Part A
AD623ARZ-RL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2845 PCS
- Package
- SOIC-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD623ARZ-RL and AD623AR-REEL7 are functionally equivalent instrumentation amplifiers sharing identical core specifications, differing only in packaging format and shipment quantity. Both parts are drop-in interchangeable for design and production purposes, with the AD623ARZ-RL supplied in tape-and-reel packaging and the AD623AR-REEL7 in a standard reel format.
Amplifier Type and Channel Count
High match
Package Type and Pinout
High match
Supply Voltage Range
High match
Operating Temperature Range
High match
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 | AD623ARZ-RL | AD623AR-REEL7 | Why it matters |
|---|---|---|---|
| Amplifier Type | Instrumentation Amplifier | Instrumentation Amplifier | Both parts must be the same amplifier type to be functionally substitutable in a circuit. |
| Number of Circuits | 1 | 1 | The channel count must match for the device to serve the same signal-conditioning role. |
| Supply Voltage Range | 2.7 V to 12 V (single supply) | 2.7 V to 12 V (single supply) | The supply range determines compatibility with the system power rail and must match for drop-in replacement. |
| Gain Range | 1 to 1000 (set by external resistor) | 1 to 1000 (set by external resistor) | Identical gain configurability ensures the same signal scaling behavior in the application. |
| Input Offset Voltage (max) | 200 µV | 200 µV | Offset voltage affects DC accuracy; matching values preserve measurement precision. |
| Gain Bandwidth Product | 800 kHz | 800 kHz | Bandwidth determines the maximum signal frequency the amplifier can handle accurately. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range must cover the application environment for reliable operation. |
| Package / Case | 8-SOIC | 8-SOIC | Package compatibility is essential for PCB footprint and assembly interchangeability. |
| Packaging / Reel Size | Tape & Reel (RL, 13-inch reel) | Tape & Reel (REEL7, 7-inch reel) | Reel size affects manufacturing handling and pick-and-place setup, though the parts are electrically identical. |
| Part Status / Lifecycle | Active | Obsolete / Not recommended for new designs | Lifecycle status impacts long-term availability and sourcing strategy for production. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD623ARZ-RL | AD623AR-REEL7 |
|---|---|---|
| Part Status | Active | 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 are the AD623ARZ-RL and AD623AR-REEL7?
Both are instrumentation amplifiers from Analog Devices based on the AD623, a single-supply, rail-to-rail output instrumentation amplifier. The AD623ARZ-RL and AD623AR-REEL7 are the same AD623AR device supplied in different packaging formats: the AD623ARZ-RL is supplied in a 13-inch reel with a specific reel quantity, while the AD623AR-REEL7 is supplied in a 7-inch reel. Both use the 8-lead SOIC package.
Are the AD623ARZ-RL and AD623AR-REEL7 electrically identical?
Yes. Both part numbers refer to the same AD623AR silicon in the same 8-lead SOIC (R-8) package. The difference is the shipping/reel format, not the electrical specifications. Gain is set by a single external resistor, and both share the same datasheet parameters for supply range, offset voltage, gain error, and bandwidth.
What is the difference between the AD623ARZ-RL and AD623AR-REEL7?
The primary difference is the reel size and the corresponding reel quantity used for automated assembly. The AD623ARZ-RL is packaged on a 13-inch reel, while the AD623AR-REEL7 is packaged on a 7-inch reel. The "Z" in AD623ARZ-RL denotes the RoHS-compliant lead-free finish, whereas the AD623AR-REEL7 designation reflects the 7-inch reel format. Both are the same AD623AR device in the 8-lead SOIC package.
Can the AD623ARZ-RL and AD623AR-REEL7 be used interchangeably in a design?
Yes, from an electrical and footprint standpoint they are interchangeable because both are the AD623AR in the 8-lead SOIC package. The choice between them is driven by assembly line reel-size requirements and RoHS compliance needs, not by circuit performance. Designers should confirm the reel quantity and finish required by their contract manufacturer.
What package do the AD623ARZ-RL and AD623AR-REEL7 use?
Both parts are supplied in the 8-lead SOIC package (Analog Devices package code R-8). The pinout and land pattern are identical, so a PCB designed for one will accept the other without layout changes.
Do the AD623ARZ-RL and AD623AR-REEL7 differ in RoHS compliance?
The AD623ARZ-RL carries the "Z" suffix, which indicates a RoHS-compliant, lead-free finish per Analog Devices ordering conventions. The AD623AR-REEL7 designation reflects the 7-inch reel format; buyers should verify the specific finish and RoHS status against the manufacturer's ordering guide and the distributor's compliance data for the exact part number ordered.
How is gain set on the AD623ARZ-RL and AD623AR-REEL7?
On both parts, gain is programmed with a single external resistor connected between the RG pins (pins 1 and 8). The datasheet gain equation is G = 1 + (100 kΩ / RG). Because both part numbers are the same AD623AR die, the gain-setting resistor and equation are identical.
What supply voltage range do the AD623ARZ-RL and AD623AR-REEL7 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, per the AD623 datasheet. The rail-to-rail output stage allows the output to swing close to the supply rails, which is why the device is suited to low-voltage single-supply signal conditioning.