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LM1229 データシート(PDF) 11 Page - Texas Instruments |
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LM1229 データシート(HTML) 11 Page - Texas Instruments |
11 / 28 page OBSOLETE LM1229 www.ti.com SNOSAH0D – MARCH 2005 – REVISED APRIL 2013 Pin Pin Name Schematic Description No. 11 FOCUSOUT FOCUSOUT is used for dynamic focus adjustment. The peak to peak amplitude is register controlled and if it is used for both horizontal and vertical dynamic focus, their amplitudes will be controlled proportionately. VCC & GND Power supply and ground pin for all the LM1229. Note the recommended charge storage and high frequency capacitors which should be as close to pins wherever possible. 14 HDRIVEOUT This is the horizontal drive output. When this output is low, the horizontal output transistor is on and a positive edge at pin 14 starts the flyback pulse. The duty cycle slowly increases to 50% when power is applied. The output sink current should not exceed 10 mA. 15 SCL The I2C compatible clock line. A pull-up resistor of about 4.7 k Ω should be connected between this pin and VCC. A resistor of at least 100Ω should be connected in series with the clock line for additional ESD protection. 16 SDA The I2C compatible data line. A pull-up resistor of about 4.7 k Ω should be connected between this pin and VCC. A resistor of at least 100Ω should be connected in series with the data line for additional ESD protection. 18 Horizontal The input is a threshold detector at approximately Flyback 2.4V. RH should be large enough to limit the combined peak current during flyback to a few milliamperes in the zener diode in accordance with the zener power rating. It may be desirable to add a resistor from VCC or GND to pin 18 to offset the switching point up or down by a small amount. Be sure to start with small offsets and work up from there. Copyright © 2005–2013, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: LM1229 |
同様の部品番号 - LM1229 |
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同様の説明 - LM1229 |
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