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What is the minimum number of terminals required in an IC package containing four operational amplifiers (quad op amps)?

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What is the minimum number of terminals required in an IC package containing four operational amplifiers (quad op amps)?

(a) 12

(b) 13

(c) 14

(d) 15

This question was posed to me during an interview.

My query is from The Ideal Operational Amplifiers topic in portion Operational Amplifiers of Electronic Devices & Circuits

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Best answer
Right choice is (c) 14

The best explanation: The minimum no of pins required by dual-op-amp is 8. Each op-amp has 2 input terminals(4 pins) and one output terminal(2 pins). Another 2 pins are required for power.

Similarly, The minimum no of pins required by dual-op-amp is 14: 4*2 + 4*1 + 2 = 14.

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