NTE NTE1624 Datasheet
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, V
Supply Current, I
Power Dissipation (TA ≤ +65°C), P
CC
CC
D
Derate Above 25°C 10mW/°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
Storage Temperature Range, T
opr
stg
Thermal Resistance, Junction–to–Ambient, R
–18° to +65°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–40° to +125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
thJA
11V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
44mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
600mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
100°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (TA = +25°C, f
fM=1KHz, VIN=SG Open Voltage –6dB unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Quiescent Current I
Terminal Voltage (Pin16) V
Limiting Voltage V
Internal Regulated Voltage V
Terminal Voltage (Pin16) V
CCQ
16(FM)
IN(lim)
CC
16(AM)
SW → FM, VCC = 3V 7 12 17 mA
SW → FM, VCC = 9V 10 17 23 mA
SW1 → FM, ICC = 42mA, No Signal 2.0 2.4 3.1 V
SW → FM, VCC = 5.5V, –3dB, V16 = 2.4V,
VR = Min
SW1 → AM, ICC = 42mA 12.5 13.2 14.0 V
SW1 → AM, VCC = 9V, No Signal 1.4 – 1.9 V
= 1MHz, Mod=30%, f
(AM)
=10.7MHz ∆F=22.5kHz,
(FM)
– 57 – dBµV
Electrical Characteristics (Cont’d): (TA = +25°C, f
∆F=22.5kHz, fM=1KHz, VIN=SG Open Voltage –6dB unless
otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
= 1MHz, Mod=30%, f
(AM)
=10.7MHz
(FM)
Maximum Sensitivity V
SW → AM, VCC = 12V, VIN = 37dB,
O
SW → 45Ω, V16 = 1.4V
Quieting Sensitivity S/N SW1 → AM, VCC = 5.5V,
SW → 8Ω, VIN = 37.5dB
Output Power P
OUT
SW → 8Ω, VCC = 5.5V, f = 1kHz,
VH = Min., THD = 10%
Total Harmonic Distortion THD SW → 45Ω, ICC = 42mA, f = 1kHz,
Voltage Gain G
Pin2 Input Impedance (AM) R
Pin2 Input Impedance (FM) R
ip2 (AM)
C
ip2 (AM)
ip2 (FM)
C
ip2 (FM)
Pin4 Output Impedance R
C
Pin6 Input Impedance R
C
Pin14 Input Impedance (AM) R
Pin14 Input Impedance (FM) R
Pin15 Output Impedance (AM) R
Pin15 Output Impedance (FM) R
ip14 (AM)
C
ip14 (AM)
ip14 (FM)
C
ip14 (FM)
op15 (AM)
C
op15 (AM)
op15 (FM)
C
op15 (FM)
V
op4
op4
ip6
ip6
VR = Min., V
SW → 8Ω, VCC = 5.5V, f = 1kHz, VR = Min. – 40 – dB
f = 455kHz – 200 – kΩ
f = 10.7MHz – 30 – kΩ
f = 455kHz – 300 – kΩ
f = 1MHz – 50 – kΩ
f = 455kHz – 300 – kΩ
f = 10.7MHz – 300 – kΩ
f = 455kHz – 300 – kΩ
f = 10.7MHz – 300 – kΩ
OUT
= 2V
1.5 3.0 – V
15 20 – dB
0.28 – – W
– 0.5 4.0 %
– 3.0 – pF
– 3.5 – pF
– 6.0 – pF
– 5.0 – pF
– 3.5 – pF
– 4.0 – pF
– 5.5 – pF
– 6.0 – pF
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