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LM1292N Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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LM1292N Datasheet(HTML) 3 Page - National Semiconductor (TI) |
3 / 10 page Electrical Characteristics See Test Circuit (Figure 2); T A = 25˚C; VCC = 12V; V14 = 0V; V15 = 0V unless otherwise stated (Continued) Parameter Conditions Typical (Note 6) Limit (Note 7) Units H Drive Low Level Output Voltage (Pin 19) I OL = 100 mA 0.7 V H Drive EN Low Level Input Voltage (Pin 14) H Drive Output Active 0.8 V (Max) H Drive EN High Level Input Voltage (Pin 14) H Drive Output Open (Unlatched) 2.0 V (Min) X-Ray Shutdown Threshold Voltage (Pin 15) V 15 Above Threshold, H Drive Output Open (Latched) 1.8 1.7 1.9 V (Min) V (Max) H/HV Sync Out Propagation Delay Change H/HV In vs Comp Video In 32 ns Clamp Pulse Width (Back Porch)R SET = 15 kΩ;VSET = 0V 0.4 µs (Back Porch)R SET = 15 kΩ;VSET = 1.5V 1.4 µs (Sync Tip)R SET = 15 kΩ;VSET = 4V 0.6 µs Clamp Pulse Delay (Back Porch) Trailing Edge H/HV Sync In to Leading Edge Clamp Pulse 0.1 µs (Sync Tip) Leading Edge H/HV Sync In to Leading Edge Clamp Pulse 0.025 T H s Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Note 2: Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may de- grade when the device is not operated under the listed test conditions. Note 3: All voltages are measured with respect to GND, unless otherwise specified. Note 4: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA and the ambient temperature, TA. The maximum allowable power dissipation at any elevated temperature is PD = (TJMAX −TA)/θJA or the number given in the Absolute Maximum Ratings, whichever is lower. For this device, TJMAX = 150˚C. The typical thermal resistance (θJA) of these parts when board mounted follow: LM1292N 50˚C/W. Note 5: Human Body model, 100 pF capacitor discharged through a 1.5 k Ω resistor. Note 6: Typical specifications are at TA = 25˚C and represent most likely parametric norm. Note 7: Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level). Note 8: The typical duty cycle range allowed for the H sync tip is from 5%–26%. Note 9: The standard deviation, σ, of the flyback pulse period is measured with HP 53310A Modulation Domain Analyzer. Peak-to-peak jitter of the flyback pulse is defined by 6 σ. Note 10: Phase Limits: , expressed as a fraction of the horizontal period TH, where TDFB is the horizontal output transistor turn-off delay from the rising edge of H Drive to the FBP peak. A positive phase value represents a phase lead of the FBP peak with reference to the leading edge of H sync. www.national.com 3 |
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