SAA5231 Datasheet, PDF (7/13 Pages) NXP Semiconductors – Teletext video processor

Philips Semiconductors
Teletext video processor
Product specification
SAA5231
PARAMETER
Teletext clock output
A.C. output voltage
(peak-to-peak value)
D.C. output voltage (centre)
Load capacitance
Rise and fall times
Delay of falling edge relative to
other edges of TTD
Teletext data output
A.C. output voltage
(peak-to-peak value)
D.C. output voltage (centre)
Load capacitance
Rise and fall times
APPLICATION INFORMATION
SYMBOL MIN. TYP. MAX. UNIT
V_14-13(p-p)
V_14-13
C_L
t_r; t_f
t_d
2,5 3,5
3,0 4,0
−
−
20
30
−20 0
4,5 V
5,0 V
40
pF
45
ns
+20 ns
V_15-13(p-p)
V_15-13
C_L
t_r; t_f
2,5 3,5 4,5 V
3,0 4,0 5,0 V
−
−
40
pF
20
30
45
ns
handbook, full pagewidth
47 µF
47 nF
VCC
47 nF
82 Ω
3.3
kΩ
47 nF
15 22
µF nF
composite
video
input
sync out
1.2
kΩ
2.2 µF
68
kΩ
68
220
nF
pF
50
µH
(1)
10
pF
10 nF
28 27 26 25 24 23 22 21 20 19 18 17 16 15
SAA5231
27
pF
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
pF pF
data
input
VCR
XTAL
13.875 MHz
15 pF
TCS
sandcastle input
VCS
F6
TTD
15
µH
TTC
MGH189
(1) Coil: 50 µH at 1 kHz, C_o = 4 pF. Adjust the free-running frequency to 6000 kHz ± 30 kHz.
Fig.3 Application circuit using L/C circuit in PLL.
November 1986
7