S16 Features

  • Small size (16mm OD)
  • Low Cost
  • Snap-in polarized connector
  • 250/256 to 4,000/4096 cycles per revolution (CPR)
  • 1,000/1024 to 16000/16384 pulses per revolution (PPR)
  • Single +5V supply
S16 Micro Optical Shaft Encoder

S16 Product Description

Restriction of Hazardous Substances

The S16 16mm micro-optical shaft encoder is designed to provide A, B, and Index digital quadrature signals for high volume, restricted space applications. 

Three shaft torque options are available:

  • Default (-D): sleeve bushing with higher damping for human interface applications.
  • Ball bearing (-B): miniature precision ball bearings suitable for high-speed applications.
  • Light static drag (-N): sleeve bushing with lower damping for low-speed applications.

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.

Mechanical Drawings

S16 Micro Optical Shaft Encoder

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 in-oz (D-option)
0.3 in-oz (N-option)		 0.05 in-oz (B-option)
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

B leads A for clockwise shaft rotation, and A leads B for counterclockwise rotation viewed from the shaft side of the encoder.

PIN-OUT

PIN DESCRIPTION
1 Ground
2 Index
3 A channel
4 +5VDC power
5 B channel

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.

Configuration Options
S16 -CPR (Cycles Per Revolution)
250
256
500
512
1000
1024
2000
2048
4000
4096
-Shaft Diameter
125 (1/8")
236 (6mm)
250 (1/4")
-Output
S (Single-Ended)
-Torque
D (Default Torque)
B (Ball Bearing)
N (Light Static Drag)

PLEASE NOTE: This chart is for informational use only. Certain product configuration combinations are not available. Visit the S16 product page for pricing and additional information.

← Go to the S16 Micro Optical Shaft Encoder details page