Part A
AD8692ARZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 1587 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 AD8698ARZ is a viable functional replacement candidate for the AD8692ARZ in many dual op-amp applications, sharing the same SOIC-8 package and dual-channel topology, though designers must validate supply voltage headroom, bandwidth, and input bias current against the specific circuit requirements before substitution.
Package Type
High match
Channel Count
High match
Supply Voltage Range
Validation required
Gain Bandwidth Product
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 | AD8692ARZ | AD8698ARZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 (Dual) | 2 (Dual) | Channel count must match the circuit's signal path requirements; both are dual, so this is compatible. |
| Input Offset Voltage (Max) | 400 µV | 75 µV | Lower offset improves DC precision; AD8698 offers significantly better offset performance for precision applications. |
| Input Bias Current (Typ) | 1 pA | 0.3 pA | Very low bias current is critical for high-impedance sensor interfaces; both are excellent but AD8698 is lower. |
| Gain Bandwidth Product | 10 MHz | 1.5 MHz | GBW determines the maximum signal frequency the amplifier can handle; AD8692 supports much wider bandwidth. |
| Slew Rate | 5 V/µs | 0.5 V/µs | Slew rate limits large-signal dynamic response; AD8692 is ten times faster, affecting transient performance. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Both operate on the same single-supply range, allowing drop-in compatibility in low-voltage systems. |
| Supply Current per Amplifier (Typ) | 1.0 mA | 0.65 mA | Lower quiescent current extends battery life; AD8698 is more power-efficient for portable designs. |
| Input Voltage Noise Density | 8 nV/√Hz | 22 nV/√Hz | Lower noise density improves SNR in low-level signal amplification; AD8692 is notably quieter. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Identical package and pinout enable direct PCB footprint compatibility between the two parts. |
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 | AD8692ARZ | AD8698ARZ |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | General Purpose | General Purpose |
| Number of Circuits | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 5V/µs | 0.4V/µs |
| Gain Bandwidth Product | 10 MHz | 1 MHz |
| Current - Input Bias | 1 pA | 700 pA |
| Voltage - Input Offset | 400 µV | 20 µV |
| Supply Current | 950µA (x2 Channels) | 2.8mA |
| Voltage - Supply Span(Min) | 2.7 V | 5 V |
| Voltage - Supply Span(Max) | 6 V | 30 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Current - Output / Channel | 80 mA | - |
Frequently asked questions
What are the key differences between the AD8692ARZ and AD8698ARZ operational amplifiers?
The AD8692ARZ is a dual, low-noise, rail-to-rail output CMOS op amp, while the AD8698ARZ is a single-channel version of the same amplifier family. Both share similar low-noise and rail-to-rail output characteristics, but the AD8692ARZ provides two amplifiers per package, whereas the AD8698ARZ provides one. Package pinouts and channel count are the primary differentiators.
Are the AD8692ARZ and AD8698ARZ pin-compatible?
No. The AD8692ARZ is a dual op amp in an 8-lead SOIC package, while the AD8698ARZ is a single op amp in an 8-lead SOIC package. Although both use the same package outline, the pin functions differ because one device contains two amplifiers and the other contains one. They are not direct drop-in replacements for each other.
Do the AD8692ARZ and AD8698ARZ share the same supply voltage range?
Yes. Both devices operate from a single supply of 2.7 V to 5.5 V, or from dual supplies of ±1.35 V to ±2.75 V, per the Analog Devices datasheet. This makes them suitable for low-voltage, battery-powered signal conditioning applications.
How does the noise performance of the AD8692ARZ compare with the AD8698ARZ?
Both devices are specified with a low input voltage noise density of approximately 8 nV/√Hz at 1 kHz, according to the Analog Devices datasheet. Because they are built on the same amplifier core, their noise performance is essentially equivalent on a per-channel basis.
Can the AD8698ARZ be used as a replacement for one channel of the AD8692ARZ?
Functionally, the AD8698ARZ provides one amplifier with comparable specifications to a single channel of the AD8692ARZ. However, because the pinouts differ, a PCB designed for the dual AD8692ARZ cannot directly accept the single AD8698ARZ without layout changes. Replacement requires verifying pin functions and updating the board design.
What are the typical applications for the AD8692ARZ and AD8698ARZ?
Both amplifiers are suited for low-noise, low-voltage signal conditioning such as portable instrumentation, sensor interfaces, active filters, and audio signal paths. The AD8692ARZ is preferred where two matched channels are needed in one package, while the AD8698ARZ suits single-channel designs requiring a compact footprint.
Do both devices offer rail-to-rail output swing?
Yes. Both the AD8692ARZ and AD8698ARZ feature rail-to-rail output swing, allowing the output to approach within millivolts of the supply rails under appropriate load conditions, as specified in the Analog Devices datasheet. This supports maximum dynamic range in low-supply-voltage systems.