Dual JFET op-amp for high-impedance signal conditioning
The JFET input stage keeps input bias current at 50 pA, making the part suited for photodiode amplifiers, piezoelectric sensor interfaces, audio preamplifiers, and active filter stages where low input current is critical. Two independent channels share a common supply, which can range from 7 V to 36 V — covering ±15 V bipolar rails or a single 12 V or 24 V industrial supply without a secondary regulator.
The LF353DR operates from a 7 V minimum to a 36 V maximum supply span, which covers common analog rails: ±5 V (10 V total), ±12 V (24 V total), and ±15 V (30 V total) as well as single 12 V or 24 V supplies. For industrial or automotive temperature ranges, a different JFET op-amp with an extended temperature rating would be needed.