Integrated Circuit Chip AD2S90AP Low Cost, Complete 12-Bit Resolver-to-Digital Converter

Integrated Circuit Chip AD2S90AP Low Cost, Complete 12-Bit Resolver-to-Digital Converter



Detailed Product Description

Quick Detail:
Low Cost, Complete 12-Bit Resolver-to-Digital Converter


The AD2S90 is a complete 12-bit resolution tracking resolver-to-digital converter. No external components are required tooperate the device.The converter accepts 2 V rms ± 10% input signals in the range3 kHz–20 kHz on the SIN, COS and REF inputs. A Type IIservo loop is employed to track the inputs and convert the inputSIN and COS information into a digital representation of theinput angle. The bandwidth of the converter is set internally at1 kHz within the tolerances of the device. The guaranteed maxi-mum 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 dataoutput pin is high impedance when Chip Select CS is logic HI.This allows the connection of multiple converters onto a com-mon bus. Absolute angular information in serial pure binaryform is accessed by CS followed by the application of an exter-nal clock (SCLK) with a maximum rate of 2 MHz.The encoder emulation outputs A, B and NM continuouslyproduce signals equivalent to a 1024 line encoder. When de-coded this corresponds to 12 bits of resolution. Three commonnorth marker pulsewidths are selected via a single pin (NMC).An analog velocity output signal provides a representation ofvelocity from a rotating resolver shaft traveling in either a clock-wise or counterclockwise direction.The AD2S90 operates on ±5 V dc ± 5% power supplies and isfabricated on Analog Devices’ Linear Compatible CMOS pro-cess (LC2MOS). LC2MOS is a mixed technology process thatcombines precision bipolar circuits with low power CMOS logiccircuits.


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)




Product Photos

20-PLCC Pkg

Standard Package



Integrated Circuits (ICs)


Data Acquisition - ADCs/DACs - Special Purpose






R/D Converter

Resolution (Bits)

12 b

Sampling Rate (Per Second)


Data Interface


Voltage Supply Source

Dual ±

Voltage - Supply

±4.75 V ~ 5.25 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

20-LCC (J-Lead)

Supplier Device Package

20-PLCC (9x9)

Dynamic Catalog

Resolver to Digital Converter

Competitive Advantage:

Warranty :180days for all goods
Free shipping:Order over $600 win a free shipment fee:goods weight below 3Kg.
SIERRA SUPERIOR ELECTRON LTD Electronics stocks components ready to ship. Hard to find, obsolete and highly allocated integrated circuits and semiconductors are all can be found by us.
SIERRA SUPERIOR ELECTRON LTD Electronics has established a well-developed logistics system and global logistics network, which can guarantee our service very quick, convenient and efficient.


AD2S90AP AD2S90APZ AD2S90APZ-REEL Low Cost, Complete 12-Bit Resolver-to-Digital Converter

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