AEDR-9820/AEDR-9820A Series Incremental Encoders

Broadcom's AEDR-9820 and AEDR-9820A are three-channel reflective optical encoders that can be configured to analog or digital outputs, employing reflective technology for motion control purposes. The encoders are designed to operate over a -40°C to +115°C temperature range and are suitable for commercial, industrial, and automotive end applications. Automotive options are AEC-Q100 qualified with a -40°C to +125°C operating temperature range.

The selectable options are two-channel differential analog with a third channel differential digital or analog index output or three-channel digital differential A, B, and I output. The AEDR-9820 and AEDR-9820A in analog encoder modes with two-channel differential analog outputs (Sin, /Sin, Cos, /Cos) can be interfaced directly with available external interpolators.

The encoders house an infrared LED light source and photodetecting circuitry in a single package. The small size of 4.00 mm (L) x 4.00 mm (W) x 1.05 mm (H) allows them to be used in a wide range of miniature commercial applications where size and space are primary concerns.

Features

• Analog output option: two-channel differential analog output and differential digital or analog index output
• Digital output option: three-channel differential or TTL compatible; two-channel quadrature (AB) digital outputs for direction sensing and a third channel, index digital output
• Built-in interpolator for 1x, 2x, 4x, 8x, and 16x interpolation
• Surface mount leadless package: 4.0 mm (L) x 4.0 mm (W) x 1.05 mm (H)
• Operating voltage of 3.3 V and 5.0 V supply
• Built-in LED current regulation
• Wide operating temperature range from -40°C to +115°C
• Automotive AEC-Q100 Grade 1 option available (operating temperature range from -40°C to +125°C)
• High encoding resolution: 225 LPI (lines/in.) or 8.86 LPmm (lines/mm)