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STV5712 Datasheet(PDF) 2 Page - STMicroelectronics

Part No. STV5712
Description  ADVANCED FM AUDIO PLAY-BACK AND RECORD AMPLIFIER FOR VCR
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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STV5712 Datasheet(HTML) 2 Page - STMicroelectronics

   
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BLOCK DIAGRAM
FUNCTIONAL DESCRIPTION
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC
Power Supply Voltage
6
V
TJ
Junction Temperature
+ 150
oC
THERMAL DATA
Symbol
Parameter
Value
Unit
Rth (j-a)
Junction-ambient Thermal Resistance
Typ.
100
oC/W
STV5712 is intended for 2 heads FM audio VCR
applications.
High performance technologyallows very low noise
levels (current and voltage). In play-back mode a
special feature suppresses the DC offset when
switching two channels. Optimized play-back out-
put stage gives to the STV5712 large capability to
directly drive a coaxial cable in order to reduce
number of external components.
Only one power supply is necessary for play-back
and record modes. The mode can be chosen
through a logic input. Aspecial care has been taken
to avoid current peaks through the rotary trans-
formers.
During play-back mode, record output is grounded
via an internal transistor and during record mode
preamplifiers are turned off.
There is one output current for the two heads, the
DC current and the AC characteristics can be very
precisely controled with accurate external resis-
tors. If recommended resistances are used, a
±5%
transconductance accuracy is guaranted.
The recording amplifier includes a protection sys-
tem which protects the IC and the application board
against overheating in case of short circuit on the
recording transconductancecomponents.
STV5712 is fully protected against ESD.
STV5712
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