led light: Avago Technologies introduces 254lpi optical encoders
Press release; Rodney Chan, DigiTimes.com [Thursday 18 May 2006]
Avago Technologies today announced a reflective incremental optical encoder, the AEDR-8400, offered in a surface-mount package with dimensions 3×3.28×1.262mm (L×W×H).
The Avago AEDR-8400 encoder, which supports a resolution of 254 lines per inch (LPI), can be used for consumer, office, industrial and automotive interior applications ranging from scanners, printers, miniature cameras, and seat-adjustment and rear-view-mirror controls in automobiles.
The AEDR-8400 provides two-channel quadrature output, a count frequency up to 15KHz and an operating temperature range of -20 to +85°C. The AEDR-8400 operates from a single 2.8V (nominal) supply, drawing 12mA (including 6mA LED current), typically.
Its lead-free packaging complies with the European Union’s directive for Restriction of Hazardous Substances (RoHS), due to take effect on July 1, the company said.
The Avago AEDR-8400 reflective encoder consists of an LED light source, a special photodetector IC with integrated electronics, and integrated optics. They can be used with a reflective code wheel to sense rotary position and velocity, or with a linear code strip to sense linear position and velocity.
The devices provide two-channel digital outputs in quadrature, which provides both count and direction information. They are insensitive to axial play and maintain performance and accuracy over a wide variation in the gap between sensor and code wheel or strip.
“The AEDR-8400, 254LPI is just the first resolution option in a series of miniature reflective optical encoders under development at Avago Technologies,” said Chong Khin Mien, vice president and general manager of Avago’s Motion Control Products Division. “Avago’s continuous innovation in developing the industry’s smallest form factor encoders with the widest range of resolutions helps us meet our customers’ changing needs for various applications and shortens their time to market.”
Press release; Rodney Chan, DigiTimes.com [Thursday 18 May 2006]
Avago Technologies today announced a reflective incremental optical encoder, the AEDR-8400, offered in a surface-mount package with dimensions 3×3.28×1.262mm (L×W×H).
The Avago AEDR-8400 encoder, which supports a resolution of 254 lines per inch (LPI), can be used for consumer, office, industrial and automotive interior applications ranging from scanners, printers, miniature cameras, and seat-adjustment and rear-view-mirror controls in automobiles.
The AEDR-8400 provides two-channel quadrature output, a count frequency up to 15KHz and an operating temperature range of -20 to +85°C. The AEDR-8400 operates from a single 2.8V (nominal) supply, drawing 12mA (including 6mA LED current), typically.
Its lead-free packaging complies with the European Union’s directive for Restriction of Hazardous Substances (RoHS), due to take effect on July 1, the company said.
The Avago AEDR-8400 reflective encoder consists of an LED light source, a special photodetector IC with integrated electronics, and integrated optics. They can be used with a reflective code wheel to sense rotary position and velocity, or with a linear code strip to sense linear position and velocity.
The devices provide two-channel digital outputs in quadrature, which provides both count and direction information. They are insensitive to axial play and maintain performance and accuracy over a wide variation in the gap between sensor and code wheel or strip.
“The AEDR-8400, 254LPI is just the first resolution option in a series of miniature reflective optical encoders under development at Avago Technologies,” said Chong Khin Mien, vice president and general manager of Avago’s Motion Control Products Division. “Avago’s continuous innovation in developing the industry’s smallest form factor encoders with the widest range of resolutions helps us meet our customers’ changing needs for various applications and shortens their time to market.”
