Part A
ADA4610-2ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1759 PCS
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The ADA4625-2ARDZ and ADA4610-2ARZ share the same dual op-amp configuration and SOIC-8 footprint, making them mechanically interchangeable on an existing PCB. However, the ADA4625-2ARDZ is a lower-noise, higher-bandwidth JFET-input amplifier with wider supply range, while the ADA4610-2ARZ is a lower-power, lower-voltage CMOS device. The ADA4625-2ARDZ can serve as a functional upgrade in most sockets, but supply voltage, quiescent current, and dynamic performance must be validated against the target circuit before committing to volume production.
Package Type
High match
Channel Count
High match
Supply Voltage Range
Validation required
Input Noise Density
Validation required
Parts at a glance
Part B
ADA4625-2ARDZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1435 PCS
- Series
- Linear - Amplificadores - Instrumentação, 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 | ADA4625-2ARDZ | ADA4610-2ARZ | Why it matters |
|---|---|---|---|
| Input Voltage Noise Density (1 kHz) | 3.3 nV/√Hz | 7.3 nV/√Hz | Lower voltage noise improves signal-to-noise ratio in precision and low-level signal applications. |
| Gain Bandwidth Product | 18 MHz | 16 MHz | GBW determines the maximum frequency at which the amplifier can provide useful gain. |
| Input Bias Current | 15 pA (typ) | 5 pA (typ) | Low bias current minimizes errors in high-impedance sensor and photodiode circuits. |
| Offset Voltage (max) | 100 µV | 250 µV | Lower offset voltage reduces DC error and improves precision in measurement systems. |
| 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) | The supply range determines compatibility with the system power rail and headroom requirements. |
| Quiescent Current per Amplifier | 4.5 mA (typ) | 1.6 mA (typ) | Lower quiescent current reduces power consumption, important for portable and battery-powered designs. |
| Slew Rate | 48 V/µs | 25 V/µs | Higher slew rate supports faster large-signal response and wider full-power bandwidth. |
| Input Common-Mode Voltage Range | Rail-to-rail input (includes both rails) | Rail-to-rail input (includes both rails) | Rail-to-rail input allows signals near the supply rails to be amplified without clipping. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | The temperature range confirms suitability for industrial and harsh-environment applications. |
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 | ADA4610-2ARZ | 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 | 400 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 key differences between the ADA4625-2ARDZ and the ADA4610-2ARZ?
The ADA4625-2ARDZ is a dual low-noise, low-bias-current JFET-input op amp optimized for high slew rate and low input capacitance, while the ADA4610-2ARZ is a dual low-noise, low-input-bias-current JFET-input op amp optimized for low voltage noise and low offset voltage. The ADA4625-2ARDZ offers higher slew rate and wider bandwidth, whereas the ADA4610-2ARZ offers lower voltage noise and lower input bias current.
Are the ADA4625-2ARDZ and ADA4610-2ARZ pin-compatible?
Both devices are offered in 8-lead SOIC packages with the same standard dual op amp pinout, so they are pin-compatible when both are in the SOIC-8 package. However, the ADA4625-2ARDZ is specified in an 8-lead SOIC package, and the ADA4610-2ARZ is also specified in an 8-lead SOIC package, so the pinout matches.
Which device has lower input voltage noise?
The ADA4610-2ARZ has lower input voltage noise, specified at approximately 7.5 nV/√Hz at 1 kHz, compared with approximately 12 nV/√Hz at 1 kHz for the ADA4625-2ARDZ.
Which device offers higher slew rate and bandwidth?
The ADA4625-2ARDZ offers a higher slew rate of approximately 48 V/µs and a gain bandwidth product of approximately 18 MHz, compared with approximately 25 V/µs slew rate and approximately 16 MHz gain bandwidth product for the ADA4610-2ARZ.
How do the input bias currents compare between the two devices?
The ADA4610-2ARZ specifies an input bias current of approximately 5 pA typical at 25°C, while the ADA4625-2ARDZ specifies an input bias current of approximately 10 pA typical at 25°C. Both are JFET-input devices with very low bias current, but the ADA4610-2ARZ is lower.
What are the supply voltage ranges for the ADA4625-2ARDZ and ADA4610-2ARZ?
Both devices operate from dual supplies of ±5 V to ±15 V, corresponding to a total supply range of 10 V to 30 V. The ADA4625-2ARDZ is specified for operation from ±5 V to ±15 V, and the ADA4610-2ARZ is specified for operation from ±5 V to ±15 V as well.
Which device is better suited for high-speed signal conditioning?
The ADA4625-2ARDZ is better suited for high-speed signal conditioning because it provides higher slew rate (approximately 48 V/µs) and wider gain bandwidth (approximately 18 MHz) than the ADA4610-2ARZ (approximately 25 V/µs and 16 MHz). The ADA4625-2ARDZ also features low input capacitance, which benefits high-speed applications.
Can the ADA4625-2ARDZ and ADA4610-2ARZ be used interchangeably in precision low-noise designs?
They should not be treated as interchangeable without validation. The ADA4610-2ARZ offers lower voltage noise (approximately 7.5 nV/√Hz vs approximately 12 nV/√Hz) and lower input bias current, making it preferable for precision low-noise DC applications, while the ADA4625-2ARDZ offers higher slew rate and bandwidth for dynamic applications. Circuit performance must be verified against the respective datasheets before substitution.