LM1880 Datasheet | National Semiconductor

Description The LM1880 uses patible Linear I2L technology to produce the first T V horizontal and vertical processing system which pletely eliminates the hold controls The heart of the system is a precision 32 times horizontal frequency VCO which is designed to use a low-cost ceramic resonator as a tuning element The VCO signal is divided down in the horizontal section to produce a pre-driver output which is locked to negative sync by means of an on-chip phase detector The vertical output ramp is injection-locked by vertical sync subject to a sync window derived from the vertical countdown section A gate pulse centered on the chroma burst is also provided Features Y No frequency set-up required for horizontal or vertical Y Ceramic resonator frequency reference Y Accurate horizontal pre-driver duty cycle Y Vertical sync window referenced to horizontal Y Precise interlaced vertical output Y APC loop parameters pletely adjustable Y Vertical retrace time adjustable Y Chroma burst gate output Y Internal voltage regulator Y Improved vertical lock time Block Diagram C1995 National Semiconductor Corporation TL H 7915 TL H 7915 - 1 RRD-B30M115 Printed in U S A Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Current (Pin 9) 40 m A Output Voltage (Pins 8 12 13) 12V Output Current Pin 8 Pin 12 Pin 13 50 m A 15 m A 10 m A Sync Input Voltage (Pins 10 14) 5 Vp-p Sawtooth Input Voltage (Pin 1) 5 Vp-p Package Dissipation TA e a25 C Above TA e 25 C Derate Based on TJ(MAX) e a150 C and i JA e a90 C W 1400 m W Storage Temperature Range b55 C to a150 C Operating Temperature Range 0 C to a70 C Lead Temperature (Soldering 10 sec ) a260 C Electrical Characteristics (Test Circuit all SW normally pos 1 TA e 25 C Va e 12V) Parameter Conditions Min Typ Regulated Voltage (Pin 9) 82 87 Supply Current (Pin 9) VCO Reference Voltage...