JRC4558 Dual Operational Amplifier Comprehensive Guide
2024-11-29 179

The JRC4558 is a high-performance monolithic dual operational amplifier, designed for reliability and efficiency. It features internal compensation and is constructed on a single silicon chip. With a typical high voltage gain of 100 dB, excellent input impedance of 5 MΩ, and compatibility with a wide power supply range (±4V to ±18V), it is an ideal choice for pedal circuit designs and other versatile applications.

Catalog

Pin Configuration of JRC4558

Pin Number	Pin Name	Description
1	OUT (A)	The output pin of the Op-amp A
2	Inverting Input (A)	The Inverting input pin of the Op-Amp A
3	Non-Inverting Input (A)	The Non-Inverting Input Pin of Amplifier A
4	Power (-Vs)	Negative supply terminal
5	Reference	The Non-Inverting Input Pin of Amplifier B
6	Output	The Inverting input pin of the Op-Amp B
7	Power (+Vs)	The output pin of the Op-amp B
8	+Vs	Positive supply terminal

Characteristics of JRC4558

• The JRC4558 operational amplifier offers a supply voltage range of ±5V to ±15V, making it suitable for a variety of applications.

• It features a bandwidth of 3MHz and contains two amplifiers within its 8-pin configuration.

• The amplifier operates efficiently within a temperature range of 0°C to 70°C and provides a slew rate of 1.7V/µs, ensuring fast signal response.

• The JRC4558 is available in both 8-pin DIP and SOP packages, providing flexibility for different design requirements.

Alternative Op-Amps of JRC4558

• LM158

• LM158A

• LM358

• LM358A

• LM2904

• LM2904Q

• LM4558

• LM747

Circuit Diagram of JRC4558

As previously mentioned, the JRC4558 is a dual operational amplifier IC. Its internal connection diagram is illustrated below.

Let’s use one of the two available op-amps in the JRC4558 to build a simple circuit diagram, demonstrating its applications.

In the circuit above, the op-amp functions as a Non-Inverting Amplifier, as the input is applied to the non-inverting terminal of the op-amp. The output is denoted as V_o, and the device is powered using a single voltage source, V_CC. The output voltage is determined by the equation:

For instance, if R₁ = 100, R₂ = 10, and the input voltage V_i = 20mV then:

This demonstrates the amplifier functionality of the op-amp. Using this principle, the JRC4558 can be employed to design a variety of other op-amp application circuits.

Applications of the JRC4558

Ground-referenced single Amplifiers in Automobile and Portable Instrumentation

The JRC4558 is commonly used in ground-referenced single amplifier circuits within automotive and portable instrumentation applications. Its high performance and wide supply voltage range make it suitable for providing accurate signal amplification in compact and rugged designs.

Sample and Hold Amplifiers

This operational amplifier excels in sample and hold circuits, where it accurately captures and retains analog signal values for processing. Its low offset voltage and high input impedance ensure precision in applications requiring stable signal acquisition.

Long Duration Timers/Multivibrators

The JRC4558 is ideal for constructing long-duration timers or multivibrators, with timing ranges extending from microseconds to hours. Its reliable operation over a wide voltage range enables it to handle timing-required tasks in various electronic systems.

Photocurrent Instrumentation

In photocurrent-based instrumentation, the JRC4558 is used to amplify and process small current signals generated by photodetectors. Its high input impedance and low noise performance make it an excellent choice for sensitive optical measurement systems.

Intrusion Alarm Systems

The JRC4558 finds applications in intrusion alarm systems, where it functions as a signal amplifier or comparator to detect and process alarm-triggering events. Its fast response time and stable operation ensure reliable security monitoring.

Comparators

With its high-speed operation and precise voltage amplification, the JRC4558 is frequently employed in comparator circuits. It helps detect voltage levels and transitions, making it suitable for threshold detection in a wide range of applications.

Function Generators

The JRC4558 is used in function generator circuits to produce various waveforms, such as sine, square, or triangle waves. Its balanced performance and versatility ensure reliable waveform generation for testing and signal processing.

Instrumentation Amplifiers

As a component in instrumentation amplifiers, the JRC4558 provides accurate and stable signal amplification. Its high input impedance and low power consumption make it ideal for use in medical equipment, industrial sensors, and other precision measurement devices.

Dimensions of JRC4558