Part A
AD823AARZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7222 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Replacement verdict
Compatible functional replacement candidate
The AD823AARZ and AD823AR-REEL7 are functionally equivalent dual operational amplifiers sharing the same core architecture, package footprint, and electrical characteristics, making them interchangeable in most designs. The AD823AARZ is supplied in tube packaging while the AD823AR-REEL7 is supplied on tape and reel, so the choice between them is primarily a matter of assembly and inventory format rather than electrical performance.
Amplifier Type and Channel Count
High match
Package Type and Pinout
High match
Supply Voltage and Bandwidth
High match
Operating Temperature Range
High match
Parts at a glance
Part B
AD823AR-REEL7
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 5284 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
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-REEL7 | 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 output, so the core signal-chain topology is interchangeable. |
| Number of Channels | 2 | 2 | Channel count must match for pin-compatible drop-in replacement in dual-amplifier circuits. |
| 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 ensures the part operates in the same power rails without redesign. |
| Gain Bandwidth Product | 16 MHz | 16 MHz | GBW determines achievable closed-loop bandwidth; matching values preserve AC performance. |
| Slew Rate | 22 V/µs | 22 V/µs | Slew rate limits large-signal response; identical values keep transient behavior consistent. |
| Input Offset Voltage (max) | 800 µV | 800 µV | Offset voltage affects DC accuracy; matching specs ensure equivalent precision in the application. |
| Input Bias Current | 5 pA (typ) | 5 pA (typ) | Low J-FET bias current is critical for high-impedance sensor interfaces; identical values preserve input loading. |
| Package / Mounting | 8-Lead SOIC (Surface Mount) | 8-Lead SOIC (Surface Mount) | Same package and footprint allow direct board-level substitution without layout changes. |
| Packaging / Delivery Form | Tube | Tape & Reel (7-inch) | Delivery format differs; reel packaging suits automated high-volume assembly while tube suits prototyping or low-volume runs. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD823AARZ | AD823AR-REEL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| 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 |
| -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 |
| Gain Bandwidth Product | 10 MHz | - |
Frequently asked questions
Are the AD823AARZ and AD823AR-REEL7 functionally interchangeable?
Yes. Both devices are dual, 16 MHz, rail-to-rail FET-input operational amplifiers in the same 8-lead SOIC package and share the same specified AC and DC performance. The AD823AARZ is supplied in tube form, while the AD823AR-REEL7 is the same die supplied on a 7-inch tape-and-reel for automated assembly.
What is the difference between the AD823AARZ and AD823AR-REEL7 ordering codes?
The suffix indicates packaging only: "Z" denotes RoHS-compliant lead finish and "REEL7" denotes 7-inch tape-and-reel packaging. The AD823AARZ is a RoHS-compliant tube-packaged part; the AD823AR-REEL7 is the tape-and-reel variant. Electrical specifications are identical for both.
What are the key AC specifications of the AD823A/AD823?
The AD823 is specified with a 16 MHz gain-bandwidth product, 3.5 V/µs slew rate, and 0.0003% total harmonic distortion (THD) at 1 kHz. These parameters are common to both the AD823AARZ and AD823AR-REEL7.
What supply voltage range do the AD823AARZ and AD823AR-REEL7 support?
Both parts operate from a single supply of 3 V to 36 V, or from dual supplies of ±1.5 V to ±18 V. This wide range allows use in both low-voltage portable systems and higher-voltage industrial signal chains.
What is the input bias current and input offset voltage of these amplifiers?
The AD823A/AD823 features a typical input bias current of 1 pA (FET input) and a maximum input offset voltage of 800 µV. These values apply equally to the AD823AARZ and AD823AR-REEL7.
Can the AD823AARZ and AD823AR-REEL7 be used in the same PCB footprint?
Yes. Both are offered in the standard 8-lead SOIC (R-8) package with identical pinout and land pattern, so either ordering code can be placed on the same PCB footprint without layout changes.
Which applications are the AD823AARZ and AD823AR-REEL7 suited for?
Both parts are intended for photodiode preamplification, active filters, high-impedance sensor interfaces, and precision signal conditioning where low input bias current and rail-to-rail output swing are required. The tape-and-reel version is preferred for high-volume automated placement.