Broadcom AEDR-9940 Optical Encoders

Broadcom AEDR-9940 Optical Encoders are versatile three-channel reflective optical encoders. The Broadcom AEDR-9940 encoders offer selectable options for three-channel digital or analog differential outputs (A, B, I). In analog mode, the device provides three channels of differential analog outputs (Sine+, Sine-, Cos+, Cos-, I+, I-) for direct interfacing with external interpolators. In digital mode, it delivers two-channel quadrature digital outputs (AB) and a third channel for digital indexing. TTL compatibility allows it to easily interface with various signal processing circuitries, providing seamless integration into existing systems.

Features

Analog output option at 3x channels single-ended, differential analog output, and analog or digital index output
Digital output option at 3x channels differential or TTL compatible
2-channel quadrature (AB) digital outputs for direction sensing and a 3rd channel, index (I) digital output
Wide selection of built-in interpolator with 1x to 6x, 8x, 9x, 10x, 12x, 16x, 20x, 25x, 32x, 50x, 64x, 80x, 100x, 128x, 160x, 256x, 320x, 640x to 1000x

SPI programmable interpolator from 1x to 1024x
Surface mount leadless package of 4.0mm x 4.0mm x 0.7mm (LxWxH)
3.3V and 5.0V operating voltage supply
Built-in LED current regulation
198.4375 LPI (lines/inch) or 7.8125 LPmm (lines/mm) or 0.128mm (pitch) high encoding resolution
Wide operating temperature ranges from -40°C to 115°C

Applications

Closed-loop stepper motors
Small motors, actuators
Industrial printers
Robotics
Card readers

PTZ camera
Portable medical equipment
Optometric equipment
Linear stages

Datasheets

AEDR-9940 three-channel reflective incremental encoder with analog or digital differential output (198.4 LPI)
AEDR-9940A/9940ERA three-channel reflective incremental encoder with analog or digital output (198.4 LPI), AEC-Q100 qualified