S16 Features
- Small size — 16 mm OD (0.63 in.)
- 10 Resolutions from 250 to 4,096 CPR (1,000 to 16,384 PPR)
- 3 Shaft sizes: 1/8 in., 6 mm, 1/4 in.
- Three shaft torque options
- A/B quadrature output with index
- High retention connection cable (sold separately)
US Digital S16 Micro Rotary Encoder Description
The S16 miniature optical rotary encoder converts shaft position or speed into a quadrature output signal with index. This optical shaft encoder delivers resolutions up to 16,384 PPR in a housing measuring about 16 mm (5/8 in.) in diameter. It is available in 3 shaft sizes: 1/8 in., 6 mm, 1/4 in.
US Digital offers three different shaft torque options to suit a range of applications:
- 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.
This S16 miniature encoder is designed for use with a polarized high retention connector. After you make your selections in the Product Configurator, compatible cables will be displayed below and must be ordered separately.
Mechanical Drawings
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 | 0.1 |
0.4 | V V |
IOL= 4 mA, Vcc = 5V no load |
|
| High-level Output | 4.7 | 4.9 |
V V |
IOH= 4 mA, Vcc = 5V 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 |
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| 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. |
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