Part A
ADTL082ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6310 Stückzahl
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The ADTL084ARZ and ADTL082ARZ share the same SOIC-8 package, JFET input architecture, and dual-supply operating range, making them functionally interchangeable in many designs. The primary distinction is channel count: the ADTL084ARZ provides four amplifiers while the ADTL082ARZ provides two, so the ADTL082ARZ can serve as a lower-density substitute where the additional channels of the ADTL084ARZ are not required. Verify board layout and unused-channel handling before substituting.
Amplifier Channel Count
Not compatible
Package Type
High match
Input Bias Current
High match
Supply Voltage Range
High match
Parts at a glance
Part B
ADTL084ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1255 Stückzahl
- 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 | ADTL084ARZ | ADTL082ARZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 4 | 2 | Determines how many independent op-amp channels are available in a single package, directly affecting circuit density and channel count. |
| Input Offset Voltage (max) | 3 mV | 3 mV | Sets the maximum DC error at the input; lower offset improves precision in DC-coupled signal chains. |
| Input Bias Current (typ) | 30 pA | 30 pA | JFET input bias current affects loading on high-impedance sources and offset error in precision applications. |
| Gain Bandwidth Product | 3 MHz | 3 MHz | Defines the frequency range over which the amplifier provides useful gain; critical for signal bandwidth planning. |
| Slew Rate | 13 V/µs | 13 V/µs | Limits large-signal response speed and full-power bandwidth; important for fast transient and pulse applications. |
| Supply Voltage Range | ±4 V to ±18 V | ±4 V to ±18 V | Determines compatibility with the system power rails and available output swing headroom. |
| Input Voltage Noise Density | 16 nV/√Hz | 16 nV/√Hz | Sets the noise floor contributed by the amplifier; key for low-level signal amplification and SNR. |
| Package | 14-lead SOIC | 8-lead SOIC | Footprint and pin count must match the PCB layout; different packages are not drop-in compatible. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Confirms suitability for industrial and extended-temperature environments. |
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 | ADTL082ARZ | ADTL084ARZ |
|---|---|---|
| Part Status | Active | Active |
| Amplifier Type | J-FET | J-FET |
| Number of Circuits | 2 | 4 |
| Slew Rate | 20V/µs | 20V/µs |
| Gain Bandwidth Product | 5 MHz | 5 MHz |
| Current - Input Bias | 2 pA | 2 pA |
| Voltage - Input Offset | 1.5 mV | 1.5 mV |
| Supply Current | 1.2mA (x2 Channels) | 1.2mA (x4 Channels) |
| Current - Output / Channel | 27 mA | 27 mA |
| Voltage - Supply Span(Min) | 8 V | 8 V |
| Voltage - Supply Span(Max) | 36 V | 36 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the ADTL084ARZ and ADTL082ARZ?
The ADTL084ARZ is a quad operational amplifier (four amplifiers per package), while the ADTL082ARZ is a dual operational amplifier (two amplifiers per package). Both are JFET-input op amps offered in 14-lead and 8-lead SOIC packages respectively, and both share the same core amplifier architecture and electrical performance per channel.
Are the ADTL084ARZ and ADTL082ARZ pin-compatible?
No. The ADTL084ARZ uses a 14-lead SOIC package with four amplifiers, and the ADTL082ARZ uses an 8-lead SOIC package with two amplifiers. They have different pin counts and pinouts, so they are not drop-in replacements for each other.
Do both devices share the same JFET input characteristics?
Yes. Both the ADTL084ARZ and ADTL082ARZ are JFET-input operational amplifiers, providing low input bias current and high input impedance, which makes them suitable for high-impedance sensor and precision signal-conditioning applications.
What supply voltage range do the ADTL084ARZ and ADTL082ARZ support?
Both devices are specified for operation on dual supplies typically ranging from ±4 V to ±18 V (or equivalent single-supply configurations within that total range), consistent with the standard ADTL08x JFET op amp family. Designers should confirm the exact limits in the respective manufacturer datasheet before finalizing a design.
Which part should be selected for a design requiring four amplifier channels?
The ADTL084ARZ should be selected when four independent amplifier channels are needed in a single package, reducing board space and component count compared with using two ADTL082ARZ devices.
Are the ADTL084ARZ and ADTL082ARZ available in the same package type?
Both are offered in SOIC packages, but with different pin counts: the ADTL084ARZ in a 14-lead SOIC and the ADTL082ARZ in an 8-lead SOIC. The package family is similar, but the footprint and land pattern differ.
Can the ADTL082ARZ be used as a substitute where an ADTL084ARZ channel is unused?
Functionally, one channel of the ADTL084ARZ and one channel of the ADTL082ARZ share the same amplifier characteristics, but substitution requires PCB redesign because the packages and pinouts differ. A direct drop-in substitution is not possible.