Details, datasheet, quote on part number: AD795S/883B
CategoryAnalog & Mixed-Signal Processing => Amplifiers => Operational Amplifiers
DescriptionLow Power, Low Noise Precision Fet op Amp
CompanyAnalog Devices
DatasheetDownload AD795S/883B datasheet


Features, Applications

FEATURES Low Power Replacement for Burr-Brown OPA-121 Op Amps Low Noise 2.5 V p-p max, Hz 11 nV/ Hz max at 10 kHz 0.6 fA/Hz at 1 kHz High DC Accuracy 250 V max Offset Voltage V/ C max Drift 1 pA max Input Bias Current Low Power: 1.5 mA max Supply Current Available in Low Cost Plastic Mini-DIP and Surface Mount (SOIC) Packages APPLICATIONS Low Noise Photodiode Preamps CT Scanners Precision l-to-V Converters PRODUCT DESCRIPTION

The 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 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 1 pA maximum input bias current and 250 V maximum offset voltage, along with low supply current 1.5 mA max.

Furthermore, the AD795 features a guaranteed low input noise 2.5 V p-p to 10 Hz) and a 11 nV/Hz max noise level at 10 kHz. The AD795 has a fully specified and tested input offset voltage drift of only 3 V/C max. The AD795 is useful for many high input impedance, low noise applications. The AD795J and AD795K are rated over the commercial temperature range to +70C. The AD795 is available in 8-pin plastic mini-DIP and 8-pin surface mount (SOIC) packages.

Typical Distribution of Average Input Offset Voltage Drift

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

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TMINTMAX VCM 0 V VCM 0 V VCM +10 V VCM 0 V VCM 10 V RLOAD 10 k RLOAD = 1 kHz = 10 kHz = 1 kHz 20 V p-p RLOAD 2 k VOUT 20 V p-p RLOAD 10 V Step 10 V Step 50% Overdrive = 1 kHz 3 V rms VDIFF

INPUT CURRENT NOISE FREQUENCY RESPONSE Unity Gain, Small Signal Full Power Response Slow Rate, Unity Gain SETTLING TIME To 0.01% Overload Recovery4 Total Harmonic Distortion INPUT IMPEDANCE Differential Common Mode INPUT VOLTAGE RANGE Differential5 Common-Mode Voltage Over Max Operating Temperature Common-Mode Rejection Ratio OUTPUT CHARACTERISTICS Voltage Current POWER SUPPLY Rated Performance Operating Range Quiescent Current


NOTES 1 Input offset voltage specifications are guaranteed after 5 minutes of operation +25C. 2 Bias current specifications are guaranteed maximum at either input after 5 minutes of operation = +25C. For higher temperature, the current doubles every 10 C. 3 Gain k. 4 Defined as the time required for the amplifier's output to return to normal operation after removal a 50% overload from the amplifier input. 5 Defined as the maximum continuous voltage between the inputs such that neither input exceeds 10 V from ground. All min and max specifications are guaranteed. Specifications subject to change without notice.

Supply Voltage. 18 V Internal Power = +25C) SOIC Package. mW 8-Pin Mini-DIP Package. 750 mW Input Voltage. VS Output Short Circuit Duration. Indefinite Differential Input Voltage. +VS and VS Storage Temperature Range (N, R). to +125C Operating Temperature Range to +70C

NOTES 1 Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2 8-Pin Plastic Mini-DIP Package: 100C/Watt 8-Pin Small Outline Package: = 155C/Watt

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 volts, which readily accumulate on the human body and on test equipment, can discharge without detection. Although the AD795 features proprietary ESD protection circuitry, permanent damage may still occur on these devices if they are subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid any performance degradation or loss of functionality.


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