HEDS-8933 Avago Technologies US Inc., HEDS-8933 Datasheet

HEDS-8933

Manufacturer Part Number

HEDS-8933

Description

TOOL ALIGNMENT AEAS-7000 SERIES

Manufacturer

Avago Technologies US Inc.

Datasheet

1.HEDS-8933.pdf (8 pages)

Specifications of HEDS-8933

Accessory Type

Mechanical Alignment Tool

Product

Tools & Accessories

Size / Dimension

8 mm

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

For Use With/related Products

AEAS-7000 Series

For Use With

516-2181 - IC ENCODER ABS 16BIT SERIALAEAS-7000-1GSD0 - IC ENCODER ABS 13BIT SERIAL 85C

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

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Download datasheet (143Kb)

AEAS-7000

Ultra-precision 16 bit Gray Code

Absolute Encoder Module

Data Sheet

Description

The encoder IC consists of 13 signal photo diode

channels and 1 monitor photo diode channel and is

used for the optical reading of rotary carriers (i.e., discs).

The photodiodes are accompanied with precision

amplifiers plus additional circuitry.

The monitor channel is used to drive a constant current

source for the highly collimated IR illumination system.

Functional Description

Background

The 13 signal channels are set up as:

1. Two precision defining signals (A0, A09), which are

2. 11 analog (A1-A11) channels which are directly

An internal correction and synchronization module

allows the composition of a true 16 bit Gray code by

merging the data bits of (1) and (2) by still keeping the

code monotonic.

There is a Gray code correction feature for this encoder.

This Gray code correction can be disabled/enabled by

the pin KORR.

The gain and offset conditioning value of the sine and

cosine signals are preloaded on-chip by factory. This

will compensate for mechanical sensor misalignment

error.

two 90° electrical shifted sine, cosine signals. These

signals are conditioned to be compensated for offset

and gain errors. After conditioning they are on chip

interpolated

digitized by precision comparators with hysterisis

tracking. The digitized signals are called D1-D11.

Features

• Minimum mechanical alignment during installation

• Two Sine/Cosine true differential outputs with 1024

• Integrated highly collimated illumination system

• 11 digital tracks plus 2 sin/cos tracks generate

• Ultra fast, 1 µs cycle for serial data output word

• On-chip interpolation and code correction

• MSB can be inverted for changing the counting

• Internally built-in monitor track for tracking the light

• Watch dog with alarm output

• –25°C to +85°C operating temperature

Applications

• Rotary application up to 16 bit/360° absolute

• Linear positioning system

• Cost effective solution for direct integration into

periods for unit alignment

precise 16 bit Gray code

equals 16 MHz

direction

level of the LED.

position

OEM systems

Related parts for HEDS-8933

HEDS-8933 Summary of contents

Page 1

AEAS-7000 Ultra-precision 16 bit Gray Code Absolute Encoder Module Data Sheet Description The encoder IC consists of 13 signal photo diode channels and 1 monitor photo diode channel and is used for the optical reading of rotary carriers (i.e., discs). ...

Page 2

Signal-Channels A1-A11 The photocurrent of the photo diodes is fed into a trans-impedance amplifier. The analog output of the amplifier has a voltage swing of (dark/light) about 1.3 V. Every output is transformed by precision comparators into digital signals (D1-D11). ...

Page 3

Package Dimensions 10 Radial + ∅42.1 ∅8.0 H6 2x11 -1.27mm pitch header Notes: 1. 3rd Angle Projection 2. Dimensions are in millimeters 3. Unless otherwise specified, the tolerances are: XX. – ±0.3; XX.X – ±0.1; XX.XX – ±0.03 4. Codewheel ...

Page 4

Absolute Maximum Ratings Parameter DC Supply Voltage Input Voltage Output Voltage Relative Air Humidity (non-condensing) Operating Temperature Storage Temperature Notes: 1. Stresses greater than those listed under Absolute Maximum Ratings may cause permanent damage to the device. This ...

Page 5

Pin Description No. Pin Name Description KORR Digital-input 3 PROBE_ON Digital-Input 4 PCL Digital Input Positive edge 5 STCAL Digital Input Positive edge Negative edge 6 MSBINV Digital-Input 7 DIN Digital Input 8 NSL Digital-Input 9 SCL ...

Page 6

NSL SCL DOUT (SERIAL) Figure 3. Timing Diagram A09P_APR A09N_AREF A0P_A0 A0N_MON VDDA VDD 10R GND min 100µ Tantal LEDR LERR PROBE_ON Figure 4. Schematic for using AEAS-7000 Using the AEAS-7000 IMPORTANT NOTE: The RC-filter combination, especially on VDDA, is ...

Page 7

Operation 1. After powering up the unit using V connecting GND to ground, trigger input pins NSL and SCL using the timing diagram (Figure 3). NSL is a control pin for the internal shift register. NSL=1 is load mode while ...

Page 8

... Ordering Information AEAS-7000-1GSD0 Single-turn, -25 to +85°C, detached encoder set, 5V, serial, 13 bit AEAS-7000-1GSG0 Single-turn, -25 to +85°C, detached encoder set, 5V, serial, 16 bit HEDS-8933 Mechanical Alignment Tool for AEAS-7000 Note: For alignment process, please refer to Avago Technologies website (www.avagotech.com) for application note or contact factory. ...

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