L6245 datasheet(7/15 Pages) STMICROELECTRONICS

7 / 15 page

ELECTRICAL CHARACTERISTICS (Continued)

VCM DAC (Notes 5, 6)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Units

Res

Resolution

bit

N.L.

Differential Nonlinearity

±0.5

LSB

I.N.L.

Integral Nonlinearity

±0.5

LSB

Conversion Time

From 50% point of WR falling to

1% settling

µs

Output Z

100

Ω

FSTC

Full Scale Temp. Coeff.

200

ppm/

°C

VOH

High Output Voltage

Relative to Vref Input Code = 7Fh

1.46

1.52

VOL

Low Output Voltage

Relative to Vref Input Code = 80h

–1.53

–1.47

VZSO

Zero Scale Offset

Relative to Vref Input Code = 00

±10

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.

Measure wrt to Vref

–50

+50

IBC

Input Bias Current

(Note 3)

µA

Closed Loop Voltage Gain

Av = 0.25V/V nominal

0.242

0.258

V/V

PSRR

Power Supply Rejection Ratio

at DC

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.

0VPOWER

VDR

Input Differential Range

VPOWER

VOR

Output Range

0.3

3.5

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:

(a) VCM_CMD < Vref and

b) VCM_CMD > Vref. Measure wrt

Vref

–50

+50

Closed Loop Voltage Gain

Av = 2.5V/V nominal

2.425

2.575

V/V

PSRR

Power Supply Rejection Ratio

at DC

Bandwidth

200

KHz

CMR

Input Common Mode Range

–0.1

Output Range

0.5

3.5

Output Current

+400

L6245

7/15

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