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Clock & timing

Clock & timing

Clock & timing forum

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Texas Instruments (TI) Clock & timing support forum is an extensive online knowledge base where millions of technical questions and solutions are available 24/7. You can search clock & timing IC content or ask technical support questions on everything from clock synchronizers and generators to clock buffers and timers. Find the right solution for your circuit design challenges by using our TI E2E™ support forums that are supported by thousands of contributing TI experts.

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Frequent questions
  • [FAQ] RF synthesizers: If the datasheet shows all 1’s and 0’s in the register maps, do I have to program them?

    Noel Fung
    Noel Fung
    Some registers in the register maps do not have configurable register bits but they are fixed to some 1's and 0's, do we have to program these registers?
    • Answered
    • over 4 years ago
    • Clock & timing
    • Clock & timing forum
  • [FAQ] RF synthesizers: Can I modulate the internal VCO of a RF synthesizer?

    Noel Fung
    Noel Fung
    I want to do FM modulation with the internal VCO, is this possible? Can you tell me how to feed the modulation signal to the VCO?
    • Answered
    • over 4 years ago
    • Clock & timing
    • Clock & timing forum
  • [FAQ] How do I design a pulse width modulator (PWM) circuit using LMC555, TLC555, LM555, NA555, NE555, SA555, or SE555?

    Ron Michallick
    Ron Michallick
    Other Parts Discussed in Thread: LM293 How does the PWM example in the data sheet work? What are the limitations of the data sheet PWM example? Is there a way to improve linearity and duty cycle range?
    • over 5 years ago
    • Clock & timing
    • Clock & timing forum
  • [FAQ] How do I design a-stable timer, oscillator, circuits using LMC555, TLC555, LM555, NA555, NE555, SA555, or SE555?

    Ron Michallick
    Ron Michallick
    Other Parts Discussed in Thread: LMC555 , NE555 , LM555 , NA555 , TLC551 , SE555 , TLC552 , TLC555 , SA555 , CD4060B , CD4024B , CD4040B , CD4020B What is the difference between the part numbers? How is the output frequency and duty cycle set? Why…
    • Answered
    • over 5 years ago
    • Clock & timing
    • Clock & timing forum
  • [FAQ] How do I design monostable timer circuits using LMC555, TLC555, LM555, NA555, NE555, SA555, or SE555?

    Ron Michallick
    Ron Michallick
    Other Parts Discussed in Thread: LMC555 , NE555 , LM555 , NA555 , TLC551 , SE555 , TLC552 , TLC555 , SA555 , CD74HC4060 , SN74LV8154 This FAQ covers mono-stable circuits using the LM555, NA555, NE555, SA555, and SE555 timers that are called LM, NA, NE…
    • over 5 years ago
    • Clock & timing
    • Clock & timing forum
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View FAQ threads
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  • Answered

    LMX2594EVM: Input Signal requirement 0 Locked

    264 views
    1 reply
    Latest over 3 years ago
    by Noel Fung
  • Answered

    LMK00304: LMK00304 only has the Additive RMS Jitter parameter of 1MHz to 20MHz in HCSL output mode, is there any Additive RMS Jitter parameter of 12KHz to 20MHz (or 10KHz to 20MHz)? 0 Locked

    369 views
    4 replies
    Latest over 3 years ago
    by Julian Hagedorn
  • Not Answered

    Reprogramming LMX2487 EVM to LMX2485E EVM 0 Locked

    322 views
    1 reply
    Latest over 3 years ago
    by Ajeet Pal
  • Not Answered

    NC pins 0 Locked

    298 views
    6 replies
    Latest over 3 years ago
    by Ajeet Pal
  • Suggested Answer

    LMK03328: Maximum jitter for the input clock 0 Locked

    329 views
    3 replies
    Latest over 3 years ago
    by Ajeet Pal
  • Suggested Answer

    LMK00804B-Q1: 25MHz clock generation for FPGA and ETHERNET PHY 0 Locked

    723 views
    3 replies
    Latest over 3 years ago
    by Jennifer Bernal
  • Suggested Answer

    LMK05318B: Some questions about LMK05318B 0 Locked

    350 views
    3 replies
    Latest over 3 years ago
    by Kia Rahbar
  • Suggested Answer

    LMK1C1104: Output Impedance Change Consult 0 Locked

    301 views
    2 replies
    Latest over 3 years ago
    by Jennifer Bernal
  • Answered

    LMK1C1108: Simulate with PSpice for TI possible? 0 Locked

    443 views
    1 reply
    Latest over 3 years ago
    by Kia Rahbar
  • Suggested Answer

    LMK04803: The parameter "PLL2_N_CAL" generated by the TICS Pro and Code loader are different. Which is corect? 0 Locked

    373 views
    2 replies
    Latest over 3 years ago
    by Li Xiaoqing
  • Suggested Answer

    LMK61E2: Difference between LMK61E2-I5SIAR and LMK61E2-I1SIAR 0 Locked

    282 views
    1 reply
    Latest over 3 years ago
    by Alexandria Patton
  • Suggested Answer

    LMK04821: Clock configuration problem 0 Locked

    489 views
    5 replies
    Latest over 3 years ago
    by Ajeet Pal
  • Answered

    LMK04832: R364, R365 and R366 0 Locked

    262 views
    5 replies
    Latest over 3 years ago
    by Ajeet Pal
  • Suggested Answer

    CDCE813-Q1: peak to peak TIE jitter 0 Locked

    349 views
    3 replies
    Latest over 3 years ago
    by Julian Hagedorn
  • Suggested Answer

    LMX2615-SP: Delay of RFout and SysrefReq 0 Locked

    293 views
    1 reply
    Latest over 3 years ago
    by Ajeet Pal
  • Suggested Answer

    LMK04208: Distribution mode additive jitter 0 Locked

    354 views
    1 reply
    Latest over 3 years ago
    by Ajeet Pal
  • Suggested Answer

    LMK04826: Application problem 0 Locked

    198 views
    1 reply
    Latest over 3 years ago
    by Ajeet Pal
  • Suggested Answer

    CDCDB800: TI solution suggestion 0 Locked

    261 views
    1 reply
    Latest over 3 years ago
    by Ajeet Pal
  • Suggested Answer

    LMX2582: Device Configured for Frequency from 4360MHz to 5000MHz with Maximum Output power from PLL 0 Locked

    278 views
    2 replies
    Latest over 3 years ago
    by Noel Fung
  • Suggested Answer

    LMX2581: Phase Noise Performance 0 Locked

    260 views
    1 reply
    Latest over 3 years ago
    by Noel Fung
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