參數(shù)資料
型號: TDA7540N
廠商: STMICROELECTRONICS
元件分類: 調(diào)諧器
英文描述: 2-BAND, AUDIO TUNER, PQFP80
封裝: 14 X 14 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-80
文件頁數(shù): 6/76頁
文件大?。?/td> 1225K
代理商: TDA7540N
Electrical specifications
TDA7540N
RIN
Input resistance
260
330
400
W
ROUT
Output resistance
260
330
400
W
CP1dB
1dB compression point
referred to 330
Ω input
105
dB
μV
IIP3
3rd order Intermodulation
ref. to 330
Ω input, 9dB gain
126
dB
μV
Mixer2 (450kHz)
RIN
Input impedance
260
330
400
Ω
V65
Max. input voltage
119
dB
μV
V65
Limiting sensitivity
S/N = 20dB
28
dB
μV
G
Mixer gain
18
dB
Limiter 1 (450kHz)
GLimiter
Gain
80
dB
Demodulator, audio output
THD
Dev.= 75kHz, V65= 10mVRMS
0.1
%
VMPX
MPX output signal
Dev.= 75kHz
400
500
600
mVRMS
ROUT
Output impedance
50
Ω
|
ΔV|
min
DC offset fine adjust
DEM, MENA=1
8.5
mV
|
ΔV|
max
DC offset fine adjust
DEM, MENA=1
264
mV
S/N
Dev.= 40kHz,V65 = 10mVRMS
76
dB
VMPXW
MPXW output signal
Dev.= 75kHz
280
350
420
mVRMS
Quality detection
S-meter, unweighted fieldstrength
V65
Min. input voltage MIX2
30
dB
μV
V22
Fieldstrength output
V65 = 20dBV
0.1
V
V22
Fieldstrength output
V65 = 80dBV, SMSL = 0
2.2
2.6
3.0
V
ΔV
22
Voltage per decade
SMSL = 0
0.8
1
1.2
V
ΔV
22
Voltage per decade
SMSL = 1
1.2
1.5
1.8
V
ΔV
22
S-meter offset
SL, SMSL=1
-15
15
dB
ROUT
Output impedance
280
400
520
Ω
TK
Coefficient temperature
0
ppm/K
Table 6.
FM section electrical characteristics (continued)
(Tamb = 25°C, VCC1 = VCC2 = VCC3 = VCCST= VCCVCO = VCCMIX1 = VCCMIX2 = VCCIF1 = 8.5V,
fRF = 98MHz, dev= 40kHz, fMOD = 1kHz, fXtal = 10.25MHz, in application circuit, unless
otherwise specified).
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
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