TDA8190 Datasheet, PDF (4/11 Pages) STMicroelectronics – TV SOUND CHANNEL WITH DC CONTROLS

TDA8190
ELECTRICAL CHARACTERISTICS (continued)
(refer to the test circuit, VS = 24V, S1 : on, ∆f = ± 25kHz, VI = 1mV, P1 = 12kΩ, fo = 4.5MHz,
fm = 400Hz, Tamb = 25°C, unless otherwise specified).
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
OVERALL CIRCUIT
S+N
N
d
Signal to Noise Ratio (*)
Distortion (*)
M
Muting (*)
∆f
Deviation Sensitivity
* Test Bandwidth = 20kHz.
V_i ≥ 1mV, V_o = 4V_rms, ∆f = 0
Po = 50mW, ∆f = ± 7.5Hz
V_s = 24V
R_L = 16Ω
V_s = 12V
R_L = 8Ω
Vo = 4Vrms@ no V1 ; V1 = 0
P₂ = 0, V_o = 4V_rms
70
dB
0.5
0.5
100
3
%
%
dB
6 kHz
TEST CIRCUIT
VS
470µF
0.1µF
0.1µF
18
IF
input
2
Vi
51Ω
0.1µF
3
4
7
8
L1
120pF
R1
270kΩ
4.7µF
1
5
6
15
16
17
TDA 8190
15kΩ
9
C1
68nF
19
10
11
12
13
14
20 ^2.2µF
270Ω
2.2kΩ
2.2kΩ
12kΩ
2.2µF
0.1µF
8.2pF
1µF 1µF 10nF
OFF
S1
ON
P1
22kΩ
VC
P2
22kΩ
VCR OUT VCR IN
fo
(V10)
Tone Volume
470µF
Vo
220nF
RL
2.2Ω
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