AVAGO AEDA-3300

AEDA-3300 Series
Ultra Miniature, High Resolution Incremental Kit Encoders
Data Sheet
Description
Features
The AEDA-3300 series are high performance, cost effective,
three-channel optical incremental encoder modules with
integrated bearing stage. By using transmissive encoder
technology to sense rotary position, the AEDA-3300
series emphasizes high reliability, high resolution and
easy assembly. Outputs of the AEDA-3300 encoders
are two channel quadrature and a third channel gated
index signals. These encoders can be easily mounted to
customer specific applications. Wide resolution options
are available for the AEDA-3300 series, while keeping the
same package size across the whole CPR range. The “One
size fits all” package eliminates the need for customers to
design different platforms for different resolutions. As the
AEDA-3300 encoders are designed for high temperature
and high operating frequency range, they are well suited
for industrial automation and motion control applications
 Three channels output (quadrature A & B output with
index channel)
Note: Avago Technologies encoders are not recommended for use in
safety critical applications. E.g. ABS braking systems, power steering,
life support systems and critical care medical equipment. Please contact
sales representative if more clarification is needed.
Applications
 Resolution options from 600 to 20000 Cycles Per
Revolution (CPR), up to 80000 counts with 4X decoding
 Cost effective
 -40° C to 125° C operating temperature
 Ultra miniature size (Ø 17 mm)
 Maximum 1 MHz or 650 kHz operating frequency
 Maximum 12000 RPM rotational speed
 Single 5 V supply
 Integrated RS 422 differential line driver
 Integrated bearing stage for easy mounting
 Bottom-up or top-down mounting options
 Motors
 Semiconductor Automation Machine
 Robotics
 Industrial Sewing Machine
 Packaging Machine
 Machine Tools
 Pick and Place Machines
ESD WARNING: NORMAL HANDLING PRECAUTIONS SHOULD BE TAKEN TO AVOID STATIC DISCHARGE.
Package Dimensions – Bottom-up Version
Dimensions in mm unless otherwise stated.
Tolerance:
x.x: ± 0.1mm
* Refer to Mechanical Characteristics Table for requirement on the solid shaft diameter.
Isometric Views – Bottom-up Version
2
Package Dimensions – Top-Down Version (With Coupling Plate)
Dimensions in mm unless otherwise stated.
Tolerance:
x.x: ± 0.1mm
* Refer to Mechanical Characteristics Table for requirement on the solid shaft diameter.
Isometric Views – Top-Down Version (With Coupling Plate)
3
Absolute Maximum Ratings
Storage Temperature
-40 to 125° C
Operating Temperature
-40 to 125° C
Supply Voltage
4.5 V to 5.5 V
Output Voltage
-0.5 V to Vcc
Output Current per Channel
20 mA
Max Frequency
1 MHz
Note: Absolute Maximum Ratings are those values beyond which the safety of the device cannot
be guaranteed. They are not meant to imply that the device should be operated at these limits.
The tables “Recommended Operating Conditions and Characteristics” provide conditions for actual
device operation.
Recommended Operating Conditions
Parameter
Symbol
Min.
Typical
Max.
Units
Notes
Temperature
TA
-40
25
125
C
Supply Voltage
VCC
4.5
5
5.5
V
Frequency
f
1.0
MHz
1.
2.
For CPR options of 10 000 CPR and below.
Gated by maximum rotational speed of
12000 RPM. Refer to section.
650
kHz
3.
Maximum Frequency and RPM. For CPR
options above 10 000 CPR and up to
20 000 CPR
Please consult factory for special
requirements of higher operating
frequency
4.
Encoding Characteristics
Encoding characteristics over recommended operating conditions. Typical values represent maximum values at 25° C
and 2000 RPM (1000 RPM for options above 10 000 CPR). See Output Waveform for the definitions of the errors.
Parameter
Symbol
Typical
Max.
Units
Remarks
Pulse Width Error
P
30
45
°e
See Note 1
45
60
55
70
25
40
30
50
50
60
20
20
25
30
30
35
15
20
25
45
See Note 2
40
45
See Note 3
State Width Error
Phase Error
Index Pulse Width Error
S

Po
Notes:
1. Applicable for CPR options of up to and include 4096 CPR
2. Applicable for CPR options from 5000 CPR, up to and include 10 000 CPR
3. Applicable for CPR options of above 10 000 CPR, and up to 20 000 CPR
4
See Note 2
See Note 3
°e
See Note 1
See Note 2
See Note 3
°e
See Note 1
See Note 2
See Note 3
°e
See Note 1
Electrical Characteristics TableElectrical characteristics over recommended operating conditions. Typical values at 25° C
Parameter
Symbol
Supply Current
ICC
High level Output Voltage
VOH
Low level Output Voltage
VOL
Minimum
2.5
Typical
Maximum
Units
55
100
mA
3.4
Notes
V
0.3
0.5
V
Mechanical Characteristics
Parameter
Dimension/Details
Tolerance
Units
Remarks
Standard Shaft Diameters
1.998
+0/-.01
(+0/-.0005)
mm
(in)
Mounting Screw Size:
Bottom-up (threaded mount)
Top-down (coupling plate)
M2
M2
Weight
12
Bearing material
Stainless Steel
miniature precision
bearing
Maximum RPM
12000
Maximum Axial Load
8
N
Based on data provided by bearing
manufacturer.
Maximum Radial Load
8
N
Based on data provided by bearing
manufacturer.
Maximum Initial Torque
3 x 10-3
Nm
At 25° C
Bearing Life
3
Years
Based on manufacturer’s data.
24 hours continuous testing,
at 125° C and maximum RPM.
g
See Note 1
Note:
1. This value represents the maximum mechanical permissible shaft speed of the kit encoder. However, for options with CPR > 5000, the maximum
shaft speed is limited by the maximum electrical frequency. Refer to Table Maximum Frequency and RPM for the comparison of the possible
operable frequency and RPM.
Mechanical and Environmental Tests
Test Name
Reference
Conditions
Vibration (non-operating)
IEC 68-2-64
5-2000 Hz at 20 G for 6-axis
Shock (non-operating)
IEC68-2-27
100 G at 10 ms
ESD
IEC 61000-4-2
4 kV
Electromagnetic Compatibility
(EMC)
IEC61000-4-4
Spike Frequency = 5 KHz, Duration = 15ms,
Repetition = 300 ms, Test Points = ±1000 & ±1500 V
Humidity
IEC-68-2-3
85% RH (Non-condensing)
Note: Any mechanical shock and vibration exceeding the stated values may cause damage to the encoder. The encoder should not be subjected to
excessive mechanical shock and vibration either during installation or operation.
5
Theory of Operation
The AEDA-3300 translates rotary motion of a shaft into
three channels of digital output. The AEDA-3300 series
consists of the following key parts: a single light emitting
diode (LED) light source, a focusing lens, a high-precision
codewheel, a photodetector IC with a set of uniquely
configured photodiodes, an interpolator IC, and a line
driver IC.
The LED emits light that is used to produce modulated
by the codewheel to produce a set of analog signals.
A high performance compensation and interpolation
IC processes the analog signals to produce the digital A,
B and index signals. These digital signals are further fed
through a line driver IC that produces the final differential
outputs for channels A, B, I, and their complements A, B
and I.
In a single size package, the AEDA-3300 is available for
wide selection of cycles per revolution (CPR) options, from
600 to 20000. This translates to a maximum resolution of
80000 counts after quadrature decode (4X), satisfying the
ever increasing requirement of higher encoder counts for
better motion feedback performance.
Maximum Frequency and RPM
CPR
Maximum
Frequency (kHz)
Maximum
RPM
600
1000 1
12000
1000
1000 1
12000
1024
1000 1
12000
2000
1000 1
12000
2048
1000 1
12000
2500
1000 1
12000
3000
1000 1
12000
4000
1000 1
12000
4096
1000 1
12000
5000
1000
12000
6000
1000
10000
7200
1000
8300
7500
1000
8000
8000
1000
7500
8192
1000
7300
10000
1000
6000
10240
650
3800
12000
650
3250
14400
650
2700
18000
650
2150
20000
650
1950
Notes:
1. Maximum allowable operating frequency will be lower due to
limitation in maximum permissible mechanical shaft speed.
The operable frequency is calculated based on the
formula:
Frequency (kHz) = CPR x (RPM / 60 x 103)
As an example, for the 1000 CPR option, the operable
frequency is up to 200 kHz, i.e.:
Maximum operable frequency for 1000 CPR option = 1000
x (12000 / 60 x 103 ) = 200 KHz
6
Output Waveforms
Amplitude
C
P
2.5 V
0.5V
CH. A
S1
S2
S3
S4
2.5 V
0.5 V
CH. B
2.5 V
0.5 V
CH. I
CH. I2.5 V
0.5 V
Po
CH. A2.5 V
0.5 V
CH. B2.5 V
0.5 V
Codewheel Rotation (Counter-clockwise )
Definitions
Count (N): N refers to the cycles per revolution (CPR) of the
encoder output.
Pulse Width Error (P): The deviation in electrical degrees
One Cycle (C): 360 electrical degrees (°e).
Index Pulse Width (Po): The number of electrical degrees
One Shaft Rotation: 360 mechanical degrees, N cycles
that an index is high during one full shaft rotation. This
value is nominally 180°e or ½ cycle. 90°e (¼ cycle) index
pulse width available upon request.
(rotary motion only).
Phase (): The number of electrical degrees between the
of the pulse width from its ideal value of 180°e.
center of the high state on the channel A and the center
of the high state of channel B. This value is nominally 90°e.
State Width (S): The number of the electrical degrees
between transitions in the output of the channel B. There
are 4 states per cycle, each nominally 90°e.
Pulse Width (P): The number of the electrical degrees that
State Width Error (S): The deviation in electrical degrees of
an output is a high-level during one cycle, nominally
180°e or ½ a cycle.
7
each state width from its ideal value of 90°e.
Direction of Motor Rotation
Pin Assignments
When the codewheel rotates in a counter-clockwise
direction, channel A will lead channel B (Figure 1 illustrates the definition of clockwise direction of codewheel
rotation). When the codewheel rotates in a clockwise
direction, channel B will lead channel A.
Pin
Signal
Description
Pin 1
A+
Digital Output
Pin 2
A-
Digital Output
Pin 3
Gnd
Ground Pin
Pin 4
Gnd
Ground Pin
Electrical Interface
Pin 5
B+
Digital Output
Avago Technologies recommends National Semiconductor DS26C32AM Quad Differential Line Receiver
or compatible as line receiver. Unused pin should be
grounded for noise reduction. Shielded Cable should be
used for better noise immunity.
Pin 6
B-
Digital Output
Pin 7
Vcc
Input Voltage
Pin 8
Vcc
Input Voltage
Pin 9
I+
Digital Output
Pin 10
I-
Digital Output
Mating Connector
AEDA-3300 requires a 5 x 2 (1.27 mm x 1.27 mm) female
IDC Connector. The cable used is 0.635 mm pitch flat
ribbon cable.
Note:
1. Both Pin 7 and Pin 8 must be connected to Vcc.
2. Either Pin 3 or Pin 4 must be connected to Gnd.
Clockwise direction of codewheel rotation.
Figure 1. As viewed from the top PCB end of the encoder
+5V
A+, B+, I+
A+, B+, I+
RT
Cable
A-, B-, IEncoder/Line driver
Figure 2. Recommended receiver circuit.
8
A-, B-, ILine Receiver
Ordering Information
AEDA - 3300 –
Resolution Options
CPR
Counts after 4X Decoding
A4
A6
600
1000
2400
4000
Top-down, with
coupling plate
A7
AB
1024
2000
4096
8000
Bottom-up, without
B
coupling plate
AC
AJ
2048
2500
8192
10000
AM
AQ
3000
4000
12000
16000
AT
B1
4096
5000
16384
20000
B7
BJ
6000
7200
24000
28800
BK
7500
30000
BM
BN
8000
8192
32000
32768
C1
C3
10000
10240
40000
40960
CH
12000
48000
CX
14400
57600
DM
18000
72000
E1
20000
80000
Mounting Options
T
Note: Please contact the
factory for availability of
other CPR options.
For product information and a complete list of distributors, please go to our web site: www.avagotech.com
Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries.
Data subject to change. Copyright © 2005-2012 Avago Technologies. All rights reserved. Obsoletes AV01-0084EN
AV02-3570EN - June 11, 2012