Part A
ADA4610-2BRZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3330 PCS
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The ADA4622-2ARZ and ADA4610-2BRZ are both dual, low-noise, JFET-input operational amplifiers in the same 8-lead SOIC package, making them strong functional replacement candidates. The ADA4622-2ARZ offers a higher gain-bandwidth product and faster slew rate, while the ADA4610-2BRZ provides lower input bias current and lower voltage noise. Designers should validate supply voltage headroom, capacitive load stability, and input bias current requirements against the target application before substituting.
Package Type
High match
Channel Count
High match
Gain Bandwidth Product
Validation required
Input Bias Current
Validation required
Parts at a glance
Part B
ADA4622-2ARZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7137 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADA4622-2ARZ | ADA4610-2BRZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 2 | Both are dual op-amps, so channel count is compatible for direct substitution in dual-channel circuits. |
| Input Offset Voltage (Max) | 0.35 mV | 0.3 mV | Lower offset voltage reduces DC error in precision signal chains; the B-grade ADA4610 offers slightly tighter offset. |
| Input Bias Current (Typ) | 1 pA | 5 pA | Very low bias current is critical for high-impedance sensor and photodiode front-ends; the ADA4622 has an edge here. |
| Gain Bandwidth Product | 8 MHz | 16 MHz | GBW determines achievable closed-loop bandwidth; the ADA4610 supports roughly twice the small-signal bandwidth. |
| Slew Rate | 23 V/µs | 25 V/µs | Slew rate limits large-signal response and distortion at high frequencies; values are close but not identical. |
| Input Voltage Noise Density (1 kHz) | 12 nV/√Hz | 7.3 nV/√Hz | Lower voltage noise improves SNR in low-level signal amplification; the ADA4610 is notably quieter. |
| Supply Voltage Range | ±5 V to ±15 V (10 V to 30 V) | ±4.5 V to ±15 V (9 V to 30 V) | The wider low-end supply range of the ADA4610 allows operation at slightly lower rails, affecting compatibility in low-voltage systems. |
| Quiescent Current per Amplifier (Typ) | 1.1 mA | 1.6 mA | Lower quiescent current benefits power-sensitive designs; the ADA4622 draws less supply current per amplifier. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | Identical industrial temperature ratings ensure both parts suit the same environmental conditions. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Matching SOIC footprint enables drop-in board replacement without layout changes. |
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 | ADA4610-2BRZ | ADA4622-2ARZ |
|---|---|---|
| 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 | 61V/µs | 23V/µs |
| Gain Bandwidth Product | 16.3 MHz | 8 MHz |
| -3 dB Bandwidth | 9.5 MHz | 15.5 MHz |
| Current - Input Bias | 5 pA | 2 pA |
| Voltage - Input Offset | 200 µV | 40 µV |
| Supply Current | 1.6mA (x2 Channels) | 665µA (x2 Channels) |
| Current - Output / Channel | 79 mA | 20 mA |
| Voltage - Supply Span(Min) | 10 V | 5 V |
| Voltage - Supply Span(Max) | 30 V | 30 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary differences between the ADA4622-2ARZ and ADA4610-2BRZ?
The ADA4622-2ARZ is a dual, low-bias-current, rail-to-rail output JFET-input op amp with a typical input bias current of 1 pA and a gain bandwidth product of 8 MHz. The ADA4610-2BRZ is a dual, low-noise, low-input-bias-current JFET-input op amp with a typical input bias current of 5 pA and a gain bandwidth product of 16 MHz. The ADA4610-2BRZ offers higher bandwidth and lower voltage noise, while the ADA4622-2ARZ provides lower input bias current and rail-to-rail output swing.
Are the ADA4622-2ARZ and ADA4610-2BRZ pin-compatible?
Both devices are offered in 8-lead SOIC packages with the standard dual op amp pinout (1=OUT A, 2=-IN A, 3=+IN A, 4=V-, 5=+IN B, 6=-IN B, 7=OUT B, 8=V+). The ADA4622-2ARZ and ADA4610-2BRZ in the SOIC-8 package share this pin configuration, allowing board-level interchangeability when the surrounding circuit is validated for the alternate device.
How do the input bias currents of the ADA4622-2ARZ and ADA4610-2BRZ compare?
The ADA4622-2ARZ specifies a typical input bias current of 1 pA (maximum 10 pA at 25°C), while the ADA4610-2BRZ specifies a typical input bias current of 5 pA (maximum 25 pA at 25°C). The ADA4622-2ARZ therefore offers lower input bias current, which can be advantageous in high-impedance sensor and photodiode applications.
Which device has lower voltage noise, the ADA4622-2ARZ or the ADA4610-2BRZ?
The ADA4610-2BRZ has a lower voltage noise density of approximately 7.5 nV/√Hz at 1 kHz, compared with approximately 12 nV/√Hz at 1 kHz for the ADA4622-2ARZ. For low-noise signal conditioning, the ADA4610-2BRZ is the preferred choice.
What are the gain bandwidth products of the ADA4622-2ARZ and ADA4610-2BRZ?
The ADA4622-2ARZ has a gain bandwidth product of 8 MHz, while the ADA4610-2BRZ has a gain bandwidth product of 16 MHz. The ADA4610-2BRZ provides twice the bandwidth, making it suitable for higher-frequency signal paths.
Do both the ADA4622-2ARZ and ADA4610-2BRZ support rail-to-rail output swing?
Yes. Both the ADA4622-2ARZ and ADA4610-2BRZ feature rail-to-rail output stages, allowing the output voltage to swing close to both supply rails. This is beneficial in single-supply and low-voltage applications where maximum dynamic range is required.
What are the supply voltage ranges for the ADA4622-2ARZ and ADA4610-2BRZ?
The ADA4622-2ARZ operates from a single supply of 5 V to 30 V or a dual supply of ±2.5 V to ±15 V. The ADA4610-2BRZ operates from a single supply of 4.5 V to 30 V or a dual supply of ±2.25 V to ±15 V. Both devices are suitable for a wide range of industrial and instrumentation power rails.
Can the ADA4622-2ARZ and ADA4610-2BRZ be used interchangeably in precision high-impedance circuits?
Interchangeability depends on the specific circuit requirements. The ADA4622-2ARZ offers lower input bias current (1 pA typical vs. 5 pA typical) and is preferable for ultra-high-impedance nodes. The ADA4610-2BRZ offers lower voltage noise and higher bandwidth, making it preferable for low-noise, wider-bandwidth signal chains. A direct substitution should only be made after verifying that noise, bandwidth, bias current, and stability requirements are met for the target design.