AD2S44-UM18B

更新时间： 2024-11-07 12:33:15

品牌	Logo	应用领域
亚德诺 - ADI		转换器位置转换器输入元件
页数	文件大小	规格书
12页	310K
描述
Low Cost, 14-Bit, Dual Channel Synchro/Resolver-to-Digital Converter

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数据手册

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AD2S44-UM18B 数据手册

Low Cost, 14-Bit, Dual Channel

Synchro/Resolver-to-Digital Converter

Data Sheet

AD2S44

The core of each conversion is performed by state-of-the-art mono-

lithic, integrated circuits manufactured by the Analog Devices, Inc.,

proprietary BiMOS II process, which combines the advantages of

low power CMOS digital logic with bipolar linear circuits. The

use of these ICs keeps the internal component count low and

ensures high reliability.

FEATURES

Low per-channel cost

32-lead DIL hybrid package

2.6 arc minute accuracy

14-bit resolution

Built-in test

Independent reference inputs

High tracking rate

BIT

The built-in test (

) facility can be used in failsafe systems to

provide an indication of whether the converter is tracking

accurately.

APPLICATIONS

Gimbal/gyro control systems

Robotics

Engine controllers

Coordinate conversion

Military servo control systems

Fire control systems

Avionic systems

Each channel incorporates a high accuracy differential condi-

tioning circuit for signal inputs providing more than 74 dB of

common-mode rejection. Options are available for both synchro

and resolver format inputs. The converter output is via a three-state

transparent latch allowing data to be read without interruption

of the converter operation. The A/ and

control lines select

the channel and present the digital position to the common

data outputs.

Antenna monitoring

CNC machine tooling

The AD2S44 also features independent reference inputs where

different reference frequencies can be used for each channel.

GENERAL DESCRIPTION

The AD2S44 is a 14-bit dual channel, continuous tracking synchro/

resolver-to-digital converter. It has been designed specifically

for applications where space, weight, and cost are at a premium.

Each 32-lead hybrid device contains two independent Type II servo

loop tracking converters. The ratiometric conversion technique

employed provides excellent noise immunity and tolerance of

long lead lengths.

All components are 100% tested at −55°C, +25°C, and +125°C.

Devices are processed to high reliability screening standards

and receive further levels of testing and screening to ensure

high levels of reliability.

FUNCTIONAL BLOCK DIAGRAM

(A)

REFERENCE

CONDITIONER

S1 (A)

S2 (A)

HIGH

SPEED

SIN/COS

MULTIPLIER

PHASE-

SENSITIVE

DETECTOR

GND

SYNCHRO/

RESOLVER

CONDITIONER

UP-DOWN

COUNTER

ERROR

AMP

INTEGRATOR

VCO

–V

S3 (A)

S4 (A)

BIT

BUILT-IN

TEST

DETECTION

A/B

THREE-

STATE

AD2S44

DB1 (MSB)

OUTPUT

LATCHES

DB14 (LSB)

S1 (B)

S2 (B)

HIGH

SPEED

SIN/COS

MULTIPLIER

SYNCHRO/

RESOLVER

CONDITIONER

PHASE-

SENSITIVE

DETECTOR

UP-DOWN

COUNTER

ERROR

AMP

VCO

INTEGRATOR

S3 (B)

S4 (B)

(B)

REFERENCE

CONDITIONER

Figure 1.

Rev. B

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 that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

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

Tel: 781.329.4700 www.analog.com

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