Part A
AD823AARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7222 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The AD823ARZ-R7 and AD823AARZ are functionally equivalent dual operational amplifiers sharing the same core specifications, package, and pinout, making them viable substitutes in most designs. The AD823AARZ is the automotive-qualified variant, so the primary differentiator is qualification grade rather than electrical performance. Designers should confirm the required qualification level and verify supply-chain availability before substituting one for the other.
Amplifier Type and Channel Count
High match
Package and Pinout
High match
Supply Voltage and Bandwidth
High match
Qualification Grade
Validation required
Parts at a glance
Part B
AD823ARZ-R7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2865 Stückzahl
- Package
- SOIC-8
- 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 | AD823ARZ-R7 | AD823AARZ | Why it matters |
|---|---|---|---|
| Amplifier Type | J-FET Input, Rail-to-Rail Output | J-FET Input, Rail-to-Rail Output | Both are dual J-FET input op amps with rail-to-rail outputs, so the core signal-chain topology is interchangeable. |
| Number of Channels | 2 | 2 | Channel count must match for pinout and circuit layout compatibility. |
| 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) | Identical supply range allows direct substitution across single- and dual-supply designs. |
| Gain Bandwidth Product | 16 MHz | 16 MHz | Matching bandwidth ensures equivalent AC performance and stability in the same feedback network. |
| Slew Rate | 22 V/µs | 22 V/µs | Equal slew rate preserves large-signal transient response and settling behavior. |
| Input Offset Voltage (max) | 800 µV | 800 µV | Same offset spec means DC accuracy and error budget remain unchanged after substitution. |
| Input Bias Current (typ) | 5 pA | 5 pA | Ultra-low J-FET bias current is critical for high-impedance sensor and photodiode front ends. |
| Package / Mounting | 8-SOIC, Surface Mount | 8-SOIC, Surface Mount | Identical package and footprint allow drop-in board replacement without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Same temperature rating ensures equivalent environmental robustness for industrial applications. |
| Packaging / Ordering Format | Tape & Reel (R7, 750 units) | Tube / Tray bulk | Different packaging affects assembly line feed method and minimum order quantity, though the die is functionally the same. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD823AARZ | AD823ARZ-R7 |
|---|---|---|
| Part Status | Active | Active |
| Amplifier Type | J-FET | J-FET |
| Number of Circuits | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 35V/µs | 25V/µs |
| Gain Bandwidth Product | 10 MHz | - |
| -3 dB Bandwidth | 19 MHz | 16 MHz |
| Current - Input Bias | 1.3 pA | 5 pA |
| Voltage - Input Offset | 800 µV | 700 µV |
| Supply Current | 6.3mA (x2 Channels) | 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 are the key differences between the AD823ARZ-R7 and the AD823AARZ?
The AD823ARZ-R7 is a dual, 16 MHz, rail-to-rail FET-input operational amplifier supplied in an 8-lead SOIC package and delivered in 7-inch reel packaging (R7 suffix). The AD823AARZ is the same AD823 dual op amp core in the same 8-lead SOIC package, but the "A" grade designation denotes a tighter specification grade per the Analog Devices datasheet. Both share the same pinout and package footprint; the primary differences are grade-level specification limits and packaging format.
Are the AD823ARZ-R7 and AD823AARZ pin-compatible and package-compatible?
Yes. Both devices are offered in the 8-lead SOIC (R-8) package with the identical pinout: 1 = OUT1, 2 = -IN1, 3 = +IN1, 4 = V-, 5 = +IN2, 6 = -IN2, 7 = OUT2, 8 = V+. The PCB land pattern is the same, so they are drop-in compatible from a package and pinout standpoint.
What are the core performance specifications shared by both parts?
Both are dual, FET-input, rail-to-rail output operational amplifiers with a typical gain bandwidth product of 16 MHz, a typical slew rate of 22 V/µs, low input bias current (typically in the low picoamp range), and operation on single supplies from +3 V to +36 V or dual supplies of ±1.5 V to ±18 V. These core parameters are common to the AD823 family per the Analog Devices datasheet.
What does the "A" grade in AD823AARZ signify compared to the standard grade?
The "A" grade in the AD823AARZ denotes a tighter specification grade within the AD823 family, with guaranteed limits on parameters such as offset voltage and offset voltage drift that are tighter than the standard grade. Designers should consult the Analog Devices AD823 datasheet grade table to confirm the exact guaranteed limits for the specific parameter critical to their application.
What does the "-R7" suffix on AD823ARZ-R7 indicate?
The "-R7" suffix indicates the packaging and shipment format: the device is supplied on a 7-inch tape-and-reel, typically in 750-piece or 1,000-piece reel quantities depending on the distributor. It does not change the electrical grade of the device; the AD823ARZ-R7 is the standard grade in reel packaging.
Can the AD823ARZ-R7 and AD823AARZ be used interchangeably in an existing design?
Because both share the same package, pinout, and core electrical characteristics, they are generally interchangeable in circuits where the standard-grade specifications are sufficient. However, if the design relies on the tighter guaranteed limits of the "A" grade, substituting the standard grade may violate the design margin. Always verify the specific guaranteed parameter limits against the Analog Devices datasheet before substitution.
What are the typical applications for these AD823 dual op amps?
Typical applications include high-speed signal conditioning, active filters, photodiode and sensor preamplifiers, ADC input buffers, and portable instrumentation, leveraging the 16 MHz bandwidth, rail-to-rail output swing, and low input bias current of the FET-input architecture. These applications are documented in the Analog Devices AD823 product literature.
What supply voltage range do both devices support?
Both the AD823ARZ-R7 and AD823AARZ operate from a single supply of +3 V to +36 V or from dual supplies of ±1.5 V to ±18 V, per the Analog Devices AD823 datasheet. This wide supply range supports both battery-powered portable designs and higher-voltage industrial signal chains.