TDA7420 Datasheet, PDF (20/29 Pages) STMicroelectronics – MULTIFUNCTIONAUDIO PROCESSOR

TDA7420
NOISE BLANKER 2
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
FUNCTION
Field Strenght Controlled Rectifier Voltage (control by Vsb-Vr) Vpeak at Vsb-Vr = -500mV (fully Mono)
0
0 Control Off
0
1 Vpeak = 1.3V
1
0 Vpeak = 1.9V
1
1 Vpeak = 2.4V
Noise Blanker Gain
1
Low
0
High
AMS
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
FUNCTION
Att. Sensitivity Tuning
0
0 0dB
0
1 -1dB
1
0 -2dB
1
1 -3dB
Gain Sensitivity Tuning
0
0
0
0dB
0
0
1
10dB
0
1
0
14dB
0
1
1
18dB
1
0
0
22dB
1
0
1
26dB
1
1
0
30dB
1
1
1
34dB
AC Sensitivity Tuning
0
0
22dB f = 1.1KHz SW1 = SW2 = SW3
0
1
34dB f = 1.1KHz
1
0
not allowed
1
1
21dB f = 160Hz
0
AMS ON
1
AMS OFF
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