Part A
AD8397ARDZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 5995 PCS
- Package
- SOIC-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Replacement verdict
Compatible functional replacement candidate
The AD8397ARZ and AD8397ARDZ are functionally equivalent, differing only in package and packaging options. Both share identical die, electrical specifications, and pinout, making them interchangeable in circuit design with no performance impact.
Package Type
High match
Pin Configuration
High match
Electrical Specifications
High match
Operating Temperature Range
High match
Parts at a glance
Part B
AD8397ARZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 4852 PCS
- Package
- SOIC-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8397ARZ | AD8397ARDZ | Why it matters |
|---|---|---|---|
| Amplifier Type | Voltage Feedback | Voltage Feedback | Both are voltage feedback op-amps, so the feedback topology and compensation behavior are the same. |
| Number of Channels | 2 | 2 | Dual-channel configuration determines board layout and channel count for the application. |
| Supply Voltage Range | 3 V to 24 V | 3 V to 24 V | The usable supply window must match the system rail to ensure proper operation and headroom. |
| Gain Bandwidth Product | 69 MHz | 69 MHz | GBW sets the achievable closed-loop bandwidth and high-frequency performance. |
| Slew Rate | 53 V/µs | 53 V/µs | Slew rate limits large-signal response and distortion at high frequencies. |
| Input Offset Voltage | 1 mV (typ) | 1 mV (typ) | Offset voltage affects DC accuracy and error budget in precision signal chains. |
| Output Current per Channel | 310 mA | 310 mA | High output drive capability determines ability to drive low-impedance loads such as cables or headphones. |
| Package / Mounting | 8-Lead SOIC (Surface Mount) | 8-Lead SOIC (Surface Mount) | Package and mounting style must match the PCB footprint and assembly process. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range must cover the application environment for reliable operation. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8397ARDZ | AD8397ARZ |
|---|---|---|
| Part Status | Active | Active |
| Amplifier Type | Voltage Feedback | Voltage Feedback |
| Number of Circuits | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 53V/µs | 53V/µs |
| Gain Bandwidth Product | 35 MHz | 35 MHz |
| -3 dB Bandwidth | 69 MHz | 69 MHz |
| Current - Input Bias | 200 pA | 200 pA |
| Voltage - Input Offset | 1 mV | 1 mV |
| Supply Current | 11mA | 11mA |
| Current - Output / Channel | 310 mA | 310 mA |
| Voltage - Supply Span(Min) | 3 V | 3 V |
| Voltage - Supply Span(Max) | 24 V | 24 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 the AD8397ARZ and AD8397ARDZ?
Both are the same AD8397 dual high-output-current operational amplifier from Analog Devices. The suffix difference refers to packaging: the AD8397ARZ is supplied in an 8-lead SOIC (R-8) package, while the AD8397ARDZ is supplied in an 8-lead SOIC with an exposed thermal pad (RD-8). The "Z" suffix in both part numbers indicates RoHS-compliant lead-free construction.
Are the AD8397ARZ and AD8397ARDZ electrically identical?
Yes. Both variants share the same die and specified electrical performance, including a 69 MHz -3 dB bandwidth, 53 V/µs slew rate, and high output current drive capability. The datasheet specifies identical AC and DC parameters for both package options.
Can the AD8397ARDZ be used as a drop-in replacement for the AD8397ARZ?
Not as a direct drop-in. Although the pin functions are the same, the AD8397ARDZ has an exposed thermal pad on the underside that requires a corresponding thermal land on the PCB. The AD8397ARZ (standard SOIC) has no exposed pad, so the PCB footprint and thermal design differ between the two.
Why would a designer choose the AD8397ARDZ over the AD8397ARZ?
The AD8397ARDZ's exposed thermal pad provides a lower thermal resistance path from the die to the PCB, improving heat dissipation under high output current conditions. Designs that drive heavy loads or operate in elevated ambient temperatures may benefit from the RD-8 package's enhanced thermal performance.
What is the operating temperature range for both variants?
Both the AD8397ARZ and AD8397ARDZ are specified over the industrial temperature range of -40°C to +85°C, per the Analog Devices datasheet.
What supply voltage range do the AD8397ARZ and AD8397ARDZ support?
Both variants operate from a single supply of 3 V to 24 V, or from dual supplies of ±1.5 V to ±12 V, as specified in the datasheet.
Are both packages RoHS compliant?
Yes. The "Z" suffix in both AD8397ARZ and AD8397ARDZ denotes RoHS-compliant, lead-free packaging per Analog Devices' part numbering convention.