TDA7529_11 Datasheet, PDF (21/61 Pages) STMicroelectronics – RF front-end for AM/FM DSP car-radio with IF sampling

TDA7529
Electrical specifications
4.5
AM - section
Refer to application circuit in figure 3. V_CC = 4.7V to 5.35V; T_amb = -40 to +105°C; LW, MW
and SW bands; 74dBµV antenna level, unless otherwise specified. Antenna level
equivalence: 0dBµV = 1µVrms, all RF levels are intended as EMF.
Table 12. AM - section
Symbol
Parameter
Test condition, comments Min
Typ
Max Units
AM IMR Mixer and active balun
Gmix1
Δgmix1
Rin
Rout
-
Vin_max
Vnoise
IIP3
IIP2
IRR
IRR
Mixer conversion gain
Gain attenuation range
Input impedance
Output impedance
Min. external load
Max. output voltage
Input noise voltage
3^rd order intercept point
2^nd order intercept point
Image rejection ratio
Image rejection ratio
-
7.2
controlled by IF-AGC
18
-
5
-
15
-
400
without clipping (unloaded) 122
-
-
-
130
-
159
without gain/phase adjust
30
with gain/phase adjust
40
9
10.5
dB
20
-
dB
6.5
9.5
kΩ
20
30
Ω
-
-
Ω
-
-
dBµV
6
8.3 nV/√Hz
134
-
dBµV
-
-
dBµV
-
-
dB
45
-
dB
AM RF AGC
External capacitance for time constant from 1nF to 4700nF – time constant values are directly proportional to the
external capacitor value
Mixer input referred
Lthr
RF level threshold
min. setting
max setting
83
86
89
dBµV
98
101
104
-
threshold steps
4 bit control
0.5
1
1.5
dB
AGC control pin 1
-
Pin diode source current
Logarithmic current
10
-
-
mA
-
Min. voltage
AGC control pin 1 with 5µA
sink current
-
-
0.1
V
-
Isink
5µA sink current
5
10
-
µA
-
Pin diode source current in
constant current mode
-
1
-
-
mA
-
Max. voltage
AGC control pin 1
V_CC-
1.4
V_CC-1.2
-
V
-
Max. output voltage in GPO
mode
AGC control pin 2
V_DD-
0.3
-
V_DD
V
-
Min. output voltage
AGC control pin 2
-
-
0.3
V
Doc ID 13311 Rev 4
21/61