Part A
ADA4622-2ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7137 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Not a drop-in replacement
The ADA4622-2ARZ and ADA4610-1BRZ-RL are not functionally interchangeable: they differ in channel count, package and pinout, supply voltage range, and input bias current, so the ADA4610-1BRZ-RL cannot directly replace the ADA4622-2ARZ without circuit and layout redesign.
Different channel count
Different package and pinout
Different supply voltage range
Different input bias current
Parts at a glance
Part B
ADA4610-1BRZ-RL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 9428 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 | ADA4622-2ARZ | ADA4610-1BRZ-RL | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 (Dual) | 1 (Single) | Channel count determines whether the part can directly replace the other in a circuit; a dual cannot drop into a single-amplifier footprint and vice versa. |
| Input Offset Voltage (Max) | ±0.35 mV | ±1.5 mV | Lower offset reduces DC error in precision signal chains; a larger offset may require recalibration or trimming when substituting. |
| Input Bias Current (Typ) | ±1 pA | ±5 pA | Bias current affects error in high-impedance and photodiode circuits; both are low, but the difference matters in ultra-low-leakage designs. |
| Gain Bandwidth Product | 8 MHz | 16 MHz | GBW sets the achievable closed-loop bandwidth and stability; a lower-GBW part may not meet the speed requirements of the original design. |
| Slew Rate | 23 V/µs | 25 V/µs | Slew rate limits large-signal response and distortion; similar values ease substitution but the small difference can affect fast transients. |
| Supply Voltage Range | ±2.5 V to ±15 V (5 V to 30 V) | ±4.5 V to ±15 V (9 V to 30 V) | The wider low-voltage range of the ADA4622 allows operation at lower supplies where the ADA4610 cannot function, affecting system compatibility. |
| Input Voltage Noise Density (1 kHz) | 12 nV/√Hz | 7.5 nV/√Hz | Lower noise density improves SNR in low-level signal applications; the ADA4610 offers better noise performance for sensitive front ends. |
| Quiescent Current per Amplifier (Typ) | 0.75 mA | 1.5 mA | Supply current impacts power budget and thermal design; the lower-current ADA4622 is preferable in power-sensitive portable systems. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Both use the same SOIC footprint, but pinout differs between single and dual amplifiers, so board layout compatibility must be verified. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADA4622-2ARZ | ADA4610-1BRZ-RL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Active |
| Amplifier Type | J-FET | J-FET |
| Number of Circuits | 2 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 23V/µs | 61V/µs |
| Gain Bandwidth Product | 8 MHz | 16.3 MHz |
| -3 dB Bandwidth | 15.5 MHz | 9.5 MHz |
| Current - Input Bias | 2 pA | 5 pA |
| Voltage - Input Offset | 40 µV | 400 µV |
| Supply Current | 665µA (x2 Channels) | 1.6mA |
| Current - Output / Channel | 20 mA | 79 mA |
| Voltage - Supply Span(Min) | 5 V | 9 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 key differences between the ADA4622-2ARZ and the ADA4610-1BRZ-RL?
The ADA4622-2ARZ is a dual-channel, low-bias-current, rail-to-rail output JFET-input operational amplifier in an 8-lead SOIC package, while the ADA4610-1BRZ-RL is a single-channel, low-noise, low-input-bias-current JFET-input op amp in an 8-lead SOIC package supplied in tape-and-reel format. The primary differences are channel count (dual vs. single), package ordering format (tube/tray vs. reel), and the specific noise, bandwidth, and supply-current specifications documented in each respective datasheet.
Are the ADA4622-2ARZ and ADA4610-1BRZ-RL pin-compatible?
No. The ADA4622-2ARZ is a dual op amp with both amplifiers in one 8-lead SOIC, whereas the ADA4610-1BRZ-RL is a single op amp in an 8-lead SOIC. Because the pin functions differ (dual devices use pins for two amplifiers plus shared supplies, while single devices use pins for offset null, feedback, and supply), they are not drop-in replacements for one another.
Can the ADA4622-2ARZ be used to replace the ADA4610-1BRZ-RL in an existing design?
Not directly. The ADA4622-2ARZ contains two amplifiers, so substituting it for a single ADA4610-1BRZ-RL requires verifying pinout, supply decoupling, PCB land pattern, and whether the unused second amplifier must be terminated. The design must be revalidated against the ADA4622-2ARZ datasheet before substitution.
What input bias current do these JFET-input amplifiers specify?
Both devices are JFET-input operational amplifiers specified for very low input bias current, making them suitable for high-impedance sensor and photodiode interfaces. The exact maximum input bias current over temperature must be taken from the respective Analog Devices datasheets, as the two parts are specified under different test conditions and grades.
Do both parts support rail-to-rail output swing?
The ADA4622-2ARZ is specified with rail-to-rail output, allowing the output to swing close to both supply rails. The ADA4610-1BRZ-RL is specified with rail-to-rail output as well. Actual headroom depends on load current and supply voltage, so the output swing graphs in each datasheet should be consulted for the target operating conditions.
What supply voltage range is specified for the ADA4622-2ARZ and ADA4610-1BRZ-RL?
Both are specified for dual-supply operation in the range of ±2.25 V to ±15 V (or equivalent single-supply 4.5 V to 30 V), consistent with Analog Devices' JFET-input op amp families. The exact minimum and maximum supply voltages and the associated parametric limits must be confirmed in the respective datasheets for the specific grade ordered.
Which part is better suited for low-noise signal conditioning?
The ADA4610-1BRZ-RL is positioned as a low-noise JFET-input amplifier, making it a candidate for low-noise signal conditioning where a single channel is sufficient. The ADA4622-2ARZ is a dual low-bias-current amplifier; its voltage-noise and current-noise specifications should be compared against the ADA4610-1BRZ-RL datasheet values for the specific source impedance and bandwidth of the application before selecting.
What package and ordering format does each part use?
Both parts are offered in an 8-lead SOIC package. The ADA4622-2ARZ suffix indicates the SOIC package in standard tube/tray ordering, while the ADA4610-1BRZ-RL suffix indicates the SOIC package in tape-and-reel format for automated assembly. Designers should confirm the exact package code and moisture sensitivity level from the Analog Devices ordering guide.