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MLX10420
Low Cost Triple Air Core Gauge Driver
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The MLX10420 is a low cost microprocessor peripheral for air-core meter control with SIN/COS PWM drivers and serial commands. The circuit controls two independent sets of CMOS power bridges. A 10-bit angle is displayed with 9 bits per quadrant resolution PWM whose frequency is set by an on chip oscillator. A power-on self test detects open or short-circuit outputs for each air-core meter. A real time angle tracking scheme avoids display errors.
The chip can additionally drive one small angle air-core meter (90°). The communication with the microprocessor is done via a three wire serial link. A beneficial feature on the MLX10420 is the special output pin for a possible error status.
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Features and Benefits
- drive up to 3 air core meters (two 360degr and one 90degr)
- special output pin for possible error status
- low cost analog metering
- SSOP20 package
Product Applications
Indicator driver
Motor Control
Assets
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