ADA4522-2
ADI ADA4522-2 dual zero-drift op amp with ultralow offset and drift, 2.7 MHz bandwidth, a 4.5 to 55 V supply and a rail-to-rail output, in an 8-lead SOIC.
The ADA4522-2 is a dual, zero-drift operational amplifier from ADI that uses a self-correcting architecture to hold an ultra-low offset voltage and a near-zero offset drift over time and temperature, which a precision DC path needs where the long-term error must not grow. The 2.7 MHz gain bandwidth and the low voltage noise suit a wide range of signal conditioning, and the very high open-loop gain keeps the closed-loop error small even in a high-gain stage. The part operates from a single supply of about 4.5 V up to 55 V or a split supply, which covers a 5 V logic rail, a 24 V industrial rail and a ±15 V analog rail in the same part, and it provides a rail-to-rail output that drives a converter input close to the rails. The low input bias current and the low current noise suit a high-impedance source such as a photodiode or a pH probe, and the internal correction removes the 1/f noise corner that a chopper amplifier of the old style could not, so a low-frequency measurement stays clean. Typical applications include a precision DC instrumentation path, a transducer or a bridge interface, a thermocouple or a load-cell amplifier, a pH or a photo-diode sensor front end and a precision power-supply control loop. Every device BeiLuo ships is factory-traceable and includes an import declaration, a certificate of origin and a RoHS compliance file. Our FAE team helps you choose the gain and the supply and plan the layout.
FAE Professional Review
The ADA4522-2 keeps a microvolt-level offset and a near-zero drift, which is exactly what a precision DC path needs where the error must not grow over time. The wide 4.5 to 55 V supply covers a logic, an industrial and a ±15 V rail with one part, and the rail-to-rail output suits an ADC interface. Its correction scheme keeps the low-frequency noise low, so it works for a high-gain sensor front end.
| Parameter | Value |
|---|---|
| Type | Zero-Drift Op Amp |
| Channels | 2 |
| Bandwidth | 2.7 MHz |
| Supply | 4.5 to 55 V |
| Package | SOIC-8 |
Application Circuits
Precision DC instrumentation
Reference circuits and application schematics for Precision DC instrumentation are available from our FAE team.
Transducer and bridge interfaces
Reference circuits and application schematics for Transducer and bridge interfaces are available from our FAE team.
Sensor front ends
Reference circuits and application schematics for Sensor front ends are available from our FAE team.
Precision control loops
Reference circuits and application schematics for Precision control loops are available from our FAE team.
Need a reference schematic or design review? Our FAE engineers can share verified circuits and layout guidance for this part.
Related Documents
Alternative Part Numbers
Complementary Part Numbers
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Frequently Asked Questions
What projects suit the ADA4522-2?
It suits a precision DC path that must hold its offset over time and temperature, such as a transducer interface, a load-cell amplifier or a sensor front end, with a wide 4.5 to 55 V supply range.
Confirm the gain and the supply for your design.
What is zero-drift?
A zero-drift amplifier continuously corrects its own input offset, so the offset stays at a microvolt level instead of drifting with temperature and age. That removes a slow error that would otherwise appear in a high-gain DC measurement.
Read the amplifier selection guide.
Is the amplifier genuine and documented?
BeiLuo supplies factory-traceable ADA4522-2 amplifiers with an import declaration, certificate of origin and RoHS file on every order. Stock is normally available and the datasheet downloads from this page.
Order a sample to validate the amplifier before volume production.