Part A
AD623AR
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7097 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Replacement verdict
Compatible functional replacement candidate
The AD623ARZ-R7 and AD623AR are functionally equivalent instrumentation amplifiers sharing the same core die, package, and electrical specifications; the only distinction is the R7 tape-and-reel packaging format, making the AD623ARZ-R7 a suitable functional replacement for the AD623AR in automated assembly environments.
Amplifier Function
High match
Package Type
High match
Electrical Specifications
High match
Packaging Format
Validation required
Parts at a glance
Part B
AD623ARZ-R7
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 5853 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
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-R7 | AD623AR | Why it matters |
|---|---|---|---|
| Amplifier Type | Instrumentation Amplifier | Instrumentation Amplifier | Both are instrumentation amplifiers, so the core function is identical and they are functionally interchangeable. |
| 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) | Identical supply range ensures the part works in the same power rail conditions. |
| Gain Range | 1 to 1000 (set by external resistor) | 1 to 1000 (set by external resistor) | Same programmable gain range means the same external gain resistor network can be reused. |
| Input Offset Voltage (max) | 200 µV | 200 µV | Matching offset voltage ensures comparable DC accuracy in precision measurement circuits. |
| Gain Bandwidth Product | 800 kHz (G = 1) | 800 kHz (G = 1) | Identical bandwidth supports the same signal frequency range without redesign. |
| Package / Mounting | 8-SOIC, Surface Mount | 8-SOIC, Surface Mount | Same package and footprint allow drop-in replacement on the same PCB pad layout. |
| Packaging / Reel Option | Tape & Reel (R7, 750 units) | Tube / Bulk | Different packaging affects automated assembly handling and inventory form, though the die is the same. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Same temperature range ensures equivalent environmental robustness in the application. |
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 | AD623ARZ-R7 |
|---|---|---|
| Part Status | Obsolete | Active |
| 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-R7 and the AD623AR?
Both parts are instrumentation amplifiers from Analog Devices based on the same AD623 core. The primary difference is packaging and ordering format: the AD623AR is supplied in an 8-lead SOIC tube format, while the AD623ARZ-R7 is the RoHS-compliant (Z) version supplied in 7-inch tape-and-reel packaging for automated assembly. Electrical performance is identical between the two variants.
Are the AD623ARZ-R7 and AD623AR electrically interchangeable?
Yes. Both devices share the same AD623 die and the same 8-lead SOIC (R-8) package footprint, pinout, and specified electrical parameters, including gain range (1 to 1000 set by a single external resistor), supply range, and offset voltage. The difference is limited to RoHS compliance and shipping format, so they are functionally interchangeable in a given design.
Does the AD623ARZ-R7 meet RoHS requirements while the AD623AR does not?
The "Z" suffix in AD623ARZ-R7 denotes the RoHS-compliant version of the AD623 in the SOIC package. The AD623AR is the non-RoHS ordering code. Designs requiring RoHS compliance should specify the AD623ARZ-R7 or another Z-suffix variant.
What is the difference between the "-R7" suffix and the base AD623ARZ part number?
The "-R7" suffix indicates tape-and-reel packaging (7-inch reel) for the AD623ARZ. The base AD623ARZ is the same RoHS-compliant SOIC device, but ordering codes without the reel suffix are typically supplied in tube format. Both contain the identical AD623ARZ device.
Can the AD623ARZ-R7 be used as a drop-in replacement for the AD623AR on an existing PCB?
Yes, provided the board is designed for the 8-lead SOIC (R-8) package. Both parts share the same package, pinout, and electrical specifications, so no layout change is required. The substitution only affects RoHS status and assembly handling (tape-and-reel vs. tube).
What are the key specifications shared by the AD623ARZ-R7 and AD623AR?
Both are single-supply or dual-supply instrumentation amplifiers with rail-to-rail output, gain set from 1 to 1000 via one external resistor, low offset voltage, and operation from a single supply as low as 3 V (or dual supplies). They are specified for the industrial temperature range and are available in the 8-lead SOIC package. Consult the Analog Devices AD623 datasheet for exact guaranteed limits.
Which variant should be selected for high-volume automated assembly?
The AD623ARZ-R7 is preferable for high-volume automated placement because it is supplied in 7-inch tape-and-reel format, which is compatible with standard pick-and-place equipment. The AD623AR in tube format is better suited to low-volume or prototype assembly.