參數(shù)資料
型號(hào)： AN8946SB
廠(chǎng)商： PANASONIC CORP
元件分類(lèi)： 接收器
英文描述： FM demodulation IC for BS/CS broadcasting
中文描述： FM, AUDIO DEMODULATOR, PDSO28
封裝： 0.375 INCH, PLASTIC, SSOP-28
文件頁(yè)數(shù)： 3/10頁(yè)
文件大?。?/td> 86K
代理商： AN8946SB
ICs for TV
AN8946SB
3
I
Electrical Characteristics at T
a
=
25
°
C
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Total circuit current
I
TOT
GIF
max
V
CC
=
5 V
PIF
IN
=
60 dBm, f
=
402.78 MHz
V
17
=
5 V
PIF
IN
=
0 dBm, f
=
402.78 MHz
V
17
=
0 V
PLA in
=
30 dBm, f
=
1 MHz
PVA in
=
10 dBm, f
=
1 MHz
f
=
402.78 MHz
PIF
IN
=
30 dBm, 100
%
W, weighting
LPF 4.2 MHz, HPF 10 kHz
28
34
40
mA
IF amp. maximum gain
22
25
28
dB
IF amp. minimum gain
GIF
min
29
25
dB
Loop amp. gain
G
LA
22
24
26
dB
Video amp. gain
G
VA
β
6.5
7.0
7.5
dB
VCO control sensitivity
37
39
41
MHz/V
Signal to noise ratio
(C/N
=
∞
)
S/N
max
62
67
dB
Inter-modulation interference
ratio (2nd)
IM
2
PIF
IN
=
30 dBm, f
C
=
3.58 MHz
f
S
=
5.7272 MHz
PIF
IN
=
30 dBm, f
C
=
3.58 MHz
f
S
=
5.7272 MHz
40
60
dB
Inter-modulation interference
ratio (3rd)
IM
3
40
60
dB
AFC dead-band width
BW
AFC
Pin 2: Low, Pin 3: High
310
360
420
kHz
AFC output maximum voltage
V
AFCH
V
CC
V
3
value, f
=
402.78 MHz
V
2
value, f
=
402.78 MHz
V
CC
V
17
value, PIF
IN
=
70 dBm
PIF
IN
=
+
10 dBm
V
CC
V
16
value, PIF
IN
=
70 dBm
PIF
IN
=
+
10 dBm
f
=
402.78 MHz, PIF
M
=
50 dBm
Input level at V
16
=
2.5 V
39
0
0.5
V
AFC output minimum voltage
V
AFCL
0.1
0.5
V
AGC output maximum voltage 1 V
AGC1H
0
0.2
V
AGC output minimum voltage 1
V
AGC1L
0.3
0.5
V
AGC output maximum voltage 2 V
AGC2H
0
0.2
V
AGC output minimum voltage 2
V
AGC2L
Pin
SW
0.3
0.5
V
AGC SW level
35
31
dBm
Key pulse input maximum voltage
V
KEYH
DC measurement
0.35
V
Key pulse input minimum voltage
V
KEYL
V
N
DC measurement
0.1
V
Noise amplitude
f
=
402.78 MHz with no modulation
and with de-emphasis
Measure it at Video out pin.
4
10
mV[p-p]
Pin 12 voltage
V
12
Voltage to get V
17
=
0 V, V
2
≤
1 V,
V
3
≥
4 V with no PIF
IN
.
1.0
1.35
1.7
V
Pin 15 voltage
V
15
Voltage to be AFC center with no PIF
IN
,
V
17
=
0 V, f
VCO
=
402.78 MHz
1.03
1.15
1.27
V
Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
IF amp. frequency characteristic
f
CIF
3 dB down frequency
600
700
MHz
IF amp. NF
NF
IF
f
=
402.78 MHz, V
17
= 5 V
12
15
dB
Loop amp. frequency characteristic
f
CLA
3 dB down frequency
200
250
±
10
MHz
Loop amp. phase
PH
LA
f
=
1 MHz to 20 MHz
±
5
°
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