參數(shù)資料
型號(hào): TDA7421N
廠商: STMICROELECTRONICS
元件分類: 接收器
英文描述: AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
封裝: TQFP-64
文件頁數(shù): 2/47頁
文件大?。?/td> 374K
代理商: TDA7421N
Electrical specifications
TDA7421N
3
Electrical specifications
3.1
Absolute maximum ratings
3.2
Thermal data
3.3
FM section global performances
Table 3.
Absolute maximum ratings
Symbol
Parameter
Value
Unit
Tamb
Operating temperature range
-40 to 85
°C
Tstg
Storage Temperature Range
-55 to 150
°C
VCC
Analog Supply Voltages (PLL, RF, IF1, IF2, OSC)
10.2
V
VDD
Digital Supply Voltage
5.5
V
Table 4.
Thermal data
Symbol
Parameter
Typ. Value
Unit
Rth j-amb, fa Thermal resistance junction to ambient, free air
68
°C/W
Rth j-amb, sol Thermal Resistance Junction to ambient, soldered
55
°C/W
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
Total supply current including
mixer
90
mA
S+N/N
Signal to noise ratio
66
dB
THD
Total harmonic distortion
0.3
%
VO AF
Audio output level
75 kHz Deviation
400
mVRM
S
US1
Usable sensitivity (40dB)
antenna level at which
S+N/N = 40 dB
0dB
μV
US2
Usable sensitivity (26dB)
antenna level at which
S+N/N = 26 dB
-6
dB
μV
AGCSP
AGC starting point
55
dB
μV
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