AD549JHZ Low Input Bias Current Op Amps (≤100 pA) by Analog Devices

Status: Production
Series: AD549
RoHS: Compliant
View Datasheet Manufacturer Site View Pricing & Stock

The AD549 is a monolithic electrometer operational amplifier with very low input bias current. Input offset voltage and input offset voltage drift are laser trimmed for precision performance. The ultralow input current of the part is achieved with Topgate™ JFET technology, a process development exclusive to Analog Devices, Inc. This technology allows fabrication of extremely low input current JFETs compatible with a standard junction isolated bipolar process. The 1015 Ω common-mode impedance, which results from the bootstrapped input stage, ensures that the input current is essentially independent of the common-mode voltage.The AD549 is suited for
Distributor Price Stock
Logo for Richardson RFPD Richardson RFPD -
Buy Now
Logo for element14 element14 US$60.73
Buy Now
View Full Pricing & Stock Comparison


Ultralow input bias current
60 fA maximum (AD549L)
100 fA maximum (AD549K)
250 fA maximum (AD549J)
Input bias current guaranteed over the common-mode voltage range
Low offset voltage
0.50 mV maximum (AD549K)
1.00 mV maximum (AD549J)
Low offset drift
15 µV/°C maximum (AD549K)
20 µV/°C maximum (AD549J)
Low power
700 µA maximum supply current
Low input voltage noise
4 µV (typ) p-p over 0.1 Hz to 10 Hz
MIL-STD-883B parts available

Alternative Descriptions


Featured content from Future

Frequently Asked Questions

Where can I find additional details, specifications and documents for a AD549JHZ?

Additional datasheets, footprints and schematics for AD549JHZ are listed on our Part Details page. You can also find images and similar parts to AD549JHZ on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for AD549JHZ on our Product Comparison page. Access via the 'View Pricing & Stock' button to view AD549JHZ price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does AD549JHZ fall under?

The AD549JHZ is listed under Low Input Bias Current Op Amps (≤100 pA).

Can I view similar or alternative parts?

You can view similar parts to AD549JHZ when available in the Low Input Bias Current Op Amps (≤100 pA) range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the AD549JHZ you can contact the distributor directly for product support, shipping queries etc.

Is the AD549JHZ RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

Which authorised distributors for AD549JHZ have stock available?

Authorised distributors including Farnell, Richardson RFPD and element14 have stock available or on a lead time for AD549JHZ.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for AD549JHZ often in real-time on the comparison pages.

What if I can't find stock of AD549JHZ?

You can fill out our help required form which you can use to request a quote for AD549JHZ from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.

We use cookies to improve your experience. See our privacy policy.