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Blog
Friday, June 5, 2009
Melexis Microelectronic Integrated Systems MLX10420: Gauge driver runs as many as three air-core meters
Jun 5 2009 1:12PM | Permalink |Comments (0) |
Aiming at automotive and industrial applications, the triple-air-core-gauge MLX10420 driver has a serial interface and drives two 360° meters and one 90° meter. The device uses sin/cos PWM drivers and serial commands to control two sets of CMOS power bridges. An on-chip oscillator sets 9-bit-per-quadrant-resolution PWM and a 10-bit angle display. Other features include a power-on self -test, which detects open- or short-circuit outputs for each meter and provides a real-time-angle-tracking scheme to avoid display errors. The device enables communication with the microprocessor using a three-wire serial link and provides an error-status output pin. Available in an SSOP20 package, the MLX10420 costs 98 cents (10,000).
Melexis Microelectronic Integrated Systems, www.melexis.com
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