NTE NTE1624

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 Possible to Construct a Complete AM/FM Radios Receivers.
D Wide Operating Voltage Range: 3V to Approx 13V, Depending on the Internal Regulator Tolerance.
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
Quiescent Current
Symbol
ICCQ
Test Conditions
Min
Typ
Max
Unit
SW → FM, VCC = 3V
7
12
17
mA
SW → FM, VCC = 9V
10
17
23
mA
2.0
2.4
3.1
V
–
57
–
dBµV
SW1 → AM, ICC = 42mA
12.5
13.2
14.0
V
SW1 → AM, VCC = 9V, No Signal
1.4
–
1.9
V
Terminal Voltage (Pin16)
V16(FM)
SW1 → FM, ICC = 42mA, No Signal
Limiting Voltage
VIN(lim)
SW → FM, VCC = 5.5V, –3dB, V16 = 2.4V,
VR = Min
Internal Regulated Voltage
Terminal Voltage (Pin16)
VCC
V16(AM)
Electrical Characteristics (Cont’d):
Parameter
(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)
Symbol
Test Conditions
Min
Typ
Max
Unit
Maximum Sensitivity
VO
SW → AM, VCC = 12V, VIN = 37dB,
SW → 45Ω, V16 = 1.4V
1.5
3.0
–
V
Quieting Sensitivity
S/N
SW1 → AM, VCC = 5.5V,
SW → 8Ω, VIN = 37.5dB
15
20
–
dB
0.28
–
–
W
Output Power
POUT
SW → 8Ω, VCC = 5.5V, f = 1kHz,
VH = Min., THD = 10%
Total Harmonic Distortion
THD
SW → 45Ω, ICC = 42mA, f = 1kHz,
VR = Min., VOUT = 2V
–
0.5
4.0
%
SW → 8Ω, VCC = 5.5V, f = 1kHz, VR = Min.
–
40
–
dB
f = 455kHz
–
200
–
kΩ
–
3.0
–
pF
–
30
–
kΩ
–
3.5
–
pF
–
300
–
kΩ
–
6.0
–
pF
–
50
–
kΩ
–
5.0
–
pF
Rip14 (AM) f = 455kHz
–
300
–
kΩ
Cip14 (AM)
–
3.5
–
pF
–
300
–
kΩ
Cip14 (FM)
–
4.0
–
pF
Rop15 (AM) f = 455kHz
–
300
–
kΩ
Cop15 (AM)
–
5.5
–
pF
Rop15 (FM) f = 10.7MHz
–
300
–
kΩ
Cop15 (FM)
–
6.0
–
pF
Voltage Gain
Pin2 Input Impedance (AM)
GV
Rip2 (AM)
Cip2 (AM)
Pin2 Input Impedance (FM)
Rip2 (FM)
f = 10.7MHz
Cip2 (FM)
Pin4 Output Impedance
Rop4
f = 455kHz
Cop4
Pin6 Input Impedance
Rip6
f = 1MHz
Cip6
Pin14 Input Impedance (AM)
Pin14 Input Impedance (FM)
Pin15 Output Impedance (AM)
Pin15 Output Impedance (FM)
Rip14 (FM)
f = 10.7MHz
Pin Connection Diagram
IF Bypass 1
AM/FM IF Input 2
RF GND 3
AM IF Output 4
AM OSC 5
AM RF Input 6
RF Bypass 7
Audio Det Output 8
16 AGC Bypass
15 AM/FM IF Output
14 IF Det Input
13 VCC (+)
12 Audio Power Output
11 Audio GND
10 Ripple Rejection
9 Audio Power Input
16
9
.260 (6.6) Max
1
8
.785 (19.9) Max
.300 (7.62)
.200 (5.08)
Max
.245
(6.22)
Min
.100 (2.54)
.700 (17.7)