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TDA7705 Arkusz danych(PDF) 18 Page - STMicroelectronics

Numer części TDA7705
Szczegółowy opis  Highly integrated tuner for AM/FM car radio
PDF  42 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7705 Arkusz danych(HTML) 18 Page - STMicroelectronics

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Electrical specifications
TDA7705
18/42
Doc ID 15938 Rev 8
3.4.2
AM - section
Table 8.
AM - section
Symbol
Parameter
Test condition
Min
Typ
Max
Units
AM IMR Mixer
Rin
Input resistance
-
20
30
45
k
Ω
Vout_max
Max. output voltage
without clipping
-
126
-
dBµV
VN,in
Input noise voltage
Mix 1, Rsource = 1 kΩ,
noiseless
-8.5
12
nV/
√Hz
Mix 2, Rsource = 1 kΩ,
noiseless
-8.5
12
IIP3
3rd order intercept point
Mix 1,2
up to Vin/tone = 90 dBµV
126
129
-
dBµV
IIP2
2nd order intercept point
Mix1 1,2
up to Vin/tone = 90 dBµV
-
158
-
dBµV
LO hsupp
LO harmonic suppression
N=2,3,4,5,6
-
100
-
dB
N=7,9
-
85
-
AM LNA
Gain
Voltage gain
Max Gain, Rext = 1 kΩ
21
25
28
dB
Min Gain (AGC controlled)
-
12
-
Rin
Input resistance
-
-
1000
k
Ω
Cin
Input capacitance
-
-
20
pF
VN,in
Input noise voltage
-
-
1.0
1.4
nV/
√Hz
IIP3
3rd order intercept point
@ maximum LNA gain
-
125
-
dBµV
IIP2
2nd order intercept point
@ maximum LNA gain
-
143
-
dBµV
AM PIN diode
IIP2
2nd order intercept point
Full attenuation,
Csource = 80 pF, f=1 MHz
-
140
-
dBµV
Rmin
Minimum resistance
-
-
50
80
Ω
Cin
Input capacitance
High ohmic
-
12
-
pF
AM AGC
AGC-Thr
Referred to mixer input
RF level
Mix 1,2 min setting
-
87
-
dBµV
Mix 1,2 max setting
-
93
-
Thr-steps
Threshold steps
-
-
1
-
dB
Threshold error
@ Tamb = 27 °C
-2.5
-
2.5
Threshold temperature drift
-
-3
-
3
-
Pin diode source current
@ Tamb = 27 °C; see note
(1)
2-
10
mA
-
Pin diode sink current
-
15
35
50
µA
-
Pin diode source current in
constant current mode
@ Tamb = 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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