IF System. NTE1842 Datasheet

NTE1842 System. Datasheet pdf. Equivalent

Part NTE1842
Description Integrated Circuit FM/AM IF System
Feature NTE1842 Integrated Circuit FM/AM IF System Description: The NTE1842 is a FM/AM IF system IC in a 16–.
Manufacture NTE
Datasheet
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NTE1842
NTE1842
Integrated Circuit
FM/AM IF System
Description:
The NTE1842 is a FM/AM IF system IC in a 16–Lead DIP type package designed for portable use.
As compared with conventional ICs, this device is greatly improved in external parts counts and elec-
trical characteristics, espeically tweet and overload distortions.
Features:
D Low Supply Current, AM: 7mA, FM: 10mA (Typ)
D Low Number of External Components
D Excellent Tweet
D Low Overvoltage Distortion
D Tuning Indicator LED Driving Capability: ILAMP = 10mA (Max)
D Built–In FM/AM Mode Switch
D Common Output for FM/AM
D Operating Supply Voltage Range: VCC9opr) = 3V to 8V
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V
Lamp Current, ILAMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750mW
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6mW/°C
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25°C to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
DC Characteristics: (VCC = 5V, Pin Voltage at No Signal)
Parameter
Symbol
Pin1 Voltage (AM Mix Input)
Pin2 Voltage (AM Mix Bypass)
Pin3 Voltage (AM OSC)
Pin4 Voltage (Reg)
V1
V2
V3
V4
Typical
AM FM
1.5 0
1.5 0
2.3 2.3
2.3 2.3
Unit
V
V
V
V



NTE1842
DC Characteristics (Cont’d): (VCC = 5V, Pin Voltage at No Signal)
Parameter
Symbol
Pin5 Voltage (AM IF Output)
Pin6 Voltage (Meter Output)
Pin7 Voltage (LED)
Pin8 Voltage (GND)
Pin9 Voltage (Detector Output)
Pin10 Voltage (VCC)
Pin11 Voltage (FM Detector)
Pin12 Voltage (AM IF Bypass)
Pin13 Voltage (AM IF Input)
Pin14 Voltage (FM IF Bypass)
Pin15 Voltage (FM IF Input)
Pin16 Voltage (AM Mix Output)
V5
V6
V7
V8
V9
V10
V11
V12
V13
V14
V15
V16
Typical
AM FM
1.0 0.9
1.0 0.9
––
00
1.4 1.5
5.0 5.0
5.0 5.0
1.5 1.5
1.5 1.5
1.5 1.5
1.5 1.5
5.0 5.0
Unit
V
V
V
V
V
V
V
V
V
V
V
V
AC Characteristics: (VCC = 5V, TA = +25°C FM: f = 10.7MHz, f = ±22.5kHz, fm = 400Hz
AM: f = 1MHz, MOD = 30%, fm = 400Hz)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Supply Current
Pin5 Output Resistance
ICC FM VIN = 0
AM VIN = 0
R09 f = 1kHz
10 15 mA
7 10 mA
3.0
k
FM
Input Limiting Voltage
Recovered Output Voltage
SignaltoNoise Ratio
Total Harmonic Distortion
AM Rejection Ratio
Meter Drive Voltage
Lamp ON Sensitivity
AM
VIN(lim)
VOD
S/N
THD
AMR
VM
VL
3dB Limiting
VIN = 66dBµV
VIN = 80dBµV
VIN = 80dBµV
VIN = 80dBµV
VIN = 100dBµV
IL = 1mA
40 46 dBµ
57 85 114 mVrms
65
dB
0.05
%
38 dBµ
1.8
V
46 52 dB
Gain
Recovered Output Voltage
SignaltoNoise Ratio
Total Harmonic Distortion
Meter Drive Voltage
Lamp ON Sensitivity
Local OSC Stop Voltage
GV
VOD
S/N
THD
VM
VL
Vstop
VIN = 26dBµV
VIN = 60dBµV
VIN = 60dBµV
VIN = 60dBµV
VIN = 100dBµV
IL = 1mA
RDUMP =
15 30 75 mVrms
65 95 125 mVrms
47
dB
1.0
%
1.8
V
28 dBµ
1.5
V







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