MICROELECTRONIC CIRCUITS W/LAB MAN >P<
MICROELECTRONIC CIRCUITS W/LAB MAN >P<
8th Edition
ISBN: 9780197529362
Author: SEDRA
Publisher: OXF
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Chapter 2, Problem 2.1P
To determine

The minimum number of pins needed for a dual-op-amp and quad-op-amp IC package.

Expert Solution & Answer
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Answer to Problem 2.1P

The minimum number of pins needed for dual-op-amp and quad-op-amp IC package will be 8 and 14 respectively.

Explanation of Solution

A single op-amp must have at least 5 pins: 2 pins for the inverting and non-inverting inputs, 1 pin for the output and 2 pins for the positive and negative power supply.

For a dual-op-amp package, the number of pins needed will be 8. This can be explained in the following way: for the 2 op-amps, there will be 4 distinct inputs and 2 distinct outputs. This makes the number of pins required 6. Now, the common positive and negative power supply will be used for both the op-amps. This makes further 2 pins, making the total pins of IC package equal to 8.

For quad-op-amp package, the number of pins needed will be 14. 4 op-amps will have 8 distinct input pins and 4 distinct output pins. This makes the tally to 12. Now, the common positive and negative power supply will be used to energize the 4 op-amps. Therefore, the total number of pins for the IC package will be 14.

Therefore, the minimum number of pins needed for dual-op-amp and quad-op-amp IC package will be 8 and 14 respectively.

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