NTE1608
Integrated Circuit
AM Tuner
w
/Electronic Tuning
Description:
The NTE1608 is a high performance integrated circuit in a 20鈥揕ead DIP type package to be used as
an AM electronic tuner. It provides an automatic search鈥搒top signal, local oscillator buffer鈥搊utput,
and the low level local oscillation, as well as providing all other functions required of an AM tuner.
Moreover, the stable local oscillation from LW to SW facilities the use of many bands.
Functions:
D
RF Amplifier
D
IF Amplifier
D
MIX
D
AGC
D
OSC (with ALC)
D
Detection
D
Local Oscillation Buffer鈥揙utput
D
Signal Meter Driving Output (also used as an Automatic Search Stop鈥揝ignal).
Features:
D
Narrow鈥揃and Signal Meter:
Available as an automatic search鈥搒top signal (also available as
a wide鈥揵and signal meter). Signal meter output = 1/2 frequency
鹵
1.5kHz typ.
D
Local Oscillation Buffer鈥揙utput::
Facilitates the design of electronic tuning systems and
frequency representation.
D
OSC (with ALC):
The oscillation output has been stabilized at a low level (350mV
rms
) for a
varactor diode, and tracking error has been minimized.
D
RF Amplifier:
Excellent in usable sensitivity by incorporating low鈥搉oise transistors in cascode circuit
(45dB/m typ)
D
MIX:
Double balanced differential MIX prevents the influence of spurious radiation and IF
interferences (IF interference = 85dB typ)
D
Low Noise:
Excellent in S/N for intermediate input (57dB typ).
D
Compensation for V
CC
Fluctuation:
Allows little gain fluctuation and little distortion fluctuation
(8 to 16V).
D
Low Shock Noise:
Able to decrease the shock noise by selecting AGC time constant when
changing V
CC
鈥搊n and/or switching the mode.
1
2
3
