date 08/05/2022

page 1 of 10

SERIES: AMT20 | DESCRIPTION: MODULAR ABSOLUTE ENCODER

cuidevices.com

ELECTRICAL

parameter

conditions/description

min

typ

max

units

power supply

VDD

4.5

5

5.5

V

start-up time1

200

ms

current consumption

with unloaded output

8

10

mA

output high level

VDD-0.8

V

output low level

0.4

V

output current

CMOS sink/source per channel

2

mA

rise/fall time

30

ns

Note:

1. Encoder must be stationary during start-up.

INCREMENTAL CHARACTERISTICS

parameter

conditions/description

min

typ

max

units

channels

quadrature A, B, and Z index

waveform

CMOS voltage square wave

phase difference

A leads B for CCW rotation (viewed from front)

90

degrees

quadrature resolutions2

96, 192, 200, 250, 384, 400, 500, 512, 768, 800, 1000,

1024

PPR

index

one pulse per 360 degree rotation

accuracy

0.2

degrees

quadrature duty cycle

50

%

Notes:

2. Resolution selected via AMT Viewpoint™ PC Software. Default resolution set to 1024 PPR. All resolutions are listed as pre-quadrature, meaning the final number of

counts is PPR x 4.

ABSOLUTE POSITION CHARACTERISTICS

parameter

conditions/description

min

typ

max

units

resolution

12

bits

positions

encoder can be zero-set via SPI or AMT Viewpoint™ PC

Software

accuracy

0.2

degrees

FEATURES

• patented capacitive ASIC technology

• low power consumption

• settings configurable with AMT Viewpoint™ GUI

• digitally set zero position alignment

• 12-bit absolute position via SPI (4096 positions)

• incremental resolutions up to 1024 PPR

• index pulse

• compact modular package with locking hub for ease of installation

• 7 different mounting hole options

• -40~125°C operating temperature

Additional Resources: Product Page | 3D Model