AD2S93BP AD [Analog Devices], AD2S93BP Datasheet - Page 4

• Manufacturer Part Number: AD2S93BP
• Description: Low Cost LVDT-to-Digital Converter
• Manufacturer: AD [Analog Devices]

AD2S93
RECOMMENDED OPERATING CONDITIONS
Power Supply Voltage (V
Analog Input Voltage (A, B) . . . . . . . . . . . . . . 1 V rms
Analog Reference Input (REF) . . . . . . . . . . . . 2 V rms
Signal and Reference Harmonic Distortion . . . . . . . . . . . <10%
Operating Temperature Range
ABSOLUTE MAXIMUM RATINGS*
V
V
AGND to DGND . . . . . . . . . . . . –0.3 V dc to V
Analog Inputs to AGND REF . . . . V
A, B . . . . . . . . . . . . . . . . . . . . . . . . . V
Analog Output to AGND VEL . . . . . . . . . . . . . . . . V
Digital Inputs to DGND
Digital Outputs to DGND
Operating Temperature Range
Lead Temperature (Soldering 10 sec) . . . . . . . . . . . . . +300 C
Power Dissipation to +75 C . . . . . . . . . . . . . . . . . . +100 mW
Derates above +75 C by . . . . . . . . . . . . . . . . . . . . . 10 mW/ C
*
Model
AD2S93AP
AD2S93BP
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD2S93 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
Stresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in the
operational section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
DD
SS
Industrial (AP, BP) . . . . . . . . . . . . . . . . . . . –40 C to +85 C
CS, SCLK . . . . . . . . . . . . . . . . . . . . . –0.3 V to V
NULL, DIR, CLKOUT, DATA . . . . –0.3 V to V
Industrial (A, B) . . . . . . . . . . . . . . . . . . . . . –40 C to +85 C
to AGND . . . . . . . . . . . . . . . . . . . +0.3 V dc to – 7.0 V dc
to AGND . . . . . . . . . . . . . . . . . . . –0.3 V dc to + 7.0 V dc
CLKOUT
DATA
SCLK
UNR
NC
NC
CS
Temperature
Range
–40 C to +85 C
–40 C to +85 C
10
11
5
8
6
7
9
NC = NO CONNECT
ORDERING GUIDE
12
4
DD
13
3
–V
(Not to Scale)
14
AD2S93
2
TOP VIEW
SS
15
) . . . . . . . . . . .
1
28
16
17
27
SS
Linearity
0.1%
0.05%
SS
18
26
– 0.3 V to V
– 0.3 V to V
25
22
20
19
24
23
21
VCOGAIN
REF
VEL
INTIN
ACERROR
DEMODIN
NC
DD
5 V dc
DD
+ 0.3 V dc
DD
DD
DD
SS
Package
Option
P-28A
P-28A
+ 0.3 V
+ 0.3 V
+ 0.3 V
+ 0.3 V
to V
10%
10%
5%
DD
–4–
Pin
No.
1
2
3
4
5
6
7
9, 12
10
13
14
15
16
17
18
19
20
21
22
23
24
27, 28 B, A
Mnemonic
AGND
DIFF
GAIN
LOS
DATA
SCLK
CS
UNR, OVR
CLKOUT
NULL
DIR
DGND
V
V
DEMODOUT Output of the Phase Sensitive
DEMODIN
ACERROR
VCO GAIN
INTIN
VEL
REF
SS
DD
PIN DESIGNATIONS
Description
Analog Ground.
Output of Signal Input Preamplifier.
Connect GAIN Pin to DIFF for
nominal
1 can be resistively scaled.
Do not leave unconnected.
Denotes A or B lines loss of
connection and/or loss of reference
to transducer or converter.
16-bit serial data output 13 bits of
absolute position information plus
overrange and underrange plus LOS.
Serial Clock. Maximum rate = 2 MHz.
Chip Select. Loads serial interface
with current positional information
and enable output.
Two pins that denote whether the
input signals are underrange or
overrange.
Updates every LSB.
Denotes Null Position.
Indicates direction. DIR is HI for
positive displacement and LO for
negative displacement.
Digital Ground.
Negative Power Supply –5.0 V dc
Positive Power Supply +5.0 V dc
Demodulator.
Input to Phase Sensitive
Demodulator.
AC Error Output.
Sets the VCO gain internally.
Connect to VEL for 2400 LSB/s.
Disconnect for 800 LSB/s.
Determines system dynamics connect
C and RC (serial) parallel
combination across INTIN and
VEL to determine loop dynamics.
Analog Velocity Output.
Single ended input for fixed
amplitude reference.
Uncommitted differential inputs
for the A, B signal inputs.
5%.
5%.
WARNING!
1. Gains greater than
ESD SENSITIVE DEVICE
REV. A