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 and AD623AR-REEL7 are functionally equivalent implementations of the same instrumentation amplifier, differing only in packaging format and shipment configuration. Both parts share identical electrical specifications, package type, and temperature range, making them interchangeable for design and production purposes. The primary distinction is the delivery format, which affects inventory handling and automated assembly workflows rather than circuit performance.
Amplifier Type and Channel Count
High match
Package Type and Pinout
High match
Electrical Specifications
High match
Packaging and Shipment 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 | AD623ARZ | AD623AR-REEL7 | Why it matters |
|---|---|---|---|
| Amplifier Type | Instrumentation Amplifier | Instrumentation Amplifier | Confirms both parts are the same functional amplifier type, ensuring circuit topology compatibility. |
| Number of Circuits | 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) | Operating voltage range must be compatible with the target system's power rails. |
| Gain Range | 1 to 1000 (set by external resistor) | 1 to 1000 (set by external resistor) | Gain flexibility determines suitability for the required signal amplification level. |
| Input Offset Voltage (max) | 200 µV | 200 µV | Offset voltage affects DC accuracy and measurement precision in the application. |
| Package / Case | 8-SOIC | 8-SOIC | Package footprint must match for physical PCB compatibility. |
| Mounting Type | Surface Mount | Surface Mount | Assembly method must be consistent with the manufacturing process. |
| Packaging | Tube | Tape & Reel | Packaging format affects handling and suitability for automated pick-and-place production lines. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range must cover the application's environmental conditions. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD623ARZ | 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 key differences between the AD623ARZ and AD623AR-REEL7?
Both parts are the same AD623 instrumentation amplifier die in an 8-lead SOIC package with identical electrical specifications. The difference is packaging format: AD623ARZ is supplied in tube/rail packaging, while AD623AR-REEL7 is supplied on a 7-inch tape-and-reel for automated assembly. The "Z" suffix on AD623ARZ denotes RoHS-compliant lead finish per Analog Devices nomenclature.
Are the AD623ARZ and AD623AR-REEL7 electrically and functionally interchangeable?
Yes. Both are the AD623AR grade (SOIC-8) with the same gain equation (G = 1 + 100 kΩ/RG), supply range of 2.7 V to 12 V single supply (or ±2.5 V to ±6 V dual supply), and specified performance. They differ only in shipping packaging, so they are interchangeable in the application circuit.
What package and pinout do the AD623ARZ and AD623AR-REEL7 use?
Both are offered in an 8-lead SOIC (R-8) package. The pinout is: 1 = RG, 2 = -IN, 3 = +IN, 4 = -VS, 5 = REF, 6 = OUTPUT, 7 = +VS, 8 = RG. The external gain resistor RG is connected between pins 1 and 8.
What supply voltage range and quiescent current apply to both parts?
Both devices operate from a single supply of 2.7 V to 12 V or a dual supply of ±2.5 V to ±6 V. Typical supply current is approximately 375 µA, and the amplifiers are specified for rail-to-rail output swing.
How is gain set on the AD623ARZ and AD623AR-REEL7?
Gain is programmed with a single external resistor RG between pins 1 and 8 using G = 1 + 100 kΩ/RG. With RG unconnected the gain defaults to 1; for G = 2, RG = 100 kΩ; for G = 100, RG = 1.01 kΩ; for G = 1000, RG = 100 Ω.
Which packaging option should be selected for production versus prototyping?
AD623AR-REEL7 (7-inch tape-and-reel) is intended for automated pick-and-place production lines. AD623ARZ (tube/rail) is typically used for prototyping, low-volume builds, or manual assembly where reels are not required. Both share the same SOIC-8 footprint and land pattern.
Do the AD623ARZ and AD623AR-REEL7 differ in temperature range or accuracy grade?
No. Both are the "A" grade specified over the -40°C to +85°C industrial temperature range with the same gain error, offset voltage, and CMRR specifications. Neither part carries a different accuracy grade; the suffix differences relate to packaging and RoHS compliance, not performance.
What are the moisture sensitivity and handling considerations for these SOIC-8 parts?
Both are supplied in an 8-lead SOIC package and should be handled per the moisture sensitivity level stated on the manufacturer's label and datasheet. Standard ESD precautions apply, and reels or tubes should be stored in the original moisture-barrier packaging until board mounting.