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Recent content by Amninder

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    USB Audio Controller for Audio Rates upto 192KHz

    Hi, I am looking for a USB 2.0 Audio controller/converter that can support audio Tx/Rx rates upto 192KHz over I2S and also provides I2C control interface for external CODEC. Has anyone had such a requirement and know/recommend any products in the market that would support it? Regards Amninder
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    Is Audio MCLK always = 256 * Fs

    Thanks for the reply, Don. So, is there a criteria to choose one multiple over other. For example, what would be pros/cons if I choose say 512 over 256 * Fs for a I2S based audio system? Regards Amninder
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    Is Audio MCLK always = 256 * Fs

    I am new to Audio Systems and want to know if MCLK in audio systems is always equal to 256* MCLK . If Yes, who so (Is it due to some oversampling requirement in CODECs). If not, how to determine this multiplication factor?
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    What happens when capacitor one side is floating?

    The charging equation of capacitor when a square signal with amplitude Vi is applied is :- Vc = Vi(1-e-t/RC) where Vc is the Voltage across capacitor Now the resistance seen by a floating capacitor is infinite. Putting R = infinite in the above equation gives Vc = 0. Now, in this case, Vc could...
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    IQ Modulation in Frequency Domain

    @vfone :- Thanks a lot. It was a joyride reading that article.
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    IQ Modulation in Frequency Domain

    Hi All, I am trying to understand the concept of IQ modulation and is able to understand why the In Phase and Quadrature Phase components don't interfere in time domain but I am unable to see the same phenomena in frequency domain. Suppose we want to transmit digital signal 11...
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    Masters level project in analog design

    Thanks for you reply saad. I want to ask you if we can include digital modulation concepts in this or it is a purely analog project. Can we extend it for RF . Amninder
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    Transconductance VS Vgs in MOSFET

    Thanks a lot to all for helping. @ fubsyman and freescale_bharat , I agree with your explanation and it seems to be the best possible solution. But this approach indicates that transconductance is characteristic of the Circuit used and not the transisitor itself. In other words, say we...
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    Gain Vs current in Cadence

    Hi All, I am trying to design a common gate amplifier using cadence for gain > 30db and Bw >1 Ghz. I am using a current mirror to bias my NMOS amplifier transistor. I want to know if there is any way that I can plot the Gain of my amplifier Vs Current because I know that the...
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    Masters level project in analog design

    Hi everyone, Can you please suggest me a topic for my masters' project in analog IC design.I am looking for a project that could combine the concepts of analog design and digital modulation circuit. In my communication class, I learnt many block levels circuits used in...
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    sampling rate of a DAC (Digital to analog Converter)

    DSP Can anybody explain me what is meant by sampling rate of a DAC (Digital to analog Converter). Where is sampling done in DAC and what is the purpose of it?
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    How can a CMOS be used as an amplifier?

    Hi, I am new to the Analog field. I was reading the Book by Behzad razavi "Design of Analog CMOS ICs'. I understood how an nMOS and a pMOS can act like an amplifier individually . But then I came to know that the CMOS technology is used for designing RF chips. Can anybody tell me...
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    Transconductance VS Vgs in MOSFET

    fet transconductance Thanks to all for helping! But I still have one doubt....The width of a transisitor is a physical quantity that remains constant when the design of a chip is finished. So, Is there any way to keep the Drain current constant by varying the Vgs. Can we do it by varying the...
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    Transconductance VS Vgs in MOSFET

    transconductance mosfet Hi, I am new to this filed on analog design. I am reading the book by Behzad Razavi on "Design of Analog CMOS Integradted Circuits" While reading on MOSFETs, I encountered an equation for transconductance which says that : gm = 2 * Id / Vgs - Vth .Its explanation...
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