Datasheet > AS5145-HSSU

AS5145-HSSU

更新时间： 2024-10-01 06:37:51

品牌	Logo	应用领域
艾迈斯 - AMSCO		编码器
页数	文件大小	规格书
36页	1082K
描述
12-Bit Programmable Magnetic Rotary Encoder

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AS5145-HSSU 数据手册

Data Sheet

AS5145/AS5145A/AS5145B

12-Bit Programmable Magnetic Rotary Encoder

ꢀ

Three incremental outputs

1 General Description

The AS5145 is a contact less magnetic rotary encoder for accurate

angular measurement over a full turn of 360 degrees.

Quadrature A/B (10 or 12 bit) and Index output signal (pre-

programmed versions available AS5145A for 10 bit and

AS5145B for 12 bit)

It is a system-on-chip, combining integrated Hall elements, analog

front end and digital signal processing in a single device.

ꢀ

User programmable zero position

Failure detection mode for magnet placement, monitoring, and

loss of power supply

To measure the angle, only a simple two-pole magnet, rotating over

the center of the chip, is required. The magnet may be placed above

or below the IC.

ꢀ

Red-Yellow-Green indicators display placement of magnet in Z-

axis

The absolute angle measurement provides instant indication of the

magnet’s angular position with a resolution of 0.0879º = 4096

positions per revolution. This digital data is available as a serial bit

stream and as a PWM signal.

Serial read-out of multiple interconnected AS5145 devices

using Daisy Chain mode

ꢀ

Tolerant to magnet misalignment and gap variations

Wide temperature range: - 40ºC to +150ºC

An internal voltage regulator allows the AS5145 to operate at either

3.3V or 5V supplies.

Fully automotive qualified to AEC-Q100, grade 0

Small Pb-free package: SSOP 16 (5.3mm x 6.2mm)

2 Key Features

3 Applications

ꢀ

Contact less high resolution rotational position encoding over a

full turn of 360 degrees

The device is ideal for industrial applications like contactless rotary

position sensing and robotics; automotive applications like steering

wheel position sensing, transmission gearbox encoder, head light

position control, torque sensing, valve position sensing and

replacement of high end potentiometers.

ꢀ

Two digital 12 bit absolute outputs:

- Serial interface

- Pulse width modulated (PWM) output

Figure 1. AS5145 Automotive Rotary Encoder IC

VDD3V3

MagINCn

MagDECn

VDD5V

LDO 3.3V

PWM

Interface

Ang

Sin

Absolute

Interface

(SSI)

DSP

Cos

Hall Array

Front end

Amplifier

Mag

CSn

CLK

OTP

PDIO

DTEST1_A

Incremental

Interface

Mux

AS5145

DTEST2_B

Mode_Index

www.austriamicrosystems.com/AS5145

Revision 1.10

1 - 36

12 3 4 5 6 7...36

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