311. The p-type substrate in a monolithic circuit should be connected to—

1. 1. Any dc ground point

   
   
   

   2. The most negative voltage available in the circuit

   
   
   

   3. The most positive voltage available in the circuit

   
   
   

   4. No where, i.e. be floating

   
   
   

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   NA

   Correct Option: B

   NA

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312. Silicon dioxide layer is used in IC chips for—

1. 1. Providing mechanical strength to the chip

   
   
   

   2. Diffusing elements

   
   
   

   3. Providing contacts

   
   
   

   4. Providing mask against diffusion

   
   
   

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   NA

   Correct Option: D

   NA

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313. A single monolithic IC chip occupies area of about—

1. 1. 20 mm²

   
   
   

   2. 200 mm²

   
   
   

   3. 2000 mm²

   
   
   

   4. 20,000 mm² s
      

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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314. The chemical react on involved in epitaxial growth in IC chips takes place at a temperature of about—

1. 1. 500ºC

   
   
   

   2. 800ºC

   
   
   

   3. 1200ºC

   
   
   

   4. 2000ºC

   
   
   

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   NA

   Correct Option: C

   NA

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315. In n-well CMOS fabrication substrate is—

1. 1. Lightly doped n-type

   
   
   

   2. Lightly doped p-type

   
   
   

   3. Heavily doped n-type

   
   
   

   4. Heavily doped p-type
      

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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