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TDA7407 数据表(PDF) 10 Page - STMicroelectronics

部件名 TDA7407
功能描述  ADVANCED CAR SIGNAL PROCESSOR
PDF  30 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7407 数据表(HTML) 10 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VADJMP
Noise Rectifier adjustment
through Multipath
8)
Signal PEAK in
Testmode
MPNB = 00
8)
(c)
0.3
(c)
V/ms
MPNB = 01
8)
(c)
0.5
(c)
V/ms
MPNB = 10
8)
(c)
0.7
(c)
V/ms
MPNB = 11
8)
(c)
0.9
(c)
V/ms
0) All Thresholds are measured using a pulse with TR =2
µs, THIGH = 2µs and TF = 10µs. The repetition rate must not increase the PEAK voltage.
1) NBT represents the Noiseblanker Byte bits D2, D0 for the noise blanker trigger threshold
2) NAT represents the Noiseblanker Byte bit pair D4, D3 for the noise controlled triggeradjustment
3) OVD represents the Noiseblanker Byte bit pair D7, D6 for the over deviation detector
4) FSC represents the Fieldstrength Byte bit pair D1, D0 for the fieldstrength control
5) BLT represents the Speaker RR Byte bit pair D7, D6 for the blanktime adjustment
6) NRD represents the Configuration-Byte bit pair D1, D0 for the noise rectifier discharge-adjustment
7) PCH represents the Stereodecoder-Byte bit D5 for the noise rectifier charge-current adjustment
8) MPNB represents the HighCut-Byte bit D7 and the Fieldstrength-Byte D7 for the noise rectifier multipath adjustment
65mV
30mV
8 STEPS
NOISE CONTROLLED
TRIG. THRESHOLD
MIN. TRIG. THRESHOLD
260mV(00)
220mV(01)
180mV(10)
140mV(11)
0.9V
VTH
1.5V
VPEAK(V)
D97AU648
Figure 1. Trigger Threshold vs.VPEAK
VPEAK
(VOP)
D97AU649
20
DEVIATION(KHz)
0.9
1.2
2.0
2.8
DETECTOR OFF (11)
32.5
45
75
10
01
00
Figure 2. Deviation Controlled Trigger Adjust-
ment
VOP
VIN
DC
TR
THIGH
TF
Time
D97AU636
TDA7407
10/30



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