TDA8190 ST Microelectronics, TDA8190 Datasheet - Page 5

• Manufacturer Part Number: TDA8190
• Description: TV SOUND CHANNEL WITH DC CONTROLS
• Manufacturer: ST Microelectronics

TEST CONDITIONS (unless otherwise specified)
V
Figure 1 : Relative Audio Output Voltage and
Figure 3 : DC Tone Control Cut-off the High
-10
-20
Figure 5 :
-30
-10
-12
-14
-16
-18
-1
-2
-3
-4
-5
-0
-4
-8
S
-2
-6
2
1
0
0
10
-40
= 24V, Q
10
V (dB)
V (dB)
2
AMR (dB)
o
m = 0.3
o
S1 : off
P2 = 0
V
with f
0dB = 4V
10
-30
= set for V
P1 = 12k
P1 = 5k
P1 = 2k
P1 = 100
Output Noise versus Input Signal
Audio Frequencies for some Values
of Resistance adjusted by P1
Change
O
10
A
AMR versus Timing Frequency
= 60, f
-20
= 10Hz
2
R
10
L
3
O
-10
=
O
= 4.5MHz, V
10
= 0dB
3
V = 1mV
0
i
S+N
V o
N
10
10
10
4
IN
4
V ( V)
V = 10mV
= 1mV, f
i
0dB = 4V
i
N (dB)
20
f
S+N
fo
A
(Hz)
(kHz)
10
30
m
5
10
20
30
40
50
60
80
90
10
70
= 400Hz, f = 25kHz, P
0
5
Figure 2 : Output Voltage Alternation versus DC
20
40
60
80
Figure 4 : Amplitude Modulation Rejection
70
60
50
40
30
20
10
Figure 6 : Recovered Audio Voltage versus Un-
260
220
180
140
100
0
60
20
0
10
0
0
10
k (dB)
AMR (dB)
V (mV)
m = 0.3
P2 = 12k
9
0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4
f = 7.5kHz
2
V
P2
20
C
Volume Control Resistance (a) or ver-
sus DC Volume Control Voltage (b)
versus Input Signal
loaded Q-factor of the Detector Coil
4
10
2
6
1
30
= 12k , R
f : Set for V = 0dB
8
with P2 = 0 ( V
10
10 12 14 16 18 20
40
3
L
= , S1 = on
50
10
4
TDA8190
P2 (k )
V (V)
V ( V)
c
60
C
i
= 0V)
Qo
10
5/11
70
5