TDA7540N Datasheet, PDF (18/76 Pages) STMicroelectronics – AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system (ISS)

Electrical specifications
TDA7540N
Table 7.
AM section 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, m= 30%, f_MOD = 400kHz, f_Xtal = 10.25MHz, in application circuit, unless
otherwise specified).
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
V₂₄
V₄
V₇₁
V₇₁
|I_78max|
CCR
IF output level
Min. RF AGC threshold
Max. RF AGC threshold
Min. IF AGC threshold
Max. IF AGC threshold
Min. DAGC threshold
Max. DAGC threshold
AGC2 charge current
Charge current ratio
V_INRF = 60dBµV, m=off
WAGC
WAGC
DAGC
seek
seek/seek off
190
mV_RMS
97
dBμV
109
dBμV
96.5
dBμV
109
dBμV
74
dBμV
96
dBμV
80
100 120
μA
30
AGC voltage driver output
V₆
Max. AGC output voltage
V₆
Min. AGC output voltage
| I₆ | AGC current
AGC pin diode driver output
3.5
V
0.5
V
100
μA
I₇
AGC driver current
AM Mixer1 (10.7MHz)
-2.6
-2
-1.4
mA
R_IN
C_IN
R_OUT
CP_1dB
IIP3
F
A
Input resistance
Input capacitance
Output impedance
1dB compression point
3rd order intermodulation
Noise figure
Gain
differential
differential
differential
referred to diff. mixer input
100
4
100
112
132
8
26
kΩ
pF
kΩ
dBμV
dBμV
dB
dB
C_min
C_max
C_1-80
Min. capacitance step
Max. capacitance
AM Mixer2 (450kHz)
IF1T
IF1T
IF1T
0.55
pF
8.25
pF
2
pF
R₇₁
C₇₁
CP_1dB
IIP3
F
Input resistance
Input capacitance
1dB compression point
3rd order intermodulation
Noise figure
referred to diff. mixer input
260 330 400
W
2.5
pF
120
dBμV
132
dBμV
12
dB
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