Part A
AD820ARZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7301 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Replacement verdict
Compatible functional replacement candidate
The AD820ARZ and AD820AR-REEL7 are functionally equivalent single-channel precision operational amplifiers from Analog Devices, differing only in packaging format (tube vs. tape-and-reel). Both share identical die, electrical specifications, and SOIC-8 footprint, making them interchangeable for design and qualification purposes; the choice between them is purely a matter of assembly and inventory handling preference.
Amplifier Core Specifications
High match
Package and Footprint
High match
Operating Temperature Range
High match
Packaging Format
High match
Parts at a glance
Part B
AD820AR-REEL7
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 8022 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD820ARZ | AD820AR-REEL7 | Why it matters |
|---|---|---|---|
| Amplifier Type | Single-supply, rail-to-rail output operational amplifier | Single-supply, rail-to-rail output operational amplifier | Confirms both parts are the same functional amplifier type, so they are direct substitutes in circuit design. |
| Number of Channels | 1 | 1 | Channel count must match for pin-compatible replacement in single-channel designs. |
| Supply Voltage Range | 4.5 V to 36 V (single supply); ±2.25 V to ±18 V (dual supply) | 4.5 V to 36 V (single supply); ±2.25 V to ±18 V (dual supply) | Identical supply range ensures the part operates correctly in the same power environment. |
| Input Offset Voltage (max) | 0.8 mV | 0.8 mV | Offset voltage affects DC accuracy; matching values mean equivalent precision performance. |
| Gain Bandwidth Product | 1.8 MHz | 1.8 MHz | Bandwidth determines signal frequency handling; identical values preserve AC performance. |
| Input Bias Current (typ) | 2 pA | 2 pA | Very low bias current suits high-impedance sensor interfaces; matching values keep input loading identical. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Same temperature rating ensures equivalent reliability across the application's environmental range. |
| Package / Mounting | 8-Lead SOIC (surface mount) | 8-Lead SOIC (surface mount) | Identical package and footprint allow drop-in board replacement without layout changes. |
| Packaging / Delivery Form | Tube | Tape & Reel (7-inch reel) | Delivery format differs; reel packaging suits automated high-volume assembly while tube suits prototyping or low-volume runs. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD820ARZ | AD820AR-REEL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Amplifier Type | J-FET | J-FET |
| Number of Circuits | 1 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 3V/µs | 3V/µs |
| Gain Bandwidth Product | 1.8 MHz | 1.8 MHz |
| -3 dB Bandwidth | 1.9 MHz | 1.9 MHz |
| Current - Input Bias | 2 pA | 2 pA |
| Voltage - Input Offset | 400 µV | 400 µV |
| Supply Current | 700µA | 700µA |
| Current - Output / Channel | 20 mA | 20 mA |
| Voltage - Supply Span(Min) | 5 V | 5 V |
| Voltage - Supply Span(Max) | 36 V | 36 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between AD820ARZ and AD820AR-REEL7?
Both are the same AD820 single operational amplifier die in an 8-lead SOIC package; the difference is packaging format. AD820ARZ is supplied in tube/tray packaging, while AD820AR-REEL7 is supplied on a 7-inch tape-and-reel for automated assembly. Electrical specifications are identical per the Analog Devices datasheet.
Are AD820ARZ and AD820AR-REEL7 electrically and functionally interchangeable?
Yes. Both share the same AD820 core: single-supply operation from 5 V to 36 V (or dual ±2.5 V to ±18 V), rail-to-rail output, and typical gain-bandwidth of 1.8 MHz. The only difference is the shipping container, so they are interchangeable in circuit design.
What package do AD820ARZ and AD820AR-REEL7 use?
Both are offered in an 8-lead SOIC (Small Outline Integrated Circuit) package, designated by the "R" suffix in the part number. The "Z" suffix in AD820ARZ indicates RoHS-compliant lead-free construction per Analog Devices ordering information.
Which part should be selected for high-volume automated PCB assembly?
AD820AR-REEL7 is the appropriate choice for automated pick-and-place lines because it is supplied on 7-inch tape-and-reel. AD820ARZ in tube packaging is typically used for prototyping, low-volume, or manual assembly.
Do AD820ARZ and AD820AR-REEL7 have the same operating temperature range?
Yes. Both are specified over the industrial temperature range of −40 °C to +85 °C, consistent with the AD820 datasheet for the A-grade SOIC version.
Are both parts RoHS compliant?
AD820ARZ carries the "Z" suffix, which Analog Devices uses to denote RoHS-compliant, lead-free packaging. AD820AR-REEL7 is also supplied in RoHS-compliant form per the manufacturer's ordering guide; confirm the specific reel label against the current datasheet before final qualification.
Can AD820ARZ and AD820AR-REEL7 be used in single-supply applications?
Yes. The AD820 operates from a single supply of 5 V to 36 V with rail-to-rail output swing, making both variants suitable for single-supply signal conditioning, active filtering, and sensor interface circuits.