TDA7705_10 Datasheet, PDF (18/42 Pages) STMicroelectronics – Highly integrated tuner for AM/FM car radio

Electrical specifications
TDA7705
3.4.2 AM - section
Table 8. AM - section
Symbol
Parameter
Test condition
Min
Typ
Max Units
AM IMR Mixer
R_in
V_{out_max}
Input resistance
Max. output voltage
V_N,in Input noise voltage
IIP3
3^rd order intercept point
IIP2
2^nd order intercept point
LO hsupp LO harmonic suppression
-
without clipping
Mix 1, R_source = 1 kΩ,
noiseless
Mix 2, R_source = 1 kΩ,
noiseless
Mix 1,2
up to V_in/tone = 90 dBµV
Mix1 1,2
up to V_in/tone = 90 dBµV
N=2,3,4,5,6
N=7,9
20
30
-
126
-
8.5
-
8.5
126
129
-
158
-
100
-
85
45
kΩ
-
dBµV
12
nV/√Hz
12
-
dBµV
-
dBµV
-
dB
-
AM LNA
Gain
R_in
C_in
V_N,in
IIP3
IIP2
Voltage gain
Input resistance
Input capacitance
Input noise voltage
3^rd order intercept point
2^nd order intercept point
Max Gain, R_ext = 1 kΩ
Min Gain (AGC controlled)
-
-
-
@ maximum LNA gain
@ maximum LNA gain
21
25
28
dB
-
12
-
-
1000
kΩ
-
20
pF
-
1.0
1.4 nV/√Hz
-
125
-
dBµV
-
143
-
dBµV
AM PIN diode
IIP2
R_min
C_in
AM AGC
2^nd order intercept point
Minimum resistance
Input capacitance
Full attenuation,
C_source = 80 pF, f=1 MHz
-
High ohmic
-
140
-
dBµV
-
50
80
Ω
-
12
-
pF
Referred to mixer input
AGC-Thr
RF level
Mix 1,2 min setting
Mix 1,2 max setting
-
87
-
dBµV
-
93
-
Threshold steps
-
-
1
-
Thr-steps Threshold error
@ T_amb = 27 °C
-2.5
-
2.5
dB
Threshold temperature drift -
-3
-
3
-
Pin diode source current
@ T_amb = 27 °C; see note⁽¹⁾
2
-
10
mA
-
Pin diode sink current
-
15
35
50
µA
-
Pin diode source current in
constant current mode
@ T_amb = 27 °C; see note⁽¹⁾
1.5
2.5
3.5
mA
1. The current is generated by a PTAT (Proportional To Absolute Temperature) source, and has therefore a temperature
dependency described by: ΔI/Io = ΔT/To, with Io being the current at ambient temperature (25 °C) and To the ambient
temperature (25 °C) expressed in Kelvin, that is 298 K.
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