TDA7407TR View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
TDA7407TR Datasheet PDF : 46 Pages
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TDA7407
4
Noise blanker part
Noise blanker part
● internal 2nd order 140kHz high pass filter
● programmable trigger threshold
● trigger threshold dependent on high frequency noise with programmable gain
● additional circuits for deviation and fieldstrength dependent trigger adjustment
● very low offset current during hold time due to opamps wMOS inputs
● four selectable pulse suppression times
● programmable noise rectifier charge/discharge current
Table 7. Noise blanker electrical characteristics
Symbol
Parameter
Test condition
Min. Typ. Max. Unit
NBT = 111 (10)
30
(10) mVOP
NBT = 110 (10)
35
(10) mVOP
NBT = 101 (10)
40
(10) mVOP
VTR
Trigger threshold (1) (2)
meas. with VPEAK
= 0.9V
NBT = 100
NBT = 011
(10)
(10)
45
50
(10) mVOP
(10) mVOP
NBT = 010 (10)
55
(10) mVOP
NBT = 001 (10)
60
(10) mVOP
NBT = 000 (10)
65
(10) mVOP
NCT = 00
(10)
260
(10) mVOP
VTRNOISE
Noise controlled
trigger threshold (3)
meas. with VPEAK
= 1.5V
NCT = 01
NCT = 10
(10)
(10)
220
180
(10) mVOP
(10) mVOP
NCT = 11
(10)
140
(10) mVOP
VMPX = 0mV
NRD (7) = 00 0.5 0.9 1.3 V
VRECT Rectifier voltage
VMPX = 50mV; f = 150KHz
1.5 1.7 2.1 V
VMPX = 200mV; f = 150KHz
2.2 2.5 2.9 V
VRECT DEV
Deviation dependent
rectifier voltage (4)
means. with
VMPX = 800mV
(75KHz dev.)
OVD = 11
OVD = 10
OVD = 01
0.5 0.9(off) 1.3 VOP
0.9 1.2 1.5 VOP
1.7 2.0 2.3 VOP
OVD = 00 2.5 2.8 3.1 VOP
Fieldstrength
VRECT FS controlled rectifier
voltage (5)
means. with
VMPX = 0mV
VLEVEL << VSBL
(fully mono)
FSC = 11 0.5 0.9(off) 1.3 V
FSC = 10 0.9 1.4 1.5 V
FSC = 01 1.7 1.9 2.3 V
FSC = 00 2.1 2.4 3.1 V
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