SAA5191 Просмотр технического описания (PDF) - Philips Electronics
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SAA5191 Datasheet PDF : 9 Pages
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Philips Semiconductors
Teletext video processor
Preliminary specification
SAA5191
FEATURES
• Adaptive data slicer
• Crystal-controlled data clock regeneration with a bit rate
of 6.9375 MHz
• Adaptive sync separator, horizontal phase detector and
13.5 MHz VCO to provide display phase locked loop
(PLL)
• TV synchronization at teletext mode
GENERAL DESCRIPTION
The SAA5191 is a bipolar integrated circuit that extracts
teletext data from the video signal (CVBS), regenerates
the teletext clock (TTC) and synchronizes the text display
to the television signals (VCS). This device operates in
conjunction with the Digital Video Teletext (back-end)
Decoder (DVTB - SAA9042A) or any other compatible
device.
QUICK REFERENCE DATA
SYMBOL
VP
IP
Vi CVBS
Vo
VF13
VSYNC
VCS
Tamb
PARAMETER
MIN.
supply voltage (pin 16)
−
supply current
−
CVBS input signal on pin 27 (peak-to-peak value)
at pin 2 LOW
−
at pin 2 open-circuit
−
outputs signals TTC and TTD
2.5
(peak-to-peak value, pins 14, 15)
13.5 MHz clock output signal
1
(peak-to-peak value pin 17)
video sync output signal (peak-to-peak value, pin 1) −
SYNC output signal TCS
200
video composite sync level on output pin 25
LOW
−
HIGH
2.4
operating ambient temperature
0
TYP.
12
70
MAX.
−
−
UNIT
V
mA
1
−
V
2.5
−
V
3.5
4.5
V
2
3
V
−
1
V
450
650
mV
−
0.4
V
−
5.5
V
−
+70
°C
ORDERING AND PACKAGE INFORMATION
EXTENDED TYPE
NUMBER
SAA5191
PINS
28
DIL
Note
1. SOT117-1;1996 November 14
PACKAGE
PIN POSITION
MATERIAL
plastic
CODE
SOT117(1)
March 1991
2
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