AD795JR Analog Devices Inc, AD795JR Datasheet
AD795JR
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AD795JR Summary of contents
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FEATURES Low power replacement for Burr-Brown OPA111, OPA121 op amps Low noise 3.3 μV p-p maximum, 0 nV/√Hz maximum at 10 kHz 0.6 fA/√ kHz High dc accuracy 500 μV maximum offset voltage ...
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AD795 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Connection Diagram ....................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 5 Thermal Resistance ...................................................................... 5 ESD Caution .................................................................................. 5 Typical Performance ...
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... V DIFF ±10 ± ± − MIN MAX R ≥ 2 kΩ V − − − 4 MIN MAX ±10 V ±5 OUT Short circuit Rev Page AD795 AD795JR Typ Max Unit 100 500 μV 300 1000 μ μV/°C 110 dB 100 0.1 1 120 dB 108 dB 1 ...
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... Defined as the time required for the amplifier’s output to return to normal operation after removal of 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. Test Conditions/Comments Min ±4 = +25° +25°C. For higher temperature, the current doubles every 10°C. A Rev Page AD795JR Typ Max Unit ±15 V ±18 V 1.3 1.5 mA ...
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ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage Internal Power Dissipation ( +25°C) A SOIC Package Input Voltage 1 Input Current Output Short-Circuit Duration Differential Input Voltage Storage Temperature Range (R) Operating Temperature Range AD795J 1 Limit input ...
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AD795 TYPICAL PERFORMANCE CHARACTERISTICS 10kΩ – SUPPLY VOLTAGE (±V) Figure 4. Common-Mode Voltage Range vs. Supply Voltage 10kΩ OUT 10 ...
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COMMON-MODE VOLTAGE (V) Figure 10. Input Bias Current vs. Common-Mode Voltage –4 10 –5 10 –I IN –6 10 –7 10 –8 10 –9 10 –10 ...
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AD795 30 25 –OUTPUT CURRENT 20 +OUTPUT CURRENT –60 –40 – TEMPERATURE (°C) Figure 16. Short-Circuit Current Limit vs. Temperature 0.1% 4 0.01 ERROR –2 0.01% –4 0.1% ...
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FREQUENCY (Hz) Figure 22. Large Signal Frequency Response 1000 100 10 1 0.1 1k 10k 100k 1M FREQUENCY (Hz) Figure 23. Closed-Loop Output Impedance vs. Frequency – ...
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AD795 20V 100 Figure 28. Unity Gain Inverter Large Signal Pulse Response 10mV 100 Figure 29. Unity Gain Inverter Small Signal Pulse Response +V S 0.1µ AD795 6 R ...
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MINIMIZING INPUT CURRENT The AD795 is guaranteed maximum input current with ±15 V supply voltage at room temperature. Careful atten- tion to how the amplifier is used is necessary to maintain this performance. The amplifier’s operating temperature ...
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AD795 CIRCUIT BOARD NOTES The AD795 is designed for mounting on printed circuit boards (PCBs). Maintaining picoampere resolution in those environ- ments requires a lot of care. Both the board and the amplifier’s package have finite resistance. Voltage differences between ...
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Leakage through the bulk of the circuit board can still occur with the guarding schemes shown in Figure 34 and Figure 35. Standard G10 type PCB material may not have high enough volume resistivity to hold leakages at the sub-picoampere ...
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AD795 AC RESPONSE WITH HIGH VALUE SOURCE AND FEEDBACK RESISTANCE Source and feedback resistances greater than 100 kΩ magnifies 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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OVERLOAD ISSUES Driving the amplifier output beyond its linear region causes some sticking; recovery to normal operation is within 2 μs of the input voltage returning within the linear range. If either input is driven below the negative supply, the ...
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AD795 PREAMPLIFIER APPLICATIONS The low input current and offset voltage levels of the AD795 together with its low voltage noise make this amplifier an excellent choice for preamplifiers used in sensitive photodiode applications typical preamp circuit, shown in ...
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USING A T NETWORK A T network, shown in Figure 49, can be used to boost the effective transimpedance of an I-to-V converter, for a given feedback resistor value. However, amplifier noise and offset voltage contributions are also amplified by ...
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... COPLANARITY ORDERING GUIDE 1 Model Temperature Range AD795JR 0°C to +70°C AD795JR-REEL 0°C to +70°C AD795JR-REEL7 0°C to +70°C AD795JRZ 0°C to +70°C AD795JRZ-REEL 0°C to +70°C AD795JRZ-REEL7 0°C to +70° RoHS Compliant Part. 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2441) 4.00 (0.1574 ...
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NOTES Rev Page AD795 ...
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AD795 NOTES ©2002–2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00845-0-12/09(C) Rev Page ...