ADA4530-1ARZ-R7

ADA4530-1 is a femto ampere(10¯15 A) level input bias current operational amplifier suitable for use as an electrometer that also includes an integrated guard buffer. Typical application includes laboratory and analytical instrumentation: spectrophoto-meters, chromatographs, mass spectrometers, and, potentiostatic and amperostatic coulometry, instrumentation: picoammeters and coulombmeters, transimpedance amplifier(TIA) for photodiodes, ION, chambers and working electrode measurements, high impedance buffering for chemical sensors and capacitive sensors.

• Low input bias current: ±250fA max at -40°C <lt/> T A <lt/> +125°C (guaranteed at production test)
• Low offset voltage of ±50µV maximum over specified CMRR range
• Offset voltage drift of +0.13µV/°C typical, ±0.5µV/°C maximum
• Integrated guard buffer with 100µV maximum offset
• Low voltage noise density of 14nV/√Hz at 10KHz
• Wide bandwidth of 2MHz unity-gain crossover
• Supply voltage of 4.5V to 16V (±2.25V to ±8V)
• Long-term offset voltage drift (10,000 hours) of 0.5µV typical
• 8 lead NSOIC package
• Operating temperature range from -40°C to 125°C

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