TDA7529_11 Datasheet, PDF (20/61 Pages) STMicroelectronics – RF front-end for AM/FM DSP car-radio with IF sampling

Electrical specifications
TDA7529
4.4
FM - section
Refer to application circuit in figure 3. V_CC = 4.7V to 5.35V; T_amb = -40 to +105°C; f_c = 76 to
108 MHz; 60dBµV antenna level; mono signal, unless otherwise specified. Antenna level
equivalence: 0dBµV = 1µV_rms, all RF levels are intended as PD.
Table 11. FM - section
Symbol
Parameter
Test condition, comments Min
Typ
Max Units
FM IMR Mixer and active balun
G_mix1
-
Mixer conversion gain
Gain attenuation range
R_in
Input impedance
R_out
V_{out_max}
Output impedance
Max. output voltage
v_noise Input noise voltage
IIP3
3^rd order intercept point⁽¹⁾
IIP2
2^nd order intercept point
IRR Image rejection ratio
FM RF AGC
Mixer input referred
L_thr
RF level threshold
-
Threshold steps
-
Pin diode source current
-
Pin diode sink current
-
Pin diode source current in
constant current mode
-
Threshold shift keyed AGC
1. parameter guaranteed by correlation.
mode 1 (unloaded)
mode 2 (unloaded)
controlled by IF-AGC
mode 1
mode 2
active balun
without clipping (unloaded)
Mode1, Rsource=1.5kΩ,
noiseless
Mode 2, Rsource=800,
noiseless
mode 1
up to Vin/tone = 90 dBµV
mode 2
up to Vin/tone = 98 dBµV
mode 1
mode 2
without gain/phase adjust
with gain/phase adjust
mode 1, min. setting
mode 1, max setting
mode 2, min. setting
mode 2, max setting
4 bit control
AGC control pin 1
Logarithmic current
AGC control pin 1
Logarithmic current
-
Control input = 1V
20
22
24
dB
14
16
18
18
20
-
dB
30
50
-
kΩ
5
6.5
9.5
15
20
30
Ω
122
-
-
dBµV
-
3
3.7
nV/√Hz
-
5
6
123
125
132
134
144
-
152
30
-
40
45
-
dBµV
-
dBµV
-
dB
-
82
85
88
97
100
103
dBµV
90
93
96
105
108
111
0.5
1
1.5
dB
10
-
-
mA
-
-
-3
mA
1
2
-
mA
10.5 12.5 13.5 dB/V
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Doc ID 13311 Rev 4