Part A
AD623AR
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 7097 PCS
- Package
- SOIC-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Replacement verdict
Compatible functional replacement candidate
The AD623AR and AD623AR-REEL are functionally identical instrumentation amplifiers from Analog Devices, differing only in packaging format. The AD623AR is supplied in tube packaging, while the AD623AR-REEL is supplied in tape-and-reel packaging for automated assembly. Both share the same die, electrical specifications, and SOIC-8 footprint, making them fully interchangeable in design and application.
Package Type
High match
Electrical Specifications
High match
Footprint
High match
Operating Temperature Range
High match
Parts at a glance
Part B
AD623AR-REEL
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 2974 PCS
- Package
- SOIC-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
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-REEL | Why it matters |
|---|---|---|---|
| Amplifier Type | Instrumentation Amplifier | Instrumentation Amplifier | Confirms both parts are the same functional device type, ensuring circuit topology compatibility. |
| Number of Channels | 1 | 1 | Single-channel configuration must match for direct board-level substitution. |
| Supply Voltage Range | 2.7 V to 12 V (single supply) | 2.7 V to 12 V (single supply) | Determines whether the part operates within the target system's power rails. |
| Gain Range | 1 to 1000 (set by external resistor) | 1 to 1000 (set by external resistor) | Gain flexibility must match to preserve signal scaling in the application. |
| Input Offset Voltage (max) | 200 µV | 200 µV | Offset directly affects DC accuracy and measurement precision. |
| Input Bias Current (max) | 25 nA | 25 nA | Bias current impacts error in high-impedance sensor interfaces. |
| Gain Bandwidth Product | 800 kHz (G = 1) | 800 kHz (G = 1) | Bandwidth limits the maximum signal frequency the amplifier can handle accurately. |
| Package / Mounting | 8-Lead SOIC (surface mount) | 8-Lead SOIC (surface mount) | Package and footprint must match for physical board compatibility. |
| Packaging / Delivery Form | Tube / cut tape (individual) | Tape and reel (13-inch reel) | Delivery format affects automated assembly line feeding and inventory handling, though the die is identical. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD623AR | AD623AR-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| 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-REEL?
The AD623AR and AD623AR-REEL are the same AD623 instrumentation amplifier die in the same 8-lead SOIC (R-8) package. The only difference is packaging format: AD623AR is supplied in tube/tray quantities, while AD623AR-REEL is supplied on tape-and-reel for automated assembly. Electrical and functional specifications are identical.
Are AD623AR and AD623AR-REEL electrically and functionally interchangeable?
Yes. Both parts share the same datasheet specifications for the AD623: single-supply or dual-supply operation, rail-to-rail output, gain set by a single external resistor, and the same 8-lead SOIC pinout. They differ only in shipping packaging, so they are interchangeable in a validated design.
What package do AD623AR and AD623AR-REEL use?
Both are offered in the 8-lead SOIC package (R-8 suffix). The AD623AR and AD623AR-REEL therefore share the same package outline, pin configuration, and PCB land pattern.
What is the supply voltage range of the AD623?
The AD623 operates from a single supply of 3 V to 12 V, or from dual supplies of ±2.5 V to ±6 V. This applies equally to the AD623AR and AD623AR-REEL, since they are the same device.
How is gain set on the AD623AR and AD623AR-REEL?
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). This applies to both the AD623AR and AD623AR-REEL.
Why would a designer choose AD623AR-REEL over AD623AR?
AD623AR-REEL is supplied on tape-and-reel, which is compatible with automated pick-and-place assembly lines and high-volume production. AD623AR in tubes is typically used for prototyping, low-volume runs, or manual assembly. The choice is purely a manufacturing/packaging decision.
Do AD623AR and AD623AR-REEL have the same operating temperature range?
Yes. Both are specified over the industrial temperature range of −40°C to +85°C, consistent with the AD623 datasheet for the R-8 package grade.