NTE1490
Integrated Circuit
FM/AM Radio Receiver System
16−Lead DIP
Features:
D
Stability is improved by use of the full balance DC feedback type differential IF amplifier
D
High sensitivity (Input limiting sensitivity is 32dBμ)
D
Large detection output (450mV
rms
typ, 100% mod.)
D
Utilizing the external resistance it can be changed freely
D
High S/N (77dBμ)
D
Wide operation supply voltage
Absolute Maximum Ratings:
(T
A
= +25°C unless otherwise specified)
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V
Supply Current, I
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36.4mA
Power Dissipation, P
T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450mW
Operating Ambient Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−20°
to +75°C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−55°
to +125°C
Electrical Characteristics:
(T
A
= +25°C unless otherwise specified)
Parameter
FM Characteristics
Quiescent Current
Recovered AF Voltage
Total Harmonic Distortion
Limiting Sensitivity
Signal to Noise Ratio
AM Rejection Ratio
Signal Meter Output
AM Characteristics
Recovered AF Voltage
Total Harmonic Distortion
Usualy Sensitivity
Signal to Noise Ratio
e
O
2
THD
S
IF
S/N
2
74dBμ
e
o2
= 10mV
rms
74dBμ compared with e
O2
80
−
−
−
110
0.3
31
55
160
2.0
37
−
mV
rms
%
dBμ
dB
l
o
e
o1
THD
V
in
(lim)
S/N
AMR
V
M
106dBμ, R
L
= 20k
50μs, de−emphasis
−3dB
point
106dBμ compared with e
O1
106dBμ AM out as compared with e
O1
106dBμ
−
285
−
−
67
35
1.34
24.7
450
0.3
32
77
50
1.60
36.4
600
1.0
37.5
−
−
1.86
mA
mV
rms
%
dBμ
dB
dB
V
DC
Symbol
Test Conditions
Min
Typ
Max
Unit
FM:
AM:
f
c
= 10.7MHz, fm = 400Hz,
ΔF
= 75kHz Div
f
c
= 455kHz, fm = 400Hz, 30% MOD
单片机
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