ELECTRICAL CHARACTERISTICS (Continued)

VCM DAC (Notes 5, 6)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Units

Res

Resolution

8

bit

N.L.

Differential Nonlinearity

±0.5

LSB

I.N.L.

Integral Nonlinearity

±0.5

LSB

CT

Conversion Time

From 50% point of WR falling to

1% settling

2

µs

Output Z

100

Ω

FSTC

Full Scale Temp. Coeff.

200

ppm/

°C

High Output Voltage

1.46

1.52

V

Low Output Voltage

Relative to Vref Input Code = 80h

–1.53

–1.47

V

Zero Scale Offset

±10

mV

Over velocity detector, coil voltage sense amplifier

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Units

Output Offset Voltage

VCM+ = VCM–, within input

common mode range.

–50

+50

mV

Input Bias Current

(Note 3)

10

µA

G

Closed Loop Voltage Gain

Av = 0.25V/V nominal

0.242

0.258

V/V

PSRR

Power Supply Rejection Ratio

at DC

50

dB

BW

Bandwidth

200

KHz

CMR

Input Common Mode Range

Above and below these values

the op amp will be in saturation

and will not invert sign.

V

Input Differential Range

0

V

Output Range

0.3

3.5

V

Output Current

æ400

µA

Over velocity detector, coil current sense amplifier

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Units

Output Offset Voltage

VCM_RS1 shorted to GND for:

–50

+50

mV

G

Closed Loop Voltage Gain

Av = 2.5V/V nominal

2.425

2.575

V/V

PSRR

Power Supply Rejection Ratio

at DC

50

dB

Bw

Bandwidth

200

KHz

CMR

Input Common Mode Range

–0.1

2

V

Output Range

0.5

3.5

V

Output Current

+400

mA

L6245

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