S16 Product Description
The S16 16mm micro-optical shaft encoder is designed to provide A, B, and Index digital quadrature signals for high volume restricted space applications. The S16 encoder is available with either a bushing or ball bearing system for high speed applications. The shaft torque is designed to provide the feel of a potentiometer for front-panel manual interfaces. The S16 series encoder is connected using a 5-conductor, polarized, 0.8mm pitch connector (Hirose part number DF52-5P-0.8C). The mating cable (see the Cables web page) is not included and is available separately.
Product Specifications
View here or download the specifications
ENVIRONMENTAL
PARAMETER |
VALUE |
UNITS |
Operating Temperature |
-40 to 100 |
C |
Electrostatic Discharge, IEC 61000-4-2 |
±12 |
kV |
Vibration (10Hz to 2kHz, sinusoidal) |
20 |
G |
Shock (6 milliseconds, half-sine) |
75 |
G |
MECHANICAL
SPECIFICATION |
SLEEVE BUSHING |
BALL BEARING |
Max. Acceleration |
10000 rad/sec² |
250000 rad/sec² |
Max. Shaft Speed (1) (mechanical) |
100 RPM |
15000 RPM |
Max. Shaft Torque |
0.5 ±0.2 in-oz (D-option) 0.3 in-oz (N-option) |
0.05 in-oz |
Max. Shaft Loading |
2 lbs. dynamic 20 lbs. static |
1 lb. |
Bearing Life |
> 1000000 revolutions |
L10 = (22/Fr)³ * Where L10 = bearing life in millions of revs, and Fr = radial shaft loading in pounds |
Weight |
0.48 oz. |
0.43 oz. |
Max. Shaft Runout |
0.0015 in. T.I.R. |
0.0015 in. T.I.R. |
Max. Panel Nut Tightening Torque |
20 in-lbs |
20 in-lbs |
Technical Bulletin TB1001 - Shaft and Bore Tolerances |
Download |
* Only valid with negligible axial shaft loading.
(1) The maximum speed due to electrical considerations is dependent on the CPR. See the E16 product page.
ELECTRICAL
PARAMETER |
MIN. |
TYP. |
MAX. |
UNITS |
NOTES |
Supply Voltage |
4.5 |
5.0 |
5.5 |
V |
|
Supply Current |
|
18 |
26 |
mA |
no load |
Low-level Output |
|
|
0.4 |
V |
IOL= 4 mA, Vcc = 5V |
0.1 |
|
V |
no load |
High-level Output |
4.7 |
|
|
V |
IOH= 4 mA, Vcc = 5V |
|
4.9 |
|
V |
no load |
Output Rise Time |
|
80 |
135 |
ns |
no load |
Output Fall Time |
|
80 |
135 |
ns |
no load |
Maximum Output Frequency 250/256 CPR 500/512 CPR 1,000/1,024 CPR 2,000/2,048 CPR 4,000/4,096 CPR |
0.2 0.4 0.8 1.6 1.85 |
|
|
MHz MHz MHz MHz MHz |
|
PHASE RELATIONSHIP
- Specifications apply over the entire operating temperature range.
- Values are for the worst error over full rotation.
- Refer to the timing diagram below.
PARAMETER |
SYMBOL |
MIN. |
TYP. |
MAX. |
UNITS |
Symmetry |
X, Y |
150 |
180 |
210 |
°e |
Quadrature |
Z |
60 |
90 |
120 |
°e |
Index Pulse Width |
Po |
60 |
90 |
120 |
°e |
Ch. I Rise After Ch. B or Ch. A Fall |
t1 |
|
10 |
|
ns |
Ch. I Fall After Ch. B or Ch. A Rise |
t2 |
|
10 |
|
ns |
TIMING DIAGRAM

- CPR
- The number of Cycles (C) of the A or B outputs Per Revolution.
- Index (I)
- The index output goes high once per revolution, coincident with the low states of channels A and B, nominally 1/4 of one cycle (90°e).
- One Shaft Rotation
- 360 mechanical degrees.
- One Electrical Degree (°e)
- 1/360th of one cycle.
- One Cycle (C)
- 360 electrical degrees (°e). Each cycle can be decoded into 1, 2, or 4 states, referred to as x1, x2, or x4 resolution multiplication.
- PPR
- The number of resolvable Positions Per Revolution of the encoder disk with x4 quadrature decoding.
- Quadrature (Z)
- The phase lag or lead between channels A and B in electrical degrees, nominally 90°e.
- Symmetry
- A measure of the relationship between (X) and (Y) in electrical degrees, nominally 180°e.
PIN-OUT
PIN |
DESCRIPTION |
1 |
Ground |
2 |
Index |
3 |
A channel |
4 |
+5VDC power |
5 |
B channel |
Additional Information
Product Notes
-
US Digital® warrants its products against defects in materials and workmanship for two years. See complete warranty for details.
-
Cables and connectors are not included and must be ordered separately.
-
For ordering information please configure the product and you'll see the Compatible Cables / Connectors section above.
Datasheets
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