Part A
AD623ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4377 PCS
- Package
- SOIC-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD623ARZ-R7 and AD623ARZ are functionally equivalent instrumentation amplifiers sharing identical core specifications, with the -R7 suffix denoting tape-and-reel packaging rather than any electrical or performance difference. Either part number can be used interchangeably in the same circuit design, subject to the purchaser's preferred packaging format for automated assembly versus tube or tray handling.
Amplifier Function and Topology
High match
Package and Pinout
High match
Electrical Specifications
High match
Packaging Format
Validation required
Parts at a glance
Part B
AD623ARZ-R7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5853 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 | AD623ARZ-R7 | AD623ARZ | Why it matters |
|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Same manufacturer ensures identical design, process, and quality standards. |
| Amplifier Type | Instrumentation Amplifier | Instrumentation Amplifier | Confirms both parts serve the same functional role in a circuit. |
| Number of Circuits | 1 | 1 | Single-channel configuration must match for direct substitution. |
| Package / Case | 8-SOIC | 8-SOIC | Identical footprint allows drop-in replacement on the same PCB. |
| Mounting Type | Surface Mount | Surface Mount | Same mounting method is required for physical compatibility. |
| Supply Voltage Range | 2.7 V to 12 V | 2.7 V to 12 V | Matching supply range ensures the part works in the same power environment. |
| Gain Bandwidth Product | 800 kHz | 800 kHz | Determines achievable signal bandwidth and dynamic performance. |
| Input Offset Voltage (Max) | 200 µV | 200 µV | Offset directly affects DC accuracy of the amplification stage. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Same temperature rating ensures equivalent environmental robustness. |
| Packaging / Reel | Tape & Reel (R7, 7-inch reel) | Tube | Different packaging affects assembly line handling and inventory format, though the die is identical. |
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Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD623ARZ | AD623ARZ-R7 |
|---|---|---|
| Part Status | Active | Active |
| 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 AD623ARZ-R7 and AD623ARZ?
Both parts are the same AD623 instrumentation amplifier in an 8-lead SOIC package (R-8 suffix). The difference is packaging format: AD623ARZ-R7 is supplied in 7-inch reel packaging (typically 750 pieces per reel), while AD623ARZ is supplied in standard tube packaging. The electrical specifications and die are identical.
Are AD623ARZ-R7 and AD623ARZ electrically and functionally interchangeable?
Yes. Both variants share the same AD623 datasheet specifications, including gain range of 1 to 1000 set by a single external resistor, supply range of 2.7 V to 12 V, and rail-to-rail output swing. The only difference is the shipping container (reel vs. tube), so they are interchangeable in the application circuit.
What package do AD623ARZ-R7 and AD623ARZ use?
Both are offered in the 8-lead SOIC package (R-8), with an operating temperature range of -40°C to +85°C. The reel variant (AD623ARZ-R7) uses the same package and pinout as the tube variant (AD623ARZ).
How is the gain of the AD623ARZ and AD623ARZ-R7 set?
Gain is programmed with a single external resistor connected between the RG pins (pins 1 and 8). The gain equation is G = 1 + (100 kΩ / RG). With RG unconnected, the gain defaults to 1; gains up to 1000 are achievable with the appropriate resistor value.
What supply voltage range do AD623ARZ and AD623ARZ-R7 support?
Both parts operate from a single supply of 2.7 V to 12 V, or from dual supplies of ±2.7 V to ±6 V. They are specified for rail-to-rail output swing and can be used in single-supply signal conditioning applications.
Which variant should be selected for automated SMT assembly?
AD623ARZ-R7 is the reel-packaged option (7-inch reel), which is typically preferred for automated pick-and-place SMT production lines. AD623ARZ in tubes is generally used for prototyping, low-volume runs, or manual assembly.
Do AD623ARZ-R7 and AD623ARZ have the same input offset voltage and drift specifications?
Yes. Since both are the same AD623 model in the same R-8 package, they share the datasheet limits for input offset voltage (typically 200 µV maximum for the A grade) and offset voltage drift. Packaging format does not affect these parameters.