AD2S80A
REV. B
–16–
APPLICATIONS
Control Transformer
The ratio multiplier of the AD2S80A can be used independently
of the loop integrators as a control transformer. In this mode the
resolver inputs θ are multiplied by a digital angle φ any differ-
ence between φ and θ will be represented by the AC ERROR
output as SIN ωt sin (θ–φ) or the DEMOD output as sin (θ–φ).
To use the AD2S80A in this mode refer to the “Control Trans-
former” application note.
Dynamic Switching
In applications where the user requires wide band response from
the converter, for example 100 rpm to 6000 rpm, superior per-
formance is achieved if the converters control characteristics are
switched dynamically. This reduces velocity offset levels at low
tracking rates. For more information on the technique refer to
“Dynamic Resolution Switching Using the Variable Resolution
Monolithic Resolver-to-Digital Converters.”
OTHER PRODUCTS
The AD2S82A is a monolithic, variable resolution 10-, 12-, 14-
and 16-bit resolver-to-digital converter in a 44-terminal J-leaded
PLCC package. In addition to the AD2S80A functions it has a
VCO OUTPUT which is a measure of position within a LSB,
and a COMPLEMENT Data Output.
The AD2S81A is a low cost, monolithic, 12-bit resolver-to-
digital converter in a 28-lead ceramic DIP package.
PRINTED IN U.S.A.
C00008–2.5–9/00 (rev. B)
ORDERING GUIDE
Operating
Temperature Package Package
Model Range Accuracy Description Option
AD2S80AJD 0°C to 70°C 8 arc min Side Brazed Ceramic DIP D-40
AD2S80AKD 0°C to 70°C 4 arc min Side Brazed Ceramic DIP D-40
AD2S80ALD 0°C to 70°C 2 arc min Side Brazed Ceramic DIP D-40
AD2S80AAD –40°C to +85°C 8 arc min Side Brazed Ceramic DIP D-40
AD2S80ABD –40°C to +85°C 4 arc min Side Brazed Ceramic DIP D-40
AD2S80ASD –55°C to +125°C 8 arc min Side Brazed Ceramic DIP D-40
AD2S80ATD –55°C to +125°C 4 arc min Side Brazed Ceramic DIP D-40
AD2S80AUD –55°C to +125°C 2 arc min Side Brazed Ceramic DIP D-40
AD2S80ASE –55°C to +125°C 8 arc min Leadless Ceramic Chip Carrier E-44A
AD2S80ATE –55°C to +125°C 4 arc min Leadless Ceramic Chip Carrier E-44A
AD2S80AUE –55°C to +125°C 2 arc min Leadless Ceramic Chip Carrier E-44A
AD2S80ASD/883B –55°C to +125°C 8 arc min Side Brazed Ceramic DIP D-40
AD2S80ATD/883B –55°C to +125°C 4 arc min Side Brazed Ceramic DIP D-40
AD2S80ASE/883B –55°C to +125°C 8 arc min Leadless Ceramic Chip Carrier E-44A
AD2S80ATE/883B –55°C to +125°C 4 arc min Leadless Ceramic Chip Carrier E-44A
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
40-Lead Ceramic DIP (D) Package
0.060 (1.52)
0.02 (0.51)
0.125 (3.22)
0.150
(3.81)
MIN
2.02 (51.31)
1.98 (50.29)
0.100 (2.54) TYP
0.61 (15.49)
0.58 (14.73)
0.09 (2.29)
0.07 (1.77)
0.59 (14.99)
TYP
0.012 (0.31)
0.009 (0.23)
0.01 (0.25) TYP
LEAD NO. 1 IDENTIFIED BY DOT OR NOTCH. LEADS ARE GOLD PLATED
(50 MICROINCHES MIN) KOVAR OR ALLOY 42.
44-Terminal LCC (E) Package
1
44
6
7
18
17
39
40
BOTTOM VIEW
29
28
0.055 (1.40)
0.045 (1.14)
0.662 (16.82)
2
0.640 (16.27)
SQ
0.028 (0.71)
0.022 (0.56)
0.020 (0.51)
REF ⴛ 45°
0.040 (1.02)
REF ⴛ 45°
3 PLACES
0.050
(1.27)
BSC
0.075 (1.91) REF
0.100 (2.54)
1
0.064 (1.63)
NOTES
1
THIS DIMENSION CONTROLS THE OVERALL PACKAGE
THICKNESS.
2
APPLIES TO ALL FOUR SIDES.
ALL TERMINALS ARE GOLD PLATED.
