TL072

Description

The TL072 is a widely used dual operational amplifier (op-amp) known for its JFET-input stage, which provides high input impedance and low noise. It is a standard component in both industrial electronics and consumer audio circuits.

Quick Reference Specifications

• Architecture: Dual Op-Amp (two independent amplifiers in one 8-pin package).

• Supply Voltage: $\pm 3\text{V}$ to $\pm 18\text{V}$ (6V to 36V total).

• Slew Rate: Typically $13\text{V}/\mu\text{s}$ to $16\text{V}/\mu\text{s}$.

• Input Impedance: Extremely high ($10^{12} \, \Omega$ typical).

• Noise Density: $18 \, \text{nV}/\sqrt{\text{Hz}}$ at $1 \, \text{kHz}$.

• Common Packages: DIP-8 (through-hole), SOIC-8 (surface mount).

Pinout Diagram

The TL072 is standard across most manufacturers in an 8-pin configuration:

Key Features for Your Catalog

• JFET Input: Ideal for circuits with high source impedance (like guitar pickups or piezo sensors) where you don’t want the op-amp to “load down” the signal.

• Audio Quality: Its low total harmonic distortion ($0.003\%$ typical) makes it a favorite for audio mixers, preamplifiers, and active filters.

• Protection: Features built-in output short-circuit protection and latch-up-free operation.

Usage Tips

• Decoupling: Always place a ceramic capacitor (typically $0.1 \, \mu\text{F}$) as close as possible to the $V+$ and $V-$ pins to ground. This stabilizes the IC and prevents high-frequency oscillation.

• Input Caution: The input voltage range is generally constrained by the supply voltage. Ensure your input signal does not exceed the supply rails to avoid phase reversal or damage.