Datasheet > ADW71205YSTZ

ADW71205YSTZ

更新时间： 2024-11-11 12:26:43

品牌	Logo	应用领域
亚德诺 - ADI		振荡器
页数	文件大小	规格书
20页	327K
描述
12-Bit RDC with Reference Oscillator

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ADW71205YSTZ 数据手册

12-Bit RDC

with Reference Oscillator

AD2S1205

FUNCTIONAL BLOCK DIAGRAM

FEATURES

CRYSTAL

REFERENCE

Complete monolithic resolver-to-digital converter (RDC)

Parallel and serial 12-bit data ports

System fault detection

PINS

AD2S1205

INTERNAL

CLOCK

GENERATOR

REFERENCE

OSCILLATOR

(DAC)

VOLTAGE

REFERENCE

EXCITATION

OUTPUTS

11 arc minutes of accuracy

Input signal range: 3.15 V p-p 27ꢀ

Absolute position and velocity outputs

1250 rps maximum tracking rate, 12-bit resolution

Incremental encoder emulation (1024 pulses/rev)

Programmable sinusoidal oscillator on board

Single-supply operation (5.00 V 5ꢀ)

−40°C to +125°C temperature rating

44-lead LQFP

SYNTHETIC

REFERENCE

INPUTS

FROM

FAULT

DETECTION

OUTPUTS

ADC

FAULT

TYPE II TRACKING LOOP

POSITION REGISTER

DETECTION

RESOLVER

VELOCITY REGISTER

ENCODER

EMULATION

OUTPUTS

ENCODER

EMULATION

MULTIPLEXER

4 kV ESD protection

Qualified for automotive applications

DATA BUS OUTPUT

APPLICATIONS

DATA I/O

RESET

Automotive motion sensing and control

Hybrid-electric vehicles

Figure 1.

Electric power steering

Integrated starter generator/alternator

Industrial motor control

Process control

GENERAL DESCRIPTION

PRODUCT HIGHLIGHTS

The AD2S1205 is a complete 12-bit resolution tracking

resolver-to-digital converter that contains an on-board

programmable sinusoidal oscillator providing sine wave

excitation for resolvers.

1. Ratiometric Tracking Conversion. The Type II tracking

loop provides continuous output position data without

conversion delay. It also provides noise immunity and

tolerance of harmonic distortion on the reference and

input signals.

The converter accepts 3.15 V p-p 2ꢀ7 input signals on the Sin

and Cos inputs. A Type II tracking loop is employed to track the

inputs and convert the input Sin and Cos information into a digital

representation of the input angle and velocity. The maximum

tracking rate is a function of the external clock frequency. The

performance of the AD2S105 is specified across a frequency

range of 8.192 MHz 257, allowing a maximum tracking rate

of 1250 rps.

2. System Fault Detection. A fault detection circuit can sense

loss of resolver signals, out-of-range input signals, input

signal mismatch, or loss of position tracking.

3. Input Signal Range. The Sin and Cos inputs can accept

differential input voltages of 3.15 V p-p 2ꢀ7.

4. Programmable Excitation Frequency. Excitation frequency

is easily programmable to 10 kHz, 12 kHz, 15 kHz, or 20 kHz

by using the frequency select pins (the FS1 and FS2 pins).

5. Triple Format Position Data. Absolute 12-bit angular position

data is accessed via either a 12-bit parallel port or a 3-wire

serial interface. Incremental encoder emulation is in standard

A-quad-B format with direction output available.

6. Digital Velocity Output. 12-bit signed digital velocity accessed

via either a 12-bit parallel port or a 3-wire serial interface.

Rev. A

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 registeredtrademarks arethe 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

12 3 4 5 6 7...20

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ADW71205YSTZ 替代型号

型号	品牌	替代类型	描述	数据表
AD2S1205YSTZ	ADI	类似代替	12-Bit R/D Converter with Reference Oscillator

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