Melville, N.Y.LSI Computer Systems Inc.(LSI/CSI) has developed a low-cost precision stepper motor controller designated LS7290 that is designed to control two-phase bipolar stepper motors or four-phase unipolar stepper motors with minimum burden on the host microcontroller.
The low-cost LS7290 can replace LSI/CSI's expensive L297 in most applications while providing more programmable micro-steps, according to the company. The LS7290 is capable of a large selection of step sizes, ranging between full and 1/32 step.
LS7290 features include a nominal clock frequency of 8MHz; a maximum stepping rate of greater than 30k per second; programmable inter-step blanking delays of 1.25-µs, 2.5-µs, 3.75-µs, and 5-µs at 8MHz; H-bridge PWM resolution of 0.39%; and supply voltage of 3V to 5.5V.
Pricing: 1,000 pieces is $1.15.
Datasheet: click here.
LSI Computer Systems Inc. (LSI/CSI) 1-631- 271-0400, www.lsicsi.com