Part A
AD623ARZ-RL
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 2845 PCS
- Package
- SOIC-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Replacement verdict
Compatible functional replacement candidate
The AD623ARZ-RL and AD623AR-REEL are functionally equivalent instrumentation amplifiers sharing the same core die, electrical specifications, and SOIC-8 package; the only distinction is tape-and-reel packaging orientation and quantity, making them interchangeable for design and production purposes.
Amplifier Type and Channel Count
High match
Package and Pinout
High match
Supply Voltage and Gain Range
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 | AD623ARZ-RL | AD623AR-REEL | Why it matters |
|---|---|---|---|
| Amplifier Type | Instrumentation Amplifier | Instrumentation Amplifier | Both parts are single-supply instrumentation amplifiers, so the core function is identical for signal conditioning applications. |
| Number of Channels | 1 | 1 | Channel count determines how many independent signals can be amplified per package. |
| Supply Voltage Range | 2.7 V to 12 V (single supply) | 2.7 V to 12 V (single supply) | The supply range must match the system rail to ensure proper operation and output swing. |
| Gain Range | 1 to 1000 (set by external resistor) | 1 to 1000 (set by external resistor) | Programmable gain via a single external resistor allows flexible scaling of small differential signals. |
| Input Offset Voltage (max) | 200 µV | 200 µV | Offset voltage directly affects DC accuracy; lower offset improves precision in low-level signal measurement. |
| Input Bias Current (max) | 25 nA | 25 nA | Bias current interacts with source impedance and can introduce measurement error in high-impedance sensors. |
| Gain Bandwidth Product | 800 kHz (G = 1) | 800 kHz (G = 1) | Bandwidth limits the maximum signal frequency that can be amplified without significant attenuation. |
| Package / Mounting | 8-SOIC (surface mount) | 8-SOIC (surface mount) | Package and mounting style must match the PCB footprint for a drop-in replacement. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range must cover the application environment to guarantee specified performance. |
| Packaging / Delivery Form | Tape & Reel (RL) | Tape & Reel (REEL) | Both are reeled for automated assembly, but the ordering suffix and reel quantity differ, affecting procurement and inventory handling. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD623ARZ-RL | AD623AR-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| 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-REEL?
Both are ordering variants of the Analog Devices AD623, a single-supply, rail-to-rail instrumentation amplifier. The AD623ARZ-RL is supplied in a 7-inch reel with a 13-inch carrier and is RoHS-compliant (Z suffix), while the AD623AR-REEL is the standard reel packaging variant of the same AD623AR device.
Are the AD623ARZ-RL and AD623AR-REEL electrically identical?
Yes. Both variants use the same AD623 die and are specified with the same gain equation (G = 1 + 100 kΩ/RG), the same supply range (2.7 V to 12 V single supply, ±2.7 V to ±6 V dual supply), and the same 800 kHz bandwidth at G = 1. The only documented difference is the packaging/reel configuration and the RoHS compliance designation of the Z-suffix part.
What is the difference between the AD623ARZ-RL and AD623AR-REEL?
The primary difference is the reel format and RoHS status. The AD623ARZ-RL is the RoHS-compliant (Z) version supplied on a 7-inch reel with 13-inch carrier tape, while the AD623AR-REEL is the non-Z reel variant. Both are 8-lead SOIC packages with identical pinouts and electrical specifications.
Can the AD623ARZ-RL be used as a drop-in replacement for the AD623AR-REEL?
Yes, provided the design accepts the RoHS-compliant Z-suffix part. Both are 8-lead SOIC (R-8) packages with identical pin functions and electrical parameters, so PCB footprint and circuit behavior are unchanged. Verify the assembly's solder profile and RoHS compliance requirements before substituting.
What package do the AD623ARZ-RL and AD623AR-REEL use?
Both variants are supplied in the 8-lead SOIC package (Analog Devices R-8 suffix), with a body width of 3.90 mm and a lead pitch of 1.27 mm. The package outline and pin assignments are identical between the two ordering codes.
What are the key specifications of the AD623?
The AD623 is a rail-to-rail output instrumentation amplifier with a gain range of 1 to 1000 set by a single external resistor, a supply range of 2.7 V to 12 V single supply or ±2.7 V to ±6 V dual supply, 800 kHz bandwidth at G = 1, and a typical input offset voltage of 200 µV. It is specified over the −40 °C to +85 °C industrial temperature range.
How is gain set on the AD623ARZ-RL and AD623AR-REEL?
Gain is programmed identically on both variants using a single external resistor RG connected between the RG pins (pins 1 and 8), according to G = 1 + 100 kΩ/RG. For example, RG = 100 kΩ gives G = 2, and RG = 100 Ω gives G = 1001.
Which variant should be selected for a RoHS-compliant production build?
The AD623ARZ-RL should be selected because the Z suffix denotes RoHS compliance. The AD623AR-REEL is the non-Z reel variant and should be confirmed against the assembly's environmental compliance requirements before use in RoHS-restricted production.