TDA7340G Datasheet, PDF (8/27 Pages) STMicroelectronics – AUDIO SIGNAL PROCESSOR

TDA7340G
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
NOISE INTERFERENCE DETECTOR
VTR
Trigger Threshold 7) 8)
(see pulse slope fig 3)
V_RECT
Rectifier Voltage
T_S
I_OS
V_RECTDEV
Suppression Pulse Duration
Input Offset Current During
Suppression Time
Deviation Dependent Rectifier
Voltage 9)
V_RECTFS
Field strength Controlled Rectifier
Voltage 10)
Test Condition
meas. with
NTB = 10
V_RECT = 1.2V _{NTB = 01}
NTB = 10
NTB = 01
meas. with
NTB = 00
V_RECT = 1.4V _{NTB = 11}
NTB = 10
NTB = 01
V_MPXIN = 0mV
V_MPXIN = 50mV;f = 200KHz
V_MPXIN = 100mV; f = 200KHz
CBLANK = 470pF
meas. with
V_MPX =500mV
(75KHz dev.)
meas. with
VMPX =
0mV,
V_SB = V_R = -
500 mV (Fully
Mono)
OVD = 11(off)
OVD = 10
OVD = 01
OVD = 00
FSC = 11(off)
FSC = 10
FSC = 01
FSC = 00
Min.
0.5
2.0
Typ.
100
130
160
190
150
200
250
300
0.9
1.9
2.9
40
10
0.9
1.3
2.3
3.2
0.9
1.2
1.8
2.2
Max.
1.3
3.4
Unit
mVP
mV_P
mV_P
mV_P
mV_P
mV_P
mV_P
mV_P
V
V
V
µs
pA
V
V
V
V
V
V
V
V
NOTES TO THE CHARACTERISTICS
1) INTERMODULATION SUPPRESSION
α2
=
VO (signal) (at1KHz)
V_O (spurious) (at1KHZ)
;
fs
=
(2
x
10KHz)
-
19KHz
α3
=
V_O (signal) (at1KHz)
VO (spurious) (at1KHZ)
;
fs
=
(3
x
13KHz)
-
38KHz
measured with : 91% mono signal; 9% pilot signal; fm=10KHz or 13KHz
2) TRAFFIC RADIO (V.F.) suppression
α57 (V.W.F.) =
VO
V_O(signal) (at1KHz)
(spurious) (at1KHZ ±23Hz)
measured with : 91% stereo signal; 9% pilot signal; fm=1KHz; 5% subcarrier
(f=57KHz, fm = 23Hz AM, m = 60%)
8/27