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| 型號(hào)： | TDA7400 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
| 封裝： | 10 X 10 MM, TQFP-44 |
| 文件頁(yè)數(shù)： | 28/28頁(yè) |
| 文件大?。?/td> | 274K |
| 代理商： | TDA7400 |
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ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VTR
Trigger Threshold
0) 1)
meas. with VPEAK = 0.9V
NBT = 111
(c)
30
(c)
mVOP
NBT = 110
(c)
35
(c)
mVOP
NBT = 101
(c)
40
(c)
mVOP
NBT = 100
(c)
45
(c)
mVOP
NBT = 011
(c)
50
(c)
mVOP
NBT = 010
(c)
55
(c)
mVOP
NBT = 001
(c)
60
(c)
mVOP
NBT = 000
(c)
65
(c)
mVOP
VTRNOISE
Noise Controlled Trigger
Threshold
2)
meas. with VPEAK = 1.5V
NCT = 00
(c)
260
(c)
mVOP
NCT = 01
(c)
220
(c)
mVOP
NCT = 10
(c)
180
(c)
mVOP
NCT = 11
(c)
140
(c)
mVOP
VRECT
Rectifier Voltage
VMPX = 0mV
NRD
6) = 00
0.5
0.9
1.3
V
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
3)
means. with
VMPX = 800mV
(75KHz 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
4)
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
TS
Suppression Pulse
Duration
5)
Signal HOLDN
in Testmode
BLT = 00
TBD
38
TBD
s
BLT = 10
TBD
32
TBD
s
BLT = 01
TBD
25.5
TBD
s
BLT = 00
TBD
22
TBD
s
VRECTADJ
Noise Rectifier
discharge adjustment
6)
Signal PEAK in
Testmode
NRD = 00
6)
(c)
0.3
(c)
V/ms
NRD = 01
6)
(c)
0.8
(c)
V/ms
NRD = 10
6)
(c)
1.3
(c)
V/ms
NRD = 11
6)
(c)
2.0
(c)
V/ms
SRPEAK
Noise Rectifier Charge
Signal PEAK in
Testmode
PCH = 0
7)
(c)
10
(c)
mV/
s
PCH = 1
7)
(c)
20
(c)
mV/
s
(c) = by design/characterization functionally guaranteed through dedicated test mode structure
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 field-
strength 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
TDA7400
9/28
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