Broadcom AEDR-98×0 Reflective Incremental Encoders

Broadcom AEDR-98×0 Reflective Incremental Encoders integrate an LED light source and photo-detecting circuitry in a single package. These three-channel reflective optical encoders can be configured to analog or digital outputs employing Reflective Technology for motion control. The selectable options are two channels differential analog with a third-channel differential digital or analog index output or three-channel digital differential A, B, and I output.

In analog mode, the AEDR-98×0 Encoders offer two-channel differential analog output (Sin, /Sin, Cos, /Cos), which can be interfaced directly with external interpolators. In digital mode, the AEDR-98×0 Encoders offer two-channel (AB) quadrature digital output and a 3rd channel digital index output with differential outputs available for all channels. Being TTL compatible, the outputs can be interfaced with most signal processing circuitries, providing easy integration and flexible design into existing systems.

The AEDR-98×0 Encoders are housed in a compact 4.0mm x 4.0mm x 1.10mm package, operate over a -40°C to +115°C temperature range, and are suitable for commercial, industrial, and automotive applications.

Features

Operating voltage 3.3V and 5.0V for both digital and analog mode
Encoding line density options
- AEDR-9830: 318LPI (12.52LPmm) base 625CPR at RoP 7.95mm
- AEDR-9820: 225LPI (8.86LPmm) base 256CPR at RoP 4.6mm
Selectable 1x, 2x, 4x, 8x, and 16x interpolation

200KHz base frequency, up to 2MHz at 16x
Separate optical track for the index to reduce optical noise coupling, compared to integrated single track index of other parts
Built-in LED current regulation
-40°C to +115°C operating temperature range
4.00mm x 4.0mm x 1.10mm surface-mount leadless package

Applications

Lidar
Robotics
Portable medical equipment
Industrial printers
Card readers

Close loop stepper motors
Small motors and actuators
PTZ cameras
Optometric equipment
Linear stages

Output Mode Selection Table

Chart - Broadcom AEDR-98x0 Reflective Incremental Encoders

Pin Designations

Broadcom AEDR-98x0 Reflective Incremental Encoders

White Papers

Reflective Surface Optical Motion Sensor Encoders