Part A
AD8042AR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4001 PCS
- Package
- SOIC-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8042AR and AD8042AR-REEL are functionally identical dual operational amplifiers from Analog Devices, differing only in packaging format. The AD8042AR is supplied in tube packaging, while the AD8042AR-REEL is supplied in tape-and-reel packaging for automated assembly. Both parts share the same die, electrical specifications, and 8-lead SOIC footprint, making them interchangeable for design purposes. The choice between them is purely a matter of manufacturing and procurement preference.
Package Type
High match
Electrical Specifications
High match
Pin Configuration
High match
Packaging Format
High match
Parts at a glance
Part B
AD8042AR-REEL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7334 PCS
- Package
- SOIC-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 | AD8042AR | AD8042AR-REEL | Why it matters |
|---|---|---|---|
| Amplifier Type | Voltage Feedback | Voltage Feedback | Both parts use the same voltage-feedback topology, so the feedback network and compensation behavior are interchangeable. |
| Number of Channels | 2 | 2 | Dual-channel configuration must match for pinout and circuit topology compatibility. |
| Gain Bandwidth Product | 160 MHz | 160 MHz | GBW determines the maximum usable signal frequency and closed-loop bandwidth; identical values ensure equivalent AC performance. |
| Slew Rate | 225 V/µs | 225 V/µs | Slew rate limits large-signal transient response; matching values preserve pulse and step-response behavior. |
| Input Offset Voltage (max) | 6 mV | 6 mV | Offset voltage affects DC accuracy; identical limits mean the same error budget applies to both parts. |
| Supply Voltage Range | 3 V to 12 V | 3 V to 12 V | The operating supply window must match to ensure the part works in the same rail configuration. |
| Supply Current per Amplifier | 6.5 mA | 6.5 mA | Quiescent current impacts power budget and thermal design; identical values keep power consumption unchanged. |
| Package / Mounting | 8-SOIC, Surface Mount | 8-SOIC, Surface Mount | Same package and mounting style guarantee drop-in PCB footprint compatibility. |
| Packaging / Delivery Form | Tube | Tape & Reel | Delivery form differs for automated assembly versus manual handling, but the electrical part is identical. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8042AR | AD8042AR-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Obsolete | Obsolete |
| Amplifier Type | Voltage Feedback | Voltage Feedback |
| Number of Circuits | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 225V/µs | 225V/µs |
| Gain Bandwidth Product | 90 MHz | 90 MHz |
| -3 dB Bandwidth | 170 MHz | 170 MHz |
| Current - Input Bias | 1.2 µA | 1.2 µA |
| Voltage - Input Offset | 3 mV | 3 mV |
| Supply Current | 6mA (x2 Channels) | 6mA (x2 Channels) |
| Current - Output / Channel | 50 mA | 50 mA |
| Voltage - Supply Span(Min) | 3 V | 3 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 is the difference between AD8042AR and AD8042AR-REEL?
The AD8042AR and AD8042AR-REEL are the same AD8042 dual operational amplifier die in the same 8-lead SOIC (R-8) package. The difference is packaging format: AD8042AR is supplied in tube/tray quantities, while AD8042AR-REEL is supplied on tape-and-reel for automated assembly. Electrical specifications are identical.
Are AD8042AR and AD8042AR-REEL electrically and functionally interchangeable?
Yes. Both order codes refer to the same AD8042 dual high-speed operational amplifier in an 8-lead SOIC package, so they are electrically and functionally interchangeable. The only distinction is the shipping container (tube vs. tape-and-reel).
What are the key specifications of the AD8042?
The AD8042 is a dual voltage-feedback operational amplifier with a unity-gain bandwidth of 160 MHz and a slew rate of 225 V/µs. It operates on supplies from 3 V to 12 V, is specified for +3 V, +5 V, and ±5 V operation, and is characterized for operation over the −40 °C to +85 °C industrial temperature range.
What package does the AD8042AR use?
The AD8042AR and AD8042AR-REEL are both supplied in the 8-lead SOIC package (Analog Devices R-8 suffix). The package is RoHS-compliant and is suitable for surface-mount assembly.
Which version should I choose for high-volume automated assembly?
AD8042AR-REEL is the appropriate choice for high-volume automated pick-and-place assembly because it is supplied on tape-and-reel. AD8042AR in tubes is typically used for prototyping, low-volume runs, or manual assembly.
Do AD8042AR and AD8042AR-REEL have the same pinout?
Yes. Both order codes use the identical 8-lead SOIC package and pinout: pin 1 = OUT A, pin 2 = −IN A, pin 3 = +IN A, pin 4 = V−, pin 5 = +IN B, pin 6 = −IN B, pin 7 = OUT B, pin 8 = V+. The pinout is unchanged between the tube and reel versions.
Are AD8042AR and AD8042AR-REEL RoHS compliant?
Yes. Both the AD8042AR and AD8042AR-REEL are RoHS-compliant parts. Designers should confirm the specific order-code suffix and compliance documentation against the current Analog Devices datasheet and product page before final qualification.
Can AD8042AR-REEL be used as a drop-in replacement for AD8042AR in an existing design?
Yes. Because both parts share the same die, package, pinout, and electrical specifications, AD8042AR-REEL is a drop-in replacement for AD8042AR. The only practical consideration is that reel packaging is intended for automated assembly equipment rather than manual handling.