (نفس عامل الشكل والبصمة) — يختلف في Package, Gain Range, Product Type, Input Bias Current, Input Bias Current (max).
AD620ACHIP
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
AD620ARZ
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←AD620ARMZ
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
AD620ANZ الحدود القصوى والخصائص الكهربائية
| Product Type | Low-cost, low-power, high-accuracy instrumentation amplifier |
| Number of Channels | 1 channel |
| Gain Range | 1 to 10,000 |
| External Gain Setting | One external resistor |
| Gain-Bandwidth Product | 1 MHz |
| Maximum Supply Current | 1.3 mA |
| Input Bias Current | 2 nA |
| Common-Mode Rejection | 110 dB |
| العلبة | 8-lead PDIP |
| Package Family | PDIP family, through-hole DIP |
| نوع التركيب | Through-hole |
| حالة RoHS | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
| Applications | Precision data acquisition, sensor conditioning, portable instrumentation |
دليل تكوين أطراف AD620ANZ pdip family, through-hole dip
تكوين الأطراف لـ AD620ANZ (حزمة pdip family, through-hole dip). يتميز هذا المكوّن التناظري بأطراف الإدخال والإخراج وإمداد الطاقة. راجع ورقة بيانات الشركة المصنعة لتكوينات طرف إلغاء الإزاحة والتعويض والتمكين. مثالي لدوائر تكييف الإشارة والمضخمات.
لا تتوفر بيانات مفصلة لمخطط التوصيلات لـ AD620ANZ.
راجع ورقة البيانات للحصول على تكوين الأطراف الكامل.
التطبيقات النموذجية
AD620ANZ مناسب لـ 6 التطبيقs: Precision Bridge Sensor Conditioning, Biomedical Signal Acquisition, Battery-Powered Remote Instrumentation, Industrial Pressure and Load Measurement, Current and Voltage Measurement Front Ends, Portable Data-Acquisition Systems.
Precision Bridge Sensor Conditioning
The AD620ANZ fits bridge-based pressure, load, and strain sensors because its instrumentation-amplifier architecture amplifies a small differential signal while rejecting common-mode voltage. Its verified gain range of 1 to 10,000 allows the same one-channel device to cover both millivolt-level sensor outputs and larger differential signals. Place the bridge and AD620ANZ in a quiet analog section, keep input traces short, and select the gain resistor only after checking the sensor excitation, common-mode range, output swing, and ADC input range. The 1 MHz bandwidth supports precision data-acquisition systems while the 1.3 mA maximum supply current helps limit power in distributed measurement nodes.
موصى به
Biomedical Signal Acquisition
The AD620ANZ is suitable for low-level biomedical and physiological signal conditioning when the source is differential and requires accurate gain control. Its high input impedance helps avoid loading the sensor, while the instrumentation-amplifier topology provides common-mode rejection before an ADC samples the signal. The verified maximum supply current of 1.3 mA is attractive for portable or battery-powered monitoring equipment. Designers must still verify input bias current, noise density, common-mode limits, output swing, safety requirements, and electrode-specific protection because those values are not included in the supplied data.
موصى به
Battery-Powered Remote Instrumentation
The AD620ANZ is well suited to portable measurement systems because the verified AD620 family specification identifies only 1.3 mA maximum supply current. The device can amplify a sensor differential output close to the source, reducing the likelihood that long cable paths and downstream noise dominate a low-level measurement. Its 1 to 10,000 gain range supports multiple transducer sensitivities, while the one-resistor configuration simplifies field replacement. For remote nodes, verify supply voltage, quiescent current across temperature, input protection, EMI susceptibility, and the exact AD620ANZ package before finalizing the power budget.
موصى به
Industrial Pressure and Load Measurement
AD620ANZ can condition outputs from industrial pressure, force, and load-cell sensors where a weak differential signal appears over a substantial common-mode voltage. The integrated instrumentation amplifier reduces the number of external precision components compared with a discrete differential amplifier implementation and supports gain adjustment from 1 to 10,000. The 1 MHz bandwidth is useful for many sensor signals, but the selected gain must preserve sufficient closed-loop bandwidth for the measurement system. Confirm the sensor excitation, AD620ANZ common-mode range, output swing, supply rails, noise, and temperature requirements from the full manufacturer datasheet.
موصى به
Current and Voltage Measurement Front Ends
The AD620ANZ can amplify differential outputs from current shunts, buffered dividers, and precision sensing bridges before conversion by an ADC or measurement instrument. Its high-input-impedance instrumentation topology helps preserve the source signal, and the external resistor provides a straightforward way to establish gain. In this application, verify the maximum input differential voltage, input common-mode range, output offset, noise, and output-drive capability. Keep shunt connections and high-gain resistor nodes compact because long PCB traces can introduce errors that are significant compared with the small sensor signal.
موصى به
Portable Data-Acquisition Systems
The AD620ANZ supports portable and bench data-acquisition systems that need accurate differential amplification without a large discrete analog front end. Gains from 1 to 10,000 allow the same instrumentation amplifier to serve multiple sensor ranges, and the 1.3 mA maximum supply current is valuable in compact systems. The 8-lead PDIP package is convenient for prototyping through-hole assemblies and educational instrumentation. A production design should confirm the supply range, common-mode limits, noise, offset, operating temperature, package dimensions, and lifecycle status using the official Analog Devices documentation.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ AD620ANZ — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | AD620ACHIP | AD620AR | AD620ARMZ |
|---|---|---|---|---|
| Product Type | Instrumentation amplifier | AD620-family instrumentation amplifier | AD620-family instrumentation amplifier | AD620-family instrumentation amplifier |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 8-lead PDIP | 8-lead PDIP | 8-lead PDIP | 8-lead PDIP |
أبرز الفروقات
- High programmable gain range (مقابلAD620ACHIP)
- Low-power operation for portable measurement (مقابلAD620AR)
- Signal bandwidth for precision acquisition (مقابلAD620ARMZ)
- Single-resistor gain setting (مقابلAD620AR)
ملاحظات التصميم
Keep the AD620ANZ input traces short, matched where practical, and separated from switching nodes, digital clocks, power inductors, and high-current return paths. Place the external gain resistor close to the gain-setting pins and follow the manufacturer’s recommended layout. Because this is a high-impedance instrumentation front end, even a small amount of parasitic capacitance or leakage can affect signal integrity at higher gains. Verify the final PCB against the complete AD620 datasheet and the selected sensor’s wiring and grounding requirements.
Design the supply rails and bypass network from the complete AD620ANZ electrical limits rather than assuming that a nominal sensor supply is valid. The verified data identifies a maximum supply current of 1.3 mA, but it does not provide the supply-voltage range, quiescent-current curve, output swing, or input common-mode range. Confirm those values, then place decoupling capacitors close to the supply pins and provide a clean return path to avoid injecting supply ripple into the small differential signal.
Choose the gain resistor and closed-loop gain together with the required measurement bandwidth. AD620ANZ is verified at 1 MHz bandwidth and supports gains up to 10,000, but higher gain reduces usable bandwidth and can increase sensitivity to layout capacitance, noise, and output-loading effects. Check the sensor full-scale output against ADC range, confirm output headroom, and use the complete gain equation from the manufacturer datasheet before selecting the resistor value.
Do not substitute an AD620-family ordering code solely because the package name appears similar. The verified cross-reference results list AD620ACHIP and AD620AR as alternatives, but the supplied material does not quantify supply range, temperature grade, common-mode range, offset, or exact pin compatibility for each part. Before replacing AD620ANZ, compare the official datasheets and confirm pin names, gain equation, supply rails, output swing, package dimensions, and lifecycle status.
معلومات الامتثال
The supplied verified data does not provide RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements. The AD620 is an analog instrumentation amplifier rather than an automotive-qualified device in the supplied data, so AEC-Q100 is marked not_applicable. Compliance must be confirmed from the current Analog Devices product documentation and the exact orderable part.
