AD795

PRODUCTION

Low Power, Low Noise Precision FET Op Amp

Data Sheet (Rev. D) Product Selection Table

Part Models: 3
1ku List Price: Starting From $5.93

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Overview

Low power replacement for Burr-Brown
- OPA111, OPA121 op amps
Low noise
- 3.3 μV _P-P maximum, 0.1 Hz to 10 Hz
- 11 nV/√Hz maximum at 10 kHz
- 0.6 fA/√Hz at 1 kHz

High dc accuracy
- 500 μV maximum offset voltage
- 10 μV/°C maximum drift
- 2 pA maximum input bias current
- Low power: 1.5 mA maximum supply current

The AD795 is a low noise, precision, FET input operational amplifier. It offers both the low voltage noise and low offset drift of a bipolar input op amp and the very low bias current of a FET-input device. The 10¹⁴ Ω common-mode impedance insures that input bias current is essentially independent of common-mode voltage and supply voltage variations.

The AD795 has both excellent dc performance and a guaranteed and tested maximum input voltage noise. It features 2 pA maximum input bias current and 500 μV maximum offset voltage, along with low supply current of 1.5 mA maximum.

Furthermore, the AD795 features a guaranteed low input noise of 3.3 μV _P-P (0.1 Hz to 10 Hz) and a 11 nV/√Hz maximum noise level at 10 kHz. The AD795 has a fully specified and tested input offset voltage drift of only 10 μV/°C maximum.

The AD795 is useful for many high input impedance, low noise applications. The AD795 is rated over the commercial temperature range of 0°C to +70°C.

The AD795 is available in an 8-lead SOIC package.

Applications

Low noise photodiode preamps
CT scanners
Precision l-to-V converters

Part Models: 3
1ku List Price: Starting From $5.93

Documentation

Data Sheet 1

AD795: Low Power, Low Noise Precision FET Op Amp Data Sheet (Rev.D) 12/14/2009

Application Note 6

AN-202: An IC Amplifier User’s Guide to Decoupling, Grounding, and Making Things Go Right for a Change (Rev.B) 02/14/2015

AN-256: Accurately Testing Op Amp Settling Times 02/14/2015

AN-253: Find Op Amp Noise with Spreadsheet 02/14/2015

AN-358: Noise and Operational Amplifier Circuits 02/14/2015

AN-356: User's Guide to Applying and Measuring Operational Amplifier Specifications 02/14/2015

AN-358: Noise and Operational Amplifier Circuits 03/01/1969

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
AD795JRZ	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD795JRZ-REEL	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD795JRZ-REEL7	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jul 16, 2025 - 25_0091 Qualification of Wafer Fabrication Site Analog Devices, Inc. Camas WA for (Bipolar) Products
		PCN25_0091_Form Material_Report Qualification Results Summary
AD795JRZ	PRODUCTION
AD795JRZ-REEL	PRODUCTION
AD795JRZ-REEL7	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

AD795

Analog Photodiode Wizard

Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Select a photodiode from the library included in the tool, or enter custom photodiode specifications. Quickly observe tradeoffs between Bandwidth, Peaking (Q), and ENOB/SNR. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.

Open Tool

Analog Filter Wizard

Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.

Open Tool

AD795 SPICE Macro Models 3

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

EVAL-OPAMP-1 Evaluation Board

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Product Details

The Universal Precision Op Amp Evaluation Boards have been designed and optimized for many circuit configurations allowing the users to best suit their applications. These boards are all RoHs Compliant. See references below on what board to order by lead count and package.

EVAL-PRAOPAMP-1KSZ (Single 5-Lead SC70) KS-5
EVAL-PRAOPAMP-1RJZ (Single 5-Lead SOT 23) RJ-5
EVAL-PRAOPAMP-1RMZ (Single 8-Lead MSOP) RM-8
EVAL-PRAOPAMP-1RZ (Single 8-Lead SOIC) R-8

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