Low Cost, Complete 12-Bit Resolver-to-Digital Converter
The AD2S90 is a complete 12-bit resolution tracking
resolverto-digital converter. No external components are required
to operate the device.
The converter accepts 2 V rms ± 10% input signals in the range
3 kHz–20 kHz on the SIN, COS and REF inputs. A Type II servo loop
is employed to track the inputs and convert the input
SIN and COS information into a digital representation of the input
angle. The bandwidth of the converter is set internally at 1 kHz
within the tolerances of the device. The guaranteed maximum
tracking rate is 500 rps.
Angular position output information is available in two forms,
absolute serial binary and incremental A quad B.
The absolute serial binary output is 12-bit (1 in 4096). The data
output pin is high impedance when Chip Select CS is logic HI.
This allows the connection of multiple converters onto a common
bus. Absolute angular information in serial pure binary form is
accessed by CS followed by the application of an external clock
(SCLK) with a maximum rate of 2 MHz.
The encoder emulation outputs A, B and NM continuously produce
signals equivalent to a 1024 line encoder. When decoded this
corresponds to 12 bits of resolution. Three common north marker
pulsewidths are selected via a single pin (NMC).
An analog velocity output signal provides a representation of
velocity from a rotating resolver shaft traveling in either a
clockwise or counterclockwise direction.
The AD2S90 operates on ±5 V dc ± 5% power supplies and is
fabricated on Analog Devices’ Linear Compatible CMOS process (LC2
MOS is a mixed technology process that combines precision bipolar
circuits with low power CMOS logic circuits.
Complete Monolithic Resolver-to-Digital Converter
Incremental Encoder Emulation (1024-Line)
Absolute Serial Data (12-Bit)
Industrial Temperature Range
Low Power (50 mW)
Industrial Motor Control
Servo Motor Control
Automotive Motion Sensing and Control
Integrated Circuits (ICs)
Data Acquisition - ADCs/DACs - Special Purpose
Sampling Rate (Per Second)
Voltage Supply Source
Voltage - Supply
±4.75 V ~ 5.25 V
-40°C ~ 85°C
Package / Case
Supplier Device Package
Warranty :180days for all goods
Free shipping:Order over $600 win a free shipment fee:goods weight
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