NTE1624
Integrated Circuit
AM/FM Radio Circuit w/Power Amp
Features:
D Suitable for Use in AM/FM Portable Radios or Main–fed AM/FM Clock Radios.
D Incorporates AM RF Amp, AM Local Oscillator, AM Mixer, AM/FM IF Amp, AM/FM Detector,
AM AGC Circuit, FM AFC Circuit and B Class–Audio Power Amplifier.
D Using the NTE1624, Plus the Discrete Input Stage (for FM: RF Amp and Converter), It is Pos-
sible to Construct a Complete AM/FM Radios Receivers.
D Wide Operating Voltage Range: 3V to Approx 13V, Depending on the Internal Regulator Toler-
ance.
D As the Internal Shunt Voltage Regulator Circuit is Connected to the Supply Voltage Terminal, it
Permits a Constant Current Mode (Approximately 42mA) of Operation which is Desirable for
Line–Operated Equipments.
D AM to FM Switching is Accomplished by Switching Only DC Circuitry.
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11V
Supply Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44mA
Power Dissipation (TA ≤ +65°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600mW
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mW/°C
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –18° to +65°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +125°C
Thermal Resistance, Junction–to–Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100°C/W
Electrical Characteristics: (TA = +25°C, f(AM)= 1MHz, Mod=30%, f(FM)=10.7MHz ∆F=22.5kHz,
fM=1KHz, VIN=SG Open Voltage –6dB unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ Max Unit
Quiescent Current
I
SW → FM, V = 3V
7
12
17
2.4
57
17
23
3.1
–
mA
mA
CCQ
CC
SW → FM, V = 9V
10
2.0
–
CC
Terminal Voltage (Pin16)
Limiting Voltage
V
16(FM)
SW1 → FM, I = 42mA, No Signal
V
CC
V
IN(lim)
SW → FM, V = 5.5V, –3dB, V = 2.4V,
dBµV
CC
16
VR = Min
Internal Regulated Voltage
Terminal Voltage (Pin16)
V
SW1 → AM, I = 42mA
12.5 13.2 14.0
1.4 1.9
V
V
CC
CC
V
SW1 → AM, V = 9V, No Signal
–
16(AM)
CC