Part A
AD823AR
Công ty 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 AD823AARZ and AD823AR are functionally equivalent dual operational amplifiers sharing the same core specifications, package, and pinout, making the AD823AARZ a viable replacement candidate for the AD823AR in most designs. Designers should confirm supply voltage headroom, capacitive load tolerance, and thermal margin against the target application before final qualification.
Amplifier Type and Channel Count
High match
Package and Pinout
High match
Supply Voltage Range
Validation required
Electrical Performance Characteristics
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 | AD823AARZ | AD823AR | Why it matters |
|---|---|---|---|
| Package / Mounting Type | 8-SOIC (Surface Mount) | 8-SOIC (Surface Mount) | Both use the same SOIC-8 footprint, so board layout is compatible; the difference is in the ordering/grade suffix rather than the physical package. |
| Number of Amplifiers | 2 (Dual) | 2 (Dual) | Channel count must match for pin-compatible substitution in dual-op-amp circuits. |
| Gain Bandwidth Product (GBP) | 16 MHz | 16 MHz | GBP determines the closed-loop bandwidth achievable at a given gain; matching values preserve AC performance. |
| Slew Rate | 22 V/µs | 22 V/µs | Slew rate limits large-signal response; identical slew rate ensures comparable transient behavior. |
| Input Offset Voltage (max) | 800 µV | 800 µV | Offset voltage affects DC accuracy; matching max offset supports drop-in replacement in precision paths. |
| 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) | Compatible supply range allows the parts to operate in the same rail configurations without redesign. |
| Input Bias Current (typ) | 5 pA | 5 pA | Low bias current is critical for high-impedance sensor interfaces; matching values preserve input loading behavior. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range must cover the application environment; identical ratings ensure equivalent thermal robustness. |
| RoHS / Lead-Free Status | RoHS Compliant, lead-free | RoHS Compliant (lead-free variant differs by suffix) | Compliance affects manufacturability and regulatory acceptance; the "Z" suffix typically denotes lead-free/RoHS packaging. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD823AR | AD823AARZ |
|---|---|---|
| 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 | 35V/µs |
| -3 dB Bandwidth | 16 MHz | 19 MHz |
| Current - Input Bias | 5 pA | 1.3 pA |
| Voltage - Input Offset | 700 µV | 800 µV |
| Supply Current | 7mA | 6.3mA (x2 Channels) |
| 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 |
| Gain Bandwidth Product | - | 10 MHz |
Frequently asked questions
What are the key differences between the AD823AARZ and the AD823AR?
The AD823AARZ is the RoHS-compliant, lead-free version of the AD823AR. Both are dual, 16 MHz, rail-to-rail FET-input operational amplifiers in an 8-lead SOIC package. The primary difference is the package/ordering suffix: "Z" denotes RoHS compliance and lead-free construction per Analog Devices' ordering guide, while the AD823AR is the non-RoHS legacy orderable variant. Electrical performance is specified identically in the datasheet.
Are the AD823AARZ and AD823AR electrically identical?
Yes. Both parts share the same datasheet specifications for the AD823 family: 16 MHz gain bandwidth, 35 V/µs slew rate, rail-to-rail output, FET input with low input bias current, and operation from ±1.5 V to ±15 V (or 3 V to 30 V single supply). The "Z" suffix indicates RoHS/lead-free packaging and does not change the silicon or specified electrical parameters.
Can the AD823AARZ be used as a drop-in replacement for the AD823AR?
Yes, in most cases. Both are offered in the same 8-lead SOIC (R-8) package with identical pinout and specified electrical performance. The AD823AARZ is lead-free/RoHS-compliant, so it is the appropriate choice for RoHS-restricted assemblies. Verify solder profile and board-level qualification requirements against the manufacturer datasheet before substituting in a qualified design.
What package do the AD823AARZ and AD823AR use?
Both devices are supplied in the 8-lead SOIC package (Analog Devices R-8 suffix). The AD823AARZ is the RoHS-compliant, lead-free version of this package, while the AD823AR is the non-RoHS orderable variant. Pin assignments are identical between the two.
What are the supply voltage and key AC specifications for these amplifiers?
Per the AD823 datasheet, the devices operate from ±1.5 V to ±15 V dual supplies (3 V to 30 V single supply), provide 16 MHz gain bandwidth product, 35 V/µs slew rate, and rail-to-rail output swing. Input bias current is in the low picoamp range typical of FET-input amplifiers. These specifications apply to both the AD823AARZ and AD823AR.
Which variant should be selected for RoHS-compliant designs?
The AD823AARZ should be selected. The "Z" suffix in Analog Devices' ordering nomenclature denotes RoHS-compliant, lead-free packaging. The AD823AR is the non-RoHS legacy orderable part number and should not be specified for new RoHS-restricted designs.
Are the AD823AARZ and AD823AR suitable for the same applications?
Yes. Because both share the same silicon and specified performance, they are suited to the same applications, including photodiode preamplification, active filters, high-speed signal conditioning, and buffer/driver stages requiring FET input and rail-to-rail output. Selection between them is driven by RoHS/lead-free compliance and orderable availability rather than electrical differences.