AD2S83
–5–
REV. D
PIN FUNCTION DESCRIPTIONS
P
in
Nos. Mnemonic Description
1 DEMOD O/P Demodulator Output
2 REFERENCE I/P Reference Signal Input
3 AC ERROR O/P Ratio Multiplier Output
4 COS Cosine Input
5 ANALOG GND Power Ground
6 SIGNAL GND Resolver Signal Ground
7 SIN Sine Input
8+V
S
Positive Power Supply
10–25 DB1–DB16 Parallel Output Data
26 +V
L
Logic Power Supply
27 ENABLE Logic HI—Output Data Pins in
High Impedance State
Logic LO—Presents Active Data
to the Output Pins
28 BYTE SELECT Logic HI—Most Significant Byte to
DB1–DB8
Logic LO—Least Significant Byte
to DB1–DB8
30 INHIBIT Logic LO Inhibits Data Transfer
to Output Latches
31 DIGITAL GND Digital Ground
32, 33 SC2–SC1 Select Converter Resolution
34 DATA LOAD Logic LO DB1–DB16 Inputs
Logic HI DB1–DB16 Outputs
35 COMPLEMENT Active Logic LO
36 BUSY Converter Busy, Data not Valid
While Busy HI
37 DIRECTION Logic State Defines Direction of
Input Signal Rotation
38 RIPPLE CLOCK Positive Pulse When Converter Output
Changes from 1s to All 0s or Vice Versa
39 –V
S
Negative Power Supply
40 VCO I/P VCO Input
41 VCO O/P VCO Output
42 INTEGRATOR O/P Integrator Output
43 INTEGRATOR I/P Integrator Input
44 DEMOD I/P Demodulator Input
ABSOLUTE MAXIMUM RATINGS
1
(with respect to GND)
+V
S
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +13 V dc
–V
S
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –13 V dc
+V
L
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +V
S
Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +13 V to –V
S
SIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +13 V to –V
S
COS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +13 V to –V
S
Any Logical Input . . . . . . . . . . . . . . . . . . –0.4 V dc to +V
L
dc
Demodulator Input . . . . . . . . . . . . . . . . . . . . . . . +13 V to –V
S
Integrator Input . . . . . . . . . . . . . . . . . . . . . . . . . . +13 V to –V
S
VCO Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +13 V to –V
S
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . 800 mW
Operating Temperature
Industrial (AP, IP) . . . . . . . . . . . . . . . . . . . –40°C to +85°C
Storage Temperature . . . . . . . . . . . . . . . . . . –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 device
may occur.
2
Correct polarity voltages must be maintained on the +V
S
and –V
S
pins.
RECOMMENDED OPERATING CONDITIONS
Power Supply Voltage (+V
S
, –V
S
) . . . . . . . . . . ±12 V dc ± 5%
Power Supply Voltage V
L
. . . . . . . . . . . . . . . . . +5 V dc ± 10%
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 . . . ±10 Degrees (max)
Ambient Operating Temperature Range
Industrial (AP, IP) . . . . . . . . . . . . . . . . . . . . –40°C to +85°C
PIN CONFIGURATION
9
10
11
12
13
7
8
16
17
14
15
21443
4
5642414043
35
36
37
38
39
33
34
31
32
29
30
–V
S
RIPPLE CLOCK
DIRECTION
BUSY
COMP
DATA LOAD
SC1
DB14
DB11
DB12
DB13
DB15
SIN I/P
+V
S
NC
(MSB) DB1
DB2
DB3
DB4
NC = NO CONNECT
DB5
DB6
DB7
DB8
SC2
DIGITAL GND
INHIBIT
NC
SIGNAL GND
ANALOG GND
COS I/P
AC ERROR O/P
REF I/P
DEMOD O/P
DEMOD I/P
INTEGRATOR I/P
INTEGRATOR O/P
VCO O/P
VCO I/P
18
19
20 21 22 23 24 25
26
27 28
PIN 1
IDENTIFIER
TOP VIEW
(Not to Scale)
AD2S83
(LSB) DB16
+V
L
ENABLE
BYTE SELECT
DB10
DB9
ESD SENSITIVITY
The AD2S83 features an input protection circuit consisting of large “distributed” diodes and
polysilicon series resistors to dissipate both high energy discharge (Human Body Model) and fast, low
energy pulses (Charges Device Model).
Proper ESD protection are strongly recommended to avoid functional damage or performance
degradation. For further information on ESD precautions, refer to Analog Devices ESD Prevention
Manual.
WARNING!
ESD SENSITIVE DEVICE
