LMP7721MA/NOPB ,3 Femtoampere Input Bias Current Precision Amplifier 8-SOIC -40 to 125Block Diagram... 16Information..... 264 Revision HistoryNOTE: Page numbers for previous revisions m ..
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LMP7721-LMP7721MA/NOPB
3 Femtoampere Input Bias Current Precision Amplifier
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LMP7721SNOSAW6E –JANUARY 2008–REVISED DECEMBER 2014
LMP7721 3-Femtoampere Input Bias Current Precision Amplifier Features 3 DescriptionThe LMP7721is the industry’s lowest specified input Unless Otherwise Noted, Typical ValuesatTA= bias current precision amplifier. The ultra-low input25°C,VS=5V. bias currentis3 fA, witha specified limitof ±20fAat• Input Bias Current (VCM=1V) 25°C and ±900fAat 85°C. Thisis achieved with the Maximumat 25°C ±20fA latest patent-pending technologyof input bias current
cancellation amplifier circuitry. This technology also– Maximumat 85°C ±900fA maintains the ultra-low input bias current over the• Offset Voltage ±26 µV entire input common-mode voltage range of the• Offset Voltage Drift −1.5 μV/°C amplifier. DC Open-Loop Gain 120 dB DC CMRR 100 dB• Input Voltage Noise (atf=1 kHz) 6.5 nV/√Hz• THD 0.0007%• Supply Current 1.3 mA• GBW17 MHz• Slew Rate (Falling Edge) 12.76 V/μs• Supply Voltage 1.8Vto 5.5V• Operating Temperature Range −40°Cto 125°C• 8-Pin SOIC
2 Applications• Photodiode Amplifier• High Impedance Sensor Amplifier Ion Chamber Amplifier• Electrometer Amplifier pH Electrode Amplifier• Transimpedance Amplifier
Ultra-Low Input Bias Current
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe datasheet.
