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ITT
TCA430-N
QUAD RC-OSCILLA TOR
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SEMICONDUCTORS
QUAD RC-OSCILLA TOR
The monolithic integrated circuit TCA430-N
contains four RC oscillators in one package
and is designed for use in electronic organs.
Three TCA430-N integrated circuits provide
the twelve master oscillators of the highest
octave. The symmetrical square wave output
signals of the oscillators are suitable for
driving the integrated frequency divider SAJ
110, with which the lower octaves are obtained.
Since the TCA430 is thermally neutral, the
frequency stability of the oscillators is solely
dependent on the temperature coefficients of
the frequency determining RC elements. A
vibrato effect can be generated for all the
oscillators via the vibrato input Pin 4. The
TCA430-N replaces the TCA430, differing in
pin configuration only. Pins 5 and 8 have been
exchanged.
MAXIMUM RATINGS
(All voltages referred to Pin 1)
VB Supply voltage ................ 15V
1" I" IG, I, Output current ............ 7.5mA
V'pp Vibrato voltage, peak-to-peak,
(pin 4 must be driven via
a capacitor) ................. 6V
Tamb Ambient temperature
range .......... -10 to +60°C
Ts Storage temperature
range ............ -30 to 125°C
RECOMMENDED OPERATING CONDITIONS
Supply voltage .......... 12(>9)V
RL, to RIA Load resistors .......... 3.3(>2)kfl
R, to R, Frequency-determining resistors
(Metal film resistors
with a temp. coefficient
::(50 X 10 "jOC) ....... 5 to 50 kfl
C, to C, Frequency-determining
capacitors (MKC polycarbonate
foil capacitors) ...... ::(1 F
fo Oscillator frequency .. 20 to 30,000Hz
CHARACTERISTICS
at VB =12V, RL1 to RL,=3.3 kfl, Tamb =25°C
Current consumption ........ 22mA
Output voltage at low state ..