SEMICONDUCTORS
DEVICE DESCRIPTION
The ZXFV4583 provides the ability to separate out
video synchronization signals for a wide variety of TV
andCRTdisplaysystems,standardandnon-standard.
Flexibility arises from the use of just three external
resistors to adapt to each application. One resistor
controls a fully integrated internal color carrier filter
with variable bandwidth. This filter avoids disturbance
from the color carrier, permitting accurate threshold
slicing for timing extraction.
A second resistor controls the voltage threshold for
loss of signal detection after a time-out interval. The
third resistor controls the timing functions.
DC restoration for displays is facilitated by the Back
Porch synch output, which can be used to drive an
external circuit toclamp the blanking voltageto a fixed
level.
FEATURES AND BENEFITS
PAL, NTSC, SECAM
Variable filter for optimal accuracy
Sync outputs: composite, horizontal, vertical, back
porch, odd/even
No-signal detector
On chip sample / hold capacitors
+5V single supply
Default vertical output where there are no
serration pulses
Pin and layout compatible with part EL4583 in
SO16N surface mount package
APPLICATIONS
Digital image capture
Video input systems requiring separation of
picture timing
Video distribution
CCTV surveillance
Digital multimedia
Timing for black level clamp
ZXFV4583
ISSUE 3 - NOVEMBER 2003
1
SYNC SEPARATOR WITH VARIABLE FILTER
ORDERING INFORMATION
Part Number Container Increment
ZXFV4583N16TA
Reel 7
500
ZXFV4583N16TC
Reel 13
2500
CONNECTION DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Supply voltage V
CC
-0.5V to +7V
Inputs to ground* -0.5V to V
CC
+0.5V
Operating temperature range -40C to 85C
Storage -65C to +150C
Operating ambient junction temperature T
JMAX
150C**
**The thermal resistance from thesemiconductor dieto ambientis typically120C/W whenthe SO16package is
mounted on a PCB in free air. The power dissipation of the device when loaded must be designed to keep the
device junction temperature below T
JMAX.
*During power-up and power-down, these voltage ratings require that signals be applied only when the power
supply is connected.
ZXFV4583
SEMICONDUCTORS
ISSUE 3 - NOVEMBER 2003
2
PARAMETER CONDITIONS TEST MIN TYP MAX UNIT
DC Characteristics
Supply current P 2 4.5 6.5 mA
Clamp voltage at FILTIN Pin 4 unloaded P 1.2 1.35 1.5 V
Discharge current at FILTIN Pin 4, Vin = 2V pk-pk C 1 A
Discharge current at FILTIN Pin 4, no signal C 3 6 12 A
Clamp charge current at FILTIN Pin 4, Vin = 1V pk-pk P 2 3 4 mA
Clamp voltage at FVIDIN Pin 8 unloaded P 1.2 1.35 1.5 V
Discharge current at FVIDIN Pin 8, Vin = 2V pk-pk C 1 ␮〈
Discharge current at FVIDIN Pin 8, no signal C 3 6 12 ␮〈
Clamp charge current at FVIDIN Pin 8, Vin = 1V pk-pk P 2 3 4 mA
R
SET
voltage, pin 12 P 1.5 1.75 2 V
R
FILT
voltage, pin 1 P 0.35 0.5 0.65 V
RNOSIG current, pin 2 P 1.5 2.5 3.5 A
Logic output low voltage, V
OL
I
OL
= 1.6mA P 0.35 0.8 V
ELECTRICAL CHARACTERISTICS
V
CC
= 5V, R
SET
= 681k,R
FILT
= 22k,R
NOSIG
= 82k,T
amb
=25C unless otherwise stated.
Test level: P = 100% production test
C = Characterized only
ZXFV4583
SEMICONDUCTORS
ISSUE 3 - NOVEMBER 2003
3
PARAMETER CONDITIONS TEST MIN TYP MAX UNIT
AC Characteristics
FILTIN function input voltage range PAL/NTSC P 0.5 2 V pk-pk
Filter voltage gain FILTIN to FILOUT P 4.9 5.7 6.5 dB
Filter attenuation 4.4MHz for PAL,
3.6MHz for NTSC
P
P
15
10
19
14
dB
dB
Slice level Vin = 1V pk-pk P 40 50 60 %
CSYNC prop. Delay, t
CS
Relative to pin 4 input P 250 400 ns
VSYNC delay C 250 ns
VSYNC pulse width, t
VSYNC
(PAL) C 165 s
VSYNC pulse width, t
VSYNC
(NTSC) C 195 s
VSYNC default delay, t
VSD
P303645 s
HSYNC delay P 250 ns
HSYNC pulse width, t
HSYNC
P 3.8 5 6.2 s
BKPCH delay, t
BD
Relative to pin 4 input P 250 400 ns
BKPCH pulse width, t
B
P 2.7 3.7 4.7 s
ELECTRICAL CHARACTERISTICS (Cont.)
V
CC
= 5V, R
SET
= 681k,R
FILT
= 22k,R
NOSIG
= 82k,T
amb
= 25C unless otherwise stated.
Note: In order to avoid coupling between high speed logic output signals and analog inputs, the test circuit
layout uses connections from the logic output pins routed away from the analog pins. In the application,
similar care in the layout is required, keeping resistors R
FILT
, R
NOSIG
and R
SET
close to their respective
pins, in particular routing signal CSYNC away from pins 1, 2 and 12.

ZXFV4583N16TC

Mfr. #:
Manufacturer:
Description:
IC SEPARATOR SYNC W/FLTR 16-SOIC
Lifecycle:
New from this manufacturer.
Delivery:
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