Part A
AD629ARZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 6804 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 AD629ARZ and AD629AR-REEL are functionally equivalent implementations of the same AD629 high common-mode voltage difference amplifier, differing only in packaging format and shipment configuration. Both parts share identical electrical specifications, die, and package type, making them interchangeable for design and qualification purposes; the selection between them is driven solely by production handling and inventory preferences rather than functional substitutability.
Amplifier Function and Topology
High match
Electrical Specifications
High match
Package Type and Pinout
High match
Shipping and Packaging Format
Validation required
Parts at a glance
Part B
AD629AR-REEL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 9883 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 | AD629ARZ | AD629AR-REEL | Why it matters |
|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Same manufacturer ensures identical design, process, and quality standards. |
| Amplifier Type | Difference Amplifier | Difference Amplifier | Confirms both parts serve the same circuit function (high common-mode voltage difference amplification). |
| Number of Circuits | 1 | 1 | Single-channel configuration must match for direct board-level substitution. |
| Package / Case | 8-SOIC | 8-SOIC | Identical footprint and pinout allow drop-in replacement on the same PCB. |
| Mounting Type | Surface Mount | Surface Mount | Same assembly method is required for physical compatibility. |
| Supply Voltage Range | ±2.5 V to ±18 V (dual) | ±2.5 V to ±18 V (dual) | Matching supply range ensures the part operates correctly in the target power rail design. |
| Gain | 1 V/V (fixed) | 1 V/V (fixed) | Fixed unity gain determines the transfer function; identical gain preserves signal scaling. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Same temperature rating ensures equivalent environmental robustness. |
| Packaging / Delivery Form | Tube / cut tape (individual) | Tape & Reel | Delivery format affects automated assembly line compatibility and inventory handling, though the die is identical. |
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Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD629ARZ | AD629AR-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Amplifier Type | Differential | Differential |
| Number of Circuits | 1 | 1 |
| Slew Rate | 2.1V/µs | 2.1V/µs |
| -3 dB Bandwidth | 500 kHz | 500 kHz |
| Voltage - Input Offset | 200 µV | 200 µV |
| Supply Current | 900µA | 900µA |
| Current - Output / Channel | 25 mA | 25 mA |
| Voltage - Supply Span(Min) | 5 V | 5 V |
| Voltage - Supply Span(Max) | 36 V | 36 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between AD629ARZ and AD629AR-REEL?
Both parts are the same AD629 high common-mode voltage difference amplifier die in an 8-lead SOIC package. The AD629ARZ is supplied in tube packaging, while AD629AR-REEL is supplied in tape-and-reel packaging for automated assembly. The electrical specifications are identical; only the packaging and ordering quantity differ.
Are AD629ARZ and AD629AR-REEL electrically interchangeable?
Yes. Both are the same AD629AR grade device in the same 8-lead SOIC (R-8) package, so they are electrically and functionally interchangeable. The only difference is the shipping container (tube vs. tape-and-reel).
What is the common-mode voltage range of the AD629?
The AD629 is designed to handle common-mode voltages up to ±270 V with a supply of ±15 V, while maintaining a fixed gain of 1. This high common-mode range is achieved through an internal resistor network that attenuates the input before amplification.
What is the fixed gain of the AD629ARZ and AD629AR-REEL?
Both devices provide a fixed gain of 1 V/V. The gain is set by an internal precision resistor network and cannot be externally adjusted.
What package do AD629ARZ and AD629AR-REEL use?
Both parts are offered in an 8-lead SOIC package (R-8 suffix). The AD629ARZ is supplied in tubes, and the AD629AR-REEL is supplied on tape-and-reel. The package footprint and pinout are identical.
Can AD629AR-REEL be used in the same PCB footprint as AD629ARZ?
Yes. Because both parts use the same 8-lead SOIC package with identical pinout, the PCB land pattern is the same. The choice between them depends only on the assembly method (manual/tube vs. automated pick-and-place reel).
What are the typical supply voltage requirements for the AD629?
The AD629 operates from dual supplies, typically ±15 V, and is specified for operation over a supply range of ±2.5 V to ±18 V. Both AD629ARZ and AD629AR-REEL share these supply requirements.
Which part should be selected for high-volume automated assembly?
AD629AR-REEL is the appropriate choice for high-volume automated pick-and-place assembly because it is supplied on tape-and-reel. AD629ARZ in tubes is typically used for low-volume, prototyping, or manual assembly.