SCDX_15 Datasheet, PDF (1/2 Pages) Analog Devices – SOLID STATE CONTROL DIFF TRANSMITTER

SOLID STATECONTROL DIFF TRANSMITTER
GENERAL DESCRIPTION
SPECIFICATION SUMMARY (typical @ +25°C
The SCDX Series are solid state control differential transmitters.
and :t15VDC and +5VDC unless otherwise noted)
Their function is analogous to an electromechanical CDX except
that the mechanical input of the CDX has been replaced by a
binary input angle. The solid state differential transmitter ac-
cepts a digital angle input together with either a 3 wire Synchro
Accuracy!
(max error):
SCDX1623
:t4 arc-minutes
(or 4 wire resolver) angle input and gives as output synchro or
resolver signals representing the difference between the two in-
Input
Resolution:
14 bits
put angles. Thus the outputs can be described by A sin wt sin
- (0 <!» and A sin wt cos (0 - <!»where 0 represents the synchro
or resolver input angle, <!>represents the binary input angle (14
bits) and wt is the synchro excitation frequency.
Synchro
Inputs:
Reference:
See Table I
Transformer isolated
Not required
The outputs from the SCDX resemble in their function the out-
puts from a conventional resolver but they are not transformer
Output
Voltages:
5V rms into 2k ohms min
(not transformer isolated)
isolated. The outputs are from a pair of operational amplifiers
Output
360°
(5.0 volts rms at maximum) which can be fed into a power amp-
Angle Range:
OBSOLETE lifier and Scott transformer to provide either 3 wire synchro or
4 wire resolver outputs at appropriate voltage levels.
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ORDERING GUIDE
1. Specify the basic model number per the following table.
60Hz versions require separ;1te transformers.
Power
Supplies:
+15V @ 45mA
-15V @ 45mA
+5V @ 20mA
Power
Dissipation:
Size:
1.6 Watts
3.125" x 2.625" x 0.8"
Operating
Temperature:
0 to +70°C or
-55°C to +105°C
Weight
7 oz.
NOTES:- .1. Accuracy applies over the operating temp. range plus Table
I parameters
l
\
\
# of Bits
Temp. Range
Freq.
Converter
Transformers
14
0 to +70°C
400Hz
SCDX162351Z
Integral
14
-55°C to +105°C
400Hz
SCDX162361Z
Integral
14
0 to +70°C
60Hz
SCDX1623507
STM163152Z
14
-55°C to +105°C
60Hz
SCDX1623607
STMI63162Z
Notes 2 and 3 of SDC series ordering guide apply
SOLID STATECONTROLTRANSFORMER
GENERAL DESCRIPTION
This SSCT1621 is a solid state control transformer which
DOG"AlINPUT ANGLE"
performs an identical function to an electromechanical con-
trol transformer except that the mechanical input of the
latter has been replaced by a.cligital input. The SSCT1621
accepts a 3 wiresynchro input together with a digital angle
input and outputs the sine of the difference of the two input
angles. The output can be described by A sin wt - sin (0 <!»
where "<!>"represents a 14 bit parallel binary input angle,
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f
"0" represents a 3 wire synchro input angle, and "wt" is the
synchro excitation frequency.
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SchematicDiagram'
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114 CONVERTERS
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