KA3120 查看數據表（PDF） - Fairchild Semiconductor

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KA3120

SPINDLE & VOICE COIL MOTOR ONE CHIP DRIVER

Fairchild Semiconductor 

HDD PRODUCTS

PRELIMINARY

KA3120

ELECTRICAL CHARACTERISTICS (Continued)

(Ta=25°C, unless otherwise specified)

Characteristic

SPINDLE MCLOCK

High threshold voltage

Low threshold voltage

High input current

High input current

VCM PWM CONTROL

High PWMH input current

Low PWMH input current

High PWML input current

Low PWML input current

PWMH high level input voltage

PWMH low level input voltage

PWML high level input voltage

PWML low level input voltage

CFVCM voltage1

CFVCM voltage2

CFVCM voltage3

CFVCM voltage4

CFVCM voltage5

CFVCM voltage6

CFVCM voltage7

CFVCM voltage8

CFVCM voltage9

PWM current ratio (VCM)

PWMH current variation

PWML current variation

VCM PWM FILTER

Maximum phase shift

Filter cut-off frequency

Filter attenuation at 1MHz

Symbol

Test conditions

Min. Typ. Max. Unit

VMH

VML

IMH

IML

−

2.0 1.4

−

V

−

−

1.4 0.8

V

−

15 25 35

µA

−

−10 0

10

µA

IPWMH1 PWMH=100%

100 113 130 µA

IPWMH2 PWMH=0%

−130 −113 −100 µA

IPWML1 PWML=100%

100 113 130 µA

IPWM2 PWML=0%

−130 −113 −100 µA

VPWMH1

−

3.0

−

−

V

VPWMH2

−

−

− 2.0

V

VPWML1

−

3.0

−

−

V

VPWM2

−

−130 −113 −100 V

VCFVC1 PWMH=100%,PWML=100% 5.90 6.06 6.30

V

VCFVC2 PWMH=100%,PWML=50% 5.80 6.00 6.20

V

VCFVC3 PWMH=100%,PWML=0%

5.70 5.94 6.10

V

VCFVC4 PWMH=50%,PWML=100% 3.90 4.06 4.30

V

VCFVC5 PWMH=50%,PWML=50%

3.80 4.00 4.20

V

VCFVC6 PWMH=50%,PWML=0%

3.70 3.94 4.10 V

VCFVC7 PWMH=0%,PWML=100%

1.90 2.06 2.40

V

VCFVC8 PWMH=0%,PWML=50%

1.80 2.00 2.30 V

VCFVC9 PWMH=0%,PWML=0%

1.70 1.94 2.20 V

RPWM

−

30 32 34

IVPWM

−

0.8 1.0 1.2 mA

IVPWM

−

27 32.3 36

µA

∆Φ

FCO

αFILTER

Measure at 500HZ,

CFVCM=10nF

−

−

−

−

2

deg

− 100 −

µA

−

70

−

dB

MIC-99D001

17

January 1999

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