TDA7511 Просмотр технического описания (PDF) - STMicroelectronics
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TDA7511 Datasheet PDF : 41 Pages
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TDA7511
ELECTRICAL CHARACTERISTCS (continued)
Tamb = +25°C, VCC1 = VCC2 = VCC3 = VCCVCO = VCCMIX1 = 8.5V, fRF = 98MHz, dev. = 40kHz,
fMOD = 1kHz, fIF1 = 10.7MHz, fIF2 = 450KHz, fXtal = 10.25MHz, in test or application circuit, unless otherwise
specified.
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
IP3 3rd order intercept point
122
dBµV
F
Noise figure
6
dB
AC Conversion gain
120
mS
IF1 Amplifier1 & 2 (10.7MHz)
Amin Min. gain
IFG
9
dB
Amax Max. gain
IFG
15
dB
RIN Input resistance
330
Ω
ROUT Output resistance
330
Ω
P1dB 1dB compression point
Output referred
120
dBµV
IP3 3rd order Intercept Point
Output referred
132
dBµV
Mixer2 (450kHz)
RIN Input impedance
330
Ω
V46 Max. input voltage
900
mVRM
S
V48 Limiting sensitivity
S/N = 20dB
25
µV
A Mixer gain
18
dB
Limiter 1 (450kHz)
GLimiter Gain
80
dB
Demodulator, Audio Output
THD
Dev.= 75kHz, V46 = 10mVRMS
0.1
%
VMPX MPX output signal
Dev.= 75kHz
500
mVRM
S
ROUT Output resistance
350
Ω
|∆V|min DC offset fine adjust
DEM, MENA=1
6
mV
|∆V|max DC offset fine adjust
DEM, MENA=1
186
mV
S/N
Dev.= 40kHz,V46 = 10mVRMS
75
dB
Quality Detection
S-meter, Unweighted Fieldstrength
V46 Min. input voltage MIX2
10
µV
∆V Per decade
SMSL = 0
1
V
∆V Per decade
SMSL = 1
1.5
V
V14 Fieldstrength output
V46 = 0VRMS
0.1
V
V14 Fieldstrength output
V46 = 1VRMS
4.9
V
ROUT Output resistance
4
kΩ
7/41
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