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TDA7786 数据表(PDF) 30 Page - STMicroelectronics

部件名 TDA7786
功能描述  ELITE automotive tuners for AM/FM car-radio
PDF  54 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7786 数据表(HTML) 30 Page - STMicroelectronics

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Electrical specifications
TDA7786, TDA7786M
30/54
DocID026122 Rev 5
3.4.2
AM - section
IFAGC-Thr
IFAGC threshold
min setting
120
122
124
dBµV
max setting
126
128
130
dBµV
Threshold steps
-
1.5
2
2.5
dB
Threshold error
@ Tamb
-1.5
-
1.5
dB
Threshold temperature drift
-
-
0.016
-
dB/K
Time
constant
I attack
Slow attack
10
20
30
µA
Fast attack
100
200
300
I decay
Slow decay
1
2
5
Fast decay
10
20
30
-
PIN diode source current
@ Tamb (2)
-15
-
-
mA
-
PIN diode sink current
-
3
-
20
µA
-
PIN diode source current in
constant current mode
@ Tamb
-0.9
-
-
mA
1. The gain is internally 6 dB higher than what measured at the test output. This is due to the differential to single-ended
conversion used for the test output.
2. The current is generated by a PTAT (proportional to absolute temperature) source, and has therefore a temperature
dependency described by: ∆I/Io = ∆T/To, with Io being the current at ambient temperature (25 °C) and To the ambient
temperature (25 °C) expressed in Kelvin, that is 298K.
Table 17. FM - section (continued)
Symbol
Parameter
Test condition
Min
Typ
Max
Units
Table 18. AM - section
Symbol
Parameter
Test condition
Min
Typ
Max
Units
AM IMR Mixer
Gain
Voltage gain (mix in -> s.e.
test output)(1)
normal
20
22
24
dB
reduced
17
19
21
Rin
Input resistance
-
20
30
45
k
Vnoise
Input noise voltage
Mix 1, 2
Rsource = 1 kΩ, noise-less
-7.5
9
nV/
Hz
IIP3
3rd order intercept point
Mix1, 2
up to Vin/tone = 90 dBµV
128
132
-
dBµV
IIP2
2nd order intercept point
Mix1, 2
up to Vin/tone = 90 dBµV
152
158
-
dBµV
LO hsupp
LO harmonic suppression
-
80
-
-
dB
AM LNA
Gain
Voltage gain
Max gain, Rext = 470 Ω
24
28
32
dB
Min gain (AGC controlled)
8
12
16
Rin
Input resistance
-
600
950
1300
kΩ
Cin
input capacitance
-
-
20
-
pF



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