JFET quad op-amp for multi-channel signal conditioning
The Texas Instruments TL084CPWR is a JFET-input quad operational amplifier in a 14-TSSOP package, designed for multi-channel signal conditioning where high input impedance and low bias current are required.
Slew rate and bandwidth — what drives the filter design
The 13V/µs slew rate sets the large-signal bandwidth ceiling: for a 10 V peak-to-peak output swing, the full-power bandwidth is roughly 200 kHz — above that the output waveform distorts into a triangle. A designer sizing a 100 kHz active low-pass filter should verify the slew rate does not limit the signal amplitude at the target frequency. The 3 MHz gain bandwidth product means a non-inverting stage with a closed-loop gain of 10 has a -3 dB bandwidth of about 300 kHz. For precision DC-coupled stages, the 3 mV input offset voltage (typical) and 30 pA input bias current define the DC error budget at the output.
Supply current and rail range — power budget fit
Total supply current is 1.4 mA for all four amplifiers, making this a reasonable choice for battery-powered or multi-channel systems where per-channel power is budgeted at 350 µA. The supply span from 10 V to 30 V accommodates single-rail designs at 12 V or 15 V, and split-rail designs at ±5 V to ±15 V.
The same die is available in other package options (DIP, SOIC) under different order codes if the footprint needs to change.