The Picotest J2190A is a 0.1Hz-10Hz Active Filter designed specifically for professional design engineers. This high-performance filter minimizes circuit loading with an input impedance of approximately 150KΩ, ensuring accurate opamp measurements, voltage regulation, and voltage reference testing. Featuring a 4th-order high-pass and low-pass filter, the J2190A offers an optimally flat response and 0dB gain. Its output impedance of 50Ω allows for low-noise coaxial connections to test equipment. The filter can be cascaded for sharper cutoff frequencies and powered by J2170A.