Page 1
LZ95B25
LZ95B25
DESCRIPTION
The U95B25 is a CMOS subcarrier signal generator LSI which provides
color video camera, in
LSI (LZ95D52/M)
FEATURES
.
Switchable
systems
. Included phase comparator circuit
● Single + 5 V power supply
● Package : 18-pin MFP(MFPO1 8-P)
between
subcarrier
combination
NTSC,
PAL and
pulses for
SECAM
Subcarrier Generator
PIN CONNECTIONS
18-PIN
MFP
TVMI 1
TVM2
4FSI 3
4FS0 4 15 SCHD
TST
TST2 8 11 CPCH
GND 9 10 EOO
0
2
I 5 14 RPI
SC,
6 13 CFMI
SC2
7
B
LSl
for CCD
18
VCC
17 GNO
16 CPI
12 TST3
TOP VIEW
RI
~.K nlAGRAM
------ . . . . . . . . . . .
Vcc GND CPI SCHD RPI CFMI TST, CPCH EOO
I
TVM2 4FSI 4FS0
TVM
‘In the abwnce of confimtion by device sw!fication sheets SHARP takes no rewnslb!l(v fci any defects
data M, et, ?nnta?t
SHARP
,. order
in
nhta(n ihe latp?t
ws,on of
tie
device m.lhcation
TST! SCI
.*wb btie uslno
SC2 TST2 GNO
tiat xcur
in
equ)pment us(ng
anv SHARPs device”
any of WARPs devices, shorn In cablcgs,
I
299
Page 2
ABSOLUTE MAXIMUM RATINGS
PARMHER
Supply voltage
Input voltage
Output voltage Vo
Operating temperature
Storage temperature
SYMBOL
Vcc
VI
Topr
Tstg
RATING
–0.3 to
–
–
–20 to
–55 to +150
0.3
0.3
to
to
7.0
Vcc
Vcc
+70
+ 0.3
+ 0.3
LZ95B25
UNIT
v
v
v
‘c
“c
DC CHARACTERISTICS
PARMHER
Input Low voltage
Input High voltage
Input Low current
Input High current
Output High voltage
Output Low voltage
Leak output current
NOTES :
1. Applied to inputs (IC,
2. Applied to inputs (lCD,
3. Applied to input
4. Applied to inputs
5. Applied to input (lCD).
6. Applied to outputs (O,
7. Applied to output
8.
Applied to
tri-state
ICU, OSCI).
OSCI).
(ICU).
(ICU, OSCI).
OSCO).
(02M).
output
(EOO).
(VCC=+5 V*1O%,
SYMBOL CONDITIONS MIN. TYP.
vlL
vlH
I
[IL1 I
I IILZ I
,,
I IIH1 I
I
IIH2 I
vOH
1
vOH2
vOH3
vOL1 ioL
vOL2
v0L3
1
Ioz
I
Vl=r)
Vl=o v
VI=
VI=
IoH=–P
IoH=–
IoL=12
High-Z
v
Vcc
Vcc
mA
I
mA
IoH=–6 mA
= 4
mA
IOL
= 2
mA
mA
3.5
8,0 60
8.0 60
4.0 v
4.0 v
4,0 v
Ta=–10 to +7
MAX. UNIT NOTE
1.5
1.0 ,uA
1.0
0.4
0,4
0,4
1.0
v
v
PA
PA
,uA
v
v 7
v
,uA
UC)
1
2
2
4
5
6
7
8
6
8
~
300
Page 3
LZ95B25
4N
““.
.-
1
2
3
4
5
6
7
SYMBOL
_..
..— ——
TVM
I
TVM2
4FSI
4FS0
TSTI
SC1
SC2
1/0
I POLARITY I
Icu
Icu
Oscl
Osco
ICD
02M
02M
—
—
nn
Ulr
—
Iu
Iu
PIN NAME
TV mode 1
TV mode 2
Colck input At NTSC mode
Clock output
Test pin 1
Subcarrier
Subcarrier output 2
output 1
These input pins to select TV standards.
~
An input pin for the signal 4 times the color sub-
carrier frequency.
At PAL mode
At SECAM mode : 17.625 MHz
The output is the inverse 4FSI (pin 4).
A test pin, Set open or to L level in the Normal
mode,
An output pin fw color
the signals is 1/4 the 4FSI (pin 3). The signal is
reset by color frame pulse
An output pin for color
SCI (pin 4) is 180 degree, the phase of
of
80 degree in NTSC
of SC2 is
and 270 degree when LSW is H level. The SC
same as the phase of SC I in SECAM mode.
80 degree when LSW
FUNCTION
: 14.31818 MHz
: 17.734475 MHz
subcarrier.
subcarrier.
mode in PAL mode, the phase
The frequency of
CFMI (pin 13).
When the phase
(SSG-LSI)
SCZ
is
is L level
z
is
—
—
—
—
Test pin 2
Ground
Phase comparator
output
Polarity select input comparates rising edge of RPI. When CPCH is H
Test pin 3
–
Color frame input
–
TST2
8
GND
9
EOO
10
CPCH
11
12
TST3
CFMI
13
ICD
—
TO
ICD
ICD
ICD
A test pin. Set open or to L level in the Normal
mode.
A grounding pin.
Phase comparator output for input signals RPI (pin
CPI
14) and
is Low level. When
level. When phases are equal, the terminal impad-
ance is High.
edge of
The CPCH input pin switches the polarity of RPI
(pin
level, phase comparator comparates falling edge
of
A test pin. Set open or to L level in the Normal
mode.
An input pin for color frame signal; Connect to
CFMO
(pin 16). When
Pha=
CPI.
14).
When CPCH is L level,
RPI.
(SSG-LSI).
CPI
is advanced, output
CPI
is delayed, output is High
comparator comparates rising
pha~
comparator
301
Page 4
LZ95B25
1/0
ICD
o
[CD
—
–
POLARITY
—
–
–
—
.
output).
SYMBOL
:’.
14
15 SCHD
16
17 GND
18
Icu
ICD
o
02M : Output pin.
TO
OSCI : Input pin for oscillation.
OSCO : Output pin for oscillation.
RPI
CPI
Vcc
:
Input pin (CMOS level with built-in pull-up resistor).
: Input pin (CMOS level with built-in pull-up resistor).
:
Output pin,
: Output
pln (tn-state
PIN NAME
An input pin for the reference horizontal signal to
Horizontal comparison
input
Subcarrier HD
Horizontal comparison
input
Ground
Power supply Supply +5 V power.
the phase comparator. Connect to HD (SSG-LSI),
when comparator is used. The polarity of RPI se-
lects with CPCH (pin 11),
A horizontal synchronous pulse obtained by dividing
4FSI (pin 3).
At NTSC mode
At PAL mode
At SECAM mode : dividing into 1/1 128
An input pin for comparison horizontal signal to the
phase comparator. Connect to SCHD (pin 15) when
comparator is used,
A grounding pin.
FUNCTION
: dividing into 1/910
: dividing into 1/1 135 4FSI
ordinarily and dividing into
1/1 137 4FSI during one ho-
rizon tal period within the V
blanking.
4FSI,
4FSI.
302
Page 5
TIMING DIAGRAM
4FSI
SC?
SC2
PULSE TIMING < NTSC >
1
SC2 :
90”
advanced
LZ95B25
4FSI
LSW
sc~~
SC2
4FSI
Sci
SC2
PULSE TIMING < PAL
~
SC2
: 90” advanced
PULSE TIMING <
WI,
SC2
: same phaw
~
SECAM
I
>
90”
delayad
SC2 :
>
1
1
303
Loading...