TDA7512 Datasheet, PDF (7/42 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
V₆₀ Lower threshold start with KAGC KAGC = max, V_7-9 = 0mV_RMS,
∆f_IF=300KHz
V₃₅ Startpoint KAGC
KAGC = max, V_7-9 = 0mV_RMS,
∆f_IF=300KHz
f_IF1 generate FSW level at V₃₅
∆
Control range KAGC
∆V₃₅= +0.4V
R_IN Input resistance
C_IN Input capacitance
AGC Time Constant Output
98
dBµV
3.6
V
16
dB
10
kΩ
2.5
pF
V₁₀ Max. AGC output voltage
V₁₀ Min. AGC output voltage
I₁₀ Min. AGC charge current
I₁₀ Max. AGC discharge current
AGC PIN Diode Driver Output
I₆
AGC OUT, current min.
I₆
AGC OUT, current max.
I/Q Mixer1 (10.7MHz)
V_7-9 = 0mV_RMS
V_7-9 = 50mV_RMS
V_7-9 = 0mV_RMS,V₁₀ = 2.5V
V_7-9 = 50mV_RMS,V₁₀ = 2.5V
V_7-9 = 0mV_RMS, V₆ = 2.5V
V_7-9 = 50 mV_RMS, V₆ = 2.5V
V_REF1
V
+V_BE
0.5
V
-12.5
µA
1.25
mA
50
µA
-20
mA
R_IN Input resistance
C_IN Input capacitance
R_OUT Output resistance
V_7,9 Input dc bias
g_m Conversion transconductance
F
Noise figure
CP_1dB 1dB compression point
IIP3 3rd order intermodulation
differential
differential
differential
400Ω generator resistance
referred to diff. mixer input
10
4
100
3.2
17
3
100
122
kΩ
pF
kΩ
V
mS
dB
dBµV
dBµV
IQG I/Q gain adjust
G
-1
+1
%
IQP I/Q phase adjust
PH
-7
+8 DEG
IRR Image rejection ratio
ratio wanted/image
30
40
dB
IRR Image rejection ratio
with gain and phase adjust
40
46
dB
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