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
CVBS
sync
data
input
47 µF
47 nF
+12 V
82 Ω
47 nF
3.3 kΩ
47 nF
15 µF
22 nF VP = 12 V
1 nF
TCS
PL
VCS
470
Ω
2.2 µF
68
68
220 kΩ
nF
pF
15
µH
6.8
pF
(1) (2)
10 nF
28 27 26 25 24 23 22 21 20 19 18 17 16 15
SAA5191
27
1.2
pF
kΩ
1
2
3
4
5
6
7
8
9
10 11 12 13 14
1.2 kΩ
video
input
level
select
15
1
470 22
pF nF pF nF
270 100
13.875
pF pF XTAL MHz
(3)
15
pF
F13
TTD
(4)
15
µH
TTC
CBB
additional drawing
for crystal application
XTAL (2)
47
nF
21
13.5
MHz
47
22
nF
pF
20 19 18
SAA5191
MEH156
(1) inductance 15 µH at 1 kHz, Co = 2.2 pF. Adjust free-running frequency to 13.5 ± 0.1 MHz or apply 13.5 MHz quartz crystal
as shown in additional drawing
(2) Crystal: f = 13.5 MHz (e.g. Philips catalogue number 4322 143 04101); adjustment tolerance ±40 × 10−6;
load capacitance CL = 22 pF; resonance resistance Rr = 22 pF; typical motional capacitance C1 = 23 fF;
static parallel capacitance C0 = 5.5 pF; frequency tolerance ±30 × 10−6 in temperature range T = −20 to +70°.
Adjust free-running frequency to 13.5 ± 0.5 MHz.
(3) Crystal: f = 13.875 MHz; adjustment tolerance ±40 × 10−6; load capacitance CL = 15 pF;
typical resonance resistance Rr = 15 Ω (maximum 60 Ω); typical motional capacitance C1 = 19 fF;
static parallel capacitance Co = 5 pF; frequency tolerance ±30 × 10−6 in temperature range T = −20 to +70°.
(4) Coil: Fixed inductance 15 µH ±20%, quality factor Q > 20.
Fig.3 Test circuit and application circuit using LC-circuit or a crystal for VCO (clock F13).
March 1991
7
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