AD2S90APZ Part Information

Details for AD2S90APZ by Analog Devices

Semiconductors - ICs>Data & Signal Conversion>Analog-to-Digital Converters - ADC

Part Description

The AD2S90 is a complete 12-bit resolution tracking resolver- to-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 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 data output 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 binary form 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 continuously produce signals equivalent to a 1024 line encoder. When de- coded 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 clock- wise or counterclockwise direction. The AD2S90 operates on ±5 V dc ± 5% power supplies and is fabricated on Analog Devices’ Linear Compatible CMOS pro- cess (LC2 MOS). LC2 MOS is a mixed technology process that combines precision bipolar circuits with low power CMOS logic circuits.

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Part Features

  • 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)

Part Specifications

Resolution (Bits) 12bit
Sampling Rate -
Input Channel Type Differential
Data Interface Serial
Supply Voltage Type Dual (+/-)
Supply Voltage Min -4.75V
Supply Voltage Max 5.25V
ADC / DAC Case Style LCC
No. of Pins 20Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (07-Jul-2017)
Base Number 2
IC Case Style PLCC
Operating Temperature Range -40°C to +85°C
Supply Current 10mA
Supply Voltage Range ± 4.75V to ± 5.25V
Supply Voltage Range - Analogue ± 4.75V to ± 5.25V
Termination Type Surface Mount Device
RoHS Compliant

Alternative Part Descriptions

  • R/D converter IC [Analog Devices] AD2S90APZ R/D converter IC | Distrelec
  • CONVERTER - ADC | Richardson RFPD

Frequently Asked Questions

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What category does AD2S90APZ fall under?

The AD2S90APZ is listed under Semiconductors - ICs > Data & Signal Conversion > Analog-to-Digital Converters - ADC.

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You can view similar parts to AD2S90APZ when available in the Analog-to-Digital Converters - ADC range under the specifications section at the bottom of the details page.

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Is the AD2S90APZ RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Farnell.

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Authorised distributors including Distrelec and Richardson RFPD have stock available or on a lead time for AD2S90APZ.

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