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STMicroelectronics Electronic Components Datasheet

STV7778S Datasheet

DEFLECTION PROCESSOR FOR MULTISYNC MONITOR

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STV7778S pdf
STV7778S
DEFLECTION PROCESSOR FOR MULTISYNC MONITOR
HORIZONTAL
. DUAL PLL CONCEPT
. SELF-ADAPTIVE (30 TO 70kHz)
. X-RAY PROTECTION INPUT
. DC ADJUSTABLE DUTY-CYCLE
. INTERNAL 1st PLL LOCK/UNLOCK IDENTIFI-
CATION
. WIDE RANGE DC CONTROLLED H-POSITION
. ON/OFF SWITCH (FOR PWR MANAGEMENT)
. TWO H-DRIVE POLARITIES
VERTICAL
. VERTICAL RAMP GENERATOR
. 45 TO 120Hz AGC LOOP
. DC CONTROLLED V-AMP, V-POS, S-AMP
AND S-CENTERING
. ON/OFF SWITCH
B+ REGULATOR
. INTERNAL PWM GENERATOR FOR B+
CURRENT MODE STEP-UP CONVERTER
. DC ADJUSTABLE B+ VOLTAGE
. OUTPUT PULSES SYNCHRONISED ON
HORIZONTAL FREQUENCY
. INTERNAL MAX CURRENT LIMITATION
.EWPCC
VERTICAL PARABOLA GENERATOR WITH DC
CONTROLLED KEYSTONE AND AMPLITUDE
.GENERAL
COMPARED WITH THE STV7778, THE
... STV7778S HAS AN INTERNAL METAL SHIELD
PROTECTION AGAINST OVERVOLTAGE.
POS/NEG H AND V SYNC POL
SEPARATED H AND V TTL INPUT
SAFETY BLANKING OUTPUT
The goal of this IC is to control all the functions
related to the horizontal and vertical deflection in a
multimodes or multisync monitor.
As can be seen in the block diagram, the
STV7778S includes the following 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.
An internal metal shield give to the STV7778S more
immunity against electromagnetic and electrostatic
fields, and therefore, additional safety for critical
applications (for example, in case of CRTs with
small coated area).
SHRINK42
(Plastic Package)
ORDER CODE : STV7778S
DESCRIPTION
The STV7778S is a monolithic integrated circuit
assembled in a 42 pins shrunk dual in line plastic
package.
September 1998
1/11


STMicroelectronics Electronic Components Datasheet

STV7778S Datasheet

DEFLECTION PROCESSOR FOR MULTISYNC MONITOR

No Preview Available !

STV7778S pdf
STV7778S
PIN CONNECTIONS
PLL2C
H-DUTY
HFLY
HGND
HREF
NC
NC
NC
NC
C0
R0
PLL1F
HLOCK-CAP
FH-MIN
H-POS
XRAY-IN
HSYNC
VCC
GND
H-OUTEM
H-OUTCOL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
42 ISENSE
41 COMP
40 REGIN
39 B+-ADJ
38 KEYST
37 E/W-AMP
36 E/WOUT
35 PLL1INHIB
34 VSYNC
33 V-POS
32 VDCOUT
31 V-AMP
30 VOUT
29 VS-CENT
28 VS-AMP
27 VCAP
26 VREF
25 VAGCCAP
24 VDND
23 SBLKOUT
22 B+OUT
2/11


Part Number STV7778S
Description DEFLECTION PROCESSOR FOR MULTISYNC MONITOR
Maker ST Microelectronics
Total Page 11 Pages
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