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Recent content by srinivasa

  1. S

    What are Voltage Levels For LVDS and RS422 signals

    Thanks for your reply , First i am converting the RS422 to LVTTL and then LVTLL to LVDS .But i want the exact information on volatge levels , what are the voltage range LVDS and RS422 can accept. thanks srinivasa
  2. S

    What are Voltage Levels For LVDS and RS422 signals

    Hi What is the exactly the difference voltage levels for 1 and 0. Thanks Srinivasa
  3. S

    What are Voltage Levels For LVDS and RS422 signals

    Hi What are voltage levels for LVDS and RS422 .Means what is the voltage level for 1 and 0 .for example in TTL(input) logic 1 is represented above 2.4V and 0 it is < 0.8 . and In RS232 1 is -5 to -15 and for 0 it is +5 to +15. i want to interface RADAR(RS422) with FPGA(LVDS). If anyone know...
  4. S

    How to Calculate time for time varying signal using timers

    Hi I am working on 8051F062 micro controller.there are two ADC are there. a analog signal ia applied to ADC. signal specifications are below. Volatge:±5v Frequency:1Hz ±20%. Step time:12 ms ±20% Now the time period of signal is 1sec. and it is not constant ,it is varying ±20%(tolerence) and...
  5. S

    works at 1Mhz but not above 10Mhz

    R33 =18.7K and R34=1k ,votage divider gives a 0.25v(at pin 3) and voltage applied at J2 is 6db (1.262Vpp,sine wave) I am measuring the LVDS signals(each) with respect to GND. for 1Mhz output is 0 to 3.3V square wave. The Osilloscope has 100MHz band width. Any techniques are there to measure the...
  6. S

    works at 1Mhz but not above 10Mhz

    Hi I am facing a problem in my project. i attached circuit, and datasheets. In my circuit when i apply a signal of 1 MHZ at J2 (BNC connector) and i can see the output signal is square wave (LVDS signal) at U23 pins 2 and 3 on oscilloscope e.When i apply a signal above the 10Mhz i am not able...
  7. S

    how to represent 16 bit data into 12 bit data?

    Hi Thanks for reply,my micro controller is c8051f064 ,it is a 8 bit micro controller. am i writing in assembly, what i understood from your reply is that we can right shift 4 times the 16 bit data ,can u explain this point how it is getting converted to 12 bit data Thanks srinivasa
  8. S

    how to represent 16 bit data into 12 bit data?

    Hi Thanks for reply, in my micro controller there are two 16-ADC are there. now i want to subtract the these two 16 bit outputs(ADC1-ADC2) and then convert the result into 12-bit output. if u have any idea how to do it ,please give the information thanks srinivasa
  9. S

    What are the suggestions a designer give to PCB designer

    hi can any give me information for , what are conditions or suggestions a circuit designer will give to a PCB designer or who do PCB LAYOUT ,like what width should for the track , what is the size of mounting hole...like this information i want thanks in advance srinivasa
  10. S

    how to represent 16 bit data into 12 bit data?

    Hi can any one give me information how to convert a 16 bit digital data into 12 bit data. thanks in advance srinivasa
  11. S

    How to connect the digital GND and Analog GND

    Hi Please anyone guide me how to connect the digital GND and analog GND.Any procedure is there for connection like between them a ferrite bead . Thanks in advance Srinivasa
  12. S

    Recover AC Signal from DC signal

    HI I want to know how can we recover a AC Signal which is riding on a DC Signal and eliminate the DC Signal. Example A DC Signal of 60v on which,a AC Signal of 20vpp is riding , now i want to remove the DC signal and capture the AC signal, , please provide me any information on this. Thanks...
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