Part A
AD623AR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7097 PCS
- Package
- SOIC-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD623AR and AD623AR-REEL7 are functionally identical instrumentation amplifiers sharing the same die, package, and electrical specifications; the only distinction is the packaging format, with the REEL7 variant supplied on tape and reel for automated assembly. Either part number can be used interchangeably in the same design, and selection should be driven solely by the production handling method required.
Amplifier Function and Topology
High match
Package Type and Pinout
High match
Electrical Specifications
High match
Packaging Format
Validation required
Parts at a glance
Part B
AD623AR-REEL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7017 PCS
- Package
- SOIC-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD623AR | AD623AR-REEL7 | Why it matters |
|---|---|---|---|
| Amplifier Type | Instrumentation Amplifier | Instrumentation Amplifier | Confirms both parts are the same functional amplifier type, so they are interchangeable in the same circuit role. |
| Number of Channels | 1 | 1 | Channel count must match for direct substitution in single-channel signal conditioning designs. |
| Supply Voltage Range | 2.7 V to 12 V (single supply); ±2.7 V to ±6 V (dual supply) | 2.7 V to 12 V (single supply); ±2.7 V to ±6 V (dual supply) | The supply range determines compatibility with the system power rails; identical ranges ensure the part can be dropped into the same rail configuration. |
| Gain Range | 1 to 1000 (set by external resistor) | 1 to 1000 (set by external resistor) | Gain flexibility via external resistor must match so the same gain-setting network works for both parts. |
| Input Offset Voltage (max) | 200 µV | 200 µV | Offset voltage affects DC accuracy; identical limits mean equivalent precision performance in the application. |
| Input Bias Current (max) | 25 nA | 25 nA | Bias current impacts error with high-impedance sources; matching values ensure the same source-impedance constraints apply. |
| Gain Bandwidth Product | 800 kHz (G = 1) | 800 kHz (G = 1) | Bandwidth determines the maximum signal frequency the amplifier can handle; identical values mean the same frequency response. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range must cover the application environment; matching ranges confirm equivalent environmental robustness. |
| Package / Mounting | 8-Lead SOIC (surface mount) | 8-Lead SOIC (surface mount) | Package and footprint must match for physical board compatibility; identical SOIC packages allow direct drop-in replacement. |
| Packaging / Delivery Form | Tube / cut tape (individual or small quantity) | Tape and reel (7-inch reel, 750 units) | Delivery form affects manufacturing handling and pick-and-place assembly; reel packaging suits automated high-volume production while tube suits prototyping. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD623AR | AD623AR-REEL7 |
|---|---|---|
| Part Status | Obsolete | Obsolete |
| Amplifier Type | Instrumentation | Instrumentation |
| Number of Circuits | 1 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 0.3V/µs | 0.3V/µs |
| -3 dB Bandwidth | 800 kHz | 800 kHz |
| Current - Input Bias | 17 nA | 17 nA |
| Voltage - Input Offset | 25 µV | 25 µV |
| Supply Current | 375µA | 375µA |
| Voltage - Supply Span(Min) | 2.7 V | 2.7 V |
| Voltage - Supply Span(Max) | 12 V | 12 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 AD623AR and AD623AR-REEL7?
Both parts are the same AD623 instrumentation amplifier in an 8-lead SOIC package (R suffix). The difference is packaging format: AD623AR is supplied in standard tube/tray packaging, while AD623AR-REEL7 is supplied on a 7-inch tape-and-reel for automated assembly. Electrical performance and die are identical.
Are AD623AR and AD623AR-REEL7 electrically and functionally interchangeable?
Yes. Both are the same AD623 model in the same 8-lead SOIC package with identical pinout and specified performance. They differ only in shipping packaging, so they are interchangeable in the assembled board.
What are the key specifications of the AD623?
The AD623 is a single-supply instrumentation amplifier with rail-to-rail output swing, gain set by a single external resistor (G = 1 to 1000), supply range of 2.7 V to 12 V (dual supplies of ±2.7 V to ±6 V), low offset voltage, and low power consumption. It is specified for operation over the industrial temperature range. Consult the Analog Devices datasheet for exact grade-specific limits.
Which package do AD623AR and AD623AR-REEL7 use?
Both use the 8-lead SOIC (R-8) package. The PCB land pattern and pinout are identical, so no layout change is needed when switching between them.
Why would a designer choose AD623AR-REEL7 over AD623AR?
AD623AR-REEL7 is provided on 7-inch tape-and-reel, which suits high-volume automated pick-and-place assembly and reel-fed production lines. AD623AR in tubes is typically used for prototyping, low-volume runs, or manual assembly.
Can AD623AR and AD623AR-REEL7 be mixed on the same production line?
Yes, from an electrical and footprint standpoint they are the same device. The only practical consideration is feeder setup: tape-and-reel (REEL7) versus tube packaging requires different handling equipment, but the placed component is identical.
Do AD623AR and AD623AR-REEL7 differ in temperature grade or accuracy grade?
No. The "AR" suffix denotes the same SOIC package and grade for both orderable part numbers; the "-REEL7" suffix only indicates 7-inch reel packaging. Grade and temperature specifications are determined by the base model, not the packaging suffix.