MLX10420AA Datasheet | Melexis

Features and Benefits Supply voltage up to 12 V. Interface directly with 3.3/5 V CMOS logic µP Serial peripheral interface Can drive two air core actuators over the full 360° and one over 90° . Open circuit or short circuit detection of the drivers’ outputs. Small size (SSOP20 package) Real time angle tracking Applications Air-core meter Driver Dashboard Industrial Metering Ordering Code Product Code MLX10420 Temperature Code R Package Code FR Option Code AAA-000 Packing Form Code RE Legend: Temperature Code: Package Code: Packing Form: Ordering example: R for Temperature Range -40° c to 105° c FR for SSOP 209 mil RE for Reel MLX10420RFR-AAA-000-RE 1 Functional diagram VCC VCC VIO 2 General Description The MLX10420 is a µP peripheral for air-core meters control using SIN/COS PWM mands. The circuit controls two independent sets of CMOS power bridges. A ten bit angle is displayed with 9 bits per quadrant. The PWM frequency is set by an on chip oscillator. A power-on self test detects open or short-circuits outputs for each air-core meter and a real time angle tracking avoids display errors. The chip can also drive one small angle air-core meters (90° ). The munication with the µP is done via a three wires serial link. The chip outputs an error status on a special pin. SIN1P POR CSB SCLK SI SO SPI BUF 1 360deg SIN1M COS1P COS1M SIN2P logic BUF 2 360deg RC OSC BUF 3 90deg SIN2M COS2P COS2M OUT3 ERRB TEST 3901010420 Rev 2 Page 1 of 25 Device specification Jun/12 Free Datasheet http://.. 3-channel air-core gauge driver with serial interface 3 History Table 1 shows the revisions of this document. Version 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Date 20/4/07 2/8/07 3/10/07 02/06/08 09/10/08 13/05/2009 13/6/2012 Name hva hva hva fbe fbe fbe adl Description Initial version Major rework Rework at DI phase Updated SPI message format Updated block diagram (missing VIO pin) - 6 Updated Calibration procedure timings from 16us to 17.5us -...