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-R2 are both zero-drift, rail-to-rail operational amplifiers from Analog Devices, sharing the same core amplifier architecture and similar electrical characteristics. However, they differ in channel count and package type, so the AD8632ARM-R2 is a viable functional substitute only when a single-channel device in an MSOP package is acceptable for the target design. Designers should verify pinout, board footprint, and channel requirements before committing to the substitution.
Channel Count
Validation required
Package Type
Validation required
Amplifier Architecture
High match
Supply Voltage Range
High match
Parts at a glance
Part B
AD8632ARM-R2
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 9799 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-R2 | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 4 (Quad) | 2 (Dual) | Channel count determines how many independent signal paths can be processed; a quad and a dual are not directly interchangeable in multi-channel designs. |
| Package / Mounting | 14-Lead TSSOP (Surface Mount) | 8-Lead MSOP (Surface Mount) | Different package footprints and pin counts require different PCB layouts, so they cannot be dropped into the same board location. |
| Input Offset Voltage (Max) | 5 µV | 5 µV | Low offset voltage is critical for precision DC signal conditioning; matching values indicate comparable accuracy performance. |
| Input Bias Current (Typ) | ~30 pA | ~30 pA | Very low input bias current suits high-impedance sensor interfaces; equivalent values mean similar loading effects on sensitive nodes. |
| Gain Bandwidth Product | 2.5 MHz | 2.5 MHz | GBW sets the achievable closed-loop bandwidth and settling behavior; identical values indicate comparable AC signal handling. |
| Supply Voltage Range | 2.7 V to 5.5 V (single) / ±1.35 V to ±2.75 V (dual) | 2.7 V to 5.5 V (single) / ±1.35 V to ±2.75 V (dual) | Compatible supply ranges allow operation from the same rails, which is essential for direct substitution in a given system. |
| Quiescent Current per Amplifier (Typ) | ~1.0 mA | ~1.0 mA | Supply current affects power budget and thermal design; matching per-amplifier current means similar power consumption scaling. |
| Input Voltage Noise Density | ~22 nV/√Hz | ~22 nV/√Hz | Noise density impacts the achievable signal-to-noise ratio in low-level signal chains; equivalent values indicate comparable noise performance. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Industrial temperature range ensures reliable operation across harsh environments; identical ratings support use in the same applications. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8630ARUZ | AD8632ARM-R2 |
|---|---|---|
| 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-R2?
The AD8630ARUZ is a quad zero-drift operational amplifier in a 14-lead TSSOP package, while the AD8632ARM-R2 is a dual zero-drift operational amplifier in an 8-lead MSOP package. The AD8630ARUZ provides four amplifiers per package, whereas the AD8632ARM-R2 provides two. Both are members of the Analog Devices AD863x zero-drift family, but they differ in channel count, package type, and pin configuration.
Are the AD8630ARUZ and AD8632ARM-R2 pin-compatible?
No. The AD8630ARUZ uses a 14-lead TSSOP package with four amplifiers, and the AD8632ARM-R2 uses an 8-lead MSOP package with two amplifiers. The package footprints, pin counts, and pin functions differ, so they are not pin-compatible and cannot be interchanged on the same PCB land pattern without redesign.
Do the AD8630ARUZ and AD8632ARM-R2 share the same amplifier core specifications?
Both devices are zero-drift, rail-to-rail output operational amplifiers from the Analog Devices AD863x family and share the same core amplifier architecture. However, because they differ in channel count and package, designers should verify supply voltage range, offset voltage, input bias current, and bandwidth against the respective manufacturer datasheets before substituting one for the other in a design.
Can the AD8632ARM-R2 be used as a substitute for the AD8630ARUZ in an existing design?
Not as a direct drop-in replacement. The AD8632ARM-R2 has only two amplifiers versus four in the AD8630ARUZ, and its 8-lead MSOP footprint differs from the 14-lead TSSOP footprint of the AD8630ARUZ. A substitution would require a PCB redesign and verification that two amplifiers are sufficient for the application.
What package types do the AD8630ARUZ and AD8632ARM-R2 use?
The AD8630ARUZ is supplied in a 14-lead TSSOP package, and the AD8632ARM-R2 is supplied in an 8-lead MSOP package. Package selection affects board space, thermal behavior, and assembly processes, so the choice between the two depends on channel count requirements and PCB layout constraints.
Are both the AD8630ARUZ and AD8632ARM-R2 zero-drift amplifiers?
Yes. Both the AD8630ARUZ and AD8632ARM-R2 belong to the Analog Devices AD863x zero-drift operational amplifier family, which is designed for low offset voltage and low offset voltage drift over temperature. Designers should consult the respective datasheets for the exact offset voltage and drift specifications of each part.
Which part should be selected for a design requiring four amplifiers in a single package?
The AD8630ARUZ should be selected when four zero-drift amplifiers are required in one package, since it is a quad device in a 14-lead TSSOP. The AD8632ARM-R2 is a dual device and would require two packages to provide four amplifiers, increasing board area and component count.