TDA7407 STMicroelectronics, TDA7407 Datasheet - Page 18

• Manufacturer Part Number: TDA7407
• Description: IC PROCESSOR CAR SIGNAL 44TQFP
• Manufacturer: STMicroelectronics
• Type: Car Signal Processorr

Specifications of TDA7407

• Applications: Automotive Audio
• Mounting Type: Surface Mount
• Package / Case: 44-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-3979

Noise blanker part
18/46
Table 7.
1. All Thresholds are measured using a pulse with TR =2ms, THIGH = 2ms and TF = 10ms. The repetition
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
10. By design / characterization functionally guaranteed through dedicated test mode structure
Figure 3.
V
Symbol
SR
V
RECTADJ
ADJMP
rate must not increase the PEAK voltage
adjustment
T
PEAK
S
Suppression pulse
duration
Noise rectifier
discharge adjustment
(7)
Noise rectifier charge
Noise rectifier
adjustment through
multipath
Noise blanker electrical characteristics (continued)
Vn timing diagram
D97AU636
Parameter
V IN
DC
(6)
(9)
V OP
T R
Signal HOLDN in
testmode
Signal PEAK in
testmode
Signal PEAK in
testmode
Signal PEAK in
testmode
Test condition
T HIGH
MPNB = 00
MPNB = 01
MPNB = 10
MPNB = 11
NRD = 00
NRD = 01
NRD = 10
NRD = 11
PCH = 0
PCH = 1
BLT = 00
BLT = 10
BLT = 01
BLT = 00
T F
(8)
(8)
(5)
(5)
(5)
(5)
(9)
(9)
(9)
(9)
Min.
TBD
TBD
TBD
TBD
(10)
(10)
(10)
(10)
(10)
(10)
(10)
(10)
(10)
(10)
Time
Typ.
25.5
0.3
0.8
1.3
2.0
0.3
0.5
0.7
0.9
38
32
22
10
20
Max.
TBD
TBD
TBD
TBD
(10)
(10)
(10)
(10)
(10)
(10)
(10)
(10)
(10)
(10)
TDA7407
mV/μs
mV/μs
V/ms
V/ms
V/ms
V/ms
V/ms
V/ms
V/ms
V/ms
Unit
μs
μs
μs
μs