LM1295 National Semiconductor, LM1295 Datasheet
LM1295
Manufacturer Part Number
LM1295
Description
DC Controlled Geometry Correction System for Continuous Sync Monitors
Manufacturer
National Semiconductor
Datasheet
1.LM1295.pdf
(11 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM12951
Manufacturer:
MATSUO
Quantity:
35 000
Part Number:
LM1295N
Manufacturer:
NS/国半
Quantity:
20 000
© 1999 National Semiconductor Corporation
LM1295
DC Controlled Geometry Correction System for
Continuous Sync Monitors
General Description
The LM1295 is specifically designed for use in a continuous
sync monitor. The injection-locked vertical oscillator oper-
ates from 50 Hz to 170 Hz, covering all known video moni-
tors. A differential output current is provided in order to pre-
vent ground interaction.
The IC provides two outputs composed of the summation of
DC controlled 1st and 2nd order output terms. The first out-
put corrects for EW pincushion and trapezoid. The second
corrects for parallelogram and bow.
A DC controlled output is provided for vertical dynamic focus
correction.
The IC is packaged in a 24-pin narrow DIP package and op-
erates on a single 12V power supply.
Connection Diagram
DS012324
FIGURE 1. Order Number LM1295N
See NS Package Number N24C
Features
n Vertical scanning frequency 50 Hz–170 Hz
n DC controlled correction term amplitudes
n Up to 125 kHz bandwidth for dynamic input signals
n Minimum external parts count
n Multiple IC connection for convergence applications
n Stable vertical amplitude over temperature
n Compatible with the LM1291 Horizontal PLL in a H/V
n Dynamic vertical deflection correction for second anode
n Both positive and negative going correction signals
flexibility
system
high voltage drop
DS012324-1
www.national.com
April 1999