JFET Input Op Amp, TL070 & TL080 Families. A range of well-established high-performance JFET input, bipolar output operational amplifiers from Texas Instruments featuring low input bias currents and high slew rates. These op amps have low noise and low distortion and are suitable for a wide variety of audio and signal processing applications. The high input impedance makes them an ideal choice where circuit loading must be minimized. Offset adjustment and external compensation options are available with the single TL071 and TL081 devices.