ITT - Index of

_ ITT ______ 2_W_A_T_T_T_V_S_O ....
SEMICONDUCTORS
2 WATT TV
SOUND SYSTEM
ITT3701
U_N....,D=S""""Y""""S"""'T ..... EM ....
• Monolithic 2 watt sound channel
• Minimum external components
• 24 volt operation
.Short circuit protection
• Low thermal resistance power package
The ITT3701 is a monolithic integrated circuit
which uses a minimum of external components
to provide the complete sound function of a TV
receiver. Current designs require either two
integrated circuits or one integrated circuit and
a discrete power transistor to perform the
functions incorporated in the ITT3701. The
functional block diagram and the required
external components are shown in Fig.:3.
The integrated circuit includes: a high gain
limiter - IF amplifier, a quadrature type FM
detector, a DC operated volume contrpl, and an
internally compensated 2 watt audio amplifier.
The ITT3701 is supplied in a modified 14 lead
dual in line package with an integral heat sink
bracket. (See figure 2.) The device will operate
satisfactorily at an ambient temperature of 60°
C with worst case program material when the
device leads and heat sink bracket are soldered
into a suitably designed printed circuit board.
For more severe operating conditions, tapped
holes are provided to permit easy addition of
extra radiators.
The ITT3701 will also be supplied without the
healtl sink bracket for those applications
requiring a different heat sink configuration.
Figure 1 shows the 3701 without the bracket
and illustrates the tinned mounting surface
available for heat sink attachment. (Note 3).
Fig. 1- 14-Lead Plastic Dual-In-Line
LEADS TO BE TIN PLATED
; .200
020 MI", MAX .
. 15:TYp.Ll, I .......
11
.310
.290
Jl~~.='
I ' .375 'I
NOM.
Fig. 2- 14-Lead Plastic Package
With Heat Sink Bracket
14
:,:: 1
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:' \
8
.4It.01
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Maximum Ratings:
Supply Voltage
Supply Current
Output Current
V9
I"
I,
28 volts
50 ma
750ma
8-50