Part A
ADA4622-2ARZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7137 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 ADA4622-2ARZ and ADA4610-2BRZ-RL are both dual, low-noise, precision JFET-input operational amplifiers in 8-lead SOIC packages, sharing a common functional architecture and pinout that make them viable candidates for substitution in many signal-conditioning designs. However, the two devices differ in supply voltage range, input bias current, and bandwidth, so the replacement should be validated against the target circuit's supply rails, source impedance, and dynamic requirements before adoption.
Package Type
High match
Channel Count
High match
Supply Voltage Range
Validation required
Input Bias Current
Validation required
Parts at a glance
Part B
ADA4610-2BRZ-RL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7736 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
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-RL | 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 reduces DC error in precision signal chains; the B-grade ADA4610 offers a slightly tighter offset spec. |
| Input Bias Current (Typ) | 1 pA | 5 pA | Very low bias current is critical for high-impedance sensor and photodiode front-ends; both are excellent but differ in magnitude. |
| Gain Bandwidth Product | 8 MHz | 16 MHz | GBW sets the achievable closed-loop bandwidth and settling; the ADA4610 provides roughly double the 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 | 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 usable supply window determines compatibility with the system rail; the ADA4610 tolerates a slightly lower minimum supply. |
| Quiescent Current per Amplifier (Typ) | 1.1 mA | 1.6 mA | Quiescent current affects power budget in portable and battery-powered designs; the ADA4622 is more power-efficient. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Identical industrial/extended temperature ratings ensure both parts suit the same environmental conditions. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Matching package and pinout allow drop-in board replacement without layout changes. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADA4622-2ARZ | ADA4610-2BRZ-RL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| 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 | 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 | 200 µV |
| Supply Current | 665µA (x2 Channels) | 1.6mA (x2 Channels) |
| Current - Output / Channel | 20 mA | 79 mA |
| Voltage - Supply Span(Min) | 5 V | 10 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 the ADA4610-2BRZ-RL?
The ADA4622-2ARZ is a dual, low-bias-current, rail-to-rail output JFET-input operational amplifier supplied in an 8-lead SOIC package. The ADA4610-2BRZ-RL is a dual, low-noise, low-input-bias-current JFET-input op amp supplied in an 8-lead SOIC package on tape and reel. Both are dual JFET-input amplifiers from Analog Devices, but they differ in their specified noise, bandwidth, supply range, and grade/package options as documented in their respective datasheets.
Are the ADA4622-2ARZ and ADA4610-2BRZ-RL 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+). Because they share this standard SOIC-8 dual amplifier pinout, they are pin-compatible at the package level, but electrical differences must still be validated for the target design.
How do the input bias current specifications compare?
Both parts are JFET-input amplifiers with very low input bias current. The ADA4622-2 datasheet specifies input bias current in the low picoampere range at room temperature, and the ADA4610-2 datasheet likewise specifies very low input bias current typical of JFET inputs. For exact maximum limits over temperature, consult the respective Analog Devices datasheets, as the guaranteed limits differ between the two parts.
Which device offers lower voltage noise?
The ADA4610-2 is specified as a low-noise JFET-input amplifier, with voltage noise density in the low nanovolts-per-root-hertz range per its datasheet. The ADA4622-2 is specified with somewhat higher voltage noise density. For precision low-noise signal chains, the ADA4610-2 is generally the lower-noise choice, but the exact figures should be confirmed from the manufacturer datasheets for the specific grade.
Do the two amplifiers support the same supply voltage range?
Both are specified for dual-supply operation, but the guaranteed supply ranges differ. The ADA4622-2 is specified for operation on supplies up to approximately ±18 V (36 V total), while the ADA4610-2 is specified for a somewhat lower maximum total supply. The exact minimum and maximum supply voltages for each grade must be verified from the Analog Devices datasheets before substitution.
What does the "BRZ-RL" suffix indicate on the ADA4610-2BRZ-RL?
In Analog Devices nomenclature, "B" denotes the grade, "RZ" denotes the RoHS-compliant 8-lead SOIC package, and "RL" denotes tape-and-reel packaging. The ADA4622-2ARZ uses the "A" grade in the same "RZ" SOIC package, but without the tape-and-reel suffix. Buyers should confirm grade and packaging from the ordering guide in each datasheet.
Can the ADA4622-2ARZ be used as a drop-in replacement for the ADA4610-2BRZ-RL?
Because both are dual JFET-input op amps in the standard 8-lead SOIC pinout, a drop-in replacement is physically possible, but it is not automatically electrically equivalent. Noise, bandwidth, supply range, offset voltage, and grade specifications differ between the two parts, so any substitution must be validated against the target circuit requirements and the manufacturer datasheets.
Are both devices RoHS compliant?
Yes. The "Z" in both the ADA4622-2ARZ and ADA4610-2BRZ-RL part numbers indicates the RoHS-compliant package variant per Analog Devices ordering nomenclature. Designers should still confirm the current compliance status on the manufacturer's product page or the datasheet ordering guide, as compliance declarations can be updated.