What is JRC4558 

The JRC4558 is a dual operational amplifier integrated circuit (IC) manufactured by Japan Radio Corporation (JRC), now part of New Japan Radio (NJR). It's a versatile component used in various electronic applications, particularly popular in guitar pedals and audio circuits.

Known for its robust performance, it offers strong input impedance, substantial voltage amplification (with a gain of up to 100dB), and operates within a wide power supply range (from ±4V to 18V). This IC contains two separate op-amps within its 8-pin package and is available in different formats such as DIP (Dual Inline Package) and SOP (Small Outline Package). Its flexibility and reliability have made it a favorite among engineers, hobbyists, and musicians for decades.

What is TL072

The TL072 is a popular dual low-noise JFET-input operational amplifier (op-amp) manufactured by Texas Instruments. It's part of the TL07x series known for its high input impedance, low noise, and wide bandwidth.

Main Differences between JRC4558 and TL072

1. Technology:
   • JRC4558: Utilizes bipolar technology.
   • TL072: Uses JFET (junction field-effect transistor) technology.
2. Input Impedance:
   • JRC4558: Around 5MΩ.
   • TL072: Higher due to JFET input technology, offering increased input impedance.
3. Noise Performance:
   • JRC4558: Moderate noise performance.
   • TL072: Known for low noise, particularly suitable for audio applications requiring minimal interference.
4. Voltage Noise:
   • JRC4558: Moderate, around 18nV/√Hz.
   • TL072: Low, also around 18nV/√Hz.
5. Bandwidth:
   • JRC4558: Moderate bandwidth, around 3MHz.
   • TL072: Wide bandwidth, around 4MHz.
6. Slew Rate:
   • JRC4558: Slew rate around 1V/µs.
   • TL072: Higher slew rate, approximately 13V/µs.
7. Input Bias Current:
   • JRC4558: Around 200nA.
   • TL072: Very low, typically under 10pA due to JFET input.
8. Input Offset Voltage:
   • JRC4558: Around 1mV.
   • TL072: Very low, typically under 3mV.
9. Common-Mode Rejection Ratio (CMRR):
   • JRC4558: Moderate.
   • TL072: Typically higher.
10. Power Consumption:
    • JRC4558: Generally lower power consumption.
    • TL072: Can vary in terms of power consumption.
11. Voltage Range:
    • JRC4558: ±4V to ±18V.
    • TL072: ±3V to ±18V.
12. Applications:
    • JRC4558: Commonly used in guitar pedals, audio circuits, musical equipment.
    • TL072: Often employed in audio equipment, precision circuits, and applications where low noise and high input impedance are crucial.