LM2889 Lm2889 Tv Video Modulator - National Semiconductor


Posted on Feb 5, 2014

The LM231 LM331 family of voltage-to-frequency converters are ideally suited for use in simple low-cost circuits for Analog-to-digital conversion, precision frequency-to-voltage conversion, long-term integration, linear frequency modulation or demodulation, and many other functions. The output when used as a voltage-to-frequency converter is a pul


LM2889 Lm2889 Tv Video Modulator - National Semiconductor
Click here to download the full size of the above Circuit.

se train at a frequency precisely proportional to the applied input voltage. Thus, it provides all the inherent advantages of the voltage-to-frequency conversion techniques, and is easy to apply in all standard voltage-to-frequency converter applications. Further, the LM231A/LM331A attain a new high level of accuracy versus temperature which could only be attained with expensive voltage-to-frequency modules. Additionally the LM231 331 are ideally suited for use in digital systems at low power supply voltages and CAN provide low-cost Analog-to-digital conversion in microprocessor-controlled systems. And, the frequency from a battery powered voltage-to-frequency converter CAN be easily channeled through a simple photo Isolator to provide isolation against high common mode levels. The LM231 LM331 utilize a new temperature-compensated band-gap reference circuit, to provide excellent accuracy over the full operating temperature range, at power supplies as low as 4. 0V. The precision Timer circuit has low bias currents without degrading the quick response necessary for 100 kHz voltage-to-frequency conversion. And the output are capable of driving 3 TTL loads, or a high voltage output up to 40V, yet is short-circuit-proof against VCC.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    LED display Digital Calendar AT89C2051
    Rf-modulator
    dc servo motor controller
    3-Band Active Audio Tone Control Circuit
    200mA Buck-Boost Synchronous DC/DC Converters
    early philips colour tv
    Computer microphone circuit diagram
    XTR110 circuit diagram using an external PNP transistor
    Electronic watchdog circuit



    Top