U4479B TEMIC [TEMIC Semiconductors], U4479B Datasheet - Page 7

• Manufacturer Part Number: U4479B
• Description: DVB-Cable IF Converter and Full Multi-Standard Video-/Sound IF Processing
• Manufacturer: TEMIC [TEMIC Semiconductors]

TELEFUNKEN Semiconductors
Rev. A2, 14-Jan-98
Electrical Characteristics (continued)
V
Table of Switch Settings
Notes
1. This parameter is given as an application information and it is not tested during production.
2. The oscillator drift is related to the picture carrier frequency, at external temperature-compensated LC circuit
3.
4. Picture carrier PC = 38.9 MHz; sound carrier SC
5. Sound carrier SC = 32.4 MHz, modulated with f
6. Without control voltage ‘High Level’ mode is automatically selected
7. For L’: AFC is adjustable with external potentiometer
Modulation switch (pin 16):
Control voltage for
HIGH: neg. modulation
LOW: pos. modulation
Switching current
Frequency switch (Pin 17)
Control voltage for
HIGH: f
LOW: f
(depends on Pin 16)
Switching current
S
= 5 V, T
a
a
input signal conditions: picture carrier
PC/SC
Modulation switch (Pin 16)
(1.07) = 20 log (4.43 MHz component/ 1.07 MHz component);
(1.07) value related to black-white signal
Frequency switch (Pin 17)
IF input switch (Pin 15)
VCO
VCO
Parameters
1
VCO frequency
Active IF input
amb
= 13 dB; PC/SC
= 33.4/43 MHz
= 38.9 MHz
Standard
= +25 C
2
= 20 dB; PC unmodulated (equivalent to sync peak level)
See note 6
Pin 16 to ground
see also note 6
Pin 17 to ground
color carrier
sound carrier
Test Conditions / Pins
Preliminary Information
43 MHz
‘high’
‘low’
DVB
IF 1 (Pins 5, 6)
Pin 15 ‘high’
mod
1
–24 dB
–6 dB
= 33.4 MHz, SC
0 dB
= 1 kHz, m = 54%; v
Symbol
38.9 MHz
V
V
I
I
mod
freq
‘high’
‘high’
mod
freq
BG
2
= 33.16 MHz;
Min.
3.35
2.5
in
= 10 mV
38.9 MHz
‘high’
‘low’
Typ.
L
30
IF 2 (Pins 9, 10)
Pin 15 ‘low’
U4479B
Max.
700
3.5
1.5
3.5
3.2
(see note 7)
33.4 MHz
‘low’
‘low’
L’
Unit
m
m
V
V
V
V
7 (11)
A
A