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AD2S1205 Datasheet(PDF) 2 Page - Analog Devices

Part No. AD2S1205
Description  12-Bit R/D Converter with Reference Oscillator
Download  25 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com

AD2S1205 Datasheet(HTML) 2 Page - Analog Devices

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Preliminary Technical Data
Rev.PrB | Page 2 of 25
Electric power steering
Electric vehicles
Integrated starter generator/alternator
Encoder emulation
Automotive motion sensing and control
Complete Resolver-to-Digital Interface:
The AD2S1205
provides the complete solution for digitizing resolver
signals (12-bit resolution) with on-board programmable
sinusoidal oscillator.
Ratiometric Tracking Conversion:
This technique
provides continuous output position data without
conversion delay. It also provides noise immunity and
tolerance of harmonic distortion on the reference and
input signals.
Triple Format Position Data:
Absolute 12-bit angular
binary position data accessed either via a 12-bit parallel
port or via a 3-wire serial interface. Incremental encoder
emulation in standard A QUAD B format, with direction
output is available.
Digital Velocity Output:
12-bit signed digital velocity,
twos complement format, accessed either via a 12-bit
parallel port or via a 3-wire serial interface.
Programmable Excitation Frequency:
Excitation fre-
quency easily programmable to 10 kHz, 12 kHz, 15 kHz, or
20 kHz by using the frequency select pins.
System Fault Detection:
A fault detection circuit will
detect any loss of resolver signals, out of range input
signals, input signal mismatch, or loss of position tracking.

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