TDA7512 Datasheet, PDF (12/42 Pages) STMicroelectronics – AM/FM CAR RADIO TUNER IC WITH INTELLIGENT SELECTIVITY SYSTEM ISS

TDA7512
Table 4. ELECTRICAL CHARACTERISTICS
T_amb = +25°C, V_CC1 = V_CC2 = V_CC3 = V_CCVCO = V_CCMIX1 = V_CCMIX2 = 8.5V, f_RF = 1MHz, f_MOD = 400Hz at
30% AMf_IF1 = 10.7MHz, f_IF2 = 450kHz, f_xtal = 10.25MHz, in application circuit, (unless otherwise noted,
V_INRF antenna input).
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
Global
V_ANT Max. sensitivity
min
Ref.: V_INRF = 60dBµV,
19
dBµV
V_ANT us Usable sensitivity
(S+N)/N = 20 dB
30
26
dBµV
∆V_ANT IF2 AGC Range
Ref.: V_INRF = 60dBµV,
56
dB
(S+N)/N Signal to Noise Ratio
Ref.: V_INRF = 60ddBµV
50
60
dB
a_IF IF rejection
Ref: V_INRF = 60dBµV,
IF1 = 10.7MHz
100
dB
IF2 = 450kHz
100
dB
f_AF Frequency response
Ref.: V_INRF = 60dBµV,
∆V_AF = -3 dB
3.6
kHz
THD Total Harmonic Distortion
V_INRF = 60dBµV, m = 0.8
m = 0.3
V_INRF = 120 dbµV, m = 0.8
m = 0.3
0.5
%
0.3
1.0
0.3
V₃₇ Output level
V_INRF = 60dBµV
220
mV_RM
S
V₃₄ Output level
V_INRF = 60dBµ, m=off
190
mV_RM
S
V₃ Min. RF AGC threshold
Max. RF AGC threshold
WAGC
90
dBµV
109
dBµV
V₅₈ Min. IF AGC threshold
Max. IF AGC threshold
WAGC
90
dBµV
109
dBµV
V₅₈ Min. DAGC threshold
Max. DAGC threshold
DAGC
74
dBµV
96
dBµV
|I_40max| AGC2 charge current
seek
160
µA
CCR Charge current ratio
seek/seek off
30
AGC Voltage Driver Output
V₄ Max. AGC output voltage
3.5
V
V₄ Min. AGC output voltage
0.5
V
| I₄ | AGC current
100
µA
AGC PIN Diode Driver Output
I₅
AGC driver current
-2
mA
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