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RC4558 Dual General Purpose Op-amp

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Pin Description

Pin Number

Pin Name

Description

1

OUTPUT1

Output of Op-Amp 1

2

INPUT1-

Inverting Input of Op-Amp 1

3

INPUT1+

Non-Inverting Input of Op-Amp 1

4

VEE-,GND

Ground or Negative Supply Voltage

5

INPUT2+

Non-Inverting Input of Op-Amp 2

6

INPUT2-

Inverting Input of Op-Amp 2

7

OUTPUT2

Output of Op-Amp 2

8

VCC

Positive Supply Voltage

 

RC4558 Dual Op-Amp IC Features and Specifications

  • Dual Package General Purpose Operational Amplifier
  • Dual Version of LM741 Op-Amp
  • Operating Voltage: -15V to +15V
  • Supply current – 6.5mA (Low Power consumption)
  • Common Mode input voltage is ±14V typically
  • CMRR: 90dB
  • Bandwidth: 3MHz
  • Single supply for two op-amps enables reliable operation
  • Short circuit protected outputs
  • Operating ambient temperature – 0˚C to 70˚C
  • Available packages: TO-99, CDIP, DSBGA, SOIC, PDIP,  DSBGA

Equivalent single Op-Amp IC

LM741

Alternatives Dual Op-Amp IC

LM358, MCP602, LM2904M, NE5532, OPA2228, OPA2134 and OPA2604

 

Brief Description

The RC4558 is a Dual package version of the commonly used LM741 Op-Amp, both the IC share the same electrical characteristics except for that there is no offset and null option in the RC4558 Op-Amp.  It has a high common mode Input Voltage of ±14V hence the inverting and non-inverting pins can be driven upto this voltage provided they are less than the operating voltage.

This Op-Amp does not have a latch-up problem and hence is ideal to be used in voltage follower applications. It also has internal frequency compensation and short circuit protection in-built and hence requires minimum number of components to be application ready.   Because of these characteristics these ICs are commonly found inside DVD players and Guitar amplifiers. You can also find some Geiger counter circuits and Audio amplifier or comparator circuits based on this IC. Also since the IC has same properties as LM741 all the circuits with LM741 can be replaced with a RC4558.

Be advised that the 4558 Op-Amps belongs to the old 1485 Op-Amp series and does not have great specs compared to modern Op-Amps. They are less priced and consume very low current but are reported to have some jitters (slow and sloppy) when it comes to quality. But again remember that modern Op-Amps like OPA2134 will consume 2-4 times more current than RC4558.

 

Applications

  • Transducer Amplifiers
  • Conventional op-amp circuits
  • Integrator, Differentiator, Summer, adder, Voltage follower, etc.,
  • DC gain blocks, Digital multimeters, Oscilloscopes
  • Comparators (Loop control & regulation)

 

2D-Model

2D Model of RC4558