JRC4558 Op-Amp Datasheet, Pinout, Equivalents, Features & Its Applications

Within the realm of electronics, many essential components fuel innovation and empower an array of devices. Among these components, operational amplifiers, affectionately known as op-amps, occupy a unique and pivotal role. Standing tall among them is the JRC4558 op-amp, celebrated for its remarkable performance across a diverse range of applications. In this new technology article, we will explore the JRC4558 op-amp's datasheet, pinout, features, equivalents, and its advantages & applications.

What is JRC4558 Op-Amp?

A widely-used 8-pin dual operational amplifier, the JRC4558 Op-Amp, is esteemed for its strong input impedance and substantial voltage amplification. This silicon monolithic integrated chip is available in diverse packages, such as SOP and DIP, and finds extensive application in pedal circuits due to its impressive 100dB voltage gain, 5MΩ input impedance, and power supply flexibility spanning from ±4V to 18V. Its exceptional performance and affordability have made it a favorite among engineers and enthusiasts.

This 8-pin silicon chip designates pin 8 for positive voltage and pin 4 for negative power supply. Pins 1 and 7 serve as the output terminals for the two integrated operational amplifiers, while pins 2 and 6 function as the inverting input terminals (-V) for both amplifiers. Pins 3 and 5, conversely, operate as the non-inverting input terminals (+V) for both amplifiers.

The two operational amplifiers embedded within this device are autonomous and come equipped with internal compensation, boasting superior input impedance. They can be operated efficiently with a single power supply within a broad voltage range. It's worth noting that they deviate from ideal op-amps, as their voltage gain is limited to 100dB, in contrast to the infinite voltage gain of an ideal op-amp. The maximum slew rate, indicating the output voltage change rate, stands at 1.7V/µs.

The output voltage generated by this op-amp significantly surpasses the input voltage differential. Consequently, it serves as a versatile operational amplifier for many electronic circuit applications, including comparisons, differential amplifications, and mathematical operations. Remarkably, it accomplishes these tasks with only a positive power supply of +5V, eliminating the need for a corresponding -5V negative power supply.

JRC4558 Pinout

The JRC4558, an 8-pin dual operational amplifier designed for versatile applications, is the subject of this section. Here, we provide a comprehensive overview of the pin configuration and diagram for the JRC4558 op-amp, which houses two integrated operational amplifiers interconnected as depicted in the accompanying figure.

JRC4558 Pinout Diagram

Pin configuration description of JRC4558

Pin No.	Pin Name	Pin Description
1	OUT (A)	The output pin of 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 Op-Amp A
4	Power (-Vs)	Ground or Negative supply terminal
5	Reference	The non-inverting Input Pin of Op-Amp B
6	Output	The Inverting input pin of the Op-Amp B
7	Power (+Vs)	The output pin of Op-amp B
8	+VS	Positive supply terminal

JRC4558 Features & Specifications

• The voltage supply range spans from ±5V to ±15V.

• Offers a bandwidth of 3MHz.

• Houses two operational amplifiers within its internal circuit, providing dual operational amplifiers in a single package.

• Comes in an 8-pin integrated circuit form.

• Operates within a temperature range of 0°C to 70°C.

• Boasts a speedy slew rate of 1.7V/microseconds.

• Delivers a substantial signal voltage gain of up to 100dB.

• Available in 8-pin SOP and DIP packages.

• Requires no frequency compensation.

• Prone to no latch-up issues.

• Demonstrates low current consumption.

• Compatible with both single and dual power supply setups.

• Offers a wide differential voltage range and accommodates a large common mode.

• Maintains parameter tracking across specified temperature ranges.

• Ensures phase and gain matching between its amplifiers.

• Features low-noise input transistors.

• Considerably cost-effective.

• Ideal for deployment in portable and battery-operated devices.

• Boasts industry-standard pin compatibility, making it suitable for use alongside LM358 or MC1458.

• Proven reliability in commercial equipment and devices.

Note: Comprehensive technical details can be available in the JRC4558 datasheet provided at the end of this page.

JRC4558 Equivalents & Alternatives

As an alternative to the JRC4558, you have a selection of comparable options, including the NE5532, LM158, LM158A, LM358, LM358A, LM2904, LM2904Q, LM4558, and LM747.

JRC4558 Applications

Here are the various applications where the JRC4558 op-amp finds utility:

• Automotive and ground-referenced signal amplification.

• Hold and sample amplifier applications.

• Portable and photocurrent instrumentation utilization.

• Integration into intrusion alarm systems.

• Function generator implementation.

• Deployment in comparator circuits.

• Application in instrumentation amplifiers.

• Utilization in long-duration timers and multivibrators, from microseconds to minutes and hours.

• Integration in DVD players, recorders, and professional audio mixers.

JRC4558 Datasheet

Download the JRC4558 Datasheet PDF.

Where to use JRC4558 Op-Amp?

The JRC4558 IC is a versatile solution for a wide range of general-purpose op-amp applications, including comparator usage, differential amplification, and mathematical operations. What sets this device apart is its specific design, catering to applications like transducer amplification and the simplification of DC amplification blocks within single-supply voltage systems. Notably, it can operate seamlessly directly from a standard 5V power source commonly found in digital electronics, eliminating the need for an additional -5V supply.

Moreover, this component boasts a dual-op-amp configuration, enabling it to simultaneously execute two distinct functions, proving highly advantageous in various practical applications. Its popularity among hobbyists and engineers can be attributed to its cost-effectiveness and impressive performance.

JRC4558 Input Stage

The input stage of this circuit comprises a Long-Tailed Pair (LTP) differential amplifier along with a current mirror. The components involved in this stage, including Q1, Q2, Q3, Q4, Q5, R1, R2, R3, and C1, are highlighted in red.

JRC4558 Output Stage

The Vbe Multiplier plays a crucial role in setting the bias current for the Output Stage (OPS), which functions as a Class AB push-pull emitter follower amplifier. This block, outlined in blue, consists of components Q11, Q12, R6, R7, and R8.

The primary function of the Output Stage is to provide sufficient current gain to maintain the VAS voltage potential across the low-load output impedance.

The VAS effectively drives this stage, but it's essential to be aware that variations in bias due to temperature or part variances with the same type number can lead to potential crossover distortion and quiescent current fluctuations. The output range of the JRC4558 is approximately 1.5 volts less than the supply voltage, mainly due to the Vbe characteristics of the output transistors, Q11 and Q12.

To ensure better current sharing and minimize discrepancies in internal emitter resistances of transistors, output resistors R6, R7, and R8, also known as ballast resistors, are inserted between the emitters of the output pair. These resistor values are typically low, enhancing thermal stability, preventing direct loading between complementary transistors, and maintaining steady quiescent current.

How to use JRC4558 Op-Amp?

The JRC4558 finds extensive application as a versatile op-amp suitable for amplification, differentiation, mathematical operations, and comparator circuit functions. Its design is tailored for single-voltage systems, making it well-suited for transducer applications, amplifiers, DC amplification blocks, and a wide array of analog circuits.

Let's delve into a circuit diagram showcasing the practical utilization of the JRC4558 op-amp in a differential amplifier setup. This example illustrates the conversion of a single-ended input into a differential output. The circuit's specifications include:

• A 15V supply voltage

• A 12V reference voltage

• Input voltage ranging from 2V to 10V

• Differential output of ±8V

To achieve this transformation with a 15V supply voltage, adhere to the connections in the circuit diagram above. It's noteworthy that intentional output limiting is employed to maximize linearity.

This circuit comprises two amplifiers. The first operates as a buffer amplifier, producing an output voltage denoted as Vout+. The second amplifier inverts the input voltage, generating Vout- while incorporating the 12V reference voltage. The output voltage signals from Vout+ and Vout-amplifiers span the 2V to 10V range. The differential output voltage, Vdiff, results from the difference between Vout+ and Vout-.

The equations describing the output voltages produced by the amplifiers are as follows:

Vout+ = Vin (Equation 1)

Vout- = Vref x (R4/(R3+R4)) x (1+(R2/R1)) – Vin x (R2/R1) (Equation 2)

Here, Vout+ represents the output from the buffer amplifier, Vin signifies the single-ended input voltage fed into the buffer amplifier, and Vout- corresponds to the output from the second amplifier. Vref denotes the reference voltage.

The differential output signal, Vdiff, which is the discrepancy between Vout+ and Vout-, can be expressed as:

Vdiff = Vout+ – Vout- (Equation 3)

Given that Vout+ = Vin (Equation 4), and if R1 equals R2 and R3 equals R4, then Vout- can be simplified as:

Vout- = Vref – Vin (Equation 5)

By substituting Equations 4 and 5 into Equation 3, we arrive at the following expression for Vdiff:

Vdiff = 2 x Vin – Vref (Equation 6)

Consequently, the common-mode reference voltage, Vcm, is calculated as half of the reference voltage, Vref:

Vcm = ((Vout+ – Vout-)/2) = ½Vref

JRC4558 vs. TL072 vs. NE5532 Op-Amps

We have gotten JRC4888 pinout, features, applications, and equivalents. Here are TL072 and NE5532 Op-Amps details.

JRC4558 vs TL072

Differences in Pinout and Configuration

TL072 pinout

Differences in Features

TL072 Features

• Ample common-mode voltage range.

• Minimal bias voltage.

• Negligible input offset current.

• Low noise output.

• Efficient power utilization.

• Integrated frequency compensation.

• Impressive slew rates.

• Immune to latch-up issues.

• Safeguarded against output short circuits.

Differences in Applications

TL072 Applications

• Pre-amplification in audio systems

• Inverter circuits

• Utilization in solar-related applications

• Uninterruptible Power Supplies (UPS)

• Integration into oscilloscope circuits

• Differences in Equivalents

Differences in Equivalents

TL072 Equivalents

The TL072 can be substituted with the following alternatives: LM358, NE5532, OPA827, LT1972, ADA4610-2.

JRC4558 vs NE5532

Differences in Pinout and Configuration

NE5532 Pinout

Differences in Features

NE5532 Features

• Equivalent Input Noise Voltage: Typically 5 nV/√Hz at 1 kHz

• Unity-Gain Bandwidth: Typically 10 MHz

• Common-Mode Rejection Ratio: Typically 100 dB

• High DC Voltage Gain: Typically 100 V/mV

• Peak-to-Peak Output Voltage Swing: Typically 26 V with VCC± = ±15 V and RL = 600 Ω

• High Slew Rate: Typically 9 V/μs

NE5532 Applications

• Implementation in pre-amplifier circuits

• Utilization in tone control circuits

• Integration into audio graphics equalizers

• Deployment in audio/video broadcasting devices

• Incorporation in professional audio mixers

Differences in Equivalents

NE5532 Equivalents

The NE5532 can be substituted with the following alternatives: TL072, TL1971, LM358, LM4558, RC4588, NJM4560, and LM258.

2-D Dimensions for JRC4558

Here is the 2-D dimensions for the JRC4558 8-pin SOP package:

Conclusion

The JRC4558 op-amp is a versatile and dependable component seamlessly integrated into many electronic circuits. Its remarkable performance, extensive applicability, and cost-effectiveness endeared it to engineers and hobbyists. Whether your design goals involve crafting audio apparatus, signal processing setups, or guitar effects pedals, the JRC4558 is preferred, ensuring precision and excellence in your endeavors.

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