Part A
AD8630ARUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3727 PCS
- Package
- TSSOP-14
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8630ARUZ and AD8632ARM-REEL are both zero-drift, rail-to-rail operational amplifiers from Analog Devices, but they differ in channel count, package footprint, and supply voltage range. The AD8630ARUZ is a quad device in a TSSOP-14 package, while the AD8632ARM-REEL is a dual device in an MSOP-8 package. Because the channel count and package are not interchangeable, a direct drop-in replacement is not possible; however, the two parts share closely matched electrical characteristics, making the AD8632ARM-REEL a viable functional substitute only where a dual amplifier in a smaller footprint is acceptable and the board layout is redesigned accordingly.
Channel Count
Not compatible
Package Type
Not compatible
Supply Voltage Range
High match
Input Offset Voltage
High match
Parts at a glance
Part B
AD8632ARM-REEL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7415 PCS
- Package
- TSSOP-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 | AD8630ARUZ | AD8632ARM-REEL | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 4 (Quad) | 2 (Dual) | Channel count determines how many independent signal paths can be processed in one package; a quad cannot directly replace a dual in a board designed for two channels without layout changes. |
| Package / Mounting | 14-Lead TSSOP | 8-Lead MSOP | Different package footprints and pin counts are not drop-in compatible; the PCB land pattern must match the package for the part to be soldered and routed correctly. |
| Supply Voltage Range | 2.7 V to 5 V (single supply) | 2.7 V to 5 V (single supply) | Both operate over the same low-voltage single-supply range, so system power rails are compatible between the two parts. |
| Input Offset Voltage (max) | 5 µV | 5 µV | Very low offset voltage is critical for precision DC signal conditioning; matching offset specs means both provide comparable accuracy in high-gain or sensor-interface circuits. |
| Input Bias Current (typ) | ~30 pA (at 25°C) | ~30 pA (at 25°C) | Ultra-low input bias current minimizes errors in high-impedance sensor and photodiode circuits; equivalent values indicate similar performance in these applications. |
| Gain Bandwidth Product | 2.5 MHz | 2.5 MHz | GBW sets the achievable closed-loop bandwidth and settling behavior; identical values mean comparable AC performance for filtering and buffering. |
| Input Voltage Noise Density | ~22 nV/√Hz (at 1 kHz) | ~22 nV/√Hz (at 1 kHz) | Noise density affects the signal-to-noise ratio in low-level signal chains; matching noise performance supports equivalent precision in sensitive front-ends. |
| Quiescent Current per Amplifier | ~1.0 mA (typ per amp) | ~1.0 mA (typ per amp) | Supply current per amplifier influences total power budget; equivalent per-amp current means power consumption scales mainly with channel count. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | Industrial temperature range ensures reliable operation in harsh environments; identical ratings mean both suit the same 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 | AD8630ARUZ | AD8632ARM-REEL |
|---|---|---|
| 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 AD8630ARUZ and AD8632ARM-REEL?
The AD8630ARUZ is a quad zero-drift operational amplifier in a 14-lead TSSOP package, while the AD8632ARM-REEL is a dual zero-drift operational amplifier in an 8-lead MSOP package supplied on tape and reel. The primary differences are channel count (4 vs 2) and package type/footprint.
Are the AD8630ARUZ and AD8632ARM-REEL pin-compatible?
No. The AD8630ARUZ uses a 14-lead TSSOP package and the AD8632ARM-REEL uses an 8-lead MSOP package, so they have different pin counts and PCB land patterns and are not drop-in replacements for each other.
Do both parts share the same zero-drift amplifier architecture?
Yes. Both the AD8630 and AD8632 are zero-drift operational amplifiers from Analog Devices that use auto-zeroing/chopper-stabilized techniques to achieve very low offset voltage and offset drift, making them suitable for precision low-frequency signal conditioning.
Can the AD8632ARM-REEL be used where a quad AD8630ARUZ is specified?
Not directly. The AD8632ARM-REEL provides only two amplifiers versus four in the AD8630ARUZ, and the package footprint differs. A design change and validation against the datasheet are required before substitution.
What supply voltage range do these amplifiers support?
Both the AD8630 and AD8632 are specified for operation from a single supply of 2.7 V to 5 V (or equivalent dual supplies), per the Analog Devices datasheets, making them suitable for low-voltage precision systems.
Why is the AD8632ARM-REEL supplied in reel packaging?
The "-REEL" suffix indicates tape-and-reel packaging intended for automated high-volume SMT assembly, whereas the AD8630ARUZ is supplied in standard tube/tray packaging for the 14-lead TSSOP.
Are both parts suitable for low-offset precision applications?
Yes. Both the AD8630 and AD8632 are zero-drift amplifiers featuring very low input offset voltage and low offset drift over temperature, which makes them appropriate for precision sensor interfaces and low-frequency instrumentation.