AD2S82 AD [Analog Devices], AD2S82 Datasheet - Page 5

• Manufacturer Part Number: AD2S82
• Description: Variable Resolution, Monolithic Resolver-to-Digital Converters
• Manufacturer: AD [Analog Devices]

REV. B
RECOMMENDED OPERATING CONDITIONS
Power Supply Voltage (+V
Power Supply Voltage V
Analog Input Voltage (SIN and COS) . . . . . . . . 2 V rms 10%
Analog Input Voltage (REF) . . . . . . . . . . . . . . 1 V to 8 V peak
Signal and Reference Harmonic Distortion . . . . . . . 10% (max)
Phase Shift Between Signal and Reference .
Ambient Operating Temperature Range
Mnemonic
REFERENCE I/P
DEMOD I/P
AC ERROR O/P
COS I/P
ANALOG GND
SIGNAL GND
SIN I/P
+V
DB1–DB16
+V
ENABLE
BYTE SELECT
INHIBIT
DIGITAL GND
SC1–SC2*
DATA LOAD*
BUSY
DIR
RIPPLE CLK
–V
VCO I/P
INTEGRATOR I/P
INTEGRATOR O/P Integrator Output
DEMOD O/P
COMPLEMENT*
VCO O/P*
*AD2S82A Only.
Binary
Bits (N)
10
11
12
13
14
15
16
17
18
Commercial (JD) . . . . . . . . . . . . . . . . . . . . . . 0 C to +70 C
Industrial (HP, JP, KP, LP) . . . . . . . . . . . . –40 C to +85 C
S
0
1
2
3
4
5
6
7
8
9
S
L
116384
131072
262144
Resolution Degrees
(2
32768
65536
1024
2048
4096
8192
PIN FUNCTION DESCRIPTIONS
N
128
256
512
)
16
32
64
1
2
4
8
Description
Reference Signal Input
Demodulator Input
Ratio Multiplier Output
Cosine Input
Power Ground
Resolver Signal Ground
Sine Input
Positive Power Supply
Parallel Output Data
Logic Power Supply
Logic Hi-Output Data in High Impedance
State Logic Lo Present Data to the Output Latches
Logic Hi-Most Significant Byte to DB1–DB8
Logic Lo-Most Significant Byte to DB1–DB8
Logic Lo Inhibits Data Transfer to Output Latches
Digital Ground
Select Converter Resolution
Logic Lo DB1–DB16 Inputs
Logic Hi DB1–DB16 Outputs
Converter Busy, Data Not Valid While Busy Hi
Logic State Defines Direction of Input Signal Rotation
Positive Pulse when Converter Output Changes from
1s to All 0s or Vice Versa
Negative Power Supply
VCO Input
Integrator Input
Demodulator Output
Active Logic Lo
VCO Output
Bit Weight Table
360.0
180.0
/Bit
L
90.0
45.0
22.5
11.25
5.625
2.8125
1.40625
0.703125
0.3515625
0.1757813
0.0878906
0.0439453
0.0219727
0.0109836
0.0054932
0.0027466
0.0013733
. . . . . . . . . . . . . . . . . . +5 V dc 10%
S
to –V
S
) . . . . . . . . . 12 V dc 10%
21600.0
10800.0
Minutes
/Bit
5400.0
2700.0
1350.0
675.0
337.5
168.75
84.375
42.1875
21.09375
10.546875
5.273438
2.636719
0.164795
0.082397
1.318359
0.659180
0.329590
10 Degrees (max)
1296000.0
Seconds
/Bit
648000.0
324000.0
162000.0
81000.0
40500.0
20250.0
10125.0
5062.5
2531.25
1265.625
632.8125
316.40625
158.20313
79.10156
39.55078
19.77539
9.88770
4.94385
–5–
ABSOLUTE MAXIMUM RATINGS
+V
–V
+V
Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +14 V to –V
SIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +14 V to –V
COS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +14 V to –V
Any Logical Input . . . . . . . . . . . . . . . . . . . –0.4 V dc to +V
Demodulator Input . . . . . . . . . . . . . . . . . . . . . . . +14 V to –V
Integrator Input . . . . . . . . . . . . . . . . . . . . . . . . . . +14 V to –V
VCO Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +14 V to –V
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 860 mW
Operating Temperature
Storage Temperature (All Grades) . . . . . . . . . –65 C to +150 C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . +300 C
CAUTION
1. Absolute Maximum Ratings are those values beyond which damage to the
2. Correct polarity voltages must be maintained on the +V
device may occur.
Commercial (JD) . . . . . . . . . . . . . . . . . . . . . . 0 C to +70 C
Industrial (HP, JP, KP, LP) . . . . . . . . . . . . . –40 C to +85 C
S
S
L
NC = NO CONNECT
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –14 V dc
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +V
MSB DB1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +14 V dc
SIN O/P
AD2S81A/AD2S82A PIN CONFIGURATIONS
DB2
DB3
DB4
DB5
DB6
DB7
DB8
+V
NC
REFERENCE I/P
AC ERROR O/P
S
ANALOG GND
10
11
12
13
14
15
16
17
7
8
9
DEMOD I/P
MSB DB1
COS I/P
SIN I/P
18 19 20 21 22 23 24 25 26 27 28
6
DB2
DB3
DB4
DB5
DB6
DB7
+V
5
S
4
10
11
12
13
14
1
2
3
4
5
6
7
8
9
(Not to Scale)
3
AD2S82A
TOP VIEW
(Not to Scale)
AD2S81A
2
TOP VIEW
AD2S81A/AD2S82A
1 44 43 42 41 40
PIN 1
IDENTIFIER
1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
(with respect to GND)
DEMOD O/P
INTEGRATOR O/P
INTEGRATOR I/P
VCO I/P
–V
RIPPLE CLK
DIR
BUSY
DIGITAL GND
INHIBIT
BYTE SELECT
ENABLE
+V
DB8 LSB
S
L
39
38
37
36
35
34
33
32
31
30
29
S
and –V
–V
RIPPLE CLK
DIR
BUSY
DATA LOAD
COMPLEMENT
SC2
SC1
DIGITAL GND
INHIBIT
NC
S
S
pins.
L
dc
S
S
S
S
S
S
S