A25E-0030

Application Note AR35-T25E/S AR35 Through-Hole Series Programmable Absolute and Incremental Encoders Introduction Application Robotic automation and engineering The Broadcom AR35-T25 series are programmable Factory automation and drone reflective absolute through-hole rotary encoders designed Medical and dentistry, devices and equipment for space-constrained motion control applications. High-accuracy portable and handheld devices The AR35-T25 series encoder has an overall diameter of 35 Miniature motor, servo motor, linear actuator mm with a maximum axial through hole of 9.5 mm for Related Part Ordering Information through shaft motors and axial cabling. The AR35-T25 series provides incremental ABI and UVW in Ordering Information Type differential mode. Both come with a recommended temperature range of 40C to 115C suitable for most AR35-T25S/E AR35 SSI/ESL Single-Turn Absolute Encoder industrial applications. Dual-mode operating voltages of 3.3V and 5V are suitable for handheld and portable device applications. Employing Broadcom-patented Reflective Optical Encoding Theory, the AR35-T25 series offers high-accuracy with correction, which is unattainable by the magnetic encoder. Broadcom AR35-ThroughHole-Series-AN100 April 29, 2019AR35-T25E/S Application Note AR35 Through-Hole Series Programmable Absolute and Incremental Encoders Mounting Requirements Figure 1 shows the mounting requirements to set up the encoder to the optimum position for typical encoder performance. Overall mounting requirements applicable for the following items: AR35 DFN Encoder to code wheel operational gap. Code wheel placement. Figure 1: Mounting Requirement Notes on Assembly 1. The encoder assembly requires a clean room condition of Class 100k or better. 2. The encoder must be enclosed with an IP50-rated enclosure. 3. Encoder has protective tape to prevent contamination. Remove the tape at the location, away from the ASIC slot as shown in Figure 2 to prevent scratches to the ASIC and damage to the LED wire bond after the SMD reflow processes. Figure 2: Removal of Protective Tape Broadcom AR35-ThroughHole-Series-AN100 2