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TDA7410ND Datasheet(PDF) 16 Page - STMicroelectronics

Part # TDA7410ND
Description  Signal processor for car radio applications
PDF  34 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7410ND Datasheet(HTML) 16 Page - STMicroelectronics

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Description of the audioprocessor part
TDA7410ND
16/34
5.9
Noise blanker part
●
Internal highpass filter
●
Programmable trigger threshold
●
Additional circuit for trigger adjustment (deviation, field-strength)
●
Very low offset current during hold time
●
Selectable pulse suppression times
Table 7.
Noise blanker electrical characteristics
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VTH
Trigger threshold(1),(2)
means. with
VPEAK=0.9V
NBT=111
30
mVOP
NBT=110
35
mVOP
NBT=101
40
mVOP
NBT=100
45
mVOP
NBT=011
50
mVOP
NBT=010
55
mVOP
NBT=001
60
mVOP
NBT=000
65
mVOP
VTRNOISE
Noise controlled trigger
threshold(3)
means. with
VPEAK=1.5V
NCT=00
260
mVOP
NCT=01
220
mVOP
NCT=10
180
mVOP
NCT=11
140
mVOP
VRECT
Rectifier voltage
VMPX = 0mV
0.9
V
VMPX = 50mV; f = 150kHz
1.7
V
VMPX = 100mV; f = 150kHz
2.5
V
VRECT DEV
deviation dependent
rectifier voltage(4)
means. with
VMPX=800mV
(75kHz dev.)
OVD=11
0.9(off)
VOP
OVD=10
1.2
VOP
OVD=01
2.0
VOP
OVD=00
2.8
VOP
VRECT FS
Fieldstrength Controlled
Rectifier Voltage(5)
means. with
VMPX=0mV
VLEVEL<<VSBL
(fully mono)
FSC=11
0.9(off)
V
FSC=10
1.3
V
FSC=01
1.8
V
FSC=00
2.3
V
1.
All thresholds are measured using a pulse with TR = 2 ms, THIGH = 2 ms and TF = 10ms
2.
NBT represents the Noiseblanker-Byte D2~D0 for the noise blanker trigger threshold
3.
NAT represents the Noiseblanker-Byte D4~D3 for the noise controlled trigger adjustment
4.
OVD represents the Noiseblanker-Byte D7~D6 for the over deviation detector
5.
FSC represents the Fieldstrength-Byte D1~D0 for the fieldstrength control



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