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TDA7407 bảng dữ liệu(PDF) 18 Page - STMicroelectronics

tên linh kiện TDA7407
Giải thích chi tiết về linh kiện  Advanced car signal processor
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TDA7407 bảng dữ liệu(HTML) 18 Page - STMicroelectronics

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Noise blanker part
TDA7407
18/46
Figure 3.
Vn timing diagram
TS
Suppression pulse
duration (6)
Signal HOLDN in
testmode
BLT = 00
TBD
38
TBD
μs
BLT = 10
TBD
32
TBD
μs
BLT = 01
TBD
25.5
TBD
μs
BLT = 00
TBD
22
TBD
μs
VRECTADJ
Noise rectifier
discharge adjustment
(7)
Signal PEAK in
testmode
NRD = 00 (5)
(10)
0.3
(10)
V/ms
NRD = 01 (5)
(10)
0.8
(10)
V/ms
NRD = 10 (5)
(10)
1.3
(10)
V/ms
NRD = 11 (5)
(10)
2.0
(10)
V/ms
SRPEAK Noise rectifier charge
Signal PEAK in
testmode
PCH = 0 (8)
(10)
10
(10)
mV/
μs
PCH = 1 (8)
(10)
20
(10)
mV/
μs
VADJMP
Noise rectifier
adjustment through
multipath (9)
Signal PEAK in
testmode
MPNB = 00 (9)
(10)
0.3
(10)
V/ms
MPNB = 01 (9)
(10)
0.5
(10)
V/ms
MPNB = 10 (9)
(10)
0.7
(10)
V/ms
MPNB = 11 (9)
(10)
0.9
(10)
V/ms
1.
All Thresholds are measured using a pulse with TR =2ms, THIGH = 2ms and TF = 10ms. The repetition
rate must not increase the PEAK voltage
2.
NBT represents the Noiseblanker Byte bits D2, D0 for the noise blanker trigger threshold
3.
NAT represents the Noiseblanker Byte bit pair D4, D3 for the noise controlled triggeradjustment
4.
OVD represents the Noiseblanker Byte bit pair D7, D6 for the over deviation detector
5.
FSC represents the Fieldstrength Byte bit pair D1, D0 for the fieldstrength control
6.
BLT represents the Speaker RR Byte bit pair D7, D6 for the blanktime adjustment
7.
NRD represents the Configuration Byte bit pair D1, D0 for the noise rectifier discharge adjustment
8.
PCH represents the Stereo decoder Byte bit D5 for the noise rectifier charge current adjustment
9.
MPNB represents the HighCut Byte bit D7 and the Fieldstrength Byte D7 for the noise rectifier multipath
adjustment
10. By design / characterization functionally guaranteed through dedicated test mode structure
Table 7.
Noise blanker electrical characteristics (continued)
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
VOP
VIN
DC
TR
THIGH
TF
Time
D97AU636



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