iC-WT
Overview
The device iC-WT is an evaluator IC for optical increment linear and rotary motion sensors, e.g. glass scales or shaft encoders. A photodiodes array supplies the input signals for the monolithically integrated amplifiers, comparators and the TTL compatible push-pull output drivers.
- Differential scanning for track A and B
- Constant-light-evaluated scanning for the index track Z with adjustable relative threshold
- Photocurrent amplifier with high cut-off frequency
- Current comparators with hysteresis
- Index track Z selectable gated by tracks A and B
- Current-limited and short-circuit-proof push-pull outputs
- Outputs TTL compatible
- Adjustable LED current control for constant optical receiver power
- Integrated 50mA driver for the transmit LED
- LED current monitoring and error message upon violating the control range
