Part A
AD823AR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3906 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD823ARZ is a functionally compatible replacement candidate for the AD823AR, with identical core amplifier specifications and package configuration; the primary distinction is the RoHS-compliant Z-grade designation of the AD823ARZ versus the non-RoHS AD823AR, so validation of solderability and compliance requirements is recommended before substitution.
Amplifier Core Specifications
High match
Package Type and Pinout
High match
Operating Temperature Range
High match
RoHS Compliance
Validation required
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD823ARZ | AD823AR | Why it matters |
|---|---|---|---|
| Amplifier Type | J-FET Input, Rail-to-Rail Output | J-FET Input, Rail-to-Rail Output | Both parts share the same core amplifier topology, so functional behavior is equivalent. |
| Number of Channels | 2 | 2 | Channel count must match for drop-in replacement in dual-amplifier circuits. |
| Gain Bandwidth Product | 16 MHz | 16 MHz | Determines the maximum usable signal frequency and closed-loop bandwidth. |
| Slew Rate | 22 V/µs | 22 V/µs | Affects large-signal transient response and settling behavior. |
| Input Offset Voltage (max) | 1 mV | 1 mV | Offset voltage impacts DC accuracy in precision signal chains. |
| Supply Voltage Range | 3 V to 36 V (±1.5 V to ±18 V) | 3 V to 36 V (±1.5 V to ±18 V) | Must cover the system supply rails for safe operation and output swing. |
| Input Bias Current (typ) | 5 pA | 5 pA | Low J-FET bias current minimizes errors in high-impedance sensor interfaces. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Confirms both parts are rated for the same industrial temperature environments. |
| Package / Mounting | 8-Lead SOIC (RoHS-compliant, Pb-free) | 8-Lead SOIC (leaded, non-RoHS) | The Z suffix denotes RoHS compliance; the physical footprint is identical, but regulatory compliance differs. |
| RoHS / Lead-Free Status | RoHS compliant, Pb-free | Not RoHS compliant, contains lead | Affects compliance with environmental regulations and solder process compatibility. |
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 | AD823AR | AD823ARZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Amplifier Type | J-FET | J-FET |
| Number of Circuits | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 25V/µs | 25V/µs |
| -3 dB Bandwidth | 16 MHz | 16 MHz |
| Current - Input Bias | 5 pA | 5 pA |
| Voltage - Input Offset | 700 µV | 700 µV |
| Supply Current | 7mA | 7mA |
| Current - Output / Channel | 17 mA | 17 mA |
| Voltage - Supply Span(Min) | 3 V | 3 V |
| Voltage - Supply Span(Max) | 36 V | 36 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 AD823ARZ and the AD823AR?
The AD823ARZ and AD823AR are both dual, 16 MHz, rail-to-rail FET-input operational amplifiers from Analog Devices. The primary difference is the package/ordering suffix: the AD823ARZ is supplied in a lead-free, RoHS-compliant 8-lead SOIC (SOIC_N) package, while the AD823AR is the older leaded (non-RoHS) 8-lead SOIC version. The "Z" suffix denotes the lead-free/RoHS-compliant package option.
Are the AD823ARZ and AD823AR electrically and functionally identical?
Yes. Both parts share the same die and datasheet specifications, including 16 MHz gain bandwidth, rail-to-rail output, FET input with low input bias current, and operation on single supplies from 3 V to 36 V or dual supplies of ±1.5 V to ±18 V. The difference is limited to package finish/ordering code, not electrical performance.
Can the AD823ARZ be used as a direct drop-in replacement for the AD823AR?
Yes, in most cases. Both are offered in the same 8-lead SOIC footprint with identical pinout, so the AD823ARZ can replace the AD823AR on an existing PCB without layout changes. The substitution is appropriate where RoHS-compliant assembly is required or preferred.
What is the significance of the "Z" suffix in AD823ARZ?
In Analog Devices nomenclature, the "Z" suffix indicates a lead-free, RoHS-compliant package. The AD823ARZ is therefore the RoHS-compliant version of the AD823AR, which uses the older leaded package finish.
What are the key specifications common to both the AD823ARZ and AD823AR?
Both devices are dual FET-input op amps with 16 MHz gain bandwidth product, rail-to-rail output swing, low input bias current (typically in the picoamp range), and specified operation on single supplies of 3 V to 36 V or dual supplies of ±1.5 V to ±18 V. They are unity-gain stable and suitable for high-impedance sensor interfacing, active filtering, and photodiode amplification.
Are the AD823ARZ and AD823AR available in the same package type?
Yes. Both are offered in the 8-lead SOIC (SOIC_N) package with identical pin assignments. The AD823ARZ is the lead-free/RoHS-compliant variant of that same SOIC package.
Which part should be selected for a new RoHS-compliant design?
The AD823ARZ should be selected for new designs requiring RoHS compliance, since it is the lead-free package option. The AD823AR is the legacy leaded version and is generally not preferred for new RoHS-restricted assemblies.