TDA7541 Datasheet, PDF (12/76 Pages) STMicroelectronics – AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system

Electrical specifications and characteristics
TDA7541
Table 6. FM section (continued)
(T_amb = 25°C, V_CC1 = V_CC2 = V_CCMIX1 = V_CCVCO = V_CCIF = 8.5V, f_Xtal = 10.25 MHz,
f_RF = 98MHz, dev = 40 kHz, f_Mod = 1 kHz, in application circuit, unless otherwise specified)
Item Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
6.4
I₁₃
Max. AGC discharge
current
V_8-10 = 100mV_RMS,V₁₃ = 2.5V
1.7
2.5
3.3 mA
7. AGC PIN diode driver output
7.1
I₁₂ AGC OUT, current min. V_8-10 = 0mV_RMS, V₁₂ = 2.5V
15
25
35
µA
7.2
I₁₂ AGC OUT, current max. V_8-10 = 50 mV_RMS, V₁₂ = 2.5V
-16 mA
8. FM 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_8,11 Input DC bias
8.5
G Gain
Differential
Differential
Unloaded
8.6
G_l
Gain
8.7 INOISE Equivalent input noise
With 330Ω load
8.8 CP_1dB 1dB compression point Referred to diff. mixer input
8.9
IIP3 3^rd order intermodulation
8.10 IQP I/Q phase adjust
PH
8.11 IRR Image rejection ratio
Ratio wanted/image
8.12 IRR Image rejection ratio
With phase adjust
8
10
12
kΩ
4
pF
530 660 790 Ω
2.2 2.5
2.8
V
20
22
24
dB
14
16
18
dB
3
nV/√Hz
100
dBµV
119
dBµV
-7
+8 DEG
30
40
dB
40
46
dB
9. WB I/Q Mixer1 (10.7MHz)
9.1
R_IN Input resistance
9.2
R_OUT Output resistance
9.3
V₅ Input dc bias
9.4
G Gain
Single ended
unloaded
9.5 INOISE Equivalent Input noise Source impedance 400Ω
9.6
IIP3 3^rd order intermodulation
7
10
13
kΩ
530 660 790 Ω
2
2.3
2.6
V
24
26
28
dB
2.3
nV/√Hz
113
dBµV
10. IF1 amplifier (10.7MHz)
10.1
R_IN Input resistance
10.2
C_IN Input capacitance
10.3
V₆₁ DC input voltage
10.4 R_OUT Output resistance
10.5 C_OUT Output capacitance
10.6
V₅₉ DC output voltage
10.7 G_min Min. gain
IFG
265 330 396 Ω
2.5
pF
V_CCIF1/3
V
265 330 396 Ω
2.5
pF
V_CCIF1/2
V
9
dB
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