M56786FP Просмотр технического описания (PDF) - MITSUBISHI ELECTRIC

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M56786FP

SPINDLE MOTOR AND 1CH ACTUATOR DRIVER

MITSUBISHI ELECTRIC  

MITSUBISHI <CONTROL / DRIVER IC>

M56786FP

SPINDLE MOTOR AND 1CH ACTUATOR DRIVER

I/O CHARACTERISTICS of ACTUATOR DRIVE PART

1.65V

20K

-

Vrefm

+ Vrefm Amp.

20K

6K 24K

+

-

IN-

6K 24K

6K 24K

+

-

IN+

Input Buffer

6K 24K

VDD+

VM+

VM-

VDD-

Reference 1.65V

VCC2

VDD+

<INPUT>

IN+

1.65V

0.2V

<OUTPUT>

VM+

VM-

Vrefm

0.8V

0.8V

Vrefm= [(VDD+)+(VDD-)] / 2

Gain=x8

CH1 power amplifier output terminal equivalent circuit

GND

Figure 8.

(OUT+

OUT-)

VDD-

The power amplifiers of CH1 is shown in Figure 8.

The power supplies is VDD+ and VDD-. Generally, the VDD- pin is

connected to GND(0V). Also, it is possible to be connected to other

power supply larger than 0 volts (ex:5V).

The source side of the power amplifier output stage consists of a

PNP and a NPN. The emitta of the PNP is connected to VCC2. So,

the power of the PNP supplies can be adjusted externally.

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