ELECTRICAL CHARACTERISTICS (continued)

Spindle Motor

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Units

Maximum Output Current

1

A

Sink On Resistance

0.4

Ohms

Total drive resistance

0.8

Ohms

dv/dt

Voltage Slew Rate

0.2

2

V/

µs

Spindle Current Sense FET

linearity

Large signal

Current sense circuit linearity

(spin-up). 2000:1 current sense.

1% to full scale current

5

%FS

Linearity

small signal

Current sense circuit linearity(at

speed). 500:1 current sense.

1% to 10% full scale

0.5

%

BW

Current loop bandwidth small

signal (at speed)

Lmotor 100

µHto 1 µH

20

KHz

FS

Full scale current error

5

%FS

matching

Current sense matching

25 to 250 mA

5

%

DAC Acceleration Control

res

Resolution

Full scale

8

bits

NL

Differential Non-linearity

0.5

LSB

INL

Integral Non-linearity

1

LSB

FS

Full scale accuracy

5

%

CT

Conversion time

10

ms

FSTC

Full Scale Temp Coefficient

250

ppm/

°C

1.235

1.25

1.245

V

0

0.2

0.3

V

Gain1X

Current Sense Gain at 500:1

502

525

554

Gain5X

Current Sense Gain at 2500:1

2400

2900

Step-up Converter

Step-up converter voltage

(using Tripler as a doubler)

above 5V.

Maximum load

6V

Digital Inputs (All digital inputs are CMOS compatible)

High level input voltage

30%

V

Low level input voltage

70%

V

High level output voltage

V

Low level output voltage

0.4

V

Input leakage current

°C+1

-1

µA

Power On Reset (Either low voltage detector can be disabled by trying the divider to a high voltage)

Minimum delay power OK to

RESET high

50.32

70.4

64.46

ms

Voltage reference

1.235

1.25

1.265

V

Retract

Retract time before brake

power low detected

TBD

TBD

ms

Total switch circuit resistance

10

Ohms

2 quadrant retract voltage

11

13

15

µA

L6260

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