MOTOR SPEED CONTROL
MITSUBISHI
M51971L/FP
MOTOR SPEED CONTROL
DESCRIPTION
The M51971 is a semiconductor integrated c...
Description
MITSUBISHI
M51971L/FP
MOTOR SPEED CONTROL
DESCRIPTION
The M51971 is a semiconductor integrated circuit designed to control the motor rotating speed. The built-in FG amplifier with high gain enables to use a wide range of rotating speed detector (FG detector). Use of less external parts enables DC motors to be controlled with high precision.
PIN CONFIGURATION (TOP VIEW)
Non-inverted input Inverted input Amplifier output
1 2 3 4
FEATURES
q Wide range of supply voltage 4 – 17.5V q Variation coefficient of supply voltage ±0.005%/V (standard) q Load variation coefficient ±0.01% (standard, full load range) q Temperature coefficient of rotating speed 7ppm/˚C (standard) q Built-in high performance FG amplifier
Schmitt input Time constant Stabilized voltage GND Integration capacitance Output
M51971L
5 6 7 8 9
APPLICATION
Motor rotating speed control in floppy disk driver, player, tape recorder, car stereo, etc.
Power supply 10
Outline 10P5
RECOMMENDED OPERATING CONDITIONS
Supply voltage range 4 – 17.5V Rated supply voltage 9V Input voltage range at pin 1 -0.4 – Vcc Note 1 Input voltage range at pin 4 -0.4 – Vcc Highest setup...
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