LM1296N National Semiconductor, LM1296N Datasheet

no-image

LM1296N

Manufacturer Part Number
LM1296N
Description
Raster Geometry Correction System for Multi-Frequency Displays [Life-time buy]
Manufacturer
National Semiconductor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM1296N
Manufacturer:
NS/国半
Quantity:
20 000
© 1998 National Semiconductor Corporation
LM1296
Raster Geometry Correction System for Multi-Frequency
Displays
General Description
The LM1296 is a monolithic IC for use in the raster scanning
circuitry of a multi-frequency CRT monitor. The IC provides
an S-corrected sawtooth waveform and a variable DC output
voltage. These two outputs drive the vertical deflection am-
plifier. It also provides another waveform for East-West ge-
ometry correction which includes pincushion, corner, and
trapezoid controls. The geometry correction is controlled by
DC input voltages from 0V to 4V.
The raster height and the raster vertical position can be con-
trolled by two DC voltage input pins that adjust the sawtooth
waveform amplitude and the variable DC output voltage. The
East-West correction of the LM1296 has height tracking and
vertical position tracking capabilities. As the height or posi-
tion of the raster is adjusted the geometry correction is main-
tained by the chip automatically.
The LM1296 is packaged in a 16-pin plastic DIP package.
Features
n Vertical scanning frequency 50 Hz–165 Hz
Connection Diagram
DS012894
See NS Package Number N16A
Order Number LM1296N
FIGURE 1.
n Accepts either polarity of V sync
n DC-controlled correction terms
n Raster vertical position control
n Vertical S-correction (linearity) control
n East-West pincushion control
n East-West trapezoid control
n East-West corner control
n Provides both polarities of correction output
n East-West correction tracks raster vertical position and
n Compatible with LM1290 and LM1292 horizontal PLL
Applications
n Vertical deflection of monitors
height
DS012894-1
February 1998
www.national.com

Related parts for LM1296N

LM1296N Summary of contents

Page 1

... East-West trapezoid control n East-West corner control n Provides both polarities of correction output n East-West correction tracks raster vertical position and height n Compatible with LM1290 and LM1292 horizontal PLL Applications n Vertical deflection of monitors DS012894-1 FIGURE 1. Order Number LM1296N See NS Package Number N16A February 1998 www.national.com ...

Page 2

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage ( Input Voltage ( Pins 10, 16 Power Dissipation ( Above 25˚C, Derate Based on and T (Note Thermal Resistance ( ) JA Junction Temperature (T ) JMAX Electrical Characteristics = 12V ...

Page 3

Electrical Characteristics = 12V; V See Test Circuit ( Figure Symbol Parameter V Corner Correction CNR Output Waveform Amplitude = (Pin 11, R L11 V E-W OUT DC11 Output Offset Voltage = 5 ...

Page 4

Typical Performance Characteristics E-W Out (Pin 11) E-W Out (Pin 11) E-W Out (Pin 11) www.national.com (Continued) E-W Out (Pin 11) DS012894-3 E-W Out (Pin 11) DS012894-5 E-W Out (Pin 11) DS012894-7 4 DS012894-4 DS012894-6 DS012894-8 ...

Page 5

Block Diagram Functional Description The LM1296 outputs a sawtooth and a variable DC voltage for the vertical deflection amplifier. It also provides the hori- zontal deflection output circuit with a waveform for Trap- ezoid, Pincushion and Corner correction. Referring to ...

Page 6

Functional Description Pin 1 (POSITION) not only controls the pin 13 output, but also the center position of the correction waveform at pin 11 (E-W OUT result, the geometry correction tracks the vertical position of the CRT raster. ...

Page 7

Pin Descriptions (Continued) Pin 11. E-W OUT: The output waveform at this pin consists of the sum of the linear sawtooth, 2nd order parabolic and 4th order parabolic waveform components. The center posi- tion of the output waveform tracks the ...

Page 8

Typical Application www.national.com 8 ...

Page 9

9 ...

Page 10

... Italiano National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. Order Number LM1296N NS Package Number N16A 2. A critical component in any component of a life support ...

Related keywords