Datasheet > AD2S90APZ

AD2S90APZ

更新时间： 2024-09-23 12:52:39

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
12页	170K
描述
Low Cost, Complete 12-Bit Resolver-to-Digital Converter

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数据手册
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AD2S90APZ 数据手册

Low Cost, Complete 12-Bit

Resolver-to-Digital Converter

AD2S90

FUNCTIONAL BLOCK DIAGRAM

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

REF

SIN

SIN (␪ – ␾)

VEL

P.S.D. AND

FREQUENCY

SHAPING

SIN LO

HIGH ACCURACY

SIN COS

ANGLE

␪

COS

MULTIPLIER

ERROR

AMPLIFIER

COS LO

DIGITAL

ANGLE ␾

CLKOUT

DIR

U/D

NMC

HIGH

DYNAMIC

RANGE V.C.O.

UP-DOWN

COUNTER

CLK

Low Power (50 mW)

DECODE

LOGIC

APPLICATIONS

LATCH

Industrial Motor Control

Servo Motor Control

Industrial Gauging

SCLK

DATA

SERIAL INTERFACE

Encoder Emulation

Automotive Motion Sensing and Control

Factory Automation

Limit Switching

GENERAL DESCRIPTION

The AD2S90 operates on ±5 V dc ± 5% power supplies and is

fabricated on Analog Devices’ Linear Compatible CMOS pro-

cess (LC²MOS). LC²MOS is a mixed technology process that

combines precision bipolar circuits with low power CMOS logic

circuits.

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.

PRODUCT HIGHLIGHTS

Complete Resolver-Digital Interface. The AD2S90 provides

the complete solution for digitizing resolver signals (12-bit reso-

lution) without the need for external components.

Dual Format Position Data. Incremental encoder emulation

in standard A QUAD B format with selectable North Marker

width. Absolute serial 12-bit angular binary position data

accessed via simple 3-wire interface.

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.

Single High Accuracy Grade in Low Cost Package. ±10.6 arc

minutes of angular accuracy available in a 20-lead PLCC.

Low Power. Typically 50 mW power consumption.

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.

REV. D

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

World Wide Web Site: http://www.analog.com

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中文翻译

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AD2S90APZ 替代型号

型号	品牌	替代类型	描述	数据表
AD2S90AP	ADI	类似代替	Low Cost, Complete 12-Bit Resolver-to-Digital Converter
LTC1290CCSW#PBF	Linear	功能相似	LTC1290 - Single Chip 12-Bit Data Acquisition System; Package: SO; Pins: 20; Temperature R

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