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PDF KB2147 Data sheet ( Hoja de datos )
| Número de pieza | KB2147 | |
| Descripción | Deflection Processor for Multisync Monitors | |
| Fabricantes | Samsung | |
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DEFLECTION PROCESSOR FOR MULTISYNC MONITORS
KB2147
DEFLECTION PROCESSOR
The KB2147 is a monolithic integrated circuit assembled in a
42 pins shrunk dual in line plastic package.
The goal of this IC is to control all the functions related to the
horizontal and vertical deflection in multimodes or multisync
monitors.
42-SDIP-600
FUNCTIONS
• Positive or Negative sync polarities
• Auto-sync horizontal processing
• H-PLL lock/unlock identification
• Auto-sync Vertical processing
• East/West signal processing block
• B+ controller
• Safety blanking output
FEATURES
ORDERING INFORMATION
Device
KB2147
Package
42-SDIP
Operation Temperature
0 °C ~ 70 °C
(HORIZONTAL)
• Dual Pll concept
• Self-adaptative (30 to 70kHz)
• X-ray protection input
• DC adjustable duty-cycle
• Internal 1st PLL lock/unlock information
• Wide range DC controlled H-position
• ON/OFF switch (for PWR management)
• Two H-drive polarities
(VERTICAL)
• Vertical ramp generator
• 50 to 120Hz AGC Loop
• DC controlled V-amp, V-pos, S-amp & S-centring
• ON/OFF Switch
(B+ REGULATOR)
• Internal PWM generator for B+ current mode
step-up conveter
• DC adjustable B+ voltage
• Output pulse synchronised on horizontal frequency
• Internal MAX current limitation
(GENERAL)
• Accept Positive or Negative Horizontal &
Vertical sync polarities
• Separate H & V TTL input
• Safety blanking output
(EWPCC)
• Vertical parabola generator with DC
• controlled keystone & amplitude
1
1 page  
DEFLECTION PROCESSOR FOR MULTISYNC MONITORS
KB2147
Pin No
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
Pin Name
VCAP
VS-AMP
VS-CENT
V-OUT
V-AMP
VDCOUT
V-POS
V-SYNC
PLL1INHIB
E/WOUT
E/W-AMP
KEYST
B+ADJ
REGIN
COMP
ISENSE
Table 1. Pin Description (Continued)
Description
Vertical Sawtooth Generator Capacitor
DC Control of Vertical S-Shape Amplitude
DC Control of Vertical S-Centering
Vertical Ramp Output (with frequency independant amplitude and S-Correction)
DC Control of Vertical Amplitude Adjustment
Vertical Position Reference Voltage Output Temperature matched with V-AMP
output
DC Control of Vertical Position Adjustment
Vertical TTL Sync Input
TTL Input for PLL1 Output Current Inhibition (To be used in case of comp sync input
signal)
East/West Pincushion Correction Parabola Output
DC Control East/West Pincushion Correction Amplitude
DC Control of Keystone Correction
DC Control of B+ Adjustment
Regulation Input of B+ Control Loop
B+ Error Amplifier Output for Frequency Compensation and Gain Setting
Sensing of External B+ Switching Transistor Emitter Current
5
5 Page 
DEFLECTION PROCESSOR FOR MULTISYNC MONITORS
KB2147
B+ SECTION
OPERATING CONDITIONS
Parameter
Maximum Error Amplifier Output
Current
Minimum Feedback Resistor
Symbol
Conditions
EAOI Source by pin 14
Sunk by pin 41
FeedRes Resistor between pins 40 and 41
Min Typ Max Unit
0.5 mA
2 mA
5 kΩ
ELECTRICAL CHARACTERISTICS
(VCC = 12V, Tamb = 25 °C)
Table 4. B+ Section Electrical Characteristics
Parameter
Error Amplifier Open loop gain
Unity gain bandwidth
Regulation input bias current
Maximum guaranted error amplifier
output current
Current Sense Input Voltage Gain
Max Current Sense Input Threshold
Votlage
Current Sense Input Bias Current
Maximum External Power Transistor
on Time
B+ Output Low Level Saturation
voltage
Internal Reference voltage
Internal Reference Voltage Adjustment
Symbol
OLG
UGBW
IRI
EAOI
CSG
MCEth
Conditions
At low frequency
see (1)
see (1)
Current sourced by
pin 40 (PNP base)
Current sourced by pin 41
Current sink by pin 41
Pin 42
Pin 42
Min Typ Max
85
Unit
dB
6
0.2
0.5
2
3
1.2
MHz
µA
mA
mA
V
ISI
Tonmax
B+OSV
Current sunk by pin 42
(NPN base)
% of H-period
@ f0 = 27kHz
V22 with I22 = 10mA
IVref
VRERADJ
On error amp (+) input for V39 = 4V
2V < V39 < 6V
1
75
0.25
4.9
±14
µA
%
V
V
%
EAST/WEST PARABOLA GENERATOR
ELECTRICAL CHARACTERISTICS
(VCC = 12V, Tamb = 25 °C)
Table 5. East/West Parabola Generator Electrical Characteristics
Parameter
Parabola symetry adjustment capability
(for Keystone adjustment; with pin 38)
Symbol
Vsym
Conditions
See figure 2; Internal voltage
V38 = 2V
V38 = 4V
V38 = 6V
Min Typ Max Unit
V
3.2
3.5
3.8
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet KB2147.PDF ] | |
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