Synapse Design Analog Design Engineer Interview Questions and Answers

Q1. As infineon is Produc based company and Every Person Responsible for complete Chip Testing instead on 1 specific Block. so Interview Asked Basic Tests like continuity, DPS short , Vil/Vih , Voh/Vih , Lekag...read more
Ans. Above all the Topics prepare clearly
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Q2. Basics of Tester Hardwares and why you join in INFIN ? Why want to Change the company ? Why should we we hire ? Tell me about any challenges faced in previous organisation and Work status ? Any protocol...read more
Ans. These are Main topics you should good before going to attend the interview
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Q1. Same as Previous Round but did by Manager in deep level on Basics and work
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Q1. General Discussion about Works did in previous organisation and Basics
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Q1. General Discussion and Salary Negotiation
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Analog circuits , opamp, mosfets , Rc circuits

Q1. Nmos design and working
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NMOS (N-channel Metal-Oxide-Semiconductor) is a type of MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) that uses n-type semiconductor for the channel.
• NMOS transistors are used in digital and analog circuits for switching and amplification.

• In NMOS design, the gate is made of metal, the insulator is made of oxide, and the semiconductor is n-type.

• NMOS transistors operate by applying a voltage to the gate termi...read more
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Q2. CMOS circuit and design along with VTC characteristics
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CMOS circuits are widely used in integrated circuits for their low power consumption and high noise immunity. VTC characteristics show the relationship between input and output voltage.
• CMOS circuits consist of complementary pairs of p-type and n-type MOSFETs, allowing for low power consumption and high noise immunity.

• VTC (Voltage Transfer Characteristic) shows the relationship between input and output voltage in a CMOS...read more
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Practice on hackerrank, they send hackerrank link for screening round.

Q1. C, os, embedded questions
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Q1. C, data structures,os
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Q1. Previous jobs, salary discussion, relocation
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Q1. Function to write data to some memory location which can dynamically allocate memory and return the address details where data is present .
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Function to dynamically allocate memory and write data to a memory location, returning the address details.
• Use malloc() or calloc() to dynamically allocate memory

• Use memcpy() or strcpy() to write data to the allocated memory

• Return the address details where data is present
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Q2. Memory Management and mapping in different scenarios.
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Memory management involves allocating and deallocating memory efficiently, while mapping involves associating memory addresses with physical locations.
• Memory management is crucial for optimizing performance and preventing memory leaks.

• Mapping involves translating virtual memory addresses to physical memory locations.

• Different scenarios may require different memory management strategies, such as stack allocation vs heap...read more
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Q3. Program to find length of bits assigned in memory using recursion.
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Program to find length of bits assigned in memory using recursion.
• Define a recursive function to count the bits in memory

• Base case: if input is 0, return 0

• Recursive case: return 1 + function(input / 2)
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Q1. Volatile usage w.r.t to gpio initialization, how volatile can help in overwriting compiler optimization.
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Volatile keyword prevents compiler optimization by telling the compiler that the variable's value can change unexpectedly.
• Volatile keyword is used to indicate that a variable may be changed unexpectedly, such as in the case of hardware registers.

• When initializing GPIO pins, using volatile keyword ensures that the compiler does not optimize away the initialization code.

• Without volatile keyword, the compiler may optimize...read more
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Q2. Union usage for bit assignments.
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Unions in C/C++ can be used for bit assignments by allowing multiple variables to share the same memory location.
• Unions allow different data types to be stored in the same memory location, which can be useful for bit manipulation.

• By defining a union with multiple variables of different data types, you can access the same memory location using different variable names.

• For example, you can use a union to access individua...read more
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Q3. Explain static const usage with an example .
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static const is used to declare constants that are known at compile time and cannot be modified
• static const int MAX_SIZE = 100; // declaring a constant integer

• static const double PI = 3.14159; // declaring a constant double

• static const char* MESSAGE = "Hello, World!"; // declaring a constant string
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Q4. Program to find the sum of all the digital in the number .
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Program to find the sum of all the digits in a number.
• Iterate through each digit in the number and add them together.

• Convert the number to a string to easily access each digit.

• Use modulo operator to extract each digit from the number.

• Handle negative numbers by taking the absolute value before processing.
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Q5. Create a linkedlist check if list is circular if not then reverse it .
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Check if a linked list is circular, if not reverse it.
• Create two pointers, one moving at double the speed of the other to detect a cycle

• If a cycle is detected, the list is circular. If not, reverse the list by changing the pointers' directions
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Q1. Define Architecture to process real-time data .
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Architecture to process real-time data involves designing systems that can efficiently collect, process, and analyze data in real-time.
• Utilize distributed systems to handle high volumes of data in real-time

• Implement stream processing frameworks like Apache Kafka or Apache Flink

• Use microservices architecture for scalability and flexibility

• Employ in-memory databases for fast data retrieval

• Ensure fault tolerance and data
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Q2. Various data filtering techniques.
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Various data filtering techniques include sorting, grouping, aggregating, and applying filters based on specific criteria.
• Sorting: arranging data in a specific order, such as ascending or descending

• Grouping: categorizing data into distinct groups based on common attributes

• Aggregating: combining multiple data points into a single value, such as summing or averaging

• Filtering: selecting only the data that meets certain cr
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Q3. Mock code to initialize gpio using hal functions as well as write a function to set and clear gpio status .
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Initialize and control GPIO using HAL functions in embedded systems.
• Use HAL_GPIO_Init() function to initialize GPIO pins

• Use HAL_GPIO_WritePin() function to set or clear GPIO status

• Example: HAL_GPIO_Init(&GPIO_InitStruct)

• Example: HAL_GPIO_WritePin(GPIOx, GPIO_PIN_x, GPIO_PIN_SET)
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Q4. Structure which can take input as 0 or 1 , based on the input traverse the linkedlist and return the decimal equivalent of the traversed data .
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Traverse a linked list based on input 0 or 1 to return decimal equivalent.
• Create a function that takes input 0 or 1 and traverses the linked list accordingly.

• For each node in the linked list, multiply the current decimal value by 2 and add the data of the node if input is 1.

• Return the final decimal value after traversing the linked list.
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Q1. Coding question on dll and bits
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Q2. Detect and remove loop in ll
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To detect and remove a loop in a linked list, we can use Floyd's Cycle Detection Algorithm.
• Use two pointers, slow and fast, to traverse the linked list

• If there is a loop, the fast pointer will eventually meet the slow pointer

• Once the loop is detected, reset one of the pointers to the head and move both pointers at the same pace until they meet again to find the start of the loop
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