HEDT-9100#D00 [AGILENT]

SINGLE, 2 CHANNELS, ROTARY OPTICAL POSITION ENCODER;


型号：	HEDT-9100#D00
厂家：	AGILENT TECHNOLOGIES, LTD.
描述：	SINGLE, 2 CHANNELS, ROTARY OPTICAL POSITION ENCODER 编码器光电
文件：	总7页 (文件大小：291K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

High Temperature 125°C Two

Channel Optical Incremental

Encoder Modules

Technical Data

HEDT-9000

HEDT-9100

Features

Description

The HEDT-9000 and the HEDT-

9100 series are high

• High Performance

• High Resolution

• Low Cost

• Easy to Mount

• No Signal Adjustment

Required

• Insensitive to Radial and

Axial Play

• Small Size

• -40°C to 125°C Operating

Temperature

performance, low cost, optical

incremental encoder modules that

operate to 125°C. When used with

a codewheel, these modules

detect rotary position. The

modules consist of a lensed (LED)

source and a detector IC enclosed

in a small C-shaped plastic pack-

age. Due to a highly collimated

light source and unique

The two channel digital outputs

and the single 5 V supply input

are accessed through five 0.025

inch square pins located on 0.1

inch centers.

photodetector array, these

modules are extremely tolerant to

mounting misalignment.

• Two Channel Quadrature

Output

• TTL Compatible

• Single 5 V Supply

Package Dimensions

26.67 (1.05)

15.2

8.6 (0.34)

(0.60)

0.63 (0.025)

2.54 (0.100) TYP.

SQR. TYP.

OPTION CODE

5.1 (0.20)

1.8

(0.07)

1.52 (0.060)

1.0 (0.04)

2.9

(0.11)

DATE CODE

2.21

(0.087)

6.9 (0.27)

11.9

(0.47)

2.54

(0.100)

3.73 ± 0.05

(0.147 ± 0.002)

20.8

(0.82)

H E D S - 9 X 0 0

1.02 ± 0.10

11.7

(0.46)

(0.040 ± 0.004)

8.81

(0.347)

4.75 ± 0.10

(0.187 ± 0.004)

5.8

(0.23)

45°

OPTICAL

CENTER LINE

2.67 (0.105) DIA.

MOUNTING THRU

HOLE 2 PLACES

ALIGNING RECESS

2.44/2.41 DIA.

ALIGNING RECESS

2.44/2.41 X 2.79

(0.215 ± 0.004) (0.096/0.095 X 0.110)

1.85 (0.073)

1.78 ± 0.10

(0.070 ± 0.004)

5.46 ± 0.10

(0.096/0.095)

2.16 (0.085)

DEEP

ALIGNING RECESS

2.44/2.41 DIA.

(0.096/0.095)

8.64 (0.340)

REF.

2.44/2.41 X 2.79

(0.096/0.095 X 0.110)

2.16 (0.085) DEEP

2.92 ± 0.10

(0.115 ± 0.004)

17.27

(0.680)

2.16 (0.085) DEEP

OPTICAL

CENTER

4.11 (0.162)

10.2

(0.400)

20.96

(0.825)

OPTICAL CENTER

6.35 (0.250) REF.

TYPICAL DIMENSIONS IN

MILLIMETERS AND (INCHES)

SIDE A

SIDE B

ESD WARNING: NORMAL HANDLING PRECAUTIONS SHOULD BE TAKEN TO AVOID STATIC

DISCHARGE.

Standard resolutions for the

HEDT-9000 are 500 CPR and

1000 CPR for use with a HEDS-

6100 codewheel or equivalent.

For the HEDT-9100, standard

resolutions between 96 CPR and

512 CPR are available for use

with a HEDS-5120 codewheel or

equivalent.

Block Diagram

Applications

The HEDT-9000 and 9100

provide sophisticated motion

detection at a low cost, at

temperatures to 125°C, making

them ideal for high volume

automotive applications.

Note: Agilent Technologies

encoders are not recommended

for use in safety critical

Output Waveforms

applications. Eg. ABS braking

systems, power steering, life

support systems and critical care

medical equipment. Please

contact sales representative if

more clarification is needed.

Theory of Operation

The HEDT-9000 and 9100 are C-

shaped emitter/detector modules.

Coupled with a codewheel, they

translate the rotary motion of a

shaft into a two-channel digital

output.

As seen in the block diagram,

each module contains a single

Light Emitting Diode (LED) as its

light source. The light is

collimated into a parallel beam by

means of a single polyetherimide

lens located directly over the

LED. Opposite the emitter is the

integrated detector circuit. This

IC consists of multiple sets of

photodetectors and the signal

processing circuitry necessary to

product the digital waveforms.

by the pattern of spaces and bars

on the codewheel. The

signal processing circuitry

resulting in A, A, B, and B. Two

comparators receive these signals

and produce the final outputs for

channels A and B. Due to this

integrated phasing technique, the

digital output of channel A is in

quadrature with that of channel B

(90 degrees out of phase).

photodiodes which detect these

interruptions are arranged in a

pattern that corresponds to the

radius and design of the code-

wheel. These detectors are also

spaced such that a light period on

one pair of detectors corresponds

to a dark period on the adjacent

pair of detectors. The photodiode

outputs are then fed through the

Definitions

The codewheel rotates between

the emitter and detector,causing

the light beam to be interrupted

Count (N): The number of bar

and window pairs or counts per

revolution (CPR) of the

codewheel.

Pulse Width (P): The number of

electrical degrees that an output

is high during 1 cycle. This value

is nominally 180°e or 1/2 cycle.

Absolute Maximum Ratings

Storage Temperature, T_S^{.....................................................................}-40°C to 125°C

Operating Temperature, T_A^{................................................................}-40°C to 125°C

Supply Voltage, V ^{......................................................................................}-0.5 V to 7 V

Output Voltage, V ^{........................................................................................}-0.5 V to V

Output Current per Channel, I_out^{.................................................}-1.0 mA to 5 mA

Pulse Width Error (∆P): The

deviation, in electrical degrees of

the pulse width from its ideal

value of 180°e.

Phase (φ): The number of elec-

trical degrees between the center

module, channel A will lead

channel B. If the codewheel

State Width (S): The number of

electrical degrees between a

transition in the output of channel

A and the neighboring transition

in the output of channel B. There

are 4 states per cycle, each

nominally 90°e.

of the high state of channel A and

rotates in the opposite direction,

the center of the high state of

channel B will lead channel A.

channel B. This value is nominally

Optical Radius (R_op): The dis-

90°e for quadrature output.

tance from the codewheel’s center

of rotation to the optical center

(O.C.) of the encoder module.

Phase Error (∆φ): The deviation

of the phase from its ideal value

of 90°e.

State Width Error (∆S): The

deviation, in electrical degrees, of

each state width from its ideal

value of 90°e.

Direction of Rotation: When the

codewheel rotates in the direction

of the arrow on top of the

Recommended Operating Conditions

Parameter

Temperature

Symbol

Min.

-40

Typ.

Max.

125

5.5

Units

°C

Notes

V_CC

C_L

Supply Voltage

Load Capacitance

Count Frequency

4.5

Volts

Ripple < 100 mV_p-p

3.3 kΩ pull-up resistor

Velocity (rpm) x N

100

kHz

Note: The module performance is guaranteed to 100 kHz but can operate at higher frequencies.

Encoding Characteristics

Encoding Characteristics over Recommended Operating Range and Recommended Mounting Tolerances.

These Characteristics do not include codewheel/codestrip contributions.

Description

Pulse Width Error

Logic State Width Error

Phase Error

Sym.

∆P

Typ.

Case 1 Max.

Case 2 Max.

Units

°e

Notes

∆S

°e

∆φ

°e

Case 1: Module mounted on tolerance circle of ± 0.13 mm (± 0.005 in.).

Case 2: HEDT-9000 mounted on tolerances of ± 0.50 mm (0.020").

HEDT-9100 mounted ontolerances of ± 0.38 mm (0.015").

Electrical Characteristics

Electrical Characteristics over Recommended Operating Range, typical at 25°C.

Parameter

Supply Current

Symbol

Min.

Typical

Max.

Units

Notes

I_CC

High Level Output Voltage

Low Level Output Voltage

Rise Time

V_OH

V_OL

t_r

2.4

Volts

I_OH= -40 µA max.

0.4

I_OL= 3.2 mA

200

C_L= 25 pF

R_L= 11 kΩ pull-up

Fall Time

t_f

Recommended Codewheel Characteristics

Codewheel Options

Optical

Radius

mm (in.)

HEDS

Series

CPR

(N)

Option

5120

11.00 (0.433)

100

192

200

256

360

400

500

512

Figure 1. Codestrip Design.

6100

500

1000

23.36 (0.920)

Parameter

Window/Bar Ratio

Window Length

Symbol

φ_w/φ_b

Minimum

0.7

Maximum

Units

Notes

1.4

1.8 (0.07)

2.3 (0.09)

mm (inch)

Absolute Maximum

Codewheel Radius

R_C

R_OP+ 1.9 (0.075) mm (inch) Includes eccentricity

errors

Mounting Considerations

Figure 2. Mounting Plane Side A.

Figure 3. Mounting Plane Side B.

Figure 5. HEDS-6100 Codewheel.

Figure 4. HEDS-5120 Codewheel.

Ordering Information

0 0

HEDT-9001 Option

HEDS-6100 Option

Resolution

Shaft Diameter

(Cycles/Rev)

06 - 1/4 in.

08 - 3/8 in.

09 - 1/2 in.

10 - 5/8 in.

A - 500

HEDT-910

Option

HEDS-5120 Option

Lead

Resolution (Cycles/Rev)

Shaft Diameter

01 - 2 mm

02 - 3 mm

03 - 1/8 in.

04 - 5/32 in.

05 - 3/16 in.

06 - 1/4 in.

11 - 4 mm

14 - 5 mm

12 - 6 mm

13 - 8 mm

0 - Straight Leads

1 - Bent Leads

C - 100 CPR G - 360 CPR

D - 192 CPR A - 500 CPR

E - 200 CPR I - 512 CPR

HEDT-9001

HEDT-9100

HEDT-9101

01 02 03 04 05 06 08 09 10 11 12 13 14

HEDS-6100

HEDS-5120

01 02 03 04 05 06 08 09 10 11 12 13 14

www.agilent.com/semiconductors

For product information and a complete list of

distributors, please go to our web site.

For technical assistance call:

Americas/Canada: +1 (800) 235-0312 or

(408) 654-8675

Europe: +49 (0) 6441 92460

China: 10800 650 0017

Hong Kong: (+65) 271 2451

India, Australia, New Zealand: (+65) 271 2394

Japan: (+81 3) 3335-8152(Domestic/Interna-

tional), or 0120-61-1280(Domestic Only)

Korea: (+65) 271 2194

Malaysia, Singapore: (+65) 271 2054

Taiwan: (+65) 271 2654

Data subject to change.

Obsoletes 5988-2577EN

February 11, 2002

5988-5280EN

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