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LM1558 Dual Operational Amplifier

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The LM1558 are general purpose dual operational amplifiers. The two amplifiers inside this single IC share a common bias network, and power supply leads. Otherwise, their operation is completely independent.

 

LM1558 Pin Configuration

Pin Number

Pin Name

Description

1

OUTPUT-A

Output of Op-Amp 1

2

INPUT- A(-)

Inverting Input of Op-Amp 1

3

INPUT- B(+)

Non-Inverting Input of Op-Amp 1

4

VEE GND

Ground or Negative Supply Voltage

5

INPUT- B(+)

Non-Inverting Input of Op-Amp 2

6

INPUT- B(-)

Inverting Input of Op-Amp 2

7

OUTPUT B

Output of Op-Amp 2

8

VCC

Positive Supply Voltage

 

LM1558 features and specifications

  • Dual Op-Amp with JFET Input
  • Supply Voltage: 6V to 44V
  • Supply Current: 1.5mA
  • GBP - Gain Bandwidth Product: 1 MHz
  • CMRR - Common Mode Rejection Ratio: 70 dB to 90 dB
  • SR - Slew Rate: 0.5 V/us
  • Vos - Input Offset Voltage: 5 mV
  • No Frequency Compensation Required
  • Available in 8-pin TO-99 and PDIP Package

 

Note: Complete Technical Details can be found at the LM1558 datasheet given at the end of this page.

 

Equivalent for LM1558: TL074, LF393N, MCP6002

 

LM1558 JFET Input Op-Amp

The LM1558 is a Dual Input JEFET from Texas Instruments. Since the Op-Amp inputs are feed through JFET, they provide high input impedance and wide bandwidth (1MHz) with a 0.5V/uS slew rate. It also provides low input noise and biased current making the IC suitable for audio amplifier applications.

 

The Op-Amp is designed to be used in dual-supply voltage (±22V), using with single supply will limit the output voltage to 0.7V for low and 1.5V for high. Hence the Op-Amp is more widely used in the analog circuits or audio circuits. The digital circuit equivalent for LM1558 will be MCP6002 from Microchip.

 

Applications

  • Low-noise Audio circuits
  • High-Input Impedance designs
  • Sample and Hold Circuit
  • High-Speed Integrator

 

2D-Model

Dimensions for LM1558 IC is given below. These dimensions are for the 8-Pin GDIP package. If you are using a different package IC, please refer to the LM1558 datasheet.

 LM1558 Dimensions

Component Datasheet

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