Part A
ADA4610-2BRZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 3330 PCS
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Replacement verdict
Compatible functional replacement candidate
The ADA4625-2ARDZ and ADA4610-2BRZ are both dual low-noise, low-bias-current JFET-input operational amplifiers in 8-lead SOIC packages, making the ADA4625-2ARDZ a viable functional replacement candidate for the ADA4610-2BRZ in many precision signal-chain applications. However, the two devices differ in supply voltage range, quiescent current, and input bias current, so the designer must validate the target circuit against the ADA4625-2ARDZ's higher supply headroom requirement and confirm that its noise and bandwidth profile meets the application's performance envelope before committing to a drop-in substitution.
Package Type
High match
Channel Count
High match
Supply Voltage Range
Validation required
Input Bias Current
Validation required
Parts at a glance
Part B
ADA4625-2ARDZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 1435 PCS
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADA4625-2ARDZ | 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) | 80 µV | 250 µV | Lower offset voltage improves DC precision; the ADA4625-2 offers tighter offset for high-accuracy signal chains. |
| Input Bias Current (Typ) | 15 pA | 5 pA | Ultra-low bias current minimizes errors in high-impedance sensor and photodiode front-ends; the ADA4610-2 is slightly better here. |
| Gain Bandwidth Product | 18 MHz | 16 MHz | GBW sets the achievable closed-loop bandwidth; both are similar, but the ADA4625-2 provides slightly more bandwidth. |
| Slew Rate | 48 V/µs | 25 V/µs | Higher slew rate supports faster large-signal response and lower distortion at high frequencies; the ADA4625-2 is nearly twice as fast. |
| Input Voltage Noise Density (1 kHz) | 3.3 nV/√Hz | 7.3 nV/√Hz | Lower voltage noise improves SNR in low-level signal amplification; the ADA4625-2 is significantly quieter. |
| Supply Voltage Range | 5 V to 36 V (±2.5 V to ±18 V) | 4.5 V to 36 V (±2.25 V to ±18 V) | Both support wide dual-supply operation; the ADA4610-2 tolerates a slightly lower minimum supply, useful in low-voltage systems. |
| Quiescent Current per Amplifier (Typ) | 4.5 mA | 1.6 mA | Lower quiescent current reduces power consumption; the ADA4610-2 is preferable for power-sensitive designs. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Identical industrial temperature range ensures both parts are suitable for the same environmental conditions. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Matching package and pinout allow 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 | ADA4625-2ARDZ |
|---|---|---|
| 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 | 48V/µs |
| Gain Bandwidth Product | 16.3 MHz | 18 MHz |
| -3 dB Bandwidth | 9.5 MHz | 16 MHz |
| Current - Input Bias | 5 pA | 7 nA |
| Voltage - Input Offset | 200 µV | 100 µV |
| Supply Current | 1.6mA (x2 Channels) | 4mA (x2 Channels) |
| Current - Output / Channel | 79 mA | 33 mA |
| Voltage - Supply Span(Min) | 10 V | 5 V |
| Voltage - Supply Span(Max) | 30 V | 36 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 ADA4625-2ARDZ and the ADA4610-2BRZ?
The ADA4625-2ARDZ is a dual, low-noise, low-bias-current JFET-input operational amplifier optimized for high-speed and low-voltage noise applications, supplied in an 8-lead SOIC package. The ADA4610-2BRZ is a dual, precision, low-noise, rail-to-rail output JFET-input op amp supplied in an 8-lead SOIC package with a B-grade accuracy specification. The ADA4625-2 offers wider bandwidth and lower voltage noise, while the ADA4610-2B provides tighter DC precision (lower offset voltage and drift) for precision signal-chain applications.
Are the ADA4625-2ARDZ and ADA4610-2BRZ pin-compatible?
Both devices are offered in an 8-lead SOIC package 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+). They are pin-compatible in that package, but substitution requires verification of supply voltage, input common-mode range, output swing, and stability in the target circuit.
How do the input bias current and input offset voltage compare between the two parts?
Both are JFET-input amplifiers with very low input bias current, typically in the picoampere range at room temperature. The ADA4610-2BRZ is specified with tighter DC precision, including lower input offset voltage and lower offset voltage drift than the ADA4625-2ARDZ, making it preferable for high-accuracy DC signal conditioning. The ADA4625-2ARDZ prioritizes low voltage noise and high bandwidth over tight offset specifications.
Which device is better suited for low-noise audio or sensor front-end applications?
The ADA4625-2ARDZ is optimized for low voltage noise and high bandwidth, making it well suited for low-noise sensor front ends and wideband signal conditioning. The ADA4610-2BRZ offers low noise combined with tight DC precision, making it suitable for precision sensor interfaces where offset and drift are critical. Selection depends on whether voltage noise/bandwidth or DC accuracy dominates the error budget.
What supply voltage ranges do the ADA4625-2ARDZ and ADA4610-2BRZ support?
Both devices are specified for dual-supply operation in the range of ±2.25 V to ±18 V (or equivalent single-supply 4.5 V to 36 V), consistent with the JFET-input architecture of these families. Designs should confirm the exact supply range and absolute maximum ratings in the respective manufacturer datasheets before use.
Can the ADA4625-2ARDZ directly replace the ADA4610-2BRZ in an existing design?
A direct replacement is possible only after validating all differences against the manufacturer datasheets. Key checks include input offset voltage and drift, voltage noise density, gain bandwidth, slew rate, input common-mode voltage range, output swing, and stability with the existing feedback network. Because the two parts target different performance priorities, circuit-level verification is required.
How do the packages and operating temperature ranges of these two parts compare?
Both the ADA4625-2ARDZ and ADA4610-2BRZ are offered in an 8-lead SOIC package and are specified over the industrial temperature range of -40°C to +125°C. Package and temperature-grade compatibility should still be confirmed against the specific ordering code and datasheet revision.