TDA7512 Datasheet, PDF (8/42 Pages) STMicroelectronics – AM/FM CAR RADIO TUNER IC WITH INTELLIGENT SELECTIVITY SYSTEM ISS

TDA7512
Table 3. ELECTRICAL CHARACTERISTICS (continued)
T_amb = +25°C, V_CC1 = V_CC2 = V_CC3 = V_CCVCO = V_CCMIX1 = V_CCIF1=8.5V, f_RF = 98MHz, dev. = 40kHz,
f_MOD = 1kHz, f_IF1 = 10.7MHz, f_IF2 = 450KHz, f_Xtal = 10.25MHz, in application circuit, unless otherwise
specified.
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
IF1 Amplifier1 +2 (10.7MHz)
G_min Min. gain
G_max Max. gain
R_IN Input resistance
R_OUT Output resistance
CP_1dB 1dB compression point
IIP3 3rd order Intermodulation
IFG
IFG
referred to 330Ω input
referred to 330Ω input
18
dB
26
dB
330
Ω
330
Ω
105
dBµV
126
dBµV
Mixer2 (450kHz)
R_IN Input impedance
V₄₆ Max. input voltage
V₄₈ Limiting sensitivity
G Mixer gain
S/N = 20dB
330
Ω
900
mV_RM
S
25
µV
18
dB
Limiter 1 (450kHz)
G_Limiter Gain
Demodulator, Audio Output
80
dB
THD
V_MPX
MPX output signal
R_OUT Output resistance
|∆V|_min DC offset fine adjust
|∆V|_max DC offset fine adjust
S/N
Quality Detection
Dev.= 75kHz, V₄₆ = 10mV_RMS
Dev.= 75kHz
DEM, MENA=1
DEM, MENA=1
Dev.= 40kHz,V₄₆ = 10mV_RMS
0.1
%
500
mV_RM
S
50
Ω
8.5
mV
264
mV
76
dB
S-meter, Unweighted Fieldstrength
V₄₆
V₁₄
V₁₄
∆V₁₄
∆V₁₄
Min. input voltage MIX2
Fieldstrength output
Fieldstrength output
voltage per decade
voltage per decade
V₄₆ = 0V_RMS
V₄₆ = 1V_RMS
SMSL = 0
SMSL = 1
10
µV
0.1
V
4.9
V
1
V
1.5
V
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