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AD2S90 - Analog Devices - Low Cost, Complete 12-Bit Resolver-to-Digital Converter

Categories Integrated Circuit Chip
Place of Origin: PHILIPPINE
Brand Name: Analog Devices
Certification: Lead free / RoHS Compliant
Model Number: AD2S90
MOQ: 50
Price: Contact for Sample
Packaging Details: Contact for Sample
Delivery Time: Within 3days
Payment Terms: T/T in advance, Paypal, Western Union
Supply Ability: 5000
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AD2S90 - Analog Devices - Low Cost, Complete 12-Bit Resolver-to-Digital Converter

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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). 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)

Differential Inputs

12-Bit Resolution

Industrial Temperature Range

20-Lead PLCC

Low Power (50 mW)


Industrial Motor Control

Servo Motor Control

Industrial Gauging

Encoder Emulation

Automotive Motion Sensing and Control

Factory Automation

Limit Switching




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)

Competitive Advantage:

Warranty :180days for all goods

Free shipping:Order over $600 win a free shipment fee:goods weight below 3Kg.

Mega Source Electronics stocks components ready to ship. Hard to find, obsolete and highly allocated integrated circuits and semiconductors are all can be found by us.

Mega Source Electronics has established a well-developed logistics system and global logistics network, which can guarantee our service very quick, convenient and efficient.

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