Part A
AD623AR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7097 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The AD623BR-REEL7 is a higher-grade variant of the AD623AR within the same instrumentation amplifier family, sharing identical pinout, package, and core electrical architecture. The BR grade offers improved gain accuracy and offset specifications, making it a viable functional substitute where tighter precision is acceptable or beneficial, though designers should confirm that the enhanced specifications and reel packaging align with their production and performance requirements.
Package Type
High match
Pin Configuration
High match
Gain Accuracy Grade
Validation required
Supply Voltage Range
High match
Parts at a glance
Part B
AD623BR-REEL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2030 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
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 | AD623BR-REEL7 | Why it matters |
|---|---|---|---|
| Grade / Temperature Range | Industrial grade, -40°C to +85°C | Industrial grade, -40°C to +85°C | Both parts share the same industrial temperature range, so environmental tolerance is equivalent for substitutability. |
| Input Offset Voltage (max) | 200 µV (A grade) | 100 µV (B grade) | The B grade offers tighter offset, improving DC accuracy in precision instrumentation and low-level signal amplification. |
| Input Offset Voltage Drift (max) | 2 µV/°C | 1 µV/°C | Lower drift in the B grade maintains accuracy over temperature, critical for sensors operating across wide thermal swings. |
| Input Bias Current (max) | 25 nA | 25 nA | Identical bias current means both parts present the same loading to high-impedance sources. |
| Gain Error (max) | 0.10% (G=1) | 0.05% (G=1) | Tighter gain error in the B grade yields more accurate closed-loop amplification, reducing calibration needs. |
| CMRR (min, G=10) | 90 dB | 100 dB | Higher common-mode rejection in the B grade better suppresses noise and interference in bridge and differential sensing applications. |
| Supply Voltage Range | 2.7 V to 12 V (single), ±2.7 V to ±6 V (dual) | 2.7 V to 12 V (single), ±2.7 V to ±6 V (dual) | Identical supply flexibility allows either part to be used in the same power architecture without redesign. |
| Supply Current (max) | 575 µA | 575 µA | Same quiescent current means equivalent power budget impact for battery-powered and portable designs. |
| Package / Packaging | 8-Lead SOIC (tube) | 8-Lead SOIC (tape and reel, 7-inch) | Same package footprint enables drop-in substitution, but reel packaging affects automated assembly and inventory handling. |
| Gain Bandwidth Product | 800 kHz (G=1) | 800 kHz (G=1) | Identical bandwidth ensures the same dynamic response and signal fidelity for a given gain setting. |
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 | AD623AR | AD623BR-REEL7 |
|---|---|---|
| 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 are the main differences between the AD623AR and AD623BR-REEL7?
Both are AD623 instrumentation amplifiers from Analog Devices in an 8-lead SOIC package. The primary difference is the grade: the AD623AR is the standard grade, while the AD623BR is the higher-grade version with tighter specifications, notably lower offset voltage and offset voltage drift. The AD623BR-REEL7 is supplied in tape-and-reel packaging for automated assembly, whereas the AD623AR is typically supplied in tube packaging.
Are the AD623AR and AD623BR-REEL7 pin-compatible?
Yes. Both devices are offered in the same 8-lead SOIC (R-8) package with identical pin functions, so they are pin-compatible and share the same PCB land pattern.
How do the offset voltage specifications compare between the two grades?
The AD623BR grade specifies a lower maximum input offset voltage than the AD623AR grade. The B grade is therefore preferable in applications where DC precision is critical. Designers should confirm the exact limits against the current Analog Devices datasheet for the specific grade.
Can the AD623AR be replaced by the AD623BR-REEL7 in an existing design?
Because the two parts are pin-compatible and functionally identical, the AD623BR-REEL7 can generally be used where an AD623AR was specified, and it offers tighter precision. However, the substitution should be validated against the datasheet limits and the design's accuracy requirements before production release.
What is the difference in packaging between the AD623AR and AD623BR-REEL7?
The AD623AR is supplied in standard tube packaging, while the AD623BR-REEL7 is supplied in tape-and-reel format (the "REEL7" suffix indicates 7-inch reel). Tape-and-reel packaging is intended for high-volume automated pick-and-place assembly.
Do both parts share the same supply voltage and gain configuration?
Yes. Both the AD623AR and AD623BR-REEL7 are single-supply instrumentation amplifiers with the same supply range and the same external resistor gain-setting scheme, so gain configuration is identical between the two grades.
Which grade should be selected for high-volume production?
The AD623BR-REEL7 is typically selected for high-volume production because its tape-and-reel packaging supports automated assembly and its tighter specifications reduce the need for calibration. The AD623AR remains suitable for lower-volume or less precision-critical applications.