AD795JN Analog Devices, AD795JN Datasheet
AD795JN
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AD795JN Summary of contents
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... FREQUENCY – Hz AD795 Voltage Noise Spectral Density REV. B 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 that 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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AD795–SPECIFICATIONS Parameter 1 INPUT OFFSET VOLTAGE Initial Offset Offset vs. Temperature vs. Supply (PSRR) vs. Supply (PSRR) 2 INPUT BIAS CURRENT Either Input Either Input @ T = MAX Either Input Offset Current Offset Current @ T = MAX OPEN-LOOP ...
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NOTES 1 Input offset voltage specifications are guaranteed after 5 minutes of operation Bias current specifications are guaranteed maximum at either input after 5 minutes of operation Gain = – kW. ...
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AD795–Typical Performance Characteristics 10k SUPPLY VOLTAGE – ±Volts Figure 1. Common-Mode Voltage Range vs. Supply ±15V ...
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COMMON MODE VOLTAGE – Volts Figure 7. Input Bias Current vs. Common-Mode Voltage 1kHz 12.5 VOLTAGE NOISE 10 CURRENT NOISE 7 ...
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AD795 30 25 – OUTPUT CURRENT OUTPUT CURRENT 10 5 –60 –40 – TEMPERATURE – Figure 13. Short Circuit Current Limit vs. Temperature 1000 900 800 700 600 500 400 300 200 100 ...
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FREQUENCY – Hz Figure 19. Large Signal Frequency Response – 3Vrms 10k –70 L –80 –90 –100 –110 –120 100 1k FREQUENCY – Hz Figure 21. ...
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AD795 10kW +V 0.1mF S 10kW AD795 100pF 10kW 4 0.1mF –V S Figure 24. Unity Gain Inverter +V 0.1mF AD795 6 OUT ...
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CIRCUIT BOARD NOTES The AD795 is designed for mounting on PC boards. Maintaining picoampere resolution in those environments requires a lot of care. Both the board and the amplifier’s package have finite resistance. Voltage differences between the input pins and ...
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AD795 Leakage through the bulk of the circuit board will still occur with the guarding schemes shown in Figures 31 and 32. Stan- dard “G10” type printed circuit board material may not have high enough volume resistivity to hold leakages ...
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AC RESPONSE WITH HIGH VALUE SOURCE AND FEEDBACK RESISTANCE Source and feedback resistances greater than 100 kW will magnify the effect of input capacitances (stray and inherent to the AD795) on the ac behavior of the circuit. The effects of ...
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... In order to achieve the low input bias currents of the AD795 not possible to use the same on-chip protection as used in other Analog Devices op amps. This makes the AD795 sensitive to handling and precautions should be taken to minimize ESD exposure whenever possible. ...
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W 9 GUARD 2 AD795 PHOTODIODE 3 8 Figure 42. The AD795 Used as a Photodiode Preamplifier Preamplifier Applications The low input current and offset voltage levels of the AD795 together with its low voltage noise make this ...
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AD795 10mV & SIGNAL BANDWIDTH 1mV i n WITH FILTER NO FILTER 100nV 10nV 1 10 100 FREQUENCY – Hz Figure 45. Voltage Noise Spectral Density of the Circuit of Figure 44 With ...
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COPLANARITY All brand or product names mentioned are trademarks or registered trademarks of their respective holders. REV. B OUTLINE DIMENSIONS 8-Lead Standard Small Outline Package [SOIC] Narrow Body (RN-8) Dimensions shown in millimeters and (inches) 5.00 ...
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AD795 Revision History Location 10/02–Data Sheet changed from REV REV. B Deleted Plastic Mini-DIP (N) Package . . . . . . . . . . . . . . . . . . . . . . ...