E-TDA7421N 查看數據表（PDF） - STMicroelectronics
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E-TDA7421N Datasheet PDF : 47 Pages
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Electrical specifications
3
Electrical specifications
TDA7421N
3.1
Absolute maximum ratings
Table 3. Absolute maximum ratings
Symbol
Parameter
Tamb
Tstg
VCC
VDD
Operating temperature range
Storage Temperature Range
Analog Supply Voltages (PLL, RF, IF1, IF2, OSC)
Digital Supply Voltage
Value
Unit
-40 to 85
°C
-55 to 150
°C
10.2
V
5.5
V
3.2
Thermal data
Table 4. Thermal data
Symbol
Parameter
Rth j-amb, fa Thermal resistance junction to ambient, free air
Rth j-amb, sol Thermal Resistance Junction to ambient, soldered
Typ. Value
68
55
Unit
°C/W
°C/W
3.3
FM section global performances
Table 5.
FM section global performances
Refer to evaluation circuit– Input 98.1 MHz, 40 kHz dev., 1 kHz mod., 60 dBmV antenna
level, mono.– MPX Output, de-enphasis 50 ms, BPF 200 Hz-15 kHz
Symbol
Parameter
Test condition
Min. Typ. Max. Unit
FM ICC
S+N/N
Total supply current including
mixer
Signal to noise ratio
90
mA
66
dB
THD
VO AF
Total harmonic distortion
Audio output level
US1 Usable sensitivity (40dB)
US2
AGCSP
Usable sensitivity (26dB)
AGC starting point
75 kHz Deviation
antenna level at which
S+N/N = 40 dB
antenna level at which
S+N/N = 26 dB
0.3
%
400
mVRM
S
0
dBμV
-6
dBμV
55
dBμV
10/47
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