Quick Detail:
Low Cost, Complete 12-Bit Resolver-to-Digital Converter
Description:
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 (LC2MOS). LC2
MOS is a mixed technology process that combines precision bipolar circuits with low power CMOS logic circuits.
Applications:
Complete Monolithic Resolver-to-Digital Converter
Incremental Encoder Emulation (1024-Line)
Absolute Serial Data (12-Bit)
Differential Inputs
12-Bit Resolution
Industrial Temperature Range
20-Lead PLCC
Low Power (50 mW)
APPLICATIONS
Industrial Motor Control
Servo Motor Control
Industrial Gauging
Encoder Emulation
Automotive Motion Sensing and Control
Factory Automation
Limit Switching
Specifications:
|
Datasheets |
AD2S90 |
|
Product Photos |
20-PLCC Pkg |
|
Standard Package |
1 |
|
Category |
Integrated Circuits (ICs) |
|
Family |
Data Acquisition - ADCs/DACs - Special Purpose |
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Series |
- |
|
Packaging |
Tube |
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Type |
R/D Converter |
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Resolution (Bits) |
12 b |
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Sampling Rate (Per Second) |
- |
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Data Interface |
Serial |
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Voltage Supply Source |
Dual ± |
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Voltage - Supply |
±4.75 V ~ 5.25 V |
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Operating Temperature |
-40°C ~ 85°C |
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Mounting Type |
Surface Mount |
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Package / Case |
20-LCC (J-Lead) |
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Supplier Device Package |
20-PLCC (9x9) |
Competitive Advantage:
Warranty :180days for all goods
Free shipping:Order over $600 win a free shipment fee:goods weight below 3Kg.
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