ad2s34 Analog Devices, Inc., ad2s34 Datasheet - Page 8

• Manufacturer Part Number: ad2s34
• Description: 14-bit,dualchanne Resolver -to-digitalconverte
• Manufacturer: Analog Devices, Inc.

calculated in accordance with MIL-HDBK-217E.
Figure 10 shows the MTBF il1 years vs. case temperature for
Naval Sheltered and Airborne Uninhabited Attack conditions
The numerator and denominator must have consistent angular
may be specified in degrees/see] and the error in outpUt angle in
degrees. Alternatively, the angular unit of measure may be in
ACCELERATION ERROR
A tracking converter employing a Type 2 servo loop does not
suffer any vel()city lag, however, there is an additional error due
to acceleration.
This additional error can be defined using the acceleration con-
stant KA of the converter.
units. For example, if KA is in see-2, then the input acceleration
radians, minutes of arc, LSBs, etc.
acceleration. The maximum acceleration for which the AD2S34
aboUt 730 revolutions/sec] for the 400 Hz option.
acceleration. For example, for an acceleration of 50
AD2S34
K" does not define maximum acceleration, only the error due [0
wilJ not lose track is of the order of 5° x KA = 265000 o/sec2or
K" can be used to predict the outpUt position error due to input
revolutions/see] with K" = 53000,
RELIABILITY
The reliability of these products is very high due to the exten-
environmental conditions are available on request.
sive use of custom chip circuits that decrease the active compo-
nent count. Calculations of the MTBF figure under various
5
~ 1000
'"
z
C(
'"
~
.. 1200
;
0
ANALOGDEVICES fAX-ON-DEMAND HOTLINE
I
1400
1600
8OC)
200
600
400
0
0
Error m
Figure 10. AD2S34 MTBF vs. Temperature
~
50 [rev/seel] . 2~J~::?,B/rev]
.
20
'
NAVAlSHELT£RED
LSB
K\
,
"5-3000'T~ec-2]
s =
=
40
Error in Output Angle
Input Acceleration [LSB/secz]
input Acceleration
TEMPERATURE
60
-r
KA [sec--]
AIRBORNE
80
-
=
'C
-
15.5 LSBs
,------
UNINHABITED
Page
100
11
120
ATTACK
140
-8-
The AD2S46 is a highly integrated hybrid resolver/synchro-ro-
digital converter packaged in a 28-pin DIP. The part offers the
AU devices have user selectable dynamics. The AD2S80A is
available in 40-pin DIP, 44-pin LCC and is qualified to MIL-
and the AD2S81A in a 28-pin DIP.
user 1.3 arc minutes of accuracy over the full military tempera-
tUre range.
The 1740/41/42 are hybrid resolver/synchro-to-digital converters
which incorporate pico transformer isolated input signal
conditioning.
OTHER PRODUCTS
The AD2S44 is a low cost dual channel synchro or resolver
converter with independent reference inputs and a built in
lest featUre. The AD2S44 contains all the necessary front end
electronics to interface directly to popular synchro and resolver
options.
The AD2S80A/AD2S81A1AD2S82A are monolithic resolver-to-
digital converters. The AD2S80A/AD2S82A offer selectable
STD-883B, Rev C. The 2S82A is available in a 44-pin PLCC,
10-16 bits of resolution. The AD2S8lA has 12-bir resolUtion.
PIN ONE COLORED
GLASS BEAD
0.080 12_0321
-J~
MIN FLAT
Dimensions shown in inches and (nun).
OUTLINE DIMENSIONS
t+-
0_030 MIN FLAT
----
0.025 10.83S}
(34.544 '" 0.2S4'
10_7501 TYP
1-]6 " 0.010
TOP VIEW
=l
11
=D--
0.010
{0_25'
32
"
-i --L.
"
0-002
0.051
j
~
'-,
{4-572
10-381
0_080 '" 0_010
~
0_015
I
10_155!39]7}
, =
0.050
{MAX WITH lIDI
AT 0.050 11211 CENTRES
15 EQUAL SPACES
TYP
01501'.OS}NAE
'"
'"
"
11_21}
0-003
0_0151
0_2541
REV.
A
0
0->
CD
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