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TDA5667-5 Datasheet, PDF (9/22 Pages) Siemens Semiconductor Group – Video Modulator for FM/AM-Audio
TDA 5667-5
AC/DC-Characteristics (cont’d)
TA = 25 oC; VS = 12 V
Parameter
Symbol
Limit Values
min. typ. max.
Modulation depth mD/N
60
70
80
Unit
%
Stability of mod.
∆mD
depth
∆mD
1
± 2.5 %
1
± 2.5 %
Test
Condition
staircase signal
at video input;
VVideo = 1 Vpp
∆VVideo = 1 Vpp
± 3 dB;
TA = 0...60 oC
Test
Circuit
6
6
6
∆mD
Differential gain
αdif
Differential phase Φdif
1
± 2.5 %
VS = 10...13.5 V 6
10
%
7
15
deg measured with 7
measurement
demodulator,
video test signals
and vector scope
Amplitude response of video signal; VVideo = 1 Vpp with additional modulation f = 15 kHz-5MHz
sine signal between black and white
αV
0
1.5
dB
8
Period of time required for peak white detector to reach steady state for full modulation depth with
1-white pulse per half frame when control is already in the steady state
t
6
50
µs
C at pin 11 = 10 µF; 1
I leakage ≤ 2 µA
Setting time for video signal change from 0 Vpp to 1.4 Vpp; video blanking signal content is
uniform white level
t
120 500 µs
1
Setting time for video blanking signal from 100% white level to 42% grey level with subsequent
rise in grey level to 71% of video blanking signal (due to decontrol process)
t
0.4 2
10
min
1
Audio
Audio oscillator frequency range; unloaded Q factor of resonance circuit Qu = 25;
fresonance = 5.5 MHz
fA/OSC
4
7
MHz
1
Semiconductor Group
9