NTE1654
Integrated Circuit
FM/AM IF System (Low Supply Voltage Use)
Features:
D FM IF Amplifier
D AM Detector
D FM Quadrature Detector
D AM Mixer
D Signal Meter Driver
D Low Supply Voltage Use: VCC = 3V to 8V
D Very Few External Parts
D AM Local Oscillator
D AM IF Amplifier
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V
Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750mW
Derated Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6mW/°C
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Electrical Characteristics: (TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
FM
Supply Current
I
V
V
= 0 at FM
= 0 at AM
–
–
17
15
34
60
70
0.3
50
31
31
40
80
–
mA
mA
CC
IN
IN
Input Limiting Voltage
Recovered Output Voltage
Signal to Noise Ratio
Total Harmonic Distortion
AM Rejection Ratio
V
–3dB Limiting
∆f = ±22.5kHz, V = 60dBµV
–
dBµV
IN(lim)
V
OD(1)
40
–
mV
rms
IN
S/N(1)
THD(1)
AMR
V
IN
V
IN
= 80dBµV
= 80dBµV
dB
–
–
%
AM: 1kHz, 30%, FM: ∆f = ±22.5kHz
= 80dBµV
–
–
dB
V
IN
Meter Driver Voltage
AM
V
2(FM)
V = 80dBµV
In
0.8
1.0
1.2
V
(DC)
Recovered Output Voltage
Gain
V
V
= 60dBµV
90
10
–
130 180 mV
OD(AM)
IN
rms
GAIN
f
IN
= 455kHz, V = 20dBµV
24
1.0
1.0
40
52
–
mV
IN
rms
Meter Driver Voltage
Total Harmonic Distortion
Signal to Noise Ratio
Local OSC. Stop Voltage
V
V
IN
= 60dBµV
V
DC
2(AM)
THD(AM) V = 60dBµV
–
–
%
IN
S/N(AM)
V
IN
= 60dB
–
–
dB
V
stop
–
1.5
–
V
DC