NTE744 Datasheet, PDF (1/3 Pages) NTE Electronics – Integrated Circuit RF/IF Amp

NTE744
Integrated Circuit
RF/IF Amp
Description:
The NTE744 is a monolithic silicon integrated circuit that provides an rf amplifier, if amplifier, mixer,
oscillator, AGC detector, and voltage regulator on a single chip. It is intended for use in super–hetero-
dyne AM radio receiver applications particularly in automobiles. The NTE744 is supplied in a 14–lead
dual–in–line plastic package and operates over the temperature range of –55° to 125°C.
Features:
D Low–noise, low–R_b, rf stage in cascode connection–eliminates Miller–Effect regeneration and
allows controlled power rise by the choice of external components.
D Mixer–oscillator stage with internal feedback–eliminates need for tapped or multi–winding os-
cillator coils
D Cascode if amplifier with controlled output impedance and negligible Miller Effect–eliminates
regeneration and selectivity skewing
D Frequency–counter AGC circuit–allows control of AGC response by selection of the coupling
capacitor.
D Integral regulation with built–in surge protection
D Separately accessible amplifiers
Absolute Maximum Ratings:
DC Supply Voltage (Pin3), V+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9V
DC Supply Voltage (IF Output, Pin6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
DC Supply Voltage (RF Output, Pin13) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V
DC Supply Voltage (Mixer Output, Pin14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V
DC Current (Pin3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35mA
Power Dissipation (Up to T_A = +55°C), P_D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750mW
Derate Above T_A = 55°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.67mW/°C
Operating Ambient Temperature Range, T_opr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C
Storage Temperatur Range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Lead Temperature (During Soldering, 1/16” (1.59mm)from case, 10sec max), T_L . . . . . . . . +265°C