參數(shù)資料
型號： TDA7460NDTR
廠商： STMICROELECTRONICS
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PDSO20
封裝： ROHS COMPLIANT, SOP-20
文件頁數(shù)： 17/49頁
文件大?。?/td> 473K
代理商： TDA7460NDTR
Stereo decoder part
TDA7460ND
5.3
Noise blanker part
●
Internal 2nd order 140 kHz high pass filter
●
Programmable trigger threshold
●
Additional circuits for trigger adjustment (deviation, field-strenght)
●
Very low offset current during hold time
●
Four selectable pulse suppression times
Table 9.
Noise blanker electrical characteristics
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
VTR
Trigger threshold (1), (2)
meas. with VPEAK =
0.9 V
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)
meas. with VPEAK =
1.5 V
NCT = 00
260
mVOP
NCT = 01
220
mVOP
NCT = 10
180
mVOP
NCT = 11
140
mVOP
VRECT
Rectifier voltage
VMPX = 0 mV
0.5
0.9
1.3
V
VMPX = 50 mV; f = 150 kHz
1.5
1.7
2.1
V
VMPX = 100 mV; f = 150 kHz
2.2
2.5
2.9
V
VRECT DEV
Deviation dependent rectifier
voltage (4)
means. with VMPX =
800 mV
(75 KHz dev.)
OVD = 11
0.5
0.9(off)
1.3
VOP
OVD = 10
0.9
1.2
1.5
VOP
OVD = 01
1.7
2.0
2.3
VOP
OVD = 00
2.5
2.8
3.1
VOP
VRECT FS
Fieldstrength controlled
rectifier voltage (5)
means. with VMPX =
0mV
VLEVEL << VSBL(fully
mono)
FSC = 11
0.5
0.9(off)
1.3
V
FSC = 10
1.0
1.3
1.6
V
FSC = 01
1.5
1.8
2.1
V
FSC = 00
2.0
2.3
2.6
V
1.
All thresholds are measured using a pulse with TR = 2 ms, THIGH = 2 ms and TF = 10 ms.
2.
All thresholds are measured using a pulse with TR = 2 ms, THIGH = 2 ms and TF = 10 ms.
3.
NAT represents the Noise blanker-Byte bit pair D4,D3 for the noise controlled trigger adjustment.
4.
OVD represents the Noise blanker-Byte bit pair D7,D6 for the over deviation detector.
5.
FSC represents the Fieldstrength-Byte bit pair D1,D0 for the fieldstrength control.
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