TDA7540B Datasheet, PDF (10/75 Pages) STMicroelectronics – AM/FM Car Radio Tuner IC with Stereo Decoder and Intelligent Selectivity System (ISS)

Electrical specifications
TDA7540B
Table 5.
Electrical characteristics (continued)
(T_amb = 25°C, V_CC1 = V_CC2 = V_CC3 = V_CCST= V_CCVCO = V_CCMIX1 = V_CCMIX2 = V_CCIF1 = 8.5V,
f_RF = 98MHz, dev= 40kHz, f_MOD = 1kHz, f_Xtal = 10.25MHz, in application circuit, unless
otherwise specified).
Item Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
5.7
C_IN Input capacitance
6 AGC Time Constant Output
2.5
pF
6.1
V₁₆ Max. AGC output voltage V_9-11 = 0mV_RMS
6.2
V₁₆ Min. AGC output voltage V_9-11 = 50mV_RMS
6.3
I₁₆
Min. AGC charge current V_9-11 = 0mV_RMS,V₁₆ = 2.5V
6.4
I₁₆
Max. AGC discharge
current
V_9-11 = 50mV_RMS,V₁₆ = 2.5V
V_REF1
+V_BE
V
0.5
V
-12.5
µA
1.25
mA
7 AGC PIN Diode Driver Output
7.1
I₈
AGC OUT, current min. V_9-11 = 0mV_RMS, V₈ = 2.5V
50
µA
7.2
I₈
AGC OUT, current max. V_9-11 = 50 mV_RMS, V₈ = 2.5V
-20
mA
8 I/Q Mixer1 (10.7MHz)
8.1
R_IN Input resistance
8.2
C_IN Input capacitance
8.3
R_OUT Output resistance
8.4
V_9,11 Input dc bias
8.5
g_m
Conversion
transconductance
differential
differential
differential
8.6
F
Noise figure
400Ω generator resistance
8.7 CP_1dB 1dB compression point referred to diff. mixer input
8.8
IIP3 3rd order intermodulation
8.9
IQP I/Q phase adjust
PH
8.10 IRR Image rejection ratio
ratio wanted/image
8.11 IRR Image rejection ratio
with phase adjust
10
4
100
3.2
17
3
100
122
-7
30
40
40
46
kΩ
pF
kΩ
V
ms
dB
dBµV
dBµV
+8
°
dB
dB
9 IF1 Amplifier1 +2 (10.7MHz)
9.1
G2 Gain
9.2
G1_min Min. gain
IFG1
9.3 G1_max Max. gain
IFG1
9.4
R_IN Input resistance
9.5
R_OUT Output resistance
9.6 CP_1dB 1dB compression point referred to 330Ω input
9.7
IIP3 3rd order Intermodulation ref. to 330Ω input, 9dB gain
6
dB
9
dB
18
dB
330
W
330
W
105
dBµV
126
dBµV
10 Mixer2 (450kHz)
10.1
R_IN Input impedance
10.2
V₆₅ Max. input voltage
330
Ω
119
dBµV
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