ML2340 데이터 시트보기 (PDF) - Micro Linear Corporation

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ML2340

Single Supply, Programmable 8-Bit D/A Converters

Micro Linear Corporation 

ML2340, ML2350

TYPICAL APPLICATIONS (Continued)

+12V

VCC

ML2340

VOUT

VREFIN

VREFOUT

VZS

GAIN 0

AGND

GAIN 1

BIPOLAR

VOUT

AROUND

4.5V

4.50V

9.0V

256 CODES

4.5V

6.75V

256 CODES

5.625V

4.5V

256 CODES

4.5V

5.062V

4.5V 256 CODES

3.938V

3.375V

2.25V VOUT, GAIN 1/2

VOUT, GAIN 1/4

VOUT, GAIN 1

VOUT, GAIN 2

GND + 100mV

Figure 8. Single 12V Supply, Bipolar VOUT with 11-Bits Resolution Around 4.5V

MICRO-

CONTROLLER

+12V

+5V +12V

VCC 2

ML2340

0.1µF

17

XFER

0.1µF

2 +12V

+5V 19

PWR VC 11

10

OUTPUT+

16 REF PWR GND A 13

DB0

VREF OUT 20

VREF IN 1

VZS 4

DB7

18

GAIN 0

19

GAIN 1

VOUT 3

AGND 5

DGND 6

8

RSENSE

ML4406

14 CONTROL+

15

3

OUTPUT– 12

CONTROL–

PWR GND B

9

DISABLE

6 GND

20 POWERFAIL V(RET) 7

1

RETRACT

5

HIGH/LOW

I(RET) SET

4

R(RET)

1Ω

SERVO

COIL

FROM

MOTOR

WINDINGS

Figure 9. Hard Disc Drive Servo Coil Driver Providing 13-Bit Effective Resolution

10

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