Part A
AD8630ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6520 Stückzahl
- Package
- SOIC-14
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Not a drop-in replacement
The AD8630ARZ and AD8632AR-REEL7 are not drop-in replacements for one another. The AD8630ARZ is a quad zero-drift operational amplifier in a 14-lead SOIC package, while the AD8632AR-REEL7 is a dual zero-drift operational amplifier in an 8-lead SOIC package. The differing channel count and package footprint prevent direct board-level substitution, and the two devices differ in supply voltage range and quiescent current characteristics. Designers must verify channel count, package footprint, and electrical specifications before considering any substitution.
Different channel count
Different footprint
Different supply range
Different quiescent current
Parts at a glance
Part B
AD8632AR-REEL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 9313 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 | AD8630ARZ | AD8632AR-REEL7 | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 4 (Quad) | 2 (Dual) | Channel count determines how many independent signal paths can be handled; a quad and a dual are not directly interchangeable in a given PCB layout. |
| Package / Mounting | 14-Lead SOIC (surface mount) | 8-Lead SOIC (surface mount) | Different package pin counts and footprints prevent drop-in substitution without a board redesign. |
| Supply Voltage Range | 2.7 V to 5.5 V (single supply) | 2.7 V to 5.5 V (single supply) | Both support the same low-voltage single-supply rails, so system power architecture compatibility is equivalent. |
| Input Offset Voltage (max) | 5 µV | 5 µV | Very low offset is critical for precision DC signal conditioning; matching offset specs supports similar accuracy performance. |
| Input Bias Current (typ) | ~30 pA | ~30 pA | Ultra-low bias current suits high-impedance sensor interfaces; equivalent values mean comparable loading on sensitive nodes. |
| Gain Bandwidth Product | 2.5 MHz | 2.5 MHz | GBW sets the achievable closed-loop bandwidth; identical values indicate similar dynamic response for filtering and buffering. |
| Supply Current per Amplifier (typ) | ~1.0 mA | ~1.0 mA | Quiescent current affects total power budget; matching per-amplifier draw keeps power consumption comparable per channel. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Industrial temperature range compatibility ensures both parts suit the same harsh-environment applications. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8630ARZ | AD8632AR-REEL7 |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | Zero-Drift | General Purpose |
| Number of Circuits | 4 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 1V/µs | 3V/µs |
| Gain Bandwidth Product | 2.5 MHz | 5 MHz |
| Current - Input Bias | 30 pA | 250 nA |
| Voltage - Input Offset | 1 µV | 800 µV |
| Supply Current | - | 300µA (x2 Channels) |
| Current - Output / Channel | 30 mA | 10 mA |
| Voltage - Supply Span(Min) | 2.7 V | 1.8 V |
| Voltage - Supply Span(Max) | 5 V | 6 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| -3 dB Bandwidth | 2.5 MHz | - |
Frequently asked questions
What are the key differences between the AD8630ARZ and AD8632AR-REEL7?
The AD8630ARZ is a quad zero-drift operational amplifier in a 14-lead SOIC package, while the AD8632AR-REEL7 is a dual zero-drift operational amplifier in an 8-lead SOIC package supplied on tape and reel. The AD8630 provides four amplifiers per package, whereas the AD8632 provides two. Both are members of the Analog Devices zero-drift amplifier family with rail-to-rail output, but they differ in channel count, package pin count, and packaging format.
Are the AD8630ARZ and AD8632AR-REEL7 pin-compatible?
No. The AD8630ARZ uses a 14-lead SOIC package for four amplifiers, and the AD8632AR-REEL7 uses an 8-lead SOIC package for two amplifiers. The pin counts and pin functions differ, so they are not drop-in replacements for each other on the same PCB footprint.
Do both parts share the same zero-drift amplifier architecture?
Yes. Both the AD8630 and AD8632 are zero-drift operational amplifiers that use auto-zeroing or chopper-stabilized techniques to achieve very low offset voltage and offset voltage drift. They are intended for precision DC and low-frequency applications where low offset and low drift are critical.
What supply voltage range do the AD8630ARZ and AD8632AR-REEL7 support?
Both devices are specified for operation from a single supply of 2.7 V to 5 V, or from dual supplies of ±1.35 V to ±2.5 V. Designers should confirm the exact limits in the respective Analog Devices datasheets before finalizing the power supply design.
Can the AD8632AR-REEL7 be used where an AD8630ARZ was specified, if only two amplifiers are needed?
Functionally, a dual AD8632 can replace two of the four amplifiers in an AD8630 design only if the PCB is redesigned for the 8-lead SOIC footprint and the unused amplifier channels in the original quad design are no longer required. The two parts are not footprint-compatible, so a direct board swap is not possible.
What packaging format does the AD8632AR-REEL7 use?
The AD8632AR-REEL7 is supplied in a 7-inch tape and reel format, which is suitable for automated pick-and-place assembly. The AD8630ARZ is typically supplied in tube or tray format depending on the ordering quantity; designers should verify the exact packaging option with the distributor or the Analog Devices datasheet.
Are both parts suitable for precision sensor signal conditioning?
Yes. Both the AD8630 and AD8632 are designed for precision signal conditioning where low offset voltage, low offset drift, and low input bias current are important. Typical applications include sensor interfaces, strain gauges, thermocouples, and other low-level DC signal paths. The choice between them depends primarily on channel count and board space.