NTE1842 データシートの表示（PDF） - NTE Electronics
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NTE1842 Datasheet PDF : 3 Pages
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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
Typical
Symbol
AM
Unit
FM
Pin1 Voltage (AM Mix Input)
Pin2 Voltage (AM Mix Bypass)
Pin3 Voltage (AM OSC)
V1
1.5
V2
1.5
V3
2.3
0
V
0
V
2.3
V
Pin4 Voltage (Reg)
V4
2.3
2.3
V
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